Lincoln 1621 000 EA User Manual

SERVICE MANUAL  
(INTERNATIONAL)  
IMPINGER CONVEYOR OVENS  
MODEL 1621-000-EA, 1628-000-A, 1629-000-A  
WITH PUSH BUTTON CONTROLS  
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  
1600AdDgElecExp  
REV: 1/8/07  
SCHEMATIC  
MODEL 1621-000-EA, 1628-000-A, 1629-000-A  
Low Profile – 1600 Series Adv Dig Electric S.M. – Int’l  
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TROUBLESHOOTING GUIDE  
MODEL 1621-000 EA  
MODEL 1628-000 A  
MODEL 1629-000 A  
230/400 VAC 50 HZ 3 PHASE  
220/380 VAC 50 HZ 3 PHASE  
240/415 VAC 50 HZ 3 PHASE  
NOTE: When checking components on left side of unit, be sure to check for proper connections in power  
connector, (marked P. C. on schematic diagram) located inside motor cover.  
SYMPTOM  
Oven fan will not  
run  
POSSIBLE CAUSE  
Incoming power supply  
EVALUATION  
Check breakers/ reset if required call Power company  
if needed.  
Check, replace if necessary.  
Check, replace if necessary.  
Fuse, 10 A., main fan  
Fuse holder  
Filter, Power  
Check for supply voltage to filter. If there is no voltage,  
trace wiring back to fuse holder. If there is power in to  
the filter, but no power out, replace the filter.  
Check continuity between switch terminals.  
Check for supply voltage to terminal #1 and #3, if  
there is no voltage, trace wiring back to the power  
filter. If voltage is present, check for supply voltage at  
terminals #3 to #6, if no voltage is present, trace  
wiring back to on/off switch. If there is voltage at #3  
and #6, check for voltage at terminals #1 and #2, of  
there is no voltage at Terminals #1 and #2, replace  
the 20 minute time delay relay.  
Oven fan switch  
20 minute time delay relay  
Relay, main fan motors  
Check for power to coil of motor relay. If no voltage is  
present, trace wiring back to 20 minute time delay  
relay. Check for supply voltage to the contact of the  
relay. If no voltage is present, trace wiring back to  
power filter. If voltage is present, at the relay coil,  
check to insure the contacts are closing. Replace  
relay as needed.  
Hi-limit thermostat(s), control  
box  
Terminals are normally closed, if open, reset  
thermostat and test oven for proper operation. If it will  
not reset, replace thermostat.  
Capacitor(s)  
Motor(s), main fan  
20 minute time delay relay  
Check for opens, shorts, or grounds.  
Check for opens, shorts, or grounds.  
Check for supply voltage at terminals #1 and #2 while  
is “ON”. Turn “OFF” the main fan switch, supply  
voltage should continue to be present for 20 minutes.  
If voltage is not present for 20 minutes, replace 20  
minute time delay relay.  
No main fan cool  
down  
No control box  
cooling  
Fan switch  
Hi-limit thermostat(s)  
(SEE OVEN FAN WILL NOT RUN.)  
Terminals are normally closed, if open, reset  
thermostat and test oven for proper operation. If it will  
not reset, replace thermostat.  
Relay, main fan motors  
Check for power to coil of oven fan relay. If no voltage  
is present, trace wiring back to hi-limit thermostat.  
Check for supply voltage to the contact of the relay. If  
no voltage is present, trace wiring back to fuse holder.  
If voltage is present, at the relay coil, check to insure  
the contacts are closing. Replace relay as needed.  
Supply voltage should now be at these motors. If  
voltage is present, check motor for open, shorts, or  
grounds. WITH POWER OFF: check for locked rotor.  
Check circuit breakers, reset if needed. Call power  
company if needed.  
Cooling fan(s)  
No automatic  
control box cooling  
Incoming power supply  
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Low Profile – 1600 Series Adv Dig Electric S.M. – Int’l  
Cooling fan thermostat(s)  
Check the cooling fan thermostat. (Thermostat closes  
at 49°C and opens at 38°C). With the cooling fan  
thermostat preheated, check for continuity. If switch is  
open, replace.  
Fuse, 3 A., cooling fan  
Fuse holder  
Cooling fan(s)  
Check, replace if necessary.  
Check, replace if necessary.  
Supply voltage should now be at these motors. If  
voltage is present, check motor for opens, shorts or  
grounds. WITH POWER OFF: Check for locked rotor.  
