Lincoln Impringer Conveyor Oven 1000 User Manual

SERVICE MANUAL

(DOMESTIC)

IMPINGER CONVEYOR OVENS

MODEL SERIES 1000 - 1200 & 1400

Lincoln Foodservice Products, LLC

1111 North Hadley Road

Fort Wayne, Indiana 46804

United States of America

Phone: (800) 374-3004

U.S. Fax: (888) 790-8193 • Int’l Fax: (260) 436-0735

Technical Service Hot Line

(800) 678-9511

www.lincolnfp.com

1000SeriesSvc

REV: 1/5/07

SEQUENCE OF OPERATIONS 1000/1001/1004/1005/1200/1201/1204/1205

MODEL 1000 - 120/230 VAC - 60HZ - NATURAL GAS

MODEL 1001 - 120/230 VAC - 60HZ - L.P. GAS

MODEL 1004 - 120/230 VAC - 60HZ - NATURAL GAS

MODEL 1005 - 120/230 VAC - 60HZ - L.P. GAS

MODEL 1200 - 120/230 VAC - 60HZ - NATURAL GAS/DUAL BELT

MODEL 1201 - 120/230 VAC - 60HZ - L.P. GAS/DUAL BELT

MODEL 1204 - 120/230 VAC - 60HZ - NATURAL GAS/DUAL BELT

MODEL 1205 - 120/230 VAC - 60HZ L.P.GAS/DUAL BELT

POWER SUPPLY

Electrical Power to be supplied to the Oven by a four conductor service. . Voltage

from the black conductor to the white conductor is 120 VAC.

Black conductor is Hot

Red conductor is Hot

White conductor is Dedicated Neutral

Green conductor is Ground

CONTROL BOX AUTO

COOL DOWN

When the temperature in the Control Box reaches 120°F + 3°, the Cooling Fan

Thermostat will switch power to the Control Box Cooling Fan. The Thermostat will

interrupt power to the Cooling Fan when the Control Box temperature falls to 100°F +

3°.

MAIN FAN CIRCUIT

Electrical power is permanently supplied to the normally open contacts of the Double

Pole Main Fan Relay, the Cooling Fan Thermostat, the normally open Main Fan

Switch, and the normally open Cool Down Thermostat (thermostat closes at 160°F

and opens at 140°F). Closing the Main Fan Switch energizes the coil of the Relay.

The normally open contacts now close, energizing the Main Fan Motor through (2)

10A fuses, and the Cooling Fan. Closing the Fan Switch also supplies power to the

Hour Meter (hour meter discontinued after S/N 3484), the 12.6 VAC Transformer, the

Burner and Conveyor Switches.

TRANSFORMER (12.6

VAC)

Upon closure of the Fan Switch, 120 VAC is supplied to the primary of the 12.6 VAC

Transformer. The Transformer steps the voltage down to 12.6 VAC (normally 13 to

14 VAC) with a center tap, and supplies power to the Time/Temp Display. The

voltage from each leg of the Transformer's secondary to the center tap should be

one half of the secondary voltage.

BURNER CIRCUIT

Closing the Fan Switch and the normally open Burner Switch supplies 120 VAC

through the Air Pressure Switch, to the normally open contacts of the Burner Motor

Relay, and the primary of the 24 VAC Step Down Transformer. The Transformer

secondary supplies 24 VAC (through a 1A fuse on Model 1004 and 1005) to the

Relay Coil (the normally open contacts close within 30 seconds), and the normally

open Centrifugal Switch. When the Relay contacts close, the Burner Blower Motor is

energized. As this motor reaches approximately1600 R.P.M., its internal centrifugal

switch closes, supplying 24 VAC to the Gas Control Valve. When the Gas Control

Valve is supplied with 24 VAC the pilot valve is energized, and the ignitor circuit is

energized. Ignition should now occur. After pilot flame is proven, the main gas valve

is energized. The Burner Indicator Light is also energized.

CONVEYOR DRIVE(S/N Closing the Fan Switch and the normally open Conveyor Switch supplies 120 VAC

100 to 4389)

through a 3A Fuse, to the Motor Control Board. AC volts are converted to D.C. volts

and are supplied to the Conveyor motor at board terminals A1 and A2 through a

D.P.D.T. Reversing Switch. Adjustment of the Speed Control Potentiometer (500

ohm, 10 turn) will change resistance at terminals S1, S2, and S3 varying the D.C.

voltage to the motor. The speed of the Conveyor Motor will increase or decrease as

the D.C. voltage from the Motor Control Board increases or decreases respectively.

Closing the fan switch and the normally open conveyor switch supplies 120 VAC to

the Motor Control Board. AC volts are converted to DC volts and are supplied to the

Conveyor Motor at terminals A+ and A-. Adjustment of the Speed Control

Potentiometer (5,000 ohm 10 turn ) will change resistance at terminals P1, P2, and

P3 varying the DC voltage to the motor. The speed of the conveyor motor will

increase or decrease as the DC voltage from the board increases or decreases

respectively. As the motor turns, it drives both the reducer gearbox and the tach.

(S/N 4390 and UP)

Impinger I -–1000 Series Service Manual - Domestic

generator. The tach. generator is a DC voltage generator which supplies a voltage to

the DC motor control board and is used as a reference for maintaining a constant

conveyor speed.

The 1200 Series Ovens utilize 2 complete conveyor drive systems.

The Time/Temp. Display is energized when the Fan Switch is closed, supplying120

VAC to the primary of the 12.6 volt Transformer The secondary output of the

transformer, normally 13 to 14 VAC (depending on input), with a center tap is

supplied at terminals 1,2, and 3 of the Time/Temp. Display. The center tap is

terminal 2. The display works on a balanced input and center tap voltage to each leg

must be 1/2 the total reading.

NOTE

TIME TEMP DISPLAY

The speed side of the Time/Temp. Display uses a slotted disc (cemented to tach.

coupling) to break the infra-red light beam of the optical switch (mounted on gear

motor) producing electrical pulses that are transmitted to the display. The display

converts these pulses into a read-out of minutes and seconds. The temperature

portion of the display uses a Thermistor Probe to sense oven temperature. The

thermistor outputs a resistance proportional to the oven temperature. This resistance

is then converted by the display into a temperature reading.

NOTE: The 1200 Series Ovens use a Double Pole Double Throw Switch to connect

the two Optical Encoder Assemblies to the Time/Temp Display. By activating the

switch, either the front or rear belt speed can be shown by the Time/Temp Display.

SEQUENCE OF OPERATIONS 1022 / 1023 / 1202 / 1203

MODEL 1022 - 120/208 VAC - 3 PHASE

MODEL 1023 - 120/240 VAC - 3 PHASE

MODEL 1202 - 120/208 VAC - 3 PHASE - DUAL BELT

MODEL 1203 - 120/240 VAC - 3 PHASE - DUAL BELT

POWER SUPPLY

Electrical Power to be supplied to the Oven by a five conductor service. Voltage from

the black conductor to the white conductor is 120 VAC.

Black conductor is Hot

Red conductor is Hot

Orange conductor is Hot

White conductor is Dedicated Neutral

Green conductor is Ground

MAIN FAN CIRCUIT

Electrical power is permanently supplied through 6, 50A fuses to the normally open

contacts of the Mercury Contactors. Power is also supplied through 2, 15A fuses to

the normally open contacts of the Double Pole Main Fan Relay, the Double Pole

Main Fan Switch, and the normally open Cool-Down Thermostat (thermostat closes

at 160°F and opens at 140°F.) Closing the Main Fan Switch energizes the coil of the

Main Fan Relay. The normally open contacts now close, energizing the Main Fan

Motor, and the Control Box Cooling Fan. Closing the Fan Switch also supplies power

to the Hour Meter (hour meter discontinued after S/N 3484), the 12.6 VAC

Transformer, the Heat and Conveyor Switches.

TRANSFORMER (12.6

VAC)

Upon closure of the Fan Switch, 120 VAC is supplied to the primary of the 12.6 VAC

Transformer. The Transformer steps the voltage down to 12.6 VAC (normally 13 to

14 VAC) with a center tap, and supplies power to the Time/Temp Display. The

voltage from each leg of the Transformer's secondary to the center tap should be

one half of the secondary voltage.

HEAT CIRCUIT

Closing the Fan Switch and the normally open Heat Switch supplies 120 VAC

through the Air Pressure Switch and the normally closed Hi-Limit Thermostat

(manually re-settable, opens at 190°F) the 3A Fuse, to the L1 terminal of the

Temperature Control Board, the coils of the Mercury Contactors, and to the Heat

Indicator Light.

TEMPERATURE

CONTROL

When the Heat Switch is closed, 120 VAC is supplied to the Temperature Control.

The Temperature Control Potentiometer (2.5K ohm) is adjusted to desired

temperature. The Thermocouple will provide varying millivolts to the Temperature

Controller. The Temperature Controller switches the L2 line of the Contactor coils at

intermittent intervals to maintain desired temperature.

Impinger I -–1000 Series Service Manual - Domestic

CONVEYOR DRIVE

(S/N 100 to 4389)

Closing the Fan Switch and the normally open Conveyor Switch supplies 120 VAC

through a 3A Fuse, to the Motor Control Board. AC volts are converted to D.C. volts

and are supplied to the Conveyor Motor at board terminals A1 and A2 through a

D.P.D.T. Reversing Switch. Adjustment of the Speed Control Potentiometer (500

ohm, 10 turn) will change resistance at terminals S1, S2, and S3 varying the D.C.

voltage to the motor. The speed of the Conveyor Motor will increase or decrease as

the D.C. voltage from the Motor Control Board increases or decreases respectively.

Closing the fan switch and the normally open conveyor switch supplies 120 VAC to

the Motor Control Board. AC volts are converted to DC volts and are supplied to the

Conveyor Motor at terminals A+ and A-. Adjustment of the Speed Control

Potentiometer (5,000 ohm 10 turn) will change resistance at terminals P1, P2, and

P3 varying the DC voltage to the Conveyor Motor. The speed of the conveyor motor

will increase or decrease as the DC voltage from the board increases or decreases

respectively. As the motor turns, it drives both the reducer gearbox and the tach.

generator. The tach. generator is a DC voltage generator which supplies a voltage to

the DC motor control board and is used as a reference for maintaining a constant

conveyor speed.

(S/N 4390 and UP)

NOTE*

TIME/TEMP DISPLAY

The 1200 Series Ovens utilize 2 complete conveyor drive systems.

The Time/Temp Display is energized when the Fan Switch is closed, supplying 120

VAC to the primary of the12.6 volt Transformer. The secondary output of the

transformer, normally 13 to 14 VAC (depending on input), with a center tap is

supplied to terminals 1,2, and 3 of the Time/Temp Display. The center tap is terminal

2. The display works on a balanced input and center tap voltage to each leg must be

1/2 the total reading.

The speed side of the Time/Temp. Display uses a slotted disc (cemented to tach.

coupling) to break the infra-red light beam of the optical switch (mounted on gear

motor) producing electrical pulses that are transmitted to the display. The display

converts these pulses into a read-out of minutes and seconds.

The temperature portion of the display uses a Thermistor Probe to sense oven

temperature. The thermistor outputs a resistance proportional to the oven

temperature. This resistance is then converted by the display into a temperature

reading.

The 1200 Series Ovens use a Double Pole Double Throw Switch to connect the two

Optical Encoder Assemblies to the Time/Temp. Display. By activating the switch,

either the front or rear belt speed can be shown by the Time/Temp. Display.

NOTE*

SEQUENCE OF OPERATIONS 1040 / 1041 / 1240 / 1241

MODEL 1040 - 120/230 VAC - 60HZ - NATURAL GAS

MODEL 1041 - 120/230 VAC - 60HZ - L.P. GAS

MODEL 1240 - 120/230 VAC - 60HZ - NATURAL GAS/DUAL BELT

MODEL 1241 - 120/230 VAC - 60HZ - L.P. GAS/DUAL BELT

POWER SUPPLY

Electrical Power to be supplied to the Oven by a four conductor service. Voltage

from the black conductor to the white conductor is 120 VAC.

Black conductor is Hot

Red conductor is Hot

White conductor is Dedicated Neutral

Green conductor is Ground

CONTROL BOX AUTO

COOL DOWN

When the temperature in the Control Box reaches 120°F 3°, the Cooling Fan

Thermostat will switch power to the Control Box Cooling Fan. The Thermostat will

interrupt power to the Cooling Fan when the Control Box temperature falls to 100°F +

3°.

MAIN FAN CIRCUIT

Electrical power is permanently supplied to the normally open contacts of the Double

Pole Main Fan Relay, the Cooling Fan Thermostat, the normally open Main Fan

Switch, and the normally open Cool Down Thermostat (thermostat closes at 160°F

and opens at 140°F). Closing the Main Fan Switch energizes the coil of the Relay.

The normally open contacts now close, energizing the Main Fan Motor through two

10A fuses, and the Cooling Fan. Closing the Fan Switch also supplies power to the

12.6 VAC Transformer, the Burner and Conveyor Switches.

Impinger I -–1000 Series Service Manual - Domestic

TRANSFORMER (12.6

VAC)

Upon closure of the Fan Switch, 120 VAC is supplied to the primary of the 12.6 VAC

Transformer. The Transformer steps the voltage down to 12.6 VAC (normally 13 to

14 VAC) with a center tap, and supplies power to the Time/ Temp. Display. The

voltage from each leg of the Transformer's secondary to the center tap should be

one half of the secondary voltage.

BURNER CIRCUIT

Closing the Fan Switch and the normally open Burner Switch supplies 120 VAC

through the Air Pressure Switch, to the Temperature Control Board, the normally

open contacts of the Burner Motor Relay (Burner Motor Relay discontinued after S/N

14791) and the primary of the 24 VAC Transformer. The transformer's secondary

supplies 24 VAC to the burner motor relay coil (the normally open contacts close

within 30 seconds), and the normally open Centrifugal Switch. When the relay

contacts close, the Burner Blower Motor is energized. As this motor reaches approx.

1,600 R.P.M its internal centrifugal switch closes, supplying 24 VAC to the Gas

Control Valve. When the Gas Control Valve is supplied with 24 VAC, the pilot valve

is energized, and the igniter circuit is energized. Ignition should now occur. After pilot

flame is proven, the Main Gas Valve is energized. The Burner Indicator Light is also

energized.

TEMPERATURE

CONTROL

Closing the Fan Switch and Burner Switch supplies 120 VAC to the Temperature

Control Board. The 1K or 1000 ohm Temperature Potentiometer is adjusted to

desired temperature. The Thermocouple will provide varying millivolts to the

Temperature Controller. The Temperature Controller supplies 120 VAC to the

Solenoid Valve at intermittent intervals to maintain desired temperature.

Closing the fan switch and the normally open conveyor Switch supplies 120 VAC to

the Motor Control Board. AC volts are converted to DC volts and are supplied to the

Conveyor Motor, at terminals A+ and A-. Adjustment of the Speed Control

Potentiometer (5,000 ohm 10 turn) will change resistance at terminals P1, P2, and

P3 varying the DC voltage to the Conveyor Motor. The speed of the conveyor motor

will increase or decrease as the DC voltage from the board increases or decreases

respectively. As the motor turns, it drives both the reducer gearbox and the tach.

generator. The tach. Generator is a DC voltage generator, which supplies a voltage

to the DC motor control board and is used as a reference for maintaining a constant

CONVEYOR DRIVE

(S/N Q14790 & Below,

1200 series

S/N Q14973 & Below

1000 series)

(S/N Q14791 & Above,

1200 series refer to Pg.

5 & 6 S/N Q14974 &

Above, 1000 series refer conveyor speed.

to Pg. 5 & 6 (STEPPER)

NOTE:

TIME/TEMP

The 1200 Series Ovens utilize 2 complete conveyor drive systems.

The Time/Temp. Display is energized when the Fan Switch is closed, supplying 120

DISPLAY(S/N Q14790 & VAC to the primary of the12.6 volt Transformer. The secondary output of the

Below, 1200 series

S/N Q14973 & Below

1000 series)

transformer, normally 13 to 14 VAC (depending on input), with a center tap, is

supplied to terminals 1,2, and 3 of the Time/Temp. Display. The center tap is

terminal 2. The display works on a balanced input and center tap voltage to each leg

must be 1/2 the total reading.

(S/N Q14791 & Above,

1200 series refer to Pg.

