®
CONTINUOUS FLOW ICEMAKER
WCC1401-A/WCF1411-A Series
Service Manual
Release Date: October 26, 2006
Publication Number: 630460324SER
Revision Date: September 24, 2008
Revision: C
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TABLE OF CONTENTS
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Read and Follow all Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Recognize Safety Alerts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Different Types of Alerts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Safety Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Qualified Service Personnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Shipping And Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Specification Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Refrigeration Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Cleaning and Sanitizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Icemaker Cleaning and Sanitizing Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Monthly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Quarterly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Semi-Annually . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Refrigeration System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Refrigeration System Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Pumpdown Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Expansion Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Water Level Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
How Water Level Control Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Purpose of Water Level Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
To Replace Water Level Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
To Replace Water Level Safety Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Bin Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Gearmotor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Motor Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Start Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
To Replace Gearmotor Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Auger and Extruding Head Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Installation and Shaft Seal Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Upper Nut and Bearing Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
To Replace Bearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Electrical Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Overload Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Compressor Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Capacitor Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Safety Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
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Continuous Flow Icemaker Service Manual
SAFETY
SAFETY INSTRUCTIONS
Read and Follow all Safety Instructions
Read and follow all safety instructions in this manual and on the machine (decals, labels, and laminated
cards).
Read and understand all applicable OSHA (Occupation Safety and Health Administration) safety regula-
tions before operating the machine.
Recognize Safety Alerts
This is the safety alert symbol. When you see it in this manual or on the machine be
alert to the potential of personal injury or damage to the machine.
Different Types of Alerts
There are 3 types of safety alerts:
DANGER — Indicates an immediate hazardous situation which if not avoided WILL result in seri-
ous injury, death, or equipment damage.
WARNING — Indicates a potentially hazardous situation which, if not avoided, COULD result in
serious injury, death, or equipment damage.
CAUTION — Indicates a potentially hazardous situation which, if not avoided, MAY result in
minor or moderate injury or equipment damage.
SAFETY TIPS
• Carefully read all safety messages in this manual and safety signs on the machine.
• Keep safety signs in good condition and replace missing or damaged safety signs.
• Learn how to operate the machine and how to use the controls properly.
• Do not let anyone operate the machine without proper training. This appliance is not intended for use
by very young children or infirm persons without supervision. Young children should be supervised to
ensure that they do not play with the appliance.
• Keep your machine in proper working condition and do not allow unauthorized modifications to the
machine.
QUALIFIED SERVICE PERSONNEL
CAUTION — Only trained and certified electrical, plumbing and refrigeration technicians should
service this unit. ALL WIRING AND PLUMBING MUST CONFORM TO NATIONAL AND LOCAL
CODES.
SHIPPING AND STORAGE
CAUTION — Before shipping, storing, or relocating the Unit, syrup systems must be sanitized
and all sanitizing solution must be purged from the syrup systems. All liquids, after sanitizing, must
be purged from the unit. A freezing ambient environment will cause residual sanitizing solution or
water remaining inside the Unit to freeze resulting in damage to the internal components.
© 2006-2008, IMI Cornelius Inc.
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Publication Number: 630460324SER
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Continuous Flow Icemaker Service Manual
GENERAL DESCRIPTION
This section gives the Unit description, theory of operation, and design data for continuous flow icemaker
series WCC1401-A.
SPECIFICATION CHART
Refrigerant
Comp.
RLA
Fan
Amps
GRMTR
Amps
Circuit
Fuse
Models
Description
VAC
HZ PH Wire
60
Oz.
Type
WCC1401-A
Ice Maker
208/230
1
2
12.2
1.2 (2) 2.0 (2)
35
404A
20
FIGURE 1
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FIGURE 2. Series WCC1401-A/WCF1411-A Dimension Drawing
© 2006-2008, IMI Cornelius Inc.
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ELECTRICAL
FIGURE 3. Schematic WCC1401-A/WCF1411-A
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REFRIGERATION SCHEMATIC
Condenser
Evaporator
TXV
Dryer
Compressor
FIGURE 4. WCC1401-A
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FIGURE 5. WCC2001QTR REFRIGERATION DIAGRAM
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Continuous Flow Icemaker Service Manual
CLEANING AND SANITIZING
ICEMAKER CLEANING AND SANITIZING PROCEDURES
Do not use any of the ice made during cleaning operations.