Check to see that the fan switch is on.  
Check if main oven fan is operating. If not, refer to  
“Oven fan will not run”.  
Oven will not heat  
Fan switch  
Main oven fan  
NOTE: These ovens utilize 2 complete /Temperature control systems. Each system will Follow the same  
troubleshooting sequence.  
Oven control relay  
Check for line voltage to the relay coil. If no voltage is  
present, trace wiring back to the control box hi-limit  
thermostat(s). If voltage is present, check to insure  
contacts are closing. Replace relay as needed.  
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 maximum temperature dial setting, check  
for proper location of capillary bulb in its spring holder  
If above checks OK, replace hi-limit.  
Thermostat, oven cavity hi-limit  
Contactor, hi-limit  
Check for line voltage to the contactor coil. If no  
voltage is present, trace wiring back to the oven cavity  
hi-limit thermostat(s). If voltage is present, check to  
insure contacts are closing. Replace contactor as  
needed.  
Fuse, heater, 50A.  
Fuseholder  
Control transformer  
Check, replace if necessary.  
Check, replace if necessary.  
Check for supply voltage to the primary of the control  
transformer. If no voltage is present, trace wiring back  
to the oven control relay. If primary voltage is present,  
check for 24VAC at the transformer secondary. If  
there is primary voltage, but no secondary voltage,  
replace control transformer.  
Oven control  
Check for 24VAC supply to control. If no voltage is  
present, trace wiring back to control transformer. If  
24VAC is present, check for a read-out on the control  
display. If there is 24VAC supplied, but there is no  
read-out on the control display, replace the oven  
control.  
If there is a read-out on the control, set the control to  
maximum temperature (see installation operations  
manual for temperature adjustment). With the control  
set at maximum temperature, check for line voltage at  
the heat relay (mercury contactor). If there is voltage  
at the heat relay, proceed to “Heat relay” for next  
check. If there is no voltage at the heat relay, trace  
wiring back to the oven control. If there is no voltage  
output at the oven control, check the read-out on the  
control. If the control reads “LP FAIL” or “RP FAIL”,  
this indicates that the thermocouple has failed or has  
become disconnected from the control. “LP FAIL”  
indicates a problem with the left thermocouple probe,  
and “RP FAIL” indicates a problem with the right  
thermocouple probe.  
Low Profile – 1600 Series Adv Dig Electric S.M. – Int’l  
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Thermocouple probe  
Check to be sure that the thermocouple is securely  
connected to the oven control. If the thermocouple is  
connected to the oven control, and the control  
indicates “LP FAIL” or “RP FAIL”, disconnect the  
thermocouple from the oven control and measure the  
resistance of the thermocouple. The left thermocouple  
should read approx. 21. The right thermocouple  
should read approx. 11. If these readings are not  
achieved, replace the thermocouple. If these readings  
are correct, proceed.  
Oven control  
If the thermocouple checks good, but the oven control  
display indicates that there is a thermocouple failure,  
replace the oven control. If the oven control indicates  
a temperature reading but the oven will not heat,  
proceed.  
Thermocouple  
WITH POWER ON AND THERMOCOUPLE  
ATTACHED TO THE OVEN CONTROL: Measure the  
DC millivolt output of the thermocouple. Refer to the  
thermocouple chart (located in the “Removal” section  
of the manual) for proper millivolt readings. If these  
readings are not achieved, replace thermocouple.  
If the thermocouple checks good, but there is no  
voltage output to the temperature regulation valve,  
replace the oven control. If there is voltage output to  
the heat relay, proceed.  
Oven control  
Oven air pressure switch  
Check for supply voltage at the air pressure switch, if  
no voltage is present, trace wiring back to the oven  
control. Check for supply voltage on both sides of  
switch. If voltage is present on one side only, check  
for air tube blockage. Adjust air pressure switch. If the  
above fails, replace air pressure switch.  
Heat relay  
Check for line voltage supplied to the coil of the heat  
relay. If no voltage is present, trace wiring back to the  
air pressure switch. If voltage is present, check to be  
certain that all of the contacts are closing when the  
relay is energized.. Also check for opens or shorts in  
the operating coil. Replace temperature regulation  
valve as needed.  
Heating elements  
Check the Amp draw on each power lead for proper  
load. Check the specification plate for proper rating  
information.  
If the Amp draw is high or low, check the individual  
heating elements for opens, shorts and proper  
resistance.  