5 & 6 S/N Q14974 &

The speed side of the Time/Temp. Display uses a slotted disc (cemented to tach.

coupling) to break the infrared light beam of the optical switch (mounted on gear

motor) producing electrical pulses that are transmitted to the display. The display

Above, 1000 series refer converts these pulses into a read-out of minutes and seconds. The temperature

to Pg. 5 & 6 (STEPPER) portion of the display uses a Thermistor Probe to sense oven temperature. The

thermistor outputs a resistance proportional to the oven temperature. This resistance

is then converted by the display into a temperature reading.

NOTE*

The 1200 Series Ovens use a Double Pole Double Throw Switch to connect the two

Optical Encoder Assemblies to the Time/Temp. Display. By activating the switch,

either the front or rear belt speed can be shown by the Time/Temp Display .

Closing the Oven Fan Switch supplies 120 VAC, through the Power Transformer, to

the normally open Conveyor Switch. Closing the Conveyor Switch supplies 120 VAC,

through a 3 AMP Fuse, to the primary of the Conveyor Control Transformer. The

secondary of this Transformer supplies 10 VAC and 29 VAC to the Conveyor

Control. The conveyor control supplies voltage pulses to the Conveyor Control. The

Conveyor Control Potentiometer varies the frequency of these pulses. The motor

speed will increase or decrease, as the frequency of the pulses increase or decrease

respectively.

CONVEYOR DRIVE

Impinger I -–1000 Series Service Manual - Domestic

TIME TEMP DISPLAY

Closing the Oven Fan Switch supplies 120 VAC, through the Power Transformer, to

the primary of the Time/Temp. Transformer. The secondary output of the

Transformers, 12.5to 15 VAC with a center tap, is supplies to terminals 1, 2, and3 of

the Time/Temp. Display. The display works on a balanced input, and the center tap

voltage to each leg must be 1/2 the total reading.

Impinger I -–1000 Series Service Manual - Domestic

SCHEMATIC / 1000, 1001

Impinger I -–1000 Series Service Manual - Domestic

SCHEMATIC / 1004, 1005

Impinger I -–1000 Series Service Manual - Domestic

SCHEMATIC / 1022, 1023 – S/N Q19077 & BELOW

Impinger I -–1000 Series Service Manual - Domestic

SCHEMATIC / 1022, 1023 – S/N Q19078 & ABOVE

Impinger I -–1000 Series Service Manual - Domestic

SCHEMATIC / 1040, 1041 – S/N Q14279 & BELOW

Impinger I -–1000 Series Service Manual - Domestic

SCHEMATIC / 1040, 1041 – S/N Q14280 & ABOVE

Impinger I -–1000 Series Service Manual - Domestic

SCHEMATIC / 1200, 1201

Impinger I -–1000 Series Service Manual - Domestic

SCHEMATIC / 1202, 1203 S/N Q14790 & BELOW

Impinger I -–1000 Series Service Manual - Domestic

SCHEMATIC / 1202, 1203 S/N Q14791 & ABOVE

Impinger I -–1000 Series Service Manual - Domestic

SCHEMATIC / 1204, 1205

Impinger I -–1000 Series Service Manual - Domestic

SCHEMATIC / 1240, 1241 – S/N Q14279 & BELOW

Impinger I -–1000 Series Service Manual - Domestic

SCHEMATIC / 1240, 1241 – S/N Q14280 & ABOVE

Impinger I -–1000 Series Service Manual - Domestic

TROUBLESHOOTING GUIDE 1000 & 1200

GAS OVENS

SYMPTOM

Oven fan will not run

POSSIBLE CAUSE

Incoming Power Supply

EVALUATION

Check breakers/ Reset if required / Call Power Co.

if needed.

For some export ovens, there is a control circuit

step-down transformer. This transformer steps

down supply voltage to 120 VAC. If main fan will

not run, the secondary of this transformer must be

checked for 120 VAC output. Check specific oven

model schematic for circuit location.

Check and/or Replace

NOTE:

(Export Ovens)

Oven Fan Fuse(s)

Fuse Holder

Fan Switch

Check and/or Replace

Check continuity between switch terminals.

Check continuity to 120 VAC coil. Check for power

to relay coil (120 VAC). Check for 208/240 VAC to

relay terminals. Visually check for contact pull-in.

Check for opens, shorts, or grounds. WITH

POWER OFF: Turn Fan Blade to check for locked

rotor.

Main Relay

Fan Motor

Capacitor

Cool Down Thermostat

Check for opens, shorts, or grounds.

Check cool down thermostat (thermostat closes at

160°F and opens at 140°F). Check for power (120

VAC) at cool down thermostat. With the cool down

thermostat pre-heated, check for continuity. If

switch is open, replace.

No Main Fan Cool

Down

No Control Box

Main Fan Relay

Check for power to Main Fan Relay. Visually check

Cooling(For ovens

equipped with Control

Box Cooling Fan)

for contact pull in.

(Export Ovens)

Axial Cooling Fan

(For ovens equipped with a control circuit step-

down transformer, the supply voltage for the

cooling fan is 240 VAC.)

WITH POWER OFF: check for locked rotor. Check

for power (120 VAC) to cooling fan. If 120 VAC is

present at the fan motor and the fan does not run,

replace fan assembly.

NOTE:

No automatic control

box cooling (For ovens

equipped with control

box cooling fan)

Incoming Power Supply

Cooling Fan Thermostat

Check breakers/Reset if needed. Check for

incoming power (120 VAC)at cooling fan

thermostat.

Check cooling fan thermostat (thermostat closes at

120°F and opens at 100°F). With cooling fan

thermostat pre-heated, check for continuity. If

switch is open, replace.

Axial Cooling Fan

Check for 120 VAC to cooling fan, if present and

fan does not run, replace fan.

Control box cooling fan Cooling Fan Thermostat

continues to run

See "Cooling Fan Thermostat"

Oven will not heat

Gas Supply

Manual Gas Shut-off Valve

Fan Switch

Check for adequate gas supply to oven.

Check to see that manual shut-off valve is open.

Check to see that fan switch is "on".

Main Oven Fan

Check if main oven fan is operating. If not, refer to

"Oven fan will not run". Page 20.

Burner Switch

Check for 120 VAC to neutral on both sides of

switch. If switch is closed and 120 VAC is present

on one side only, replace the switch.

Impinger I -–1000 Series Service Manual - Domestic

Air Pressure Switch

Transformer, 24 VAC

(Model 1004 & 1005)

Check for 120 VAC on both sides of switch. If

voltage present on one side only, check for air tube

blockage. Adjust air switch. If above fails, replace

air pressure switch.

Check for 120 VAC to primary of transformer.

Check for 24 VAC from secondary of transformer. If

there is primary voltage, but no secondary voltage,

replace transformer.

For oven models 1004 and 1005, there is a 1 Amp

fuse located between the 24 VAC output from the

transformer and the coil of the burner motor relay. If

there is 24 VAC output from the transformer, but no

burner motor relay action, check fuse and fuse

holder. Replace as necessary.

NOTE:

Burner Motor Relay

Burner Blower Motor

Delete burner motor relay refer to Section D, Page

34.

Check for 120 VAC supply to burner blower motor.

If 120 VAC is present and motor does not run,

replace motor. WITH POWER OFF: turn blower

wheel to check for locked rotor.

Centrifugal Switch of Burner

Blower Motor

Check for 24 VAC output from secondary of

transformer. If voltage is present, check for 24 VAC

at pin 6 and the ground bar on ignition control and

valve assembly. If the burner blower motor is

running and there is no voltage at pin 6 and the

ground bar on the ignition control valve, replace the

burner blower motor.

For ovens with

Johnson Controls

Ignition Control

Ignition Control and Valve

Assembly

Check for 24 VAC supply to the ignition control and

valve assembly at pin 6 and the ground bar. If

voltage is present, check for 24 VAC across pin #1

and the ground bar (pilot valve). If voltage is not

present, replace electronic control package. If the

pilot valve is energized, check to see that the high

voltage ignitor circuit is also energized. To check,

disconnect the ignitor lead from the bottom of

ignition control. Place female terminal of ignitor

lead approximately 1/8" from terminal post on

ignition control. Spark should jump the 1/8" gap. If

no spark is present, replace ignition control.

If the ignition control is supplied with 24 VAC, and

the pilot valve (internal to valve assembly) and

ignitor circuits are energized, visually check for pilot

flame. This may be done by opening the small

inspection door on the end of the burner, or by

opening the main oven door and looking under the

lower finger housings on the right side of the oven.

If no pilot flame is visible, check the following.

Check to see that pilot shut-off valve is open (shut-

off valve is located between ignition control and

valve assembly and burner.)

Check for gas pressure at pilot tube. Disconnect

pilot tube at burner and connect manometer to pilot

tube. If no gas pressure is present, check for

blockage in pilot tube or pilot shut-off valve. If these

are clear, and there is gas supplied to the oven,

replace the ignition control and valve assembly.

If there is gas pressure at the pilot tube, check the

pilot orifice for obstructions. Replace as need

Check the burner ignitor head for any obstructions,

also check for frayed or broken wire, any type of

damage to spark gap (.100 in. 2.5 m.m.) If there is

visible damage, replace ignitor assembly.

(For ovens with

Honeywell Ignition

control, See Pg. 21)

No Pilot

Pilot Shut-off Valve

Pilot Tube

Pilot Orifice

Burner Ignitor

Impinger I -–1000 Series Service Manual - Domestic

Pilot flame but no main Flame Sensor

flame

(There should be a visible pilot flame at this time.)

To check for proper flame sensor operation,

connect a digital multimeter (capable of measuring

D. C. microamperes) in series between the flame

sensor wire (normally connected to terminal #4)

and terminal #4. NOTE: This is a current

measurement and the meter must be connected in

series. This procedure is for checking the pilot

flame only. Remove main valve wire (Red) from

terminal #3 on ignition control. With a visible pilot

flame, the current readings should be as follows:

Johnson G-65 control, 0.2 micro amp. D.C.

minimum/Johnson G-60 control, 0.7 micro amp.

D.C. minimum. If these values are not achieved,

replace flame sensor. Also check for any type of

damage to flame sensor wire and connections.

If there is a pilot flame, and there is sufficient micro

amp. current at terminal #4, check for 24 VAC

that the main valve (internal to valve assembly) has

opened. Connect a manometer to the manifold gas

pressure tap located on the back side of the ignition

control and valve assembly. If no gas is present,

replace ignition control and valve assembly.

Check for 24 VAC output from secondary of

transformer. If voltage is present, check for 24 VAC

at terminals marked "24V" and "24V gnd" on

Ignition Control. If the Burner Blower Motor is

running and there is no voltage at terminals 24V

and 24V gnd on the ignition control, replace the

Burner Blower Motor.

These Ignition Controls have a 30 second pre-

purge(Delay) and a 15 second lock-out time – The

Ignition Control will try for ignition for 15 seconds

and then shut-off. To Re-try for ignition, turn off

burner switch, wait 30 seconds and re-try ignition.

Check for 24 VAC supply to ignition control at

terminals "24V" and "24V gnd". If voltage is

present, check for 24V at terminal "P.V. (Pilot

Valve) and "gnd". If voltage is not present, replace

Ignition Control. If the pilot valve is energized,

check to see that the high voltage ignitor circuit is

also energized. To check, disconnect the ignitor

lead from the ignition control. Place the terminal of

ignitor lead approximately 1/8" from terminal post

on Ignition Control. Spark should jump the 1/8"

gap. If no spark is present, replace ignition control.

If the ignition control is supplied with 24 VAC and

the pilot valve (in gas valve) and ignitor circuits

If no pilot flame is visible, check to see that the pilot

shut-off valve is open(shut-off valve is located

between gas valve and burner).

Ignition Control and Valve

Assembly

For ovens with

Honeywell ignition

control

Centrifugal Switch of Burner

Blower Motor

NOTE:

Ignition Control

No Pilot

Pilot Shut-off Valve

Pilot Tube

Check for gas pressure at pilot tube. Disconnect

pilot tube at burner and connect manometer to pilot

tube. If no gas pressure is present, check for

blockage in pilot tube or pilot shut-off valve.

If there is gas pressure at the pilot tube, check the

pilot orifice for obstructions. Replace as needed.

Check the burner ignitor head for any obstructions,

also check for frayed or broken wire, any type of

damage to spark gap (.100 in. 2.5 mm) If there is

visible damage, replace ignitor assembly.

Pilot Orifice

Burner Ignitor

Impinger I -–1000 Series Service Manual - Domestic

Spark Ignitor (Flame Sensor)

(There should be a visible pilot flame at this time).

NOTE: The Honeywell Ignition Control uses the

spark ignitor as the flame sensor. If spark

Pilot flame but no main

flame

continues, check for proper ground connections at

Ignition Control. Check pilot orifice for any partial

blockage. If the above checks OK, replace ignition

control. If spark stops when pilot is lit, check for 24

VAC across M.V. - M.V/ P.V. terminals, if voltage is

not present, replace ignition control. If voltage is

present at terminals M.V. - M.V./P.V., the indicator

light on the control panel should be on, verify that

the main valve has opened, connect manometer to

manifold gas pressure tap(located on the

Check for gas supply at temperaturecontrol. Check

for temperature control set above 300°F.

Check for blockage of main orifice. If there is no

blockage to the main orifice, replace the

temperature control.

Red Indicator Light is

on, but no main

flame(For ovens with

mechanical

Temperature Control Valve

(Robert Shaw)

Main Orifice

thermostat)

(For ovens with

Temperature Control

Potentiometer

Check for 120 VAC across L1 and L2on

Electronic

temperature control board. Potentiometer (1000

ohm,1 turn) WITH POWER OFF: check ohms

across red and black leads, the ohm reading

should be 0 to1000 ohms as the dial is turned.

From green to red, the reading should be 1000

ohms steady throughout the full turn of the dial.

Temperature Control)

NOTE: Ovens S/N Q18037 and above, the potentiometer is internal to temperature control. Proceed to next

component.

Thermocouple Probe

Remove thermocouple leads from the temperature

control board, and measure the millivolt output of

these leads. Refer to chart on page 38 in the

adjustment section for proper readings.

Temperature Control

Solenoid Valve

Turn temperature control dial to full "on" position.

Measure for 120 VAC across terminals "N.O." and

"L2", if voltage is not present; replace control.

If voltage is present at terminals "N.O."and "L2",

check for voltage at solenoid valve. If voltage is

present, listen for valve to open and close. Also,

check for opens and shorts in coil. If solenoid valve

is defective, replace

Intermittent Heating

Both the main fan motor and burner blower motor

are equipped with thermo-protection and will cease

to operate when not cooled properly. This can

cause the units to cycle on and off intermittently.

Also, most of the problems listed under "oven will

not heat" can cause intermittent failures.

For continuing intermittent problems, a series of test lights may be made and installed in

the ovens. The lights will allow the customer to advise the service technician a trouble code when

the oven fails.

The lights should be connected in the following manner:

Light#l attached in 120VAC line after Air Pressure Switch.

Light#2 attached after 120VAC contacts of Burner Motor Relay (or, refer to Bulletin #028

for Relay Removal).

Light#3 in 24VAC Burner Transformer Secondary.

Light#4 in 24VAC at terminal #6 of Johnson control valve or "24V" on Honeywell Control.

Light#5 in 24VAC at terminal #1 of Johnson control valve or "PV" on Honeywell Control.

Light#6 in 24VAC at terminal #3 of Johnson control valve or "MV" on Honeywell Control.

CODE:

All lights off - lights of main power, main fan off, air pressure switch out.

1 on 2 off 3 on 4 off 5 off 6 off

- Burner Motor Relay bad.

Impinger I -–1000 Series Service Manual - Domestic

1 on 2 on 3 on 4 off 5 off 6 off

1 on 2 on 3 on 4 on 5 off 6 off

- Burner Motor Centrifugal Switch bad.

- Ignition Control bad.

1 on 2 on 3 on 4 on 5 on 6 off - Pilot Shield missing or warped, Flame Sensor bad, Pilot

- Orifice plugged, or Gas Valve bad.

1 on 2 on 3 on 4 on 5 on 6 on

- Unit still not working Main Orifice plugged, Gas Valve bad,

- Temperature Control bad.

- However, Main Orifice would not be intermittent problem.