Clean and sanitize ice storage area when cleaning icemaker.
1.
2.
3.
4.
Turn off machine.
Shut off water supply
Remove ice from storage bin.
Mix approved cleaner (2 gallons as directed). Recommended cleaner: No-Calgon liquid ice
machine cleaner. Mixture: 3-1/3 ounces per gallon of water.
WARNING: Cleaner must be safe for stainless steel. NO EXCEPTIONS!
5.
Clean auger/diverter assembly and ice transition/drop tube in a sink using cleaner mixture and
reinstall in icemaker. Using cleaner, wipe down dispense tray.
6.
7.
8.
9.
Turn machine on and add cleaner solution to water level control until 2 gallons have been used.
Turn on water supply and run machine for 15 minutes.
Turn off machine and remove all ice.
Sanitize using household liquid bleach (50 ppm chlorine). Mixture: 1 fluid ounce per gallon room
temperature water. 2 minute exposure time.
10. Sanitize auger/diverter assembly and ice transition/drop tube in a sink using sanitizing solution and
reinstall in icemaker. Using sanitizer, wipe down the dispense tray.
11. Fill icemaker with sanitizer by slowly pouring solution into water feed reservoir until full. Solution
drains through overflow tube. Do not run machine. Allow to air dry.
12. If icemaker is used in conjunction with ice dispenser or storage bin, follow manufacturer's
recommended cleaning instructions at this time.
MAINTENANCE
Preventive maintenance can increase the trouble free life of your icemaker. Many authorized service
agencies offer service contracts for your icemaker. Contact your local distributor for further information.
Monthly
1.
Clean the condenser. Use a brush, vacuum cleaner or blower from inside with air or CO2 gas.
2.
Inspect water feed reservoir at least once a month until a definite pattern for cleaning and sanitizing
has bee established.
Quarterly
This is the maximum period of time between cleaning and sanitizing the icemaker. In addition to rec-
ommended monthly procedure, and if a more frequent cleaning and sanitizing pattern has not been
established, unit must be cleaned and sanitized.
© 2006-2008, IMI Cornelius Inc.
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Publication Number: 630460324SER
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Semi-Annually
Semi-Annually in addition to all previously established service procedures perform the following:
1.
2.
3.
4.
5.
6.
7.
Check for water leaks in tube connections, water fittings and lower icemaker water seal.
Check drain tubes for clogs and aged tubes. Replace if tubes are stained or brittle.
Check for signs of condensation. Clean where necessary and replace insulation properly.
Check safety circuits for proper operation.
Check refrigeration system.
Check unit for abnormal noise. Tighten machine and cabinet screws if necessary.
Check white upper bearing on auger assembly. If bearings are less than 1/16” thick, replace.
REPLACE
OK
1/16
1/16
OK
REPLACE
FIGURE 6. UPPER NUT AND BEARING ASSEMBLY
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REFRIGERATION SYSTEM
Suction Pressure +- 2 lb.
Water Temperature
Discharge Pressure +- 10 lbs.
Water Temperature
50°
18
20
20
21
23
27
70°
18
20
20
21
23
27
90°
18
20
20
21
23
27
50°
213
220
225
230
251
302
70°
213
220
225
230
251
302
90°
213
220
226
231
252
303
50°
60°
70°
80°
90°
105°
50°
60°
70°
80°
90°
105°
REFRIGERATION SYSTEM ADJUSTMENTS
A complete understanding of the icemaker and hermetic refrigeration system is necessary before any
adjustments are made. The refrigeration technician must use high and low side pressure readings, water
and air temperatures, plus general conditions of cleanliness to assess the refrigeration system status
when making any adjustments.
All icemaker products are tested and adjusted at the factory prior to shipment where the ambient
temperature ranges from 650F to 900F, depending on the season of the year.
Whenever a new icemaker is initially installed and started-up, it is imperative that the start-up operator
make the following checks and readjustments for local conditions.