To check the resistance of the elements,  
TURN OFF THE POWER!  
Remove all wiring from the heating elements and use  
an accurate digital meter.  
The element resistance should be as follows:  
220V – 29 ohms approx.  
230V – 32 ohms approx.  
240V – 34 ohms approx.  
If all readings are not correct, replace heating  
elements as needed.  
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Low Profile – 1600 Series Adv Dig Electric S.M. – Int’l  
Intermittent heating Thermal overload of main  
fan motor(s)  
The main fan motors are equipped with internal  
thermal protection and will cease to operate if  
overheating occurs. As the motors overheat and then  
cool, this will cause the units to cycle on and off  
intermittently. Improper ventilation or lack of  
preventive maintenance may cause this problem.  
Also, most of the problems listed under “Oven will not  
heat” can cause intermittent failure.  
Conveyor will not  
run  
Power supply  
Power switch  
Check for supply voltage at terminals L1 and L2. If  
voltage is not present check breakers.  
Check continuity between switch terminals. Replace  
switch as needed.  
Fuse, 10 Amp.  
Fuse holder  
Hi-limit thermostat(s),  
control box  
Check and/or replace.  
Check and/or replace.  
Check for voltage on both sides of the switch.  
Terminals are normally closed. If open, reset and test  
for proper operation. If thermostat will not hold, and  
the control box temperature is not exceeding 140°F  
(60°C), replace thermostat.  
Relay, oven control  
Control transformer  
Check for line voltage to the relay coil. If voltage is not  
present, trace wiring back to the hi-limit thermostat. If  
voltage is present, check to insure contacts are  
closing. Replace relay as needed.  
Check for line voltage supply to the primary of the  
control transformer. If no voltage is present, trace  
wiring back to the oven power relay. If voltage is  
present, check for 24VAC at the transformer  
secondary. If there is primary voltage, but no  
secondary voltage, replace control transformer.  
Check for line voltage supply to the conveyor motor at  
wire #28 to neutral. If no voltage is present, trace  
wiring back to the oven power relay. If voltage is  
present and the motor will not run, check the motor  
windings for opens or shorts.  
Conveyor motor  
WITH POWER OFF: Check the motor windings as  
follows:  
Grey to black - 116 ohms  
Grey to brown - 116 ohms  
Brown to black - 230 ohms  
Check for shorts or grounds. Replace capacitor as  
needed.  
Capacitor, conveyor motor  
WARNING: Capacitor has a stored charge, discharge  
before testing.  
Check continuity between switch terminals, Replace  
switch as needed.  
If there is supply voltage to the motor. And the motor,  
capacitor, and reversing switch check good, replace  
the oven control.  
Switch, conveyor reversing  
Oven control  
Conveyor motor  
runs, but there is  
no speed display  
NOTE: Display will indicate  
“Belt jam”  
Oven control  
Check for output voltage from the oven control to hall  
effect sensor (sensor is located in conveyor motor).  
Measure voltage at the motor connector, red wire and  
yellow wire. Voltage should be approx. 10VDC. If no  
voltage is present, trace wiring back to oven control. If  
there is no voltage present at the oven control,  
replace the oven control.  
Low Profile – 1600 Series Adv Dig Electric S.M. – Int’l  
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Conveyor motor  
Oven control  
If there is voltage supplied to the hall effect sensor,  
check for a frequency output from the hall effect  
sensor. Measure frequency across the yellow and  
white wires at the motor connector. Frequency  
readings should be approx. 20 – 525 Hz. If these  
readings are not achieved, replace the conveyor  
motor. If the readings are achieved, proceed.  
If the hall effect sensor readings are correct, but there  
is no speed indicated on the display, replace the oven  
control.  
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Low Profile – 1600 Series Adv Dig Electric S.M. – Int’l  
REMOVAL, INSTALLATION & ADJUSTMENTS  
MODEL SERIES 1621-000-EA, 1628-000-A, 1629-000-A  
CAUTION!  
BEFORE REMOVING OR INSTALLING ANY COMPONENT IN THE  
IMPINGER OVEN BE SURE TO DISCONNECT ELECTRICAL POWER AND GAS SUPPLY.  
AIR PRESSURE SWITCH – REPLACEMENT  
A. Remove control panel top.  
B. Disconnect wires from switch making note of wire number and location for reinstallation.  
C. Remove air tube from switch assembly.  
D. Remove switch from control box.  
E. Install new switch in reverse, make sure air tube is not blocked or misaligned.  
To adjust air pressure switch, remove cover from the switch to expose adjusting screw. To  
increase sensitivity, turn screw counter- clockwise; to decrease sensitivity, turn screw  
clockwise.  