Impinger I -–1000 Series Service Manual - Domestic

TROUBLESHOOTING GUIDE

ELECTRIC OVENS MODEL SERIES 1000 & 1200

SYMPTOM

Oven fan will not run

POSSIBLE CAUSE

Incoming Power Supply

EVALUATION

Check breakers/Reset if required/ Call Power Co. if

needed.

For some export ovens, there is a control circuit

step-down transformer. This transformer steps

down supply voltage to 120 VAC. If main fan will

not run, the secondary of this transformer must be

checked for 120 VAC output. Check specific oven

model schematic for circuit location.

NOTE:

(Export Ovens)

Oven Fan Fuse(s)

Fuse Holder

Fan Switch

Check and/or Replace

Check continuity between switch terminals.

Check continuity to 120 VAC coil. Check for power

to the relay coil (120 VAC). Check for 208/220/240

VAC to relay terminals. Visually check for contact

pull-in

Main Relay

Fan Motor

Check for opens, shorts, or grounds.WITH

POWER OFF: Turn Fan Blade to check for locked

rotor.

Capacitor

Cool Down Thermostat

Check for opens, shorts, or grounds.

No Main Fan Cool

Down

Check cool down thermostat (thermostat closes at

160°F and opens at 140°F). Check for power (120

VAC) at cool down thermostat. With cool down

thermostat pre-heated, check for continuity. If

switch is open, replace.

No control box cooling Main Fan Relay

Axial Cooling Fan

Check for power to main fan relay. Visually check

for contact pull in.

WITH POWER OFF: turn the fan blade to check for

locked rotor. Check for power (120 VAC) to cooling

fan. If 120 VAC is present at the fan motor and the

fan does not run, replace fan assembly.

Check if main oven fan is operating. If not, refer to

"Oven fan will not run."

Oven will not heat

Main Oven Fan

Heat Switch

Check for continuity between switch terminals with

switch on. Replace if defective.

Air Pressure Switch

Check for 120 VAC on both sides of switch. If

voltage present on one side only, check for air tube

blockage, adjust air switch. If above fails, replace

air pressure switch.

Hi Limit Thermostat

Terminals are normally closed. If open, reset and

test oven for proper operation. If thermostat will not

hold for maximum oven temperature, and oven is

not exceeding temperature dial setting, replace

thermostat (rated at 190°F).

NOTE:

Hi Limit Thermostat

(Model 1032)

Terminals are normally closed. If open, reset and

test oven for proper operation. If thermostat will not

hold for maximum oven temperature, and oven is

not exceeding temperature dial setting. Replace

the thermostat. Check for proper location of

sensing bulb in its spring holder. If hi-limit is still

tripping, replace (rated for 368°C).

3 Amp Temperature Control

Fuse

Check and/or Replace

Fuseholder

Check and/or replace.

Impinger I -–1000 Series Service Manual - Domestic

Temperature Control Board

Check for 120 VAC input to temperature control

board. If not present, check wiring from fuse holder

to temperature control board. Turn the temperature

adjustment dial to the maximum temperature

position Check for 120 VAC at coil of mercury

contactor(s). Next, short the leads of thermocouple

on the temperature control board, check for 120

VAC at coil of mercury contactor(s). If voltage is

not present, replace temperature control board. If

voltage is present proceed.

Temperature Control

Potentiometer

Potentiometer is 0 to 2.5K ohm. WITH POWER

OFF: remove the leads from the temperature

control board terminals 1, 2, and 3 and measure

ohms from black to white leads. The ohm reading

should be 0 to approximately 2.5K ohms as the dial

Remove thermocouple leads from the temperature

control board, and measure the millivolt output of

the leads. Refer to chart in adjustment section for

proper millivolt readings.

Check for 120 VAC to the contactor coil. If voltage

is present and contactor will not activate, replace

the contactor(s). Also check each contactor for

proper high voltage input and output.

Thermocouple Probe

Mercury Contactor(s)

50 Amp Fuses

If there is no high voltage input to the mercury

contactor(s), check the 50 amp fuses and replace if

necessary.

Heater Elements

Check the Amp. draw on each hot leg for proper

load. Check the specifications plate for rating

information. If the Amp. draw is low or high, check

the individual elements for opens, shorts, and

proper resistance . To check resistance of the

elements, turn off the power! Remove all leads

from the elements and use an accurate digital

VOM. The element resistance should be as

follows: 208V - 9.8 ohms approx. 220V - 10.5 ohms

approx. 240V - 13 ohms approx. If all readings are

not correct, replace elements as needed.

The mercury contactor has probably malfunctioned

in the closed position. If there is no voltage to the

operating coil, but there is high voltage at the

contactor output, replace the mercury contactor.

Check incoming voltage supply at line 1 to neutral.

There should be a voltage reading of 120 VAC. If

not present, check breakers.

Oven heats with switch Mercury Contactor(s)

off

Conveyor will not run

(S/N 100-4389)

Voltage Supply

3 Amp Fuse

This conveyor fuse is located on the front panel.

Replace if defective.

Fuse Holder

Conveyor Switch

D. C. Motor Control Board

Check and/or Replace.

Same procedure as for fan switch.

Check for 120 VAC input to D. C. control board

across L1 and L2. Check the 3 amp fuse on the D.

C. control board. Check for D. C. voltage at

terminal F1 and F2. Voltage should be 10 VDC +

10 steady. If this voltage is not present, replace D.

C. control board. Check for D. C. voltage output to

the motor across terminals A1 and A2 (this voltage

should be approx. 125 VDC at maximum conveyor

motor speed).

Impinger I -–1000 Series Service Manual - Domestic

Speed Control Potentiometer

This is a 0 to 400 ohm or 0 to 500 ohm, 10-turn

potentiometer. WITH POWER OFF: remove the

red, white, and black leads from terminals S1, S2,

S3. With a digital multimeter, check the ohm

reading across the red to black leads. This ohm

reading should be a steady 400-ohm, or 500-ohm,

through the entire 10-turn rotation of the

potentiometer. Check for shorts or opens or

unsteady, ohm reading, if potentiometer is

defective, replace. If the potentiometer checks OK,

and there is no output at terminals A1 and A2,

replace the D. C. control board.

If there is D. C. voltage output from the motor

control board, but the conveyor drive motor is not

running, check the D.P.D.T. reversing switch.

Check the conveyor drive sprocket for tightness.

Disconnect the motor, check the red and black

motor leads for opens, shorts or grounds. Check

Reversing Switch

Conveyor Drive Motor

the brushes for excessive or

abnormal wear.

Replace as needed. Reconnect motor. Test for

operation. If motor does not run, replace.

Conveyor will not

run(S/N 4390 to

Q190771000 Series)

(S/N 4390-

Voltage Supply

Check incoming voltage supply at line 1 to neutral.

There should be a voltage reading of 120 VAC. If

no present, check breakers. 3 Amp Fuse. This

conveyor fuse is located on the front panel.

Replace if defective.

Q147901200 Series)

Fuseholder

Fan Switch

Check and/or Replace.

See procedure for checking on Page 20.

Conveyor Switch

(Dual Belt Ovens)

Same procedure as for fan switch.

NOTE:

Dual belt ovens utilize 2 complete independent

conveyor drive systems. The trouble shooting

procedures are the same as single belt ovens,

except that the dual belt ovens use one each of the

following: one "A" D. C. control board and one "B"

D. C. control board.

Speed Adjustment

Potentiometer

This is a 0 to 5 K ohm, 10 turn potentiometer With

power off, remove the red, black and white pot

leads from the motor control board at terminals P1,

P2 and P3. With a digital multimeter, check the

ohm reading across the red lead (P3) to the black

lead (P1). This reading should be 5 K ohms 5%

as the pot is rotated from low to high. Place the

meter leads on the red lead (P3) and on the white

lead (P2) Rotating the pot. slowly, from low to high,

the meter reading should show an even transition

from O to 5 K ohms 5%. There should be

Check for 120 VAC input to the control board at

terminals L1 and L2. If not present, check the

conveyor switch and wiring back to 3-amp fuse and

then back to power source if necessary. If 120 VAC

is present at L1 and L2, check the VDC output at

terminals A+ and A-. If a DC voltage is not present,

check the 4 amp and the 1 amp fuses on the

control board. Also reset and check the mini

breaker in the armature line to the gearmotor. If

120 VAC is present at terminals L1 and L2, but DC

voltage is not present at A+ and A-, providing the 1

amp and 4 amp fuses are good, replace the board.

If DC voltage is present at A+ and A-, but motor

does not run, check gear motor as follows.

DC Motor Control Board

Impinger I -–1000 Series Service Manual - Domestic

Conveyor Gear Motor

If DC voltage is present at A+ and A- and the motor

does not run, first check the mini breaker and then

the conveyor. Refer to the next possible cause.

Check the leads to the motor for evidence of any

shorts or opens, and each lead to ground. If the

motor fails the above tests, replace motor. Remove

dust cover from the top of the motor and rotate

motor shaft to determine if there is a locked rotor or

a locked gear box (use care so encoder disc is not

damaged).

Conveyor

Check for any mechanical misalignment or

improper adjustment. Also check for worn

bearings. The Installation and Operations Manual

shows proper conveyor belt adjustment. A

conveyor belt that is over tightened will cause

excessive bearing wear and sometimes, irregular

speed.

Conveyor speed

varying or intermittent

Power Supply

Check power supply at the DC control board for the

120 VAC at board terminals L1 and L2. If voltage is

not present, check main circuit breakers.

Tach generator and DC Motor With the power to the DC motor control board

Control Board

turned off, remove the leads from terminals T1 and

T2.Place the test leads of a digital meter on the

tach leads, turn power on, and the meter reading

should be approximately 30 to 35 VDC. This

reading should be steady within 0.2 to 0.3 VDC.

If this reading is not within + 0.5 VDC, place the

test meter probes on terminals A+ and A-. The

meter reading should be approximately 150 to 160

VDC and steady within approximately 2 VDC. If the

tach. voltage is unsteady, and the board output is

steady, check the coupling for loose set screws or

any type of damage. If the coupling checks good,

the tach. is usually bad. If the board voltage output

is unsteady beyond limits, then the board is

probably bad. Always check the speed pot. Be sure

it is okay before changing a board or tach. This test

is not always 100% accurate as this test is not

performed at operating speeds. However, this test

is the best method currently available.

Readjustment should always be attempted at least

once before replacement. See procedure for board

adjustment on page 44.

If the DC control board is steady then the problem

may be the motor or gearbox. Check the brushes

in the motor for excessive arching and/or unusual

wear. Check the motor and gearbox from

instruction located on page 27 under "possible

cause" listing "Conveyor gear motor".

DC Gearmotor

Voltage Supply

Conveyor will not

run(S/N Q19078 &

Up1000 Series) (S/N

Q14791 & Up1200

Series)

Check incoming voltage supply at Line 1 to neutral.

There should be a voltage reading of 120 VAC.

See procedure for checking on page 20.

Fan Switch

Conveyor Switch

Check for 120 VAC to conveyor switch. If no

voltage is present, trace wiring back to the fan

switch. WITH POWER OFF: Check continuity

between switch terminals.

Conveyor Fuse (3A)

Fuseholder

Check, replace if necessary.

Impinger I -–1000 Series Service Manual - Domestic

Conveyor Control(Stepper)

Transformer

Check for 120 VAC supply to primary of

transformer, if voltage is not present, trace wiring

back to the fuse-holder. If voltage is present, check

for output voltage from the transformer secondary.

NOTE: this control transformer outputs (2)

secondary voltages. Red Leads 29 VAC Brown

Leads 10 VAC If BOTH secondary voltages are not

present, replace the transformer.

Speed Adjustment

Potentiometer

This is a 0 to 50k ohm,10 turn potentiometer. WITH

POWER OFF: remove the 3 pin potentiometer

cable plug from the motor control board. With a

digital multimeter, check the ohm reading across

the red lead to the black lead, this reading should

be 50k ohms 5% as the potentiometer is rotated

through its 10 turn rotation. Place the meter leads

on the red lead and white lead. Rotating the

potentiometer slowly, from low to high, the meter

should show an even transition from 0 to 50K ohms

5% through the 10 turn rotation of the

potentiometer. There should be no dead or open

spots through the 10 turns of the potentiometer.

Check all three leads to ground. There should be

no continuity to ground. If any of the above checks

fail, replace the potentiometer.

NOTE: if the conveyor drive motor becomes

jammed or begins to run at an uncontrolled speed,

the conveyor motor will stop running. To reset, turn

off the conveyor switch, wait 10 seconds, turn the

conveyor switch on. If the motor does not run after

attempting re-set, check for 2-29 VAC across the

motor terminals 1 to 2 and 3 to 5 on the conveyor

motor control. If voltage is not present at both sets

of terminals, replace control

Conveyor Motor(Stepper)

Control

Conveyor Drive (Stepper)

Motor

Check the drive sprocket on motor out-put shaft to

insure that it is tight.. Check motor windings –

measurements should be approximately 2 ohms.

Terminal 1-5, 2-6, 3-7, 4-8 WITH POWER OFF:

Turn the motor shaft to check for jammed gear box.

If motor shaft will not turn, replace conveyor

drive(stepper) motor.

Time/Temp Display

12.6 VAC Power Supply

Measure the transformer primary inoperative for a

nominal 120 VAC input. Measure the secondary

voltage output which will be 12.5 to 15 VAC

normally. Recheck secondary output at rear of

Time/Temp Display. Terminals 1 to 3 should read

12.5 to 15 VAC. Terminals 1 to 2 and 2 to 3 should

be exactly 1/2 of the reading across 1 to 3. If you

do not get the above secondary readings, replace

the transformer. If 120 VAC primary voltage is not

available, refer to the schematic and trace circuit

for incoming power failure. There is a 4 amp fuse in

each red secondary lead. These may be jumpered

(for test only) to determine if they are defective or

intermittent.

NOTE:

(Dual Belt Ovens)

Dual belt ovens utilize a double pole double throw

switch, which allows either of the optical encoders

to be read from a single Time/Temp. Display.

Check switch and replace as needed.

Impinger I -–1000 Series Service Manual - Domestic

Temp Display out or

inaccurate

NOTE: Time/Temp displays

use two types of temperature

Place your pyrometer thermocouple into the center

between fingers T2 and T3 in the oven. Disconnect

sensor, Thermistor Probe – 2 the yellow tipped thermistor leads from the

yellow wires Thermocouple

Probe 1 red wire and 1 white

wire

time/temp. terminals 9 and 10. Measure the

resistance of the thermistor probe. See chart in

Section D for proper resistance readings.

Inspect the thermistor bulb for its proper location in

its spring holder. Check for short in leads where

they enter the sensor bulb. Also check each

thermistor lead for short to ground.

Thermistor Probe

Thermocouple Probe

Place your pyrometer thermocouple into the center

between fingers T2 and T3 in the oven. Connect

temperature meter to thermocouple at terminals 9

& 10 on back of the time/temp display (Be sure to

maintain proper polarity on thermocouple

connections.) Compare actual oven temperature

with the reading at the time/temp display. If the

temperature readings match, recalibrate or replace

time/temp display. If the readings do not match,

replace thermocouple probe.

Erratic time/temp display

If strange or unusual behavior is experienced such

as a rolling of numbers, lock up at a given number,

first check for a display circuit lock up. This can be

caused by a voltage spike or surge. To eliminate

this condition remove power from the time/temp.

display by shutting off the main fan switch, or if

display stays on, (older models) circuit breaker

interruption may be required. This should eliminate

the problem. If the problem continues, jumper the

two fuses in the red wires leading from the 12.6

VAC transformer to the display. If this does not

solve the problem, it may be coming in through the

commercial power lines. Suggest that customer

contact his power company for evaluation.

Perform the power supply check, the thermistor

probe check, and then perform the time/temp

simulator test. Refer to page 51 for instructions.

Remember, when using the time/temp simulator,

remove all the leads from the back of the display

except the 3 power leads. After completion of this

test and if reinstalling back into the oven, the dip

switches must be reset for oven operation.

Perform all checks as in the above evaluation. If

the time check is okay, refer to the next section

optical encoder.

The above time/temp test should have already

been performed. Remove dust cover from the

gearmotor and inspect the coupling and encoder

disc. The coupling set screws should be tight and

not slipping on the motor shaft or the tach.

generator shaft. The encoder disc should be firmly

attached to the coupling and not warped. Check

the positioning of the optical encoder disc. The disc

should not be touching the optical encoder

assembly and the encoder assembly should be

mounted so it is squarely facing the coupling shaft.

This is to allow the infrared beams to be broken by

the encoder disc. If all this is okay, then replace the

optical encoder assembly.

Temp Display inaccurate

erratic, or inoperative

Time display inaccurate

erratic, or inoperative

Optical Encoder

Impinger I -–1000 Series Service Manual - Domestic

Time Display

inaccurate, erratic, or

inoperative(S/N

Q19078 & Above1000

Series) (S/N Q14791 &

Above1200 Series)

Perform all checks as in the above evaluation. If

the time check is okay, refer to the next section.

Check to see if the conveyor drive (stepper) motor

is running. If motor is not running, refer to

"Conveyor will not run" on page 28.

Check to insure that the magnet (cemented to shaft

of conveyor drive (stepper) motor) has not been

damaged, or come loose from motor shaft.

Replace as needed.

Conveyor Drive (Stepper)

Control

Magnet

Hall Effect Sensor

Check for any physical damage to Hall Effect

sensor (mounted on conveyor drive(stepper)

motor). Check all wiring and connections for

damage.

Conveyor Drive (Stepper)

Control

Check all connections for tightness or proper

location and check all wiring for visible damage.

Replace as needed. If there is still no time display,

wire in (temporarily) a new conveyor drive control.

If there is still no time display, reconnect original

conveyor drive control. Replace Hall Effect Sensor.

Impinger I -–1000 Series Service Manual - Domestic

REMOVAL, INSTALLATION & ADJUSTMENTS

MODEL SERIES 1000 &1200

CAUTION !

BEFORE REMOVING OR INSTALLING ANY COMPONENT IN THE IMPINGER

OVEN BE SURE TO DISCONNECT ELECTRICAL POWER AND GAS SUPPLY

MOTOR, MAIN FAN

Shut off power at main breaker.

Remove flue by taking out the two (2) mounting screws.

Remove louvered motor cover from back of oven.

Remove wireway by taking out the ten (10) hex head screws.

NOTE: On Series 1200 ovens there are two (2) wireways to be removed and there is extra

wire coiled in the control box to allow the wires to hang below the oven back for removal.

Remove cooling fan if equipped.

Remove junction box cover below motor and disconnect motor leads. Make note of wire numbers

and location for reinstallation.

Remove the twelve (12) hex head bolts from the oven back and slide back straight out

of the oven .

Remove two (2) hex head bolts from fan hub and remove fan from motor shaft.

NOTE: Measure distance from fan blade to rear wall assembly before removal to aid in reassembly.

Remove the eight (8) hex head bolts from the motor mount and slide the motor assembly out of the

oven back.

Remove heat slinger, if so equipped, by taking out the two (2) hex head cap screws then

remove motor by taking off motor clamp and removing the four (4) mounting nuts and washers.

Reassemble in reverse order. When reassembling trim the motor mount bolts off after

the motor is mounted (if required). Be sure the heat slinger, if so equipped, is set at

the proper clearance. (3/8" approximately with 1/16" clearance at motor mount

bolts). When motor mount assembly is set on the oven back, align motor shaft in the

center of the hole. Set fan assembly on the motor shaft .

NOTE: Torque specs on bolts (150 in/lb. torque)

CAPACITOR, MOTOR

Shut off power at main breaker.

Remove motor cover from back of oven.

Discharge capacitor.

Remove and replace.

FAN, MAIN

Shut off power at main breaker.

Remove back assembly. (See motor, main fan)

S. N. 100-4612 (GAS)

S. N. 100-4767 (ELECTRIC)

Impinger I -–1000 Series Service Manual - Domestic

FAN BLADE

9 3/4 IN.

1/8 IN.

COOLING FAN

Reinstall and locate fan so that the front of fan blades are 9 3/4" from inside of oven back. (See Drawing)

S. N. 4613 & Above (GAS)

S. N. 4768 & Above (ELECTRIC)

FAN SPIDER

NOTE: MEASUREMENT MUST BE

MADE FROM CONE TO FAN SPIDER

FAN HUB

CONE

1 1/2 INCH

Reinstall and locate fan so that the bottom of the fan spider is 1 1/2" from the top of the oven back cone

(See Drawing)

RELAY, D.P.S.T.

Shut off power at main breaker.

Remove control panel top and front cover.

Remove cover from relay box.

Disconnect all wires and mark for replacement.

Remove relay by removing two (2) mounting screws.

Reassemble in reverse order.

COOL DOWN SWITCH

Shut off power at main breaker

Remove control panel top and front cover.

Remove the two (2) wires from the switch, located on the back wall of the control box.

Remove two (2) screws from the switch bracket.

Reassemble in reverse order, check condition of teflon insulator and be sure a aluminum

sensing rod contacts the switch body.

COOLING FAN, CONTROL BOX

Shut off power at main breaker.

Remove control panel top and front cover.

Remove four (4) screws from the fan frame.

Disconnect female cord receptacle and remove fan.

Reassemble in reverse order.

Impinger I -–1000 Series Service Manual - Domestic

THERMOSTAT, COOLING FAN

Shut off power at main breaker.

Remove control panel top and front cover.

Remove lead wires and mark for reassembly.

Remove two (2) screws and remove thermostat.

Reassemble in reverse order.

BURNER BLOWER MOTOR

Shut off power at main breaker.

Remove control panel top and front panel.

NOTE: Complete burner blower motor assembly, with control box (p/n 369359), is no longer

available. The burner blower assembly (p/n 369265) has been changed to a burner motor kit

(p/n 369366). When It is used in the 3 ft Impinger Gas oven, the following modification must be made:

Remove control box and components mounted on burner blower motor.

Mount transformer on air switch bracket as shown (use transformer as template).

Remove three (3) screws that attach blower assembly to burner housing.

Mount new blower assembly.

Wire as shown. See page 35.

Discard control box and relay.

Transfer air shutter assembly from old blower assembly to new blower assembly.

MATERIAL NEEDED: #29 drill bit and #8 x 3/8 self tapping screws (3 each)

AIR SWITCH MOUNTING BRACKET

MOUNTING HOLES

(USE #29 DRILL)

#8 X 3/8

SELF TAPPING

SCREW

SEPARATE GROUND SCREW

Impinger I -–1000 Series Service Manual - Domestic

CENTRIFUGAL

SWITCH

MOTOR

WIRING DIAGRAM

BURNER BLOWER ASSEMBLY

WITH RELAY REMOVED

24 VAC TO

IGNITION CONTROL

RED

TO GROUND TERMINAL

ON IGNITION CONTROL

GREEN

GROUND

24 VAC

TRANSFORMER

P/N 369531

(WHEN USING OLD

TRANSFORMER, 120

VAC LEADS ARE BLACK.

WIRE TERMINALS ARE

PROVIDED.)

120 VAC

WHITE

BLACK

(BUTTSPLICE CONNECTORS PROVIDED FOR 120 VAC POWER SUPPLY)

BLOWER WHEEL, BURNER

This is part of the burner blower motor assembly.

TO REMOVE THE BLOWER WHEEL FOR PERIODIC CLEANING:

Shut off power at main breaker.

Remove control panel top and front cover.

Remove air shutter held by 3 screws.

Loosen set screw on blower wheel hub and pull straight out.

Reassemble in reverse order.

NOTE: There is no critical placement of the blower wheel on the motor shaft. Just back as

far as it will go and then spin the blower to be sure it is not rubbing.

AIR PRESSURE SWITCH

Shut off power at main breaker.

Remove front control compartment cover.

Remove air switch cover plate.

Disconnect wiring and mark for reassembly.

Loosen 2 screws and remove air switch.

Disconnect 1/4" air tube.

Reassemble in reverse order.

Turn on power and calibrate air switch as follows:

Turn adjusting screw counter clockwise to full out position.

Turn main fan and heat switch on.

Turn adjusting screw clockwise until heat shuts off.

Turn adjusting screw counterclockwise 1/4 turn and unit should heat.

NOTE: Test as follows:

Oven must be tested in heated condition.

Remove main fan fuse. Main fan should shut down, deactivating air switch causing

heat to shut off in approximately 5 to 25 seconds.

Impinger I -–1000 Series Service Manual - Domestic

BURNER ASSEMBLY

Shut off power at main breaker.

Shut off gas supply.

Remove control panel top and front panel.

Remove gas control valve (See "GAS CONTROL VALVE")

Disconnect pilot tube.

Remove thermostat or solenoid valve.

Remove four (4) phillips screws that secure the burner backing plate.

Remove burner assembly from housing, the main and pilot orifice, flame target, pilot

shield (main and extension), flame sensor, and burner ignitor can now be changed or serviced as

needed.

Reassemble in reverse order.

GAS CONTROL VALVE

10.

Shut off power at main breaker.

Shut off gas supply.

Remove control panel top and front cover.

Disconnect the gas piping from the back of the unit.

Remove the four-(4) screws from the incoming nipple mounting bracket.

Remove incoming nipple.

Remove pilot tube assembly from control valve.

Disconnect pipe union just above control valve.

Disconnect wiring from control valve making note of wire numbers and location.

Reassemble in reverse order - after assembly is complete be sure to check manifold pressure

(3.5" W.C. NAT Gas/10" W.C. LP) and adjust if necessary. (See Section

"MANIFOLD PRESSURE-ADJUSTMENT")

NOTE: Check all gas line fittings for leaks after installation.

MANIFOLD ADJUSTMENT

SCREW LOCATED UNDER

COVER SCREW

FRONT VIEW

MANIFOLD PRESSURE

ADJUSTMENT CONNECTION

PILOT

LINE

CONNECTION

MANIFOLD ADJUSTMENT

SCREW LOCATED UNDER

COVER SCREW

TOP VIEW

Impinger I -–1000 Series Service Manual - Domestic

MANIFOLD PRESSURE - ADJUSTMENT

Remove control panel top and front cover.

WITH ELECTRIC POWER AND GAS OFF: remove the outlet pressure tap plug from the gas

control valve and install the adapter fitting and manometer.

Turn on electric power and gas and start-up oven.

With oven at full fire, manifold pressure should be (3.5"W.C. NAT/10" W.C. LP).

Turn off electric power and gas, replace cover screw, remove manometer and adapter;

replace pressure tap plug.

Check pressure tap for gas leaks before closing panel.

Close control panel and check system operation.

TEMPERATURE CONTROL VALVE (ROBERT SHAW)

Shut off power at main breaker

Shut off gas supply.

Remove control panel top and front cover.

Remove gas control valve (See Above).

Remove the two-(2) 3/8" x 16 nuts that hold main orifice bracket to the burner assembly.

Remove temperature control valve sensing bulb from oven cavity.

NOTE: It may be necessary to remove conveyor and fingers from oven cavity.

Remove piping from old temperature control valve.

Reassemble in reverse order, be sure the sensing bulb is properly placed in the oven

cavity. The sensing bulb is properly placed in the oven cavity when it is placed in

the spring holder and positioned with the 5 1/2" of the bulb to the left of the spring holder.

NOTE: The bypass screw should be adjusted all the way in.

SOLENOID VALVE

Shut off power at main breaker.

Shut off gas supply.

Remove control panel top and front cover.

Remove gas control valve (See "GAS CONTROL VALVE").

Disconnect wires from solenoid valve.

Remove two (2) 3/8" x 16 hex nuts that hold main orifice bracket in place.

Remove solenoid valve assembly.

Remove piping from solenoid valve.

Reassemble in reverse order.

TEMPERATURE CONTROL BOARD

GAS OVENS

Shut off power at main breaker.

Remove control panel top and front cover.

Remove relay box cover.

Disconnect wiring from temperature control board.

Make note of wire number and location for reinstallation.

Reassemble in reverse order.

ELECTRIC OVENS

Shut off power at main breaker.

Remove control panel top and front cover.

Disconnect wiring from temperature control board.

Make note of wire numbers and location for reinstallation.

Reassemble in reverse order.

Impinger I -–1000 Series Service Manual - Domestic

TEMPERATURE CONTROL POTENTIOMETER – REPLACEMENT

Remove control panel top and front cover.

Remove one screw from control knob guard and move guard to one side.

Remove knob and locknut on control pot. shaft and push out.

Remove three (3) wires from temperature control board. Note wire numbers and location.

Reassemble in reverse order.

MERCURY CONTACTOR

Shut off power at main breaker.

Remove control panel top and front cover.

Disconnect contactor wires and mark for reinstallation.

Remove screws from mounting bracket and replace contactor.

NOTE: Be sure contactor is not mounted upside down as this will cause a constant on condition.

Reassemble in reverse order.

THERMOCOUPLE- REPLACEMENT

Remove control panel top and front cover.

Remove cover from relay box.

Slide thermocouple out of oven chamber.

NOTE: Remove conveyor and bottom fingers to aid in removal and installation of thermocouple.

Remove two (2) wires from temperature control board. Make note of wire numbers or color and location

for reinstallation.

Reassemble in reverse order making sure the metal end on the thermocouple is securely in the wire

form in the oven chamber.

THERMOCOUPLE MEASUREMENT CHART:

EXPLANATION: The junction temperature is the ambient air temperature where the thermocouple fastens

to the electronic temperature control board.

200°F 250°F 300°F 325°F 350°F 400°F 425°F 450°F 500°F 550°F 600°F

90°F

88°F

86°F

84°F

82°F

80°F

78°F

76°F

75°F

74°F

72°F

70°F

68°F

66°F

64°F

62°F

60°F

3.26

3.32

3.37

3.43

3.49

3.55

3.60

3.66

3.69

3.72

3.78

3.83

3.89

3.95

4.01

4.06

4.12

4.77

4.83

4.88

4.94

5.00

5.06

5.11

5.17

5.20

5.23

5.29

5.34

5.40

5.46

5.52

5.57

5.63

6.30

6.36

6.41

6.47

6.53

6.59

6.64

6.70

6.73

6.76

6.82

6.87

6.93

6.99

7.05

7.10

7.16

7.06

7.12

7.17

7.23

7.29

7.35

7.40

7.46

7.49

7.52

7.58

7.63

7.69

7.75

7.81

7.86

7.92

7.83

7.89

7.94

8.00

8.06

8.12

8.17

8.23

8.26

8.29

8.35

8.40

9.37 10.14 10.91 12.46 14.00 15.53

9.43 10.20 10.97 12.51 14.05 15.59

9.49 10.26 11.03 12.57 14.11 15.65

9.54 10.31 11.09 12.63 14.19 15.71

9.60 10.37 11.14 12.69 14.23 15.76

9.66 10.43 11.20 12.74 14.28 15.82

9.72 10.49 11.26 12.80 14.34 15.86

9.77 10.55 11.32 12.86 14.40 15.94

9.80 10.57 11.35 12.89 14.43 15.97

9.83 10.60 11.37 12.92 14.46 15.99

9.89 10.66 11.43 12.97 14.51 16.05

9.95 10.72 11.49 13.03 14.57 16.11

8.46 10.00 10.78 11.55 13.09 14.63 16.17

8.52 10.06 10.83 11.61 13.15 14.69 16.23

8.58 10.12 10.89 11.66 13.20 14.74 16.28

8.63 10.18 10.95 11.72 13.26 14.80 16.34

8.69 10.24 11.01 11.78 13.32 14.86 16.40

Impinger I -–1000 Series Service Manual - Domestic

HEATING ELEMENT

Shut off power at main breaker.

Remove rear motor cover.

Disconnect heater element wire and mark for reassembly.

Remove oven back assembly.

NOTE: For ovens SN 4768 and above, remove fan shroud.

Remove two (2) mounting screws and remove heating element.

Reassemble in reverse order.

NOTE: Be sure the lead terminals are double nutted to the heating element and are tight

If the leads are not attached in this manner, a loose connection may result, causing

arcing and lead wire burn off.

IGNITION CONTROL

NOTE: When replacing Johnson Controls, G-60 or G-65 Ignition Control with the new Honeywell Ignition

control, the 24 VAC burner transformer (rated at 20VA) must be replaced with the larger (rated at 40VA)

#369531 Transformer.

Read all instructions supplied in kit before starting.

Tools required: Center punch and 7/32" drill bit.

Shut off power at main breaker.

Remove control panel top and front panel.

Remove front panel.

Remove ignition control package from Johnson gas valve and discard.

The white flame sensor wire, from the burner to terminal #4 on Johnson gas control

is no longer used. Cut Wire at burner and discard.

NOTE: On some Impinger ovens, it may be necessary to drill the mounting holes through the

oven specification plate. Use care to avoid drilling through any important

information or agency approval markings on the specification plate.