CONVEYOR DRIVE MOTOR – REPLACEMENT  
A. Shut off power at main breaker.  
B. Remove conveyor.  
C. Remove control panel top and front cover.  
D. Disconnect wiring from motor and mark for reassembly.  
E. Remove sprocket from motor shaft.  
F. Remove 4 screws and remove conveyor motor and mounting bracket.  
G. Remove mounting bracket from conveyor motor assembly.  
H. Reassemble in reverse order.  
CAPACITOR, CONVEYOR MOTOR – REPLACEMENT  
A. Shut off power at main breaker.  
B. Remove control box cover and front panel.  
C. Discharge capacitor before removing wires. Mark wires for reassembly.  
D. Remove mounting screw and remove capacitor.  
E. Reassemble in reverse order.  
REVERSING SWITCH – REPLACEMENT  
A. Shut off power at main breaker.  
B. Remove control box cover and front panel.  
C. Disconnect wiring from reversing switch and mark for reassembly.  
D. Remove mounting nut and remove reversing switch.  
E. Reassemble in reverse order and check system operation.  
REVERSING CONVEYOR DIRECTION  
A. Shut off power at oven switch.  
B. Set reversing switch in the other position.  
C. Turn oven “on” and check for proper operation.  
FUSEHOLDER – REPLACEMENT  
A. Shut off power at main breaker.  
B. Remove appropriate control box cover.  
Low Profile – 1600 Series Adv Dig Electric S.M. – Int’l  
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C. Remove 2 wires, note wire number and location.  
D. Remove locknut on backside of fuse holder and push out.  
E. Reinstall in reverse order and check system operation.  
THERMOSTAT, HIGH LIMIT, OVEN CAVITY – REPLACEMENT  
A. Shut off power at main breaker.  
B. Remove appropriate control box cover. Remove motor cover and remove oven back to access  
high limit thermostat sensing bulb.  
C. Remove wires from thermostat, note wire numbers for reinstallation.  
D. Remove mounting nut from high limit thermostat and remove high limit from oven.  
E. Reassemble in reverse order. Check system operation.  
ON-OFF SWITCH (POWER) – REPLACEMENT  
A. Shut off power at main breaker.  
B. Remove control box cover.  
C. Depress spring clips on side of switch and push out.  
D. Remove wires from back of switch, note wire number and location.  
E. Reassemble in reverse order and check system operation.  
NOTE: Make sure switch housing is fully seated in control box housing.  
CAPACITOR, MAIN FAN MOTOR – REPLACEMENT  
A. Shut off power at main breaker.  
B. Remove appropriate control box cover.  
C. Remove 2 wires from capacitor, note wire number and location. WARNING: Capacitor has a  
stored charge, discharge before handling or testing.  
D. Cut 2 tyraps securing capacitor to base and replace.  
E. Reinstall in reverse order and check system operation.  
RELAY – REPLACEMENT  
A. Shut off power at main breaker.  
B. Remove control box cover.  
C. Remove wires from relay, note wire numbers and location for reinstallation.  
D. Remove 2 screws from relay base and replace relay.  
E. Reassemble in reverse order making sure wire connections are properly seated.  
F. Check system operation.  
THERMOSTAT, COOLING FAN – REPLACEMENT  
A. Shut off power at main breaker.  
B. Remove appropriate control box cover, remove rear cover.  
C. Remove 2 wires from thermostat, note wire number and location.  
D. Remove 2 mounting screws and replace thermostat.  
E. Reassemble in reverse order and check system operation.  
HIGH LIMIT THERMOSTAT,CONTROL BOX – REPLACEMENT  
A. Shut off power at main breaker.  
B. Remove appropriate control box cover.  
C. Remove 2 wires from thermostat, note wire numbers and location for reinstallation  
D. Remove screws from bracket and remove thermostat.  
E. Reassemble in reverse order and check system operation.  
NOTE: Depress reset button to insure thermostat is set for operation.  