Use template supplied to locate and drill two (2) 7/32" mounting holes for new Ignition

Control. When mounting new ignition control, make certain that the green #67 ground

wire (supplied) is installed properly.

Connect wiring as follows:

Connect blue wire from gas valve to terminal marked P.V. on ignition control.

Connect black wire from gas valve to termainal marked M.V./P.V. on ignition control.

Connect red wire from gas valve to terminal marked M.V. on ignition control.

Connect white wire from indicator light to ground, by using splice connection on green

wire supplied.

Connect orange spark lead from burner to terminal marked "spark" on ignition control.

NOTE: It may be necessary to replace ignition cable terminal with .250" quick-

connect terminal (supplied).

Connect the red wire from burner blower motor centrifugal switch to terminal marked

24V on ignition control.

Connect green #68 wire (supplied) from terminal 24 GND to terminal GND (burner)

to ground.

Connect the green wire from 24VAC transformer to wire #68 at terminal marked

24V(GND) on ignition control.

The Honeywell ignition control module provides 100% safety lockout. Control will try for

ignition for 15 seconds. If ignition does not occur, control will lockout or shut off. To

reset control, the burner switch must be turned off for 1 minute.

Impinger I -–1000 Series Service Manual - Domestic

24V (GND)

24V

WHITE FROM

PILOT LIGHT

BUTT SPLICE AND

NEW GREEN WIRE

SUPPLIED IN KIT

BLUE FROM VALVE

BLACK FROM VALVE

#3 RED FROM VALVE

TO PILOT LIGHT

WHITE FROM PILOT LIGHT

BUTT SPLICE AND NEW

GREEN WIRE SUPPLIED

IN KIT

TO PILOT LIGHT

RING TERMINAL END OF

WIRE HARNESS SUPPLIED IN KIT

24V FROM TRANSFORMER

INSULATED MALE TAB

CONNECTOR

Impinger I -–1000 Series Service Manual - Domestic

FLAME SENSOR

Shut off power at main breaker.

Remove control panel top and front cover.

Remove burner assembly (see burner assembly).

Disconnect one (1) wire from flame sensor.

Remove flame sensor by removing one (1) mounting nut.

Reassemble in reverse order.

NOTE: Be sure flame sensor is not bent or touching any other burner parts.

BURNER IGNITOR

Shut off power at main breaker.

Remove control panel top and front cover.

Remove burner assembly.

Remove flame sensor.

Remove pilot shield and pilot shield extension.

Remove burner igniter.

Reassemble in reverse order.

NOTE: Be sure to reconnect burner igniter cable to ignition control.

TRANSFORMER 120/24 VAC

Remove control panel top and front cover.

Remove control box cover from burner blower motor.

NOTE: The complete burner blower motor assembly, with control box (PN 369359), is no longer

available. The blower motor assembly (PN 369265) has been changed to a

burner motor kit (PN 369366). If the burner blower motor or 24V transformer

(PN 369531 ) are replaced, the following modifications must be made:

Shut off power at main breaker.

Remove control box and components from burner blower motor.

Mount transformer on air switch bracket (use transformer as template).

Discard control box and relay. Material needed: #29 drill bit and #8 x 3/8" self tapping screws (3 each)

See Burner blower motor section for wiring information.

Replace covers and check system operation.

BURNER LIGHT (24 VAC) - GAS OVENS

Shut off power at main breaker.

Remove control panel top and front panel.

Remove access cover.

Remove two wires from burner light, note number and location.

Grasp body of light assembly and slide sideways to remove.

Reassemble in reverse order and check.

HEAT LIGHT (125 VAC) - ELECTRIC OVENS

Shut off power at main breaker.

Remove control panel top and front panel.

Remove two (2) wires from heat light, note number and location.

Grasp body of light assembly and slide sideways to remove.

Reassemble in reverse order and check.

THERMOSTAT, Hl-LIMIT - ELECTRIC OVENS

Shut off power at main breaker.

Remove control panel top and front cover.

Remove the two-(2) wires from the thermostat located on the back wall of the control box.

Remove two (2)-mounting screws.

Reassemble in reverse order.

NOTE: Be sure to press red "reset" button on new thermostat to ensure that it is in the

"closed" position.

Impinger I -–1000 Series Service Manual - Domestic

PILOT ORIFICE - BURNER

Shut off power at main breaker.

Shut off gas supply.

Remove burner assembly (see Burner Assembly).

Remove pilot line from pilot orifice.

Remove pilot orifice from burner igniter.

Reassemble in reverse order.

MAIN ORIFICE - BURNER

Shut off power at main breaker.

Shut off gas supply.

Unbolt temperature control valve assembly (see Temperature Control Valve) and

carefully rotate to access main orifice bracket.

NOTE: Be sure not to damage capillary tube.

Remove main orifice from orifice bracket.

Reassemble in reverse order.

Check all gas fittings for leaks.

POTENTIOMETER - CONVEYOR SPEED CONTROL

Shut off power at main breaker.

Remove control panel top and front panel.

Remove conveyor speed control dial.

Remove mounting nut from pot. shaft.

Remove pot. from front panel.

Disconnect pot. wiring from conveyor control board.

Remove pot. assembly.

Reassemble in reverse order.

DIAL, CONVEYOR SPEED CONTROL (NON-DIGITAL DISPLAY OVENS)

Shut off power at main breakers.

Remove dial by loosening set screws.

Set new dial indicator to "000" in window and lock.

Turn speed control pot. shaft to its minimum speed position.

Slide dial assembly onto pot. shaft and tighten set screw.

DIAL, CONVEYOR SPEED CONTROL (OVEN WITH DIGITAL DISPLAY)

Shut off power at main breaker.

Remove old dial by loosening set screw.

Remove shaft locking nut.

Install new shaft locking nut.

NOTE: This is a friction type locking nut do not try to trim this nut to fit.

Install new dial by sliding over pot. shaft and tightening set screw.

CONVEYOR MOTOR REPLACEMENT - BODINE (SN 100-4389)

Shut off power at main breaker.

Remove control panel top and front panel.

Remove the conveyor drive chain from the motor sprocket.

Remove chain guard.

Remove the sprocket from the conveyor motor shaft by loosening the set screws and sliding

the sprocket off the shaft.

Unplug the conveyor motor wiring harness.

Remove the four (4) mounting bolts and nuts.

Reassemble in reverse order and calibrate the conveyor D. C. control board (See D. C. Motor

Control Board - Calibration, Bodine System).

Impinger I -–1000 Series Service Manual - Domestic

CONVEYOR MOTOR REPLACEMENT - BALDOR

1000 SERIES SN 4390 - 14974

1200 SERIES SN 4390 – 14791

Shut off power at main breaker.

Remove control panel top and front cover.

Remove the conveyor drive chain from the motor sprocket.

Remove chain guard.

Remove the sprocket from the conveyor motor shaft by loosening the set screws and sliding

the sprocket off the shaft.

Unplug the wiring harness for the motor.

Disconnect the red and black wires from the terminals on the tach. generator which is mounted on the

top of the D.C. conveyor motor. Note which terminal the red and black wires are attached to.

(Reversing the polarity will cause motor to run wide open with no control from the speed pot.)

Remove the four (4) mounting bolts.

Remove dust cover, remove tach., tach. bracket, coupling, and optical encoder assembly for

reinstallation on new motor assembly. (See page 82)

10.

Reassemble in reverse order and calibrate in the conveyor D. C. control board (See D. C. Motor Control

Board - Calibration).

CONVEYOR MOTOR REPLACEMENT - STEPPER

1000 SERIES SN14975 AND ABOVE

1200 SERIES SN14792 AND ABOVE

Shut off power at main breaker.

Remove control panel top and front cover.

Remove the chain guard.

Remove the conveyor drive chain from the motor sprocket.

Remove the sprocket from the conveyor motor shaft by loosening the set screw and sliding the sprocket

off the shaft.

Unplug the wire harness for the motor.

Unplug the wire harness for the hall effect sensor (mounted on motor) from the conveyor speed control.

Remove the four (4) mounting bolts and washers.

Reassemble in reverse order and calibrate the control board. (See Stepper Control-Adjustment)

NOTE: New drive motors will come as an assembly with Magnet and Hall Effect Sensor. The

magnet and sensor will also be available as a replaceable spare part. (When replacing the magnet be

sure to clean shaft and locate new magnet up against the shoulder on the shaft.)

COUPLING AND ENCODER DISC

Shut off power at main breaker.

Remove conveyor motor assembly.

Remove dust cover above motor.

Loosen both allen set screws (.050 inch allen wrench) located on coupling hub.

Remove 3 screws from tach. bracket, loosen the 4th.

Remove encoder assembly, see optical encoder assembly in following procedure. Pushing coupling down

on motor shaft. Swivel tach. bracket aside and remove coupling. To install, push coupling on to motor

shaft. The encoder disc must be nearest motor.

Refasten tach. bracket in proper alignment.

Tighten the set screw on the tach. side first maintaining the .010 minimum dimension

between the coupling hub and tach.

Pull the coupling apart (approximately 1/8",3.2mm) and fasten the motor side set screw.

If the optical encoder was loosened, refer to optical encoder in this section for adjustment.

NOTE: The thin, slotted encoder disc must be handled with care so not to bend it.

Recheck tightness on the set screws to be sure they are tight. If available, LOC TITE (the

removable kind) should be used to secure set screws.

10.

Impinger I -–1000 Series Service Manual - Domestic

OPTICAL ENCODER ASSEMBLY

Shut off power at main breaker.

Remove conveyor motor assembly .If replacing with new assembly, cut wires to remove as new wires

and plug are provided. If only removing for access to coupling follow step 4.

Remove pins from connectors with pin extractor tool, P/N 369600.

Loosen dust cover screws and pull dust cover away from motor.

Remove 2 screws from optical encoder and remove encoder.

Reassemble in reverse order. To adjust optical encoder: Position the encoder assembly so it does not rub

the coupler hub and is square with the encoder disc. The infrared light beam will be broken by slots in the

encoder disc. The encoder disc should not touch the bottom or top of the optical encoder. If it does

readjust the coupling. The digital speed readout may be observed to check proper adjustment of the

optical encoder assembly.

TACH. GENERATOR

Shut off power at main breaker.

Remove conveyor motor assembly .

Remove tach. cover plate and tach. Ieads. Mark lead position.

Remove 2 slotted screws from dust cover base and remove dust cover.

Loosen coupling set screw (.050 inch allen wrench).

Remove tach. bracket from motor.

Remove 4 screws from base of tach. and tach. is now free for removal.

Reassemble in reverse order. Maintain spacing of .010 minimum between tach. Bracket

and coupler hub.

NOTE: If a new tach. generator is installed, the D.C. motor control board MUST BE

RECALIBRATED There is no repair procedure for the tach. If defective, replace.

CONVEYOR MOTOR CONTROL BOARD

Shut off power at main breaker.

Remove control panel top and front cover.

Remove cover from relay box.

SN 100-4389 BODINE SYSTEM

Remove wires from terminal strip on control board making sure to mark wires so they

will be reinserted on the proper terminal.

Remove the four (4) hex head screws.

Reassemble in reverse order and calibrate (See D. C. Motor Control Board - Calibration, Bodine System)

SN 4390-14974 1000 SERIES GAS OVENS

SN 4390-14791 1200 SERIES GAS OVENS

Make note of wire number and location before removing them from the control board.

POLARITY BETWEEN, T1-T2 AND A+ AND A- IS CRITICAL. The bottom mounting screw need

only be loosened as the mounting bracket for the control board is slotted. Remove top two

(2)mounting screws and remove control board.

NOTE: Exchange boards on the mounting bracket before reinstallation.

Reassemble in reverse order and calibrate (See D. C. Motor Control Board - Calibration)

SN 14975 AND ABOVE 1000 SERIES GAS OVENS

SN 14792 AND ABOVE 1200 SERIES GAS OVENS

Make note of wire numbers and location before removing them from the control board.

The bottom mounting screw need only be loosened as the mounting bracket for the control

board is slotted. Remove top two (2) mounting screws and remove control board.

Reassemble in reverse order and calibrate. (See Stepper Control-Adjustment)

D. C. MOTOR CONTROL BOARD - CALIBRATION

SN 100 to 4389 - BODINE SYSTEM

Remove control panel top and front cover.

Remove cover from relay box.

Identify D. C. control board and calibrate as per the following instructions:

NOTE: THE USE OF A DIGITAL VOLTMETER IS NECESSARY FOR PROPER ADJUSTMENT

Check incoming AC voltage at L1 and L2. Should be 120 VAC 10%.

Check field voltage at terminals F1 and F2. Should be 100 VDC 10 volts.

Turn speed control dial clockwise to its maximum speed position.

Impinger I -–1000 Series Service Manual - Domestic

PLACE DIGITAL VOLTMETER LEADS ON terminal S1 and S2, adjust the max pot. for a

reading of 3.4 VDC.

Place METER LEADS on terminals A1 and A2. Adjust the reg. pot. for a reading of 125 VDC.

NOTE: In some instances when the input AC voltage runs on the high side of the normal

input range, you may have difficulty adjusting the max. pot. for a reading of 3.4 VDC. In this

instance, a reading of 3.45 VDC is acceptable.

Adjust speed pot to obtain the proper time setting for the conveyor to meet customers desired

speed .

Check conveyor travel in a no load situation to insure conveyor belt is traveling at a constant

speed.

GND

S 3

S 2

3 A.

FUSE

S 1

A 2

A 1

F 2

F 1

L 2

L 1

D. C. CONTROL BOARD "BODINE" S/N 100-4389

REG

MIN

MAX

TERMINAL

STRIP

3 A. FUSE

D. C. CONTROL BOARD "BODINE" S/N 100 4389

( TOP VIEW )

Impinger I -–1000 Series Service Manual - Domestic

D. C. MOTOR CONTROL BOARD

SN 4390 - 14974 1000 SERIES GAS OVENS

SN 4390 - 14790 1200 SERIES

Three different styles of control boards have been used and all three are still usable. All three were supplied

under the same part number.

STYLE 1 CONTROL BOARD ADJUSTMENT

NOTE: A digital meter must be used for this adjustment.

Voltage at L1 and L2 terminals of the control board is to be 120 VAC 10%

Connect a digital volt meter to terminals A+ and A-, set meter on 200 VDC scale.

Turn speed control pot. (on oven control panel) to its maximum speed setting.

Turn "MAX", "MIN", and "IR" pots counter clockwise until they stop (DO NOT turn CL pot.)

Adjust "TACH" pot. so the volt meter indicates 110 VDC 0.5 volts.

Adjust "IR" pot. to read between 1.5 and 2 VDC above tach. reading.

(Example: If tach. reading would be 110.3 then adjust IR to between 111.8 VDC and

112.3 VDC)

Turn speed control pot. to its minimum speed setting.

Adjust "MIN" pot. so the voltmeter indicates between 2 and 6 VDC.

Turn speed control dial to obtain a reading of 22 VDC on your meter. Observe for approximately

30 seconds to see if stable within 0.5 VDC. Repeat at 35 VDC.

Check speed of conveyor and adjust time/temp. display if necessary.

Seal pots with Glyptol or nail polish.

L 1

A+

L 1

A +

4 A. FUSE

1 A. FUSE

CHOKE

RESISTOR

4 A. FUSE

1 A. FUSE

L 2

A -

P 2

P 3

P 1

P 3

P 1

MAX

MIN IR

TACH T 1

T 2

MAX

MIN IR

CL TACH

T 1

T 2

BOARD P/N 369155

STYLE 1

" B " BOARD P/N 369272

STYLE 2 AND STYLE 3 CONTROL BOARD ADJUSTMENT

NOTE: A digital meter must be used.

Voltage at L1 and L2 terminals of the control board is to be 120 VAC 10%.

Connect a digital voltmetet to terminal T1 and T2, set the meter on DC scale.

Turn speed control pot. (on oven control panel) to its maximum speed setting.

Adjust the "MAX" pot. so the voltmeter indicates 22.6 to 22.8 VDC.

Turn the speed control pot. to its minimum speed setting.

Adjust the "MIN" pot. so the voltmeter indicates 1.4 to 1.5 VDC.

Reset the speed control pot. to its maximum speed setting and check if voltage is still at 22.6

to 22.8 VDC. Readjust if necessary.

Reset the speed control pot. to its maximum speed setting and check if voltage is still at 1.4 to

1.5 VDC. Readjust if necessary.

If readjustment of either the "MAX" or "MIN" pot. was necessary, the opposite must always be

Impinger I -–1000 Series Service Manual - Domestic

checked until both "MIN" and "MAX" are in proper adjustment.

Measure the speed of the conveyor and adjust the time/temp. display if necessary.

Seal pots with Glyptol or nail polish.

NOTE: Occasionally a new board (Style 2 and 3 only) is so far out of adjustment that you will be

unable to adjust the correct voltage. To correct, turn both the "MAX" and "MIN" pots 10 turns in

either direction and then 5 turns in opposite direction. This will center the

pots and allow them to be calibrated. If after this procedure, the board will not adjust,

it is probably defective.

L 1

A+

L 1

A +

4 A FUSE

4 A. FUSE

1 A FUSE

RESISTOR

CHOKE

4 A FUSE

1 A. FUSE

L 2

A -

CHOKE

P 2

P 3

P 1

P 3

P 1

MAX

MIN

MAX

MIN

T 1

T 2

T 1

T 2

BOARD P/N 369155

STYLE 2

" B " BOARD P/N 369272

L 1

L 2

A -

A +

RESISTOR

CAPACITOR

MIN MAX

S 3

S 1

T 1

T 2

S 2

BOARD P/N 369155

STYLE 3

Impinger I -–1000 Series Service Manual - Domestic

STEPPER CONTROL - ADJUSTMENT

S/N 14975 AND ABOVE 1000 SERIES GAS OVEN

S/N 14792 AND ABOVE 1200 SERIES GAS OVEN

CURRENT SENSE

DO NOT ADJUST

Heat Sink

MOTOR

J 6

J 3

J 1

J 4

J 5

5 4 3 2 1

Min.

Conveyor

Speed Adj.

Max.

Conveyor

Speed Adj.

Brown

Red

Blue Red

Gray

POWER

LOCKED ROTOR

POTENTIOMETER

Black to #4

White to #7

To T/T display

TIME/TEMP

With power off, the five (5) dip switches located on the conveyor control (see drawing

above) should be set as below.

DIP SWITCHES

CONTROL

SWITCH POSITION

OFF OFF ON OFF OFF

With power off, the ten (10) dip switches located on rear of Time/Temp Display (see

drawing on page 52) should be set as below.

DISPLAY

SWITCH POSITION OFF

ON OFF

OFF ON

ON OFF ON

*SWITCH 2 - OFF FOR 60HZ, ON FOR 50HZ

*SWITCH 3 - OFF FOR °F, ON FOR °C

With conveyor running, set conveyor speed control so Time/Temp. Display indicates 5:00 minutes. Place

a pan on the conveyor, measure (STOPWATCH) the time (SPEED OF PAN) of the leading edge in to

leading edge out of oven. Turn the speed adjustment pot. on the rear of the Time/Temp. Display so

display agrees with time measured by the stop watch. (See drawing on page 52).

Turn conveyor speed control fully counterclockwise and adjust the stepper control maximum speed pot

(refer to drawing above) so the display indicates 50 seconds.

Turn conveyor speed control fully clockwise and adjust the stepper control minimum speed

pot so the display indicates 30 minutes.

NOTE: Repeat 4 and 5 to be sure settings are accurate.

Turn power off and set #1 dip switch to its (ON/OFF) other position and verify that the

conveyor reverses direction when power is applied. Set conveyor travel direction as

customer requests.

CAUTION: ALWAYS REMOVE POWER BEFORE CHANGING CONVEYOR DIRECTION.

Impinger I -–1000 Series Service Manual - Domestic

REVERSING CONVEYOR DIRECTION

SN 100-4389 (BODINE)

Shut off power at main breaker.

Remove control panel top.

Turn reversing switch (located on relay box) to obtain desired belt direction.

Reassemble in reverse order.

SN 4390-14974 1000 SERIES GAS OVEN

SN 4390-14791 1200 SERIES

All ovens leaving our plant are wired to operate conveyors from left to right. To reverse conveyor

direction, use the following procedure.

Shut off power at main breaker.

Remove control panel top.

Remove cover from relay box.

Reverse wires fastened to terminals A+ and A-.

Reverse wires fastened to terminals T1 and T2. Both set of leads must be reversed or oven

will run at maximum speed with no speed adjustment possible.

STEPPER DRIVE SYSTEM

SN 14975 AND ABOVE 1000 SERIES GAS OVEN

SN 14792 AND ABOVE 1200 SERIES

Shut off power at main breaker.

Remove control panel top.

Remove relay box cover.

Change position of dip switch #1 on stepper control board.

Reassemble in reverse order.

MINI CIRCUIT BREAKER

Shut off power at main breaker.

Remove control panel top and front panel.

Disconnect two (2) wires from circuit breaker.

Remove knurled mounting nut and remove.

Reassemble in reverse order.

NOTE: Be sure to reset breaker before operating.

BEARING, CONVEYOR

SN 100-2163

Remove conveyor from oven and place of flat surface.

Remove connecting links from conveyor belting. See Installation and Operting Instructions Manual.

Remove conveyor belting from conveyor.

DRIVE END

Remove drive sprocket from drive shaft.

Remove drive shaft from end of conveyor frame.

Remove bearing retaining clips from ends of drive shaft.

Slide bearing off drive shaft.

Reassemble in reverse order.

IDLER END

Remove idler shaft from end of conveyor frame.

Slide bearing off idler shaft.

Reassemble in reverse order.

Impinger I -–1000 Series Service Manual - Domestic

BEARING, CONVEYOR

SN 2164 AND ABOVE

Remove conveyor from oven and place on a flat work surface.

Remove connecting links from conveyor belting. See Installation and Operating Instructions Manual .

Remove conveyor belting from conveyor

DRIVE END

Remove drive sprocket from drive shaft.

Remove two (2) allen head bolts.

Remove drive shaft and bearing assembly from conveyor frame.

Reassemble in reverse order.

IDLER END

Remove idler shaft/bearing/mounting plate assembly from conveyor frame.

Remove bearing/mounting plate assembly from conveyor.

Remove bearing from mounting plate.

Reassemble in reverse order.

TRANSFORMER-STEPPER MOTOR CONTROL

Shut off power at main breaker.

Remove control panel top and front cover.

Disconnect transformer wire harness.

Remove two (2) mounting screws.

Reassemble in reverse order.

HALL EFFECT SENSOR – REPLACEMENT

NOTE: There are two (2) styles of hall effect sensors - (See Drawing).

OLD STYLE

Remove two (2) screws from conveyor drive motor and break away hall effect sensor from motor shaft. To

install new sensor, cut sensor bracket through center hole and install sensor

half with one (1) screw. Reinstall plug on conveyor control.

NEW STYLE

Remove two (2) mounting screws and remove sensor from conveyor motor. Reinstall in reverse order.

CUT

HERE

DISCARD

NEW STYLE

OLD STYLE

Impinger I -–1000 Series Service Manual - Domestic

TEMPERATURE GAUGE - REPLACEMENT

Shut off power at main breaker.

Remove control panel top.

Disconnect thermocouple from temperature gauge.

Remove two (2) mounting bolts and remove temperature gauge.

Reassemble in reverse order.

THERMISTOR - REPLACEMENT

Shut off power at main breaker.

Remove control panel top.

Slide thermistor probe out of oven chamber.

NOTE: Remove conveyor and bottom fingers to aid in removal and instaliaticn of thermistor probe.

Disconnect wires from back of digital display at terminal strip (location #9-10).

Reassemble in reverse order making sure the probe is placed securely in the wire form in the oven

chamber.

Reconnect to digital display and calibrate. (See Time/Temperature Display - Replacement and

Calibration)

To test the thermistor probe, refer to the following chart and instructions

OVEN TEMPERATURE

300º F

182

325º F

138

350º F

102

400º F

425º F

450º F

500º F

550º F

OHMS

Place test pyrometer thermocouple and preheat oven as specified under temperature calibration.

Disconnect the thermistor probe from terminals 9 and 10 and measure the resistance across the 2 yellow

leads. Refer to the above chart to determine if probe is producing the proper resistance.

EXAMPLE: The probe resistance at 500°F(260°'C) should be 24 ohms.

TRANSFORMER, TIME/TEMP. DISPLAY

Shut off power at main breaker.

Remove control panel top.

Remove relay box cover.

Disconnect two (2) wires at base of transformer and three (3) wires at terminals 1,2, and 3 on Time/Temp

Display.

Remove two (2) mounting screws.

Reassemble in reverse order.

TIME/TEMPERATURE DISPLAY - REPLACEMENT & CALIBRATION

Shut off power at main breaker.

Remove control panel top.

Disconnect wires from rear of display. Make note of wire numbers and location for reinstallation.

Remove four (4) screws from display bezel (2 top/2 bottom) and remove display.

Install new display in reverse order. Note dip switch position and calibrate display as follows:

Check all wire connections to insure proper tightness.

Check dip switch setting to insure proper positions for the model of oven:

Impinger I -–1000 Series Service Manual - Domestic

ALL 1000 & 1200 SERIES OVENS

SWITCH SETTINGS

TYPE I

OFF

OFF*

TYPE II

TYPE III

OFF

OFF*

OFF** ON

OFF

(Baldor Motor)

TYPE III

(Stepper Motor)

TYPE IV

(Baldor Motor)

TYPE IV

(Stepper Motor)

OFF

OFF*

OFF

OFF** ON

OFF

*These switches are for Hertz settings (OFF=60HZ) & (ON=50HZ)

**These switches are for temperature read-out (OFF=Degrees F) & (ON=Degrees C)

Turn power on.

Calibrate time:

Place an object on the conveyor belt and time with a stopwatch, the elapsed time for

the object to travel through the oven. (Leading edge in to leading edge out.)

Push in and hold the set button.

Adjust the time calibration pot on the rear of the module until the display numbers

match the measured time. Seal adjustment pot. with Glyptol or nail polish.

Calibrate temperature:

Place a temperature sensor in between top two fingers and set temperature control to

500°F; allow temperature to stabilize.

"Fine Tune" temperature setting to achieve measured temperature swings from

497°F to 503°F. So if actual temperature falls between 497°F and 503°F the display

must show 500°F. Adjust temperature calibration pot to achieve a display reading of

500°F(260°C).

DIP SWITCH MODULE

(TYPE I AND II HAVE ONLY 6 SWITCHES)

TEMP

TIME

TEMP CAL

SWITCH POSITION

OFF

FROM

TRANSFORMER

SET

SWITCH

THERMISTOR

PROBE

TO CONVEYOR

MOTOR PICK UP

To identify the module, measure the width of the case.

Type I is 51/8 inches wide

Type II is 5 5/8 inches wide

Type I & II have a 6 position dip switch module.

Type III has a 10 position dip switch module.

Type IV is 5 5/8 inches wide x 3 ¼ inches deep

Impinger I -–1000 Series Service Manual - Domestic

Type IV has adjustment pots. In the center board.

If temperature is still inaccurate after above calibration and troubleshooting, use the following

to check the High Temp. Pot. normally the High Temp. Pot. does not require

adjustment. Occasionally the pot is accidentally moved or needs adjustment. Refer to the

following drawing showing proper adjustment of the High Temp. Pot.

BOTTOM OF TIME TEMP DISPLAY

test leads here

reading should be 26 .5 ohms if not, adjust.

pot. range 0-34 ohms

SWITCH, DISPLAY, SET

Shut off power at main breaker.

Remove control panel top.

Disconnect wires from time/temp. display terminals 5 and 6.

Pull off black operating knob and remove hex mounting nut.

Reassemble in reverse order.

PROCEDURE FOR USE OF TIME/TEMP. SIMULATOR

NOTE: DO NOT CHANGE HI TEMP POT.

TEST PROBES SHOULD

READ 18 OHMS

Check incoming power to display at Terminals 1, 2, and 3. Approximately 13 VAC at 1-3, 6.5

VAC at 1-2, 6.5 VAC at 2-3.

WithpowerOFF,removeleadsfrom4,5,6,7,8,9,and10.Installtime/temp.simulator to terminals 4,7,9,10.

To identify display type: (MEASURE WIDTH OF COVER ON DISPLAY)

Type I is 51/8 inches wide.

Type II is 5 5/8 inches wide.

Type I & II have a 6 position dip switch module.

Type III has a 10 position dip switch module.

Impinger I -–1000 Series Service Manual - Domestic

Dip Switch

TYPE I

TYPE II

TYPE III

OFF

NOTE: When on 50 HZ power, dip switch #2 must be "ON"

With power ON turn time and temperature cal. pot. fully counterclockwise.

Display should read: (Wait 15-20 seconds)

TYPE I 9:30 + 10 sec.475 + 10°F

TYPE II 9:20 + 10 sec. HHH

TYPE III 9:35 + 10 sec. 635 + 10°F

Turn time and temp. cal. pot. fully clockwise.

Display should read: (Wait 15-20 seconds)

TYPE I 10:20 + 10 sec. 615 + 10°F

TYPE II 10:10 + 10 sec. 475 + 10°F

TYPE III 10:20 + 10 sec. 475 + 10°F

Turn time pot. to 10:00 minutes and temp. pot. to 540°F.

Time reading 10:00 5 seconds.

Temperature reading should be steady at 540°F + 10°F.

If these readings are not achieved, replace display.

NOTE: After simulator test is completed, the oven Time/Temperature Display must be re-calibrated.

SWITCH REPLACEMENT (FAN, HEAT, CONVEYOR)

Shut off power at main breaker.

Remove control panel top and front cover.

Remove switch access cover.

Depress the spring clips on the sides of the switch and push out.

Remove wires from back of switch. Note wire number and location.

Install new switch in reverse order and check.

SWITCH REPLACEMENT - (FAN SWITCH UPDATE)

INSTALLATION OF DOUBLE POLE FAN SWITCH #369260 IN PLACE OF SINGLE POLE

FAN SWITCH #350705

NOTE:

This change is not necessary for proper operation of oven nor is it

permissible to change under warranty. Should be changed only at

customer's request and their agreement to pay your bill.

Allows time/temp. display, in older models, to operate same as current

production models. Also allows locked time/temp. display (caused by

voltage surge, interruption or spike) to be reset by fan switch rather than

circuit breaker.

ADVANTAGE:

IDENTIFICATION: To determine which fan switch you have, observe if temperature displays

stays on during cooling down. If it stays on , you have the single pole

switch. If it goes out as soon as fan switch is turned off you have the double

pole switch.

REPLACEMENT: Replace single pole switch # 350705.

Install double pole switch # 369260.

Disconnect lead indicated by # in proper diagram and reroute as shown.

Install jumper lead indicated by * in proper diagram.

Reapply all other leads as removed.

Impinger I -–1000 Series Service Manual - Domestic

THE FOLLOWING ITEMS ARE USED IN THE MODEL 1030, 1046, 1047

IMPINGER OVEN (EXPORT)

AIR PRESSURE SWITCHES - REPLACEMENT AND ADJUSTMENT

Remove control panel top.

Disconnect wires from switch making note of wire number and location for reinstallation.

Remove air tube from switch assembly.

Remove switch from wire hanger.

Install new switch in reverse order, make sure air tube is not blocked miss-aligned.

Adjust as needed.

To adjust the air pressure switch, remove snap on cover on the side of the switch to

expose adjusting screw. To increase sensitivity, turn screw counter clockwise; to

decrease sensitivity, turn screw clockwise. Check for proper line voltage switching from

N.C. to N.O. as the air pressure switch closes.

GAS VALVE - REPLACEMENT AND ADJUSTMENTS

Remove control panel top and front cover.

Disconnect the gas piping from the back of the unit.

Remove the four (4) screws from the incoming nipple mounting bracket.

Remove incoming nipple.

Disconnect two (2) plugs, (1 ) 3 prong and (1 ) 4 prong - Note location.

Disconnect pipe union just above gas valve and remove assembly.

Reassemble in reverse order (check all pipe fittings for leaks). After assembled, check

for proper adjustment of gas pressure switch, 8.8 on dial for natural gas, 23 for L.P. Gas

and 4.5 for town gas.

Check and adjust manifold pressure. Remove pressure tap located in gas piping above

the gas valve prior to the burner orifice and install manometer . Adjustment screw is

located on the front of the valve, remove plastic cap and adjust as needed: 3.5" W.C. for

Natural Gas and 10" W.C. for L.P.