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Low Profile – 1600 Series Adv Dig Electric S.M. – Int’l  
COOLING FAN MOTOR – REPLACEMENT  
A. Shut off power at main breaker.  
B. Remove appropriate control box cover.  
C. Remove 4 mounting screws.  
D. Unplug electrical connector and remove fan motor.  
E. Reassemble in reverse order and check system operation.  
MAIN FAN MOTOR – REPLACEMENT  
A. Shut off power at main breaker.  
B. Shut off gas supply and remove gas line and manifold lines from back of oven.  
C. Remove screws from motor cover housing and lift off.  
NOTE: When ovens are stacked, all motor cover housings are fastened together.  
D. Unplug power connector.  
E. Unplug thermocouple.  
F. Unplug 2 motor connectors.  
G. Remove 8 bolts from oven back ( 4 left, 4 right ) and lift out.  
H. Remove 1 screw from fan hub and slide fan blade off of motor shaft. ( note location of fan blade  
for reinstallation )  
I. Loosen locknuts on cone. Remove 2 mounting bolts and remove motor from back assembly.  
J. Remove 4 hex head screws from motor mount bracket. Remove motor mount from motor and  
reinstall on new motor.  
K. Reassemble in reverse order. NOTE: 1. Make sure motor is centered in back housing.  
2. Verify correct location of fan blade and that it is not hitting fan shroud.  
3. Make sure all connectors are properly seated and making good contact.  
4. When reinstalling gas manifold across back of oven, check all fittings for leaks.  
L. Check system operation (allow 30 minute preheat for all checks) NOTE: Position of the fan on  
the motor shaft will be 1.875” from the top of the oven back cone to the blade spider assembly  
on the fan hub. (see drawing below ).  
THERMOCOUPLE (TYPE K) – REPLACEMENT  
A. Shut off power at main breaker.  
B. Remove control box covers. Remove motor cover and remove oven back to access  
thermocouple.  
NOTE: Removal of oven back assy. Is required to replace thermocouples.  
C. Remove thermocouple from wire form in oven chamber and remove from chamber.  
NOTE: R. H. thermocouple (viewed from front) is connected directly to the temperature control  
board, remove 2 wires , make note of wire colors and location. When changing L. H.  
thermocouple (viewed from front, the back motor cover must also be removed to gain access to  
the thermocouple connector plug.)  
D. Reassemble in reverse order making sure bulb is placed securely in the wire form in the oven  
chamber.  
E. Check system operation, recalibrate as needed. NOTE: The R. H. and L. H. thermocouples  
have different connectors on the wire ends and must be ordered accordingly.  
THERMOCOUPLE MEASUREMENT  
TEMPERATURE (°F) D.C. MILLIVOLTS  
200°  
250°  
300°  
350°  
400°  
450°  
500°  
550°  
600°  
2.8  
4.0  
5.1  
6.0  
7.1  
8.2  
9.3  
10.4  
11.5  
Low Profile – 1600 Series Adv Dig Electric S.M. – Int’l  
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TIME DELAY RELAY – REPLACEMENT  
A. Shut off power at main breaker.  
B. Remove control box cover.  
C. Remove all wires from time delay relay, note wire numbers and location for reinstallation.  
D. Remove mounting screw and remove time delay relay.  
E. Reassemble in reverse order and check system operation.  
HEATING ELEMENT – REPLACEMENT  
A. Shut off power at main breaker.  
B. Remove appropriate control box cover.  
C. Remove wires from heating element, note all wire numbers for reinstallation.  
D. Reassemble in reverse order and check system operation. NOTE: Be sure that leading edge of  
heating element is located in heating element mounting bracket, located in oven cavity.  
CONTACTOR – REPLACEMENT  
A. Shut off power at main breaker.  
B. Remove appropriate control box cover.  
C. Remove all wires from contactor, note all wire numbers for reinstallation.  
D. Remove mounting screws and remove contactor.  
E. Reassemble in reverse order and check system operation.  
POWER FILTER – REPLACEMENT  
A. Shut off power at main breaker.  
B. Remove control box cover.  
C. Remove all wires from the power filter, note all wire numbers for reinstallation.  
D. Reassemble in reverse order and check system operation.  
BEARING, CONVEYOR – REPLACEMENT  
A. Remove conveyor from oven and place on a flat work surface.  
B. Remove connecting links from conveyor belting. See Installation and Operating Instructions  
Manual.  
C. Remove conveyor belting from conveyor. Remove drive sprocket from drive shaft.  
D. Move drive shaft or idle shaft toward end of conveyor, and shaft with bearings will now slip out  
of holding bracket.  
E. Replace bearing and reassemble in reverse order.  
CONTROL TRANSFORMER – REPLACEMENT  
A. Shut off power at main breaker.  
B. Remove wires from primary side, note color and location.  
C. Remove wires from secondary side, note color and location.  
D. Remove two mounting screws and remove transformer.  
E. Reassemble in reverse order and check system operation.  
OVEN CONTROL – REPLACEMENT  
A. Shut off power at main breaker.  
B. Remove control box cover and front panel.  
C. Remove all wiring connections and mark for reassembly.  
D. Remove oven control by pulling control from mounting pins. Remove control from oven.  
E. Before installing new control, set voltage jumper (located at the bottom center of the oven  
control) to the proper (120/240V) position. Install the four push button extensions (included with  
the oven control) by pushing the extensions onto the four set buttons on control.  
F. Reassemble in reverse order and check system operation.  
G. Set the oven control for the proper operating mode. The 1600 series ovens have dual burner  
systems. The oven control must be set to the “Dual oven mode”. Set control as follows: With  
the oven power switch “off”, depress the “temp” and “down” buttons and turn the oven “on”.  
Control will indicate “Low Pro”. Release the buttons, the control will indicate “Temp to store”.  
Press the “temp” button. The control is now set for dual burner operation.  
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Low Profile – 1600 Series Adv Dig Electric S.M. – Int’l  
NOTES: All bake times should be within 10 seconds of set bake time, cavity temperature should be calibrated to within  
5°of set temperature. For temperature calibration, allow oven temperature to stabilize at least for 30 minutes.  
BEFORE APPLYING POWER TO OVEN, ENSURE PROPER VOLTAGE JUMPER SETTING FOR 120V or 240V, AND THE  
50 HZ / 60HZ JUMPER SETTING IS CORRECT. JUMPERS ARE LOCATED AT BOTTOM CENTER OF CONTROL BOARD.  
2
3 Set digital control for proper oven cavity and conveyor belt during power-up.  
A. Single Cavity Ovens - Impinger I or II  
Press and hold the 2 inside buttons while turning the power switch on. After Imp. I or II is displayed, release the  
buttons and control will request the conveyor belt setting - Imp. I or Lo Pro - or Imp. II. The up or down button will  
toggle between these choises. When desired conveyor belt is selected, press the temp. button to store settings.  
B. Dual Cavity Ovens - Impinger Low Profile  
Press and hold the 2 outside buttons while turning the power switch on. After Imp. Lo Pro is displayed, release  
the buttons and control will request the conveyor belt setting - Imp. I or Lo Pro - or Imp. II. The up or down button will  
toggle between these choises. After the 'Imp. I or Lo Pro' conveyor belt is selected, press the temperature button to  
store settings.  
4 Set digital control for proper temperature scale — F or C  
Press and hold the 2 RH buttons to enter Sub-Level program. A prompt will be displayed "Technicians Only"  
After a couple seconds a second prompt will say "Please Release Buttons" After releasing the buttons, quickly  
press the TIME button and the UP button to enter the program. After Sub Set Point is displayed, press temp. button  
to indicate Scale. The up or down buttons will toggle choices between F or C. After desired scale is selected, allow  
control to go into normal run mode. These special promps are for Prom chips 007 and above.  
A.  
Prom chips 006 and below, the Sub-Level program can be entered by pressing the two right buttons only.  
5 Set bake time and oven temperature — Set Point Menu  
A. Press and hold the 2 LH buttons to enter Set Point program. Once in set point program, press temp. button and adjust  
temperature using up or down arrows. Press time button while still in set point program and adjust time using up or  
down buttons. Pressing time or temp. button will show what that respective setting is. Once desired settings are  
programmed, allow control to go into normal running mode.  
B. For normal calibration, set bake time to 10:00 and temperature to 500°F/260°C. Bake time can be checked using standard QA  
procedures. Install cavity temperature probes per standard QA procedures.  
6 Adjusting temperature offset — Sub Set Point Menu  
A. Follow the instructions in Step 4. to enter the Sub-level program. After Sub Set Point is displayed, pressing the temp.  
button will access the following temperature features:  
SCALE (F or C), HI TEMP, LOW TEMP, OFFSET (+ or -), MANUFACTURE MODE (Clear or Active).  
•Do not change SCALE after it was set in step 4A, or settings will reset to default  
values.  