Check gas filter by removing cover plate (located on either side of valve). Remove four

(4) screws and slide filter out of valve housing and inspect. Reassemble in reverse

order and check for leaks around cover.

SIDE VIEW

TOP VIEW

OUTPUT

MANIFOLD

PRESSURE

ADJUSTMENT

PRESSURE

CONTROLLER

ADJUSTMENT

gnd

ELECTRICAL

CONNECTOR

FILTER

COVER

PLATE

FILTER

COVER

PLATE

ELECTRICAL

CONNECTOR

gnd

Impinger I -–1000 Series Service Manual - Domestic

IGNITION CONTROL - REPLACEMENT

Remove control panel top and front cover.

Loosen two (2) locking screws on front cover of relay (approx. 1/2 turn).

Remove front portion of relay by pulling straight out (rocking motion).

Remove wires from plug-in terminal strip, note wire numbers and locations.

Remove two (2) screws from mounting bracket and remove.

Reassemble in reverse order (NOTE: Plug in terminal strip is polarized and will only

allow relay to plug in one direction, make sure manual reset button lines up with access

hole in front cover.) Check system operation.

HIGH - LIMIT THERMOSTAT - REPLACEMENT

Remove control panel top and front cover.

Remove conveyor and fingers.

Remove capillary bulb from wire form in oven chamber and pull through tube into control box.

Remove two (2) wires from thermostat, note wire numbers and location for reinstallation.

Remove screws from bracket and remove thermostat.

Reassemble in reverse order making sure capillary tube is placed securely in the wire form.

NOTE: Depress reset button to insure thermostat is set for operation.

SPARK GENERATOR – REPLACEMENT

Remove control panel top and front cover.

Loosen two (2) locking screws (approx. 1/2 turn) on ignition control and remove front

portion of relay exposing terminal strip.

Remove two (2) wires for spark generator.

Unplug connector on bottom of spark generator.

Remove two (2) mounting screws and remove generator assembly.

Reassemble in reverse order and check system operation.

SOLENOID VALVE – REPLACEMENT

Remove control panel top and front cover.

Disconnect pipe union just above gas valve assembly.

Disconnect two (2) wires from solenoid, note wire number and location for reinstallation.

Remove four (4) nuts from main orifice burner bracket and remove assembly.

Replace valve and reassemble in reverse order.

After assembly, check all fittings for leaks and check system operation.

FLOW

BURNER ALARM - REPLACEMENT

Remove control panel top and front cover.

Remove two (2) wires from alarm, note wire numbers and location.

Remove retainer cover from alarm and remove assembly from mounting bracket.

Reassemble in reverse order and check.

Impinger I -–1000 Series Service Manual - Domestic

BURNER ALARM LIGHT - REPLACEMENT

Remove control panel top and front cover.

Remove two (2) wires from light assembly, note wire number and location.

Grasp body of light assembly and slide sideways to remove.

Reassemble in reverse order and check.

PILOT LIGHT (220V) - REPLACEMENT

Remove control panel top and front cover.

Remove switch access cover.

Remove two (2) wires from light assembly, note wire number and location.

Grasp body of light assembly and slide sideways to remove.

Reassemble in reverse order and check.

IGNITER SENSOR ASSEMBLY - REPLACEMENT

Remove control panel top and front cover.

Remove gas valve assembly (See Gas Valve)

Remove screws from burner tube and pull burner assembly out.

Remove wire connectors from igniter sensor assembly.

Remove screws from mounting bracket and remove assembly.

Reassemble in reverse order and check system operation.

NOTE: After installation, check all pipe fittings for leaks.

BURNER BLOWER MOTOR – REPLACEMENT

Remove control panel top and front cover.

Remove screws around blower tube.

Disconnect motor wiring and remove.

Reassemble in reverse order and check system operation.

TEMPERATURE CONTROL BOARD - REPLACEMENT- MODEL 1030

Remove control panel top and front cover.

Remove potentiometer leads (3), note color and location.

Remove thermocouple leads (2), note color and location (white:pos/red:neg.).

Remove power and solenoid leads (4), note wire number and location.

Remove screw and board assembly and replace.

Reassemble in reverse order and check system operation.

NOTE: When replacing #369174 with (new) #369728, turn temperature control to its

maximum position and allow oven 30 minute preheat then calibrate board as follows:

Place temperature probe between top fingers #2 and #3 (making sure probe is

not touching any metal) and adjust potentiometer P6 to a Maximum temperature

of 575°F.

RED

POTENTIOMETER

transformer marked with

2.5 K OHMS

green gold or silver dot

BLACK

P 6

P 5

L 1 120 VAC

L 2

WHITE

P 3

LOAD

THERMOCOUPLE

TYPE J

Impinger I -–1000 Series Service Manual - Domestic

TEMPERATURE CONTROL POTENTIOMETER - REPLACEMENT

Remove control panel top and front cover.

Remove one screw from control knob guard and move guard to one side.

Remove knob and locknut on control pot shaft and pushout.

Remove three (3) wires from temperature control board, note wire colors and location.

Install new control pot. in reverse order and check system operation.

NOTE: If temperature control knob is type with temperature numbers on it, adjust it to

agree with the time/temp. display for knobs with reference numbers only, #9 is

500°F/260°C.

RELAY ASSEMBLY, BURNER BLOWER MOTOR - REPLACEMENT

Remove control box top and front cover.

Remove cover from relay box.

Remove wire from ignition control (#20).

Remove two (2) wires from transformer (#21 and #23).

Remove wire from burner blower motor connector plug (requires pin extractor tool (#369600) (#73).

Remove nut and washer from rear of relay assembly and remove assembly.

Install new relay in reverse order and check system operation.

TEMPERATURE CONTROL - REPLACEMENT - 1046-1047

Remove control panel top and front cover.

Remove one screw from control knob guard and move guard to one side.

Remove temp. control knob and locknut.

Remove six (6) wires from temperature control board , note wire colors and location.

Install new temperature control board in reverse order and check system operation.

RELAY, GAS CONTROL - REPLACEMENT - MODEL 1046,1047

Shut off power at main breaker.

Remove control panel top and front cover.

Remove cover from relay box.

Disconnect all wires and mark for replacement.

Remove relay by removing two (2) mounting screw.

Reassemble in reverse order.

TIME DELAY RELAY, 20 MINUTE - REPLACEMENT

Remove control box top and front cover.

Disconnect all wires and mark for replacement.

Remove center mounting screw.

Reassemble in reverse order.

NOTE: Do not over tighten mounting screw as this may damage the internal

electronic components.

CONVEYOR BEARING REPLACEMENT AND SHAFT LUBRICATION – 1200 SERIES OVENS

Remove conveyor from oven.

Remove conveyor belt.

Remove idle & drive shaft assemblies

Disassemble and clean/replace parts as needed. Use Molykote G-N metal assembly paste for lubrication.

Impinger I -–1000 Series Service Manual - Domestic

THIS PAGE INTENTIONALLY LEFT BLANK.

Impinger I -–1000 Series Service Manual - Domestic

PARTS / MODEL SERIES 1000 & 1200 - GENERAL

LETTER

PART NO.

369003

369207

369337

369110

369209

369828

369157

1534

DESCRIPTION

Door Hinge

Handle Retainer

Retainer (See page 62)

Access Window (See page 62)

Latch & Strike

Handle Spacer

Complete Door

Finger Support Assy.

Support Bracket Pins

Strike Assy.

369057

369643

1009

Oven Top

369062

369046

369367

369140

369903

369141

369139

369058

369211

369369

369203

369749

369204

369373

369205

369651

369379

369052

369030

369328

369904

369218

369053

Top, Control Panel

Flue Assy. (Gas)

Flue Assy. (Electric)

Compression Spring

Flat Washer, 5/16”

Conveyor Hold Down Bracket

Shoulder Screw

Baffle, Inlet and Outlet

Thumb Screw

Seam Cover, Conveyor Opening

Stud Wing Head

Chain Cover Assy. ( S/N Q14974 & Above)

Split Ring Retainer

Receptacle, Snap In

Chain Guard Cover – S/N 2164 to Q14973

Top, Chain Guard – S/N 2164 to Q14973

Bottom Chain Guard – S/N 2164 to Q14973

Adjustable Leg

Caster – 6”

Leg, Stand

Insulation Holder

Internal Crumb Pan

Finger Housing

Columnating Plates (See Installation Manual)

Finger Cover

369055

369748

369690

370048

369673

369244

369887

369886

Bracket, Chain Cover – S/N Q14974 & Above

Label, Time/Temp Display Cover

Instrument Cover

Thermostat Guard

Instrument Cover Assy.

Instrument Cover Label

Window Fº

Window Cº

Display Bezel

369199

369246

Impinger I -–1000 Series Service Manual - Domestic

BLOW UP / 1000, 1200 – GENERAL

Impinger I -–1000 Series Service Manual - Domestic

PARTS / ACCESS DOOR & 1050 DOOR

LETTER

PART NO.

DESCRIPTION

369110

369310

369377

369308

369111

369334

350638

369311

369309

369336

369906

369230

369112

350257

369229

369337

369207

369004

369031

369015

369049

369051

369050

369003

369926

369925

369927

369930

369931

369929

Complete Access Window Assy.

Screw, 6-32 x 3/16”

Screw, 8-32 x 3/8”

Bottom, Access Window Assy.

Glass, Old Style 4 9/32” X 20”

Glass, New Style 4” x 20”

Handle

Handle Spacer (2 required)

Top, Access Window Assy.

Door Latch

Screw, 8-32 x 5/8”

Screw, 8-32 x ¾”

Ball Catch

Screw, 6-32 x 3/8”

Adapter Plate

Retainer, New Style

Retainer, Old Style

Door Latch & Catch

Complete Door Assy.

Door Gasket

Vertical Retaining Plate

Retaining Plate Screw

Horizontal Retaining Plate

Door Hinge

Window Frame, Bottom

Glass, Access Window

Window Frame, Top

Screw, 10-32 x ¼”

Screw, 8-32 x 3/8”

Impinger I -–1000 Series Service Manual - Domestic

BLOW UP / ACCESS DOOR & 1050 DOOR

Impinger I -–1000 Series Service Manual - Domestic

PARTS / MODEL 1000,1001,1050,1051,1004, &1005 – S/N 100 TO 4389

LETTER

PART NO.

369012

369013

369014

369066

369260

350225

369104

369025

369022

369113

369114

369115

369032

369008

369079

369080

369007

369902

N. L. A

369531

369366

369009

369029

369108

369263

369393

369344

369006

369072

369099

369144

369202

369075

369073

369100

369076

369142

369067

369063

369064

DESCRIPTION

Fuseholder

Fuse, 3 Amp

Fuse, 10 Amp

Sprocket, Drive - Prior to S/N 4390

Switch, ON/OFF

Lens, Red

Pilot Light, 24 VAC

Blower Air Switch

Conveyor Motor - Prior to S/N 4390

Brush

Brush Cap

Brush Spring

Relay

D. C. Conveyor Controller - S/N 4389 & Below

Relay Cover

Reverse Switch w/Harness - Prior to S/N 4390

Temperature Sensing Switch

Sensing Rod Switch

See Burner Blower Motor - Page 34

Transformer, 120/24V- 40VA

Burner Blower Motor Kit

Thermocouple

Temperature Gauge

Thermostat Knob (Degree F)

Gas Valve (Body Only), NAT/LP

Ignition Control, NAT & LP

Pilot Shut Off Valve

Temperature Control Valve

Main Burner Orifice, Natural Gas

Main Burner Orifice, LP

Pilot Shield, Extension

Pilot Shield, Main

Flame Sensor

Pilot Orifice, Natural Gas

Pilot Orifice, LP

Burner Ignitor

Flame Target

Air Switch Tube

Conveyor Speed Controller - Prior to S/N 4390

Conveyor Speed Control Dial

A A

B B

C C

D D

E E

F F

Impinger I -–1000 Series Service Manual - Domestic

BLOW UP / 1000, 1001, 1050, 1051, 1004, & 1005 S/N 100 TO 4389

Impinger I -–1000 Series Service Manual - Domestic

PARTS / MODEL 1000,1001,1004, AND 1005 S/N 4390 & ABOVE

LETTER

P/N

DESCRIPTION

369247

369248

369064

369012

369013

369014

369158

350705

369260

350225

369104

369507

Shaft Lock Ring

Knob

Conveyor Speed Control Dial (Non-Digital Display Ovens)

Fuseholder

Fuse, 3 Amp

Fuse, 10 Amp

10 Tooth Sprocket - S/N 4390 & Above

Switch ON/OFF

Double Pole Fan Switch

Lens, Red

Pilot Light, 24 VAC

Cooling Fan Thermostat

SEE PAGE 82

Blower Air Switch

369025

369032

369155

357028

369201

369240

369173

369363

369154

369007

369902

N. L. A.

369531

369366

369331

369167

369172

369029

369009

369108

369263

369393

369344

369086

369006

369072

369099

369144

369202

369075

369073

369100

369076

369142

369124

369152

369193

Relay

Conveyor Motor Control Board

Fuse, Non Delay, 1A 250V

Fuse, 4 Amp, 250V

Hi Hat

Control Transformer

Unit Relay Cover Top LH

0.7 Amp Circuit Breaker

Temperature Sensing Switch

Sensing Rod Kit

See Burner Blower Motor - Page 34

Transformer 120/24V - 40VA

Burner Blower Motor Kit

Finger Guard, Cooling Fan

Set Switch Assy.

Digital Display

Temperature Gauge (Not Shown)

Thermocouple (Not Shown) used with Temperature Gauge

Thermostat Knob (Degree F)

Gas Valve (Body Only) NAT/LP

Ignition Control NAT & LP

Pilot Shut Off Valve

Pilot Line Assy - S/N 121 & Above

Temperature Control Valve

Main Burner Orifice Natural Gas

Main Burner Orifice LP

Pilot Shield Extension

Pilot Shield Main

Flame Sensor

Pilot Orifice Natural Gas

Pilot Orifice LP

Burner Igniter

Flame Target

B B

C C

D D

E E

F F

G G

H H

I I

K K

L L

N N

Cooling Fan Control Box

Oven Conveyor Control Pot.

Thermistor Probe

Impinger I -–1000 Series Service Manual - Domestic

BLOW UP 1000, 1001, 1004, 1005 S/N 4390 & ABOVE

Impinger I -–1000 Series Service Manual - Domestic

PARTS / 1022-1023

LETTER

P/N

DESCRIPTION

369247

369012

369129

369013

369130

369064

369248

369260

369066

369158

369605

350225

369128

369022

Shaft Lock Ring

Fuseholder

Fuseholder, Main Fan

Fuse, 3 Amp

Fuse, 15A

Conveyor Speed Control Dial-Non Digital Display Units

Knob

Switch, ON/OFF

Sprocket, Drive - Prior to S/N 4390 & S/N Q19078 and above

10 Tooth Sprocket - S/N 4390 to S/N Q19077

Transformer (Stepper)

Lens, Red

Neon Pilot Light, 125 VAC

Motor, Conveyor - S/N 4389 & Below

SEE PAGE 82 S/N 4390 & Above

Brush (For 369022)

369113

369114

369115

369120

369127

357067

353014

369118

369007

369902

369154

369640

357028

369201

369240

369167

370046

369172

369029

369342

369193

369340

369132

369173

369131

369032

369124

369535

369025

369067

369063

369153

369391

369080

Brush Cap (For 369022)

Brush Spring (For 369022)

Contactor, 60A

Hi Limit Thermostat

Thermostat, Capillary

Supply Terminal (Ground)

Power Terminal Block

Temperature Sensing Switch

Sensing Rod Kit

0.7 Amp Circuit Breaker

Control (Stepper) S/N Q19078 & Above

Fuse, Non Delay, 1 A 250V

Fuse, 4 Amp, 250V

Hi Hat

Set Switch Assy.

Button Only

Digital Display

Temperature Gauge (S/N Q5276 & Down) Uses 369009 T-Couple

Knob, Temperature Control

Thermistor Probe

Potentiometer, Temp. Control & Harness

Temperature Control Board

Control Transformer

Thermocouple Probe Assy.