B. To adjust the temperature offset, access the OFFSET display in the Sub Set Point Menu. If cavity temperature is  
above the set temperature, decrease (down button) the offset value. If cavity temperature is below the set  
temperature, increase (up button) the offset value. The amount of offset needed should be the difference between  
the cavity temp. and the set temp. Allow oven to reach set temp. and verify cavity temperature. Readjust offset as necessary.  
C. HI TEMP and LOW TEMP are not normally changed unless requested by the customer. Accessing these displays and  
pressing the up or down buttons will change each indicated setting accordingly.  
D. MANUFACTURE MODE is not normally used, so this feature should be set to 'clear'.  
E. While in Sub Set Point Menu, pressing the time button will access the following time features:  
HI TIME and LOW TIME. These are not normally changed unless requested by the customer. Accessing these  
displays and pressing the up or down buttons will change each indicated setting accordingly.  
Low Profile – 1600 Series Adv Dig Electric S.M. – Int’l  
13  
GENERAL  
ADVANTAGE SERIES  
LETTER  
PART #  
DESCRIPTION  
A
B
C
D
E
F
G
H
J
369110  
369929  
369926  
369925  
369927  
369930  
369211  
369058  
1609  
370252  
369745  
369723  
369783  
369717  
369057  
369501  
369328  
369030  
369390  
370167  
370663**  
370166  
370662**  
370168  
370665***  
370169  
370664***  
Access window assembly  
Window retainer  
Window frame bottom  
Glass, access window  
Window frame, top  
Screw, 10-32x1/4  
Thumb screw  
Baffle  
Oven top  
K
L
Drive cover, R.H.  
Hinge assy., right  
M
N
O
P
Q
R
S
Door assy., small  
Latch, spring  
Finger retaining bracket  
Screw, finger retaining bracket  
Latch  
Leg  
Caster, High stand  
Caster, Low stand  
T
U
V
Baffle, air return U.L., L.R. (S/N 35950 & below)  
Baffle, air return U.L. (S/N 35951 & above)  
Baffle, air return U.R. L.L. (S/N 35950 & below)  
Baffle, air return U.R. (S/N 35951 & above)  
Finger housing T-1, T-3, B-2, B-4 (S/N 35950 & below)  
Finger housing T-1, T-3, B-2, B-4 (S/N 35951 & above)  
Finger housing T-2, T-4, B-1, B-3 (S/N 35950 & below)  
Finger housing T-2, T-4, B-1, B-3 (S/N 35951 & above)  
Columnating plates- see Installation  
Operations manual.  
W
X
369707  
369740  
369718  
369931  
369746  
Finger cover  
Handle assy.  
Y
Z
Door assy. , large  
AA  
BB  
Screw, 8-32x3/8  
Hinge assy.  
** Units from S/N 35951 and above DO NOT contain lower Air Return Baffles. These units only  
contain a total of two (2) Air Return baffles which are placed above the top finger assemblies.  
*** These parts have minor changes not shown in the exploded view drawing on page 15.  
14  
Low Profile – 1600 Series Adv Dig Electric S.M. – Int’l  
GENERAL VIEW  
Low Profile – 1600 Series Adv Dig Electric S.M. – Int’l  
15  
CONTROL BOX, RIGHT  
1621-000-EA, 1628-000-A, 1629-000-A  
LETTER  
PART #  
DESCRIPTION  
A
B
9004646  
369767  
369792  
369769  
7004973  
369025  
370361  
369119  
369134  
370117  
369378  
369766  
369793  
369768  
7004970  
370251  
7002976  
369192  
370485  
369368  
357107  
369013  
369014  
357107  
369431  
369507  
370241  
370360  
7005624  
370256  
369125  
369422  
370180  
370354  
370355  
369432  
370257  
369158  
370357  
370466  
Control Box Front RH  
Firebar Element, Bottom 220V  
Firebar Element, Bottom 230V  
Firebar Element, Bottom 240V  
Mounting Plate Bottom  
Switch, Blower Air  
Motor Assembly L/P CE ADV  
Fuse holder 3 Pole  
Fuse, 50 A.  
Terminal Block 5 Pole  
Cooling Fan Motor 230VAC  
Firebar Element, Top 220V  
Firebar Element, Top 230V  
Firebar Element, Top 240V  
Mounting Plate, Top  
Top Assembly RH  
C
D
E
F
G
H
I
J
K
L
M
N
O
P
R
S
Capacitor Bracket  
Capacitor  
Contactor, Mercury 3P  
Thermostat, oven cavity hi-limit  
Fuse Holder  
Fuse, 3 Amp  
Fuse, 10 Amp  
Fuse holder  
T
Thermostat, control box hi-limit  
Thermostat, cooling fan  
Transformer 240V-24V  
Capacitor 230V Digit  
Bracket, Component Assembly  
Panel Side Control RH  
Terminal Block, 2 Pole  
Relay, Fan 240V  
U
V
X
Z
AA  
AB  
AC  
AD  
Filter EMI  
Bush Button Facia  
AE  
AF  
Digital Control Board  
Switch, Rocker Lighted  
Bracket Gearmotor Mount  
Sprocket, 10 Tooth  
Thermocouple, right  
Timer, cool down, 20 minute  
AG  
AH  
AJ  
Not shown  
Not shown  
16  
Low Profile – 1600 Series Adv Dig Electric S.M. – Int’l  
CONTROL BOX, RIGHT VIEW  
Low Profile – 1600 Series Adv Dig Electric S.M. – Int’l  
17  
CONTROL BOX, LEFT  
1621-000-EA, 1628-000-A, 1629-000-A  
LETTER  
PART#  
DESCRIPTION  
A
B
C
D
E
7006233  
370250  
369378  
370495  
369766  
369793  
369768  
7004970  
369767  
369792  
369769  
7004973  
7006234  
369025  
370272  
369507  
369431  
7005624  
370485  
369368  
7002976  
369192  
370358  
Control Box, Back LH  
Top Assembly LH  
Cooling Fan Motor 230VAC  
Bracket Fan RH  
Firebar Element, Top 220V  
Firebar Element, Top 230V  
Firebar Element, Top 240V  
Mounting Plate, Top  
Firebar Element, Bottom 220V  
Firebar Element, Bottom 230V  
Firebar Element, Bottom 240V  
Mounting Plate, Bottom  
Control Box, Front LH  
Air Switch, Blower  
Panel, Control Box Side LH  
Thermostat, cooling fan  
Thermostat, control box hi-limit  
Bracket Component  
F
G
H
I
J
L
M
N
O
P
Contactor, Mercury 3P  
Thermostat, oven cavity hi-Limit  
Bracket Capacitor  
Capacitor 7.5 MFD  
Thermocouple, left  
R
S
T
Not shown  
18  
Low Profile – 1600 Series Adv Dig Electric S.M. – Int’l  
CONTROL BOX, LEFT VIEW  
Low Profile – 1600 Series Adv Dig Electric S.M. – Int’l  
19  
OVEN BACK  
1621-000-EA, 1628-000-A, 1629-000-A  
LETTER  
PART#  
DESCRIPTION  
A
B
C
D
E
F
G
H
I
369547  
369725  
369776  
369777  
369778  
369761  
369759  
1627  
Wire form thermostat bulb  
Fan, clockwise rotation  
Fan shroud  
Stand-off  
Rear wall assy.  
Motor mount  
Motor, main fan 220/240V 50 Hz.  
Duct cap  
Motor clamp  
Rear duct  
Fan, counter-clockwise rotation  
369033  
370245  
369724  
J
L
20  
Low Profile – 1600 Series Adv Dig Electric S.M. – Int’l  
OVEN BACK VIEW  
Low Profile – 1600 Series Adv Dig Electric S.M. – Int’l  
21  
CONVEYOR  
1621-000-EA, 1628-000-A, 1629-000-A  
LETTER  
A
PART#  
DESCRIPTION  
369830  
369002  
369362  
369314  
2114003  
369812  
369160  
369641  
369220  
369005  
369811  
369161  
369813  
369825  
370247  
370050  
369806  
369163  
Complete conveyor  
Knob, conveyor tension  
Belt, 1ft. section (32 inch wide belt)  
Roll, conveyor, notched  
nut, hex  
Conveyor idler shaft  
Conveyor pan stop  
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Bracket, idle bearing  
Bearing, idle  
Connecting link (32 inch wide belt)  
Conveyor drive shaft  
Roller chain sprocket  
Conveyor bearing block  
Retaining ring  
Drive chain  
Conveyor frame  
Crumb pan  
Conveyor belt, complete (32 inch wide belt)  
22  
Low Profile – 1600 Series Adv Dig Electric S.M. – Int’l  
CONVEYOR VIEW  
Low Profile – 1600 Series Adv Dig Electric S.M. – Int’l  
23  
24  
Low Profile – 1600 Series Adv Dig Electric S.M. – Int’l  

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