Relay

Cooling Fan, Control Box

Cord Set, Cooling Fan

Blower Air Switch

Air Switch Tube

Conveyor Speed Controller S/N 4389 & Below

Electric Conveyor Control Pot. S/N 4390 to Q19077

Speed Pot. (Stepper) S/N Q19078 & Above

Reversing Switch – S/N 4389 & Below

A A

B B

C C

D D

Not Shown

Impinger I -–1000 Series Service Manual - Domestic

BLOW UP / 1022, 1023

Impinger I -–1000 Series Service Manual - Domestic

PARTS / 1040-1041

LETTER

P/N

DESCRIPTION

369247

369012

369013

369014

369248

369158

369066

369260

369605

350225

369104

Shaft Lock Ring

Fuseholder

Fuse, 3 Amp

Fuse, 10 Amp

Knob

10 Tooth Sprocket - S/N 4390 to Q14973

Sprocket - S/N 14974 & Above

Switch, ON/OFF

Transformer (Stepper)

Red Lens

Pilot Light 24 VAC

SEE PAGE 82

Cooling Fan Thermostat

Blower Air Switch

369507

369025

369032

369155

369640

357028

369201

369240

3691730

369363

369131

369270

N. L. A.

369531

369366

369331

369193

369167

370046

369172

369316

369263

369393

369344

369317

369398

369072

369099

369144

369202

369075

369073

369100

369076

369142

369007

369902

369154

369124

369067

369152

369391

369316

369801

370058

Relay

Conveyor Motor Control Board - S/N 4390 - Q14973

Control Stepper- S/N Q14974 & Above

Fuse, Non Delay, 1 A 250V

Fuse, 4 Amp, 250V

Hi Hat

Control Transformer

Unit Relay Cover, Top LH

Thermocouple Probe Assy

Electronic Temperature Control Q18037 & Below

See Burner Blower Motor - Page 34

Transformer, 120/24V - 40VA

Burner Blower Motor Kit

Finger Guard, Cooling Fan

Thermistor Probe

Set Switch Assy.

Button Only

Digital Display

B B

Knob, Temperature Adjustment

Gas Valve (Body Only), NAT/LP

Ignition Control, NAT & LP

Pilot Shut Off Valve

Potentiometer, Temperature Adjustment w/Faceplate

Solenoid Valve, NAT & LP

Main Burner Orifice, Natural Gas

Main Burner Orifice, LP

Pilot Shield, Extension

Pilot Shield, Main

Flame Sensor

Pilot Orifice, Natural Gas

Pilot Orifice, LP

Burner Ignitor

Flame Target

Temperature Sensing Switch

Sensing Rod Kit

0.7 Amp Circuit Breaker

Cooling Fan, Control Box

Air Switch Tube

Potentiometer, conveyor S/N 4390 - Q14973

Potentiometer, conveyor S/N Q14974 & Above

Knob, temperature control

Thermostat

C C

D D

E E

F F

G G

H H

I I

K K

L L

N N

O O

P P

Jumper, thermocouple

Impinger I -–1000 Series Service Manual - Domestic

BLOW UP / 1040, 1041

Impinger I -–1000 Series Service Manual - Domestic

PARTS / 1200, 1201, 1204 AND 1205

LETTER

P/N

DESCRIPTION

369012

369014

369252

369248

369247

369260

350225

369507

369104

369193

369025

369032

369007

369902

369173

369363

N. L. A

369531

369366

369331

369167

370046

369172

369108

369263

369393

369344

369006

369086

369072

369099

369144

369202

369075

369073

369100

369076

369142

369124

369067

369253

369254

Fuseholder

Fuse, 10 Amp

Paddle Switch

Knob

Shaft Lock Ring

Switch, ON/OFF

Lens, Red

Cooling Fan Thermostat

Pilot Light, 24 VAC

Thermistor Probe

Blower Air Switch

Relay

Temperature Sensing Switch

Sensing Rod Kit

Control Transformer

Unit Relay Cover, Top LH

See Burner Blower Motor - Page 34

Transformer, 120/24V - 40VA

Burner Blower Motor Kit

Finger Guard, Cooling Fan

Set Switch Assy.

Button Only

Digital Display

Thermostat Knob (Degree F)

Gas Valve (Body Only), NAT/LP

Ignition Control, NAT & LP

Pilot Shut Off Valve

Temperature Control Valve

Pilot Line Assy - S/N 121 & Above

Main Burner Orifice, Natural Gas

Main Burner Orifice, LP

Pilot Shield, Extension

Pilot Shield, Main

Flame Sensor

Pilot Orifice, Natural Gas

Pilot Orifice, LP

Burner Ignitor

Flame Target

A A

C C

D D

E E

F F

G G

H H

Cooling Fan, Control Box

Air Switch Tube

Speed Pot., "A"

Speed Pot., "B"

Impinger I -–1000 Series Service Manual - Domestic

BLOW UP / 1200, 1201, 1204, 1205

Impinger I -–1000 Series Service Manual - Domestic

PARTS / 1202-1203

LETTER

P/N

DESCRIPTION

369247

369129

369012

369013

369130

369248

369252

369260

350225

369128

369025

369120

369127

353014

369118

369007

369902

369119

369134

369193

369167

370046

369172

369342

369340

369132

369173

369032

369131

369124

369067

369253

369254

Shaft Lock Ring

Fuseholder, 15A

Fuseholder

Fuse, 3 Amp

Fuse, 15A

Knob

Paddle Switch

Switch, ON/OFF

Lens, Red

Neon Pilot Light, 125 VAC

Blower Air Switch

Contactor, 60A

Hi Limit Thermostat

Supply Terminal (Ground)

Power-Terminal Block

Temperature Sensing Switch

Sensing Rod Kit

60A Fuseholder

Fuse, 50A

Thermistor Probe

Set Switch Assy

Button Only

Digital Display

Knob, Temperature Control

Potentiometer, Temp. Control Harness

Temperature Control Board

Control Transformer

Relay

Thermocouple Probe Assy.

Cooling Fan, Control Box

Air Switch Tube

A A

B B

C C

D D

Speed Pot., "A" S/N 14974 & Below

Speed Pot., "B" S/N 14974 & Above

Impinger I -–1000 Series Service Manual - Domestic

BLOW UP / 1202, 1203

Impinger I -–1000 Series Service Manual - Domestic

PARTS / 1240-1241

LETTER

P/N

DESCRIPTION

369012

369014

369248

369247

369260

350225

369507

369104

369025

369032

369363

369131

369270

N. L. A.

369531

369366

369331

369193

369167

370046

369172

369316

369263

369393

369344

369317

369398

369086

369072

369099

369144

369202

369075

369073

369100

369076

369142

369007

369902

369252

369124

369067

369253

369254

369652

369316

369801

370058

Fuseholder

Fuse, 10 Amp

Knob

Shaft Lock Ring

Switch, ON/OFF

Lens, Red

Cooling Fan Thermostat

Pilot Light, 24 VAC

Blower Air Switch

Relay

Unit Relay Cover, Top LH

Thermocouple Probe Assy

Electronic Temperature Control

See Burner Blower Motor - Page 34

Transformer, 120/24V - 40VA

Burner Blower Motor Kit

Finger Guard, Cooling Fan

Thermistor Probe

Set Switch Assy.

Button Only

Digital Display

Knob, Temperature Adjustment

Gas Valve (Body Only), NAT/LP

Ignition Control, NAT & LP

Pilot Shut Off Valve

Potentiometer, Temperature Adjustment w/Faceplate

Solenoid Valve, NAT & LP

Pilot Line Assy - S/N 121 & Above

Main Burner Orifice, Natural Gas

Main Burner Orifice, LP

Pilot Shield, Extension

Pilot Shield, Main

Flame Sensor

Pilot Orifice, Natural Gas

Pilot Orifice, LP

Burner Ignitor

Flame Target

Temperature Sensing Switch

Sensing Rod Kit

Paddle Switch

Cooling Fan, Control Box

Air Switch Tube

Speed Pot., "A" S/N 4390 - Q14790

Speed Pot., "B" S/N 4390 - Q14790

Speed Pot., (Stepper) S/N Q14791 & Above

Knob

B B

C C

D D

E E

F F

G G

H H

I I

K K

L L

N N

O O

P P

Thermostat

Thermocouple Jumper

Impinger I -–1000 Series Service Manual - Domestic

BLOW UP / 1240, 1241

Impinger I -–1000 Series Service Manual - Domestic

PARTS / OVEN BACK - GAS

LETTER

P/N

DESCRIPTION

369048

369212

369214

369192

369045

369306

369646

369647

369213

Motor and Fan Cover

Motor, S/N begins with a"Q"

Motor, 50 Hz, 240V

Capacitor 7.5 MFD, 370 VAC

Oven Back- S/N 4612 & Below

Oven Back Assy. - S/N 4613 & Above

Rod, Stand Off

Inlet Panel, 16"

Fan, S/N begins with a "Q"

See Page 86

See Conversion Kits Below

Heat Slinger Bar

Motor Support Assy - S/N Q4613 & Above

Motor Mount Support Assy. - S/N 4612 & Below

Oven Fan Motor- S/N 4612 & Below

Motor Cooling Fan

Wire Form, Thermostat Bulb

Wire Form, Thermostat Bulb -1040 Series

Cone Conversion Kit 60 HZ

Replaces N.L.A. Fan Assy. with New Style Oven Back Assy.

Cone Conversion Kit 50 HZ

Replaces N.L.A. Fan Assy. with New Style Oven back Assy.

N.L.A.

369026

369215

369028

369020

369027

369545

369547

369318

Not Shown

369321

Impinger I -–1000 Series Service Manual - Domestic

BLOW UP / OVEN BACK – GAS

Impinger I -–1000 Series Service Manual - Domestic

PARTS / OVEN BACK- ELECTRIC

LETTER

P/N

DESCRIPTION

369699

369212

369214

369192

369307

369122

369287

369315

369647

369213

Rear Cover Assy.

Motor, S/N begins with a "Q"

Motor, 50 Hz, 240V

Capacitor 7.5 MFD, 370 VAC

Oven Back Assy. - S/N 4768 & Above

240V Heating Element

208V Heating Element

220V Heating Element

Inlet Panel, 16"

Fan, S/N begins with a "Q"

See Detail Page 86

See Conversion Kits Below

N.L.A

369646

369026

369215

369028

369020

369027

369547

369319

Rod, Stand Off

Heat Slinger Bar

Motor Support Assy - S/N Q4768 & Above

Motor Mount Support Assy. - S/N Q4767 & Below

Oven Fan Motor- S/N Q4767 & Below

Motor Cooling Fan

Wire Form, Thermostat Bulb- Electric Ovens

Cone Conversion Kit 208V 60 HZ

Replaces N.L.A. Fan Assy. with New Style Oven Back Assy

Cone Conversion Kit 240V 60 HZ

Replaces N.L.A. Fan Assy. with New Style Oven Back Assy.

Cone Conversion Kit 220V 50 HZ

Replaces N.L.A. Fan Assy. with New Style Oven Back Assy.

Cone Conversion Kit 240V 50 HZ

Replaces N.L.A. Fan Assy. with New Style Oven Back Assy.

Not Shown

369320

369322

369323

Impinger I -–1000 Series Service Manual - Domestic

BLOW UP / OVEN BACK – ELECTRIC

Impinger I -–1000 Series Service Manual - Domestic

PARTS / CONVEYOR MOTOR ASSEMBLY S/N 4390 & ABOVE

LETTER

P/N

DESCRIPTION

369291

369384

369294

369296

369290

369151

369146

369294

369292

369297

369156

369293

369150

369298

369299

350247

369295

369603

369737

369900

369658

369736

Motor, DC - Conveyor

Motor Brush Assy.

#4 Lockwasher

Screw, 4-40 x 1/4

Optical Encoder Assy.

Coupling and Encoder Disc (.050 in. Allen Wrench included)

Hex Nut, 4-40

#4 Lockwasher

Bracket, Tach. Generator

Screw, 6-32 x 1/4

#6 Lockwasher

Screw, 4-40 x 3/8

Tach. Generator

Dust Cover

Bushing

Screw, 10-32 x 3/8

#10 Lockwasher

Stepper Motor Gearbox Assy. - includes R, S, T, U

Hall Effect Sensor

#8 Lockwasher

Screw, 8-32 x 1/4

Magnet

Impinger I -–1000 Series Service Manual - Domestic

BLOW UP / CONVEYOR MOTOR ASSEMBLY S/N 4390 & ABOVE

Impinger I -–1000 Series Service Manual - Domestic

PARTS / SERIES 1000 – CONVEYOR

LETTER

P/N

DESCRIPTION

369002

369314

369835

369312

369160

369641

369220

369005

369237

369161

Tension Knob, Conveyor

Roll, Conveyor-Notched

Conveyor Frame Assy.

Conveyor Shaft, Idler

Conveyor Pan Stop

Idle Bearing Bracket

Idle Bearing

Conveyor Belt Connecting Link

Conveyor Drive Shaft

Roller Chain Sprocket, S/N 2164-Q14973 (Gas)

S/N 2164-Q19077 (Electric)

Drive Sprocket S/N Q14974 & Above (Gas)

S/N Q19078 & above (Electric)

Drive Key

Rod End, Female

Screw 1/2-20 x 3/4

Crumb Pan

Conveyor Belt

369066

369413

369219

369644

369206

369163

369362

369143

369036

N.L.A.

Conveyor Belt by Foot

Crumb Pan

Drive Bearing Assy.

Conveyor Frame

(Replace with 369117 Complete Conveyor Assy.)

Conveyor Guard Strap

L.H. Conveyor Guard Assy.

Snap Ring

L.H. Conveyor Idler Bearing Assy.

R.H. Conveyor Idler Bearing Assy.

Idler Shaft

Blank Drive Gear

Notched Drive Gear

Drive Shaft

R.H. Conveyor Guard Assy.

Conveyor Sprocket (Uses 369042 Key

A A

B B

369380

369060

369037

369034

369035

369042

369039

369038

369043

369059

369040

Impinger I -–1000 Series Service Manual - Domestic

BLOW UP / SERIES 1000 CONVEYOR

Impinger I -–1000 Series Service Manual - Domestic

PARTS / SERIES 1200 - CONVEYOR CONTROL

LETTER

P/N

DESCRIPTION

SEE PAGE 82

Fuseholder

Fuse, 3 Amp

Hi Hat

Conveyor Motor Control, "A" S/N Q4613 to Q14973

Conveyor Control (Stepper) S/N Q14974 & Above

Fuse, Non Delay, 1A 250V

Fuse, 4 Amp, 250V

Conveyor Motor Control "B" S/N Q4613 to Q14973

Fuse, Non Delay, 1A 250V

Fuse, 4 Amp, 250V

369012

369013

369240

369155

369640

357028

369201

369272

357028

369201

369154

N. L.A.

369665

369289

369242

369696

369124

369605

0.7 Amp Circuit Breaker

Chain Guard

Sprocket, 5/8" - S/N Q14791 & Below

Sprocket, 1/2" (Stepper) S/N Q14791 & Above

Clip, Chain Guard

Cooling Fan, Control Box

Transformer (Stepper)

Impinger I -–1000 Series Service Manual - Domestic

BLOW UP / SERIES 1200 – CONVEYOR CONTROL

Impinger I -–1000 Series Service Manual - Domestic

PARTS / SERIES 1200 – CONVEYOR

LETTER

P/N

DESCRIPTION

369277

369275

369276

369274

369279

369278

369241

369242

369005

369280

369284

369039

369038

369281

369160

350238

369697

369282

369206

369273

369249

369250

369817

369818

Retaining Block, Inner

Flanged Bearing, .50 ID

Inner Drive Shaft

Flanged Bearing, .75 ID

Retaining Block, Outer

Outer Drive Shaft

Sprocket 3/4" Bore

Sprocket 1/2" Bore

Conveyor Belt Connecting Links

Idler Shaft, Inner

Collar Shaft Spacer

Blank Drive Gear

Roll, Conveyor, Notched

Idler Shaft, Outer

Conveyor Pan Stop

Nut, 10-24

Lockwasher, SS #10

Compression Spring

Crumb Pan

Complete Conveyor Belt

Drive Chain, Long

Not Shown

Drive Chain, Short

Drive Chain, Long (Stepper Drive)

Drive Chain, Short(Stepper Drive)

Impinger I -–1000 Series Service Manual - Domestic

BLOW UP / SERIES 1200 – CONVEYOR

Impinger I -–1000 Series Service Manual - Domestic

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Impinger I -–1000 Series Service Manual - Domestic

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Impinger I -–1000 Series Service Manual - Domestic

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