PUMPDOWN CYCLE
The Series1400 unit is a split system. The icemaker consists of two gearmotor/evaporator assemblies
and a liquid line solenoid. The condensing unit consists of a compressor, condenser, fan motor and
receiver. The icemaker is designed for indoor use only. The condensing unit is designed for outdoor use.
The two units are connected with a precharged line kit.
The system operates on a pump down cycle. When the bin thermostat senses ice it opens the circuit to
the liquid line solenoid. The liquid line solenoid closes and stops the flow of refrigerant to the
evaporators. This causes the suction pressure to drop. The condensing unit is shut off when the suction
pressure drops below 5 psig. The low-pressure control should be adjusted to open between 0-5 psig and
close between 15-20 psig. Note: there is no electrical connection between the two units.
EXPANSION VALVE
You will find a thermal expansion valve on icemakers, which is used to control the amount of refrigerant
flowing through the evaporator. Improperly installed or defective expansion valves may cause low
production, soft ice, squeaking from evaporator and excessive load inside evaporator.
By using general refrigeration trouble shooting along with the pressure charts, you can easily determine
whether or not the expansion valve is working properly.
NOTE: Units with thermostatic expansion valve, the valve is located on bottom refrigerant line.
Sensing bulb is located on top refrigerant line.
Very high discharge pressure is present in system. Quick disconnects on your gages will minimize
Danger and loss of refrigerant. Comply with federal regulations for reclaiming refrigerant.
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WATER LEVEL CONTROL
HOW WATER LEVEL CONTROL WORKS
When water is introduced through the inlet fitting the float rises, the float pushes against a lever that in
turn, forces the poppet assembly against the inlet fitting valve seat that seals the water off. See Figure 1
(page 7). Before the water inlet is sealed, the safety switch is operated. In the event of a water failure the
float would drop down and operate the safety switch to shut off the machine.
If water level control will not shut off and seal at level as indicated, be sure inlet pressure does not
exceed recommended factory operating range.
Under ordinary circumstances adjustment should not be necessary providing it was properly adjusted
when unit was installed or relocated. If however, the control becomes inoperative, repair or replace. See
Start-up Adjustment in the installation manual.
PURPOSE OF WATER LEVEL CONTROL
1.
To automatically maintain proper water level in the evaporator when the unit is running and making
ice.
2.
A safety switch is operated in the event of an interruption in water supply. The switch shuts off the
electrical power to the icemaker and its refrigeration system. Switch will reset as soon as cause of
water failure has been corrected and proper water level in icemaker has again been reached.
3.
The transparent bowl not only provides a visible check of water level, but also is a good guide to the
internal conditions which exist within the icemaker assembly itself. (See cleaning procedure.)
TO REPLACE WATER LEVEL CONTROL
1.
Shut off the water supply. Shut off the main power switch or unplug the ice dispenser from electrical
outlet.
2.
Remove the flexible tubing from bottom of water level control and drain water from water level
control and evaporator.
3.
4.
5.
Remove flexible tubing at bottom of water level bowl connected to the overflow.
Hold water inlet fitting with proper tool to prevent it from rotating when disconnecting the water inlet.
Remove wing nut holding water control to its mounting bracket. Control can be removed by lifting
straight up.
TO REPLACE WATER LEVEL SAFETY SWITCH
1.
2.
3.
Shut off main power switch or unplug the ice dispenser from electrical outlet.
Unplug Molex connector connecting switch to electrical box.
Remove the 2 screws anchoring the water level safety switch to the bottom of the water level
control mounting bracket.
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BIN CONTROL
The type of bin control used on all WCC and WCF Models is an electronic control. The control is supplied
with power to terminals X1 and X2. Terminals X3 and X4 are a normally closed switch which open when
the thermostat sensor bulb senses ice. The WCC1401-A/WCF1401-A uses 2 controls, terminals X1 and
X2 are connected in parallel and terminals X3 and X4 are connected in series.
The sensing bulbs are located in a 5/16” stainless steel tube which hangs from the dispense tray covers
down through the center of the drop tube.
To test the switch, start the icemaker and block the outlet tube, about ½ full the icemaker should shut off.
When the tube is cleared the icemaker should restart within 5 min.
The Bin controls are in electrical series with the coil on the antifreeze relay along with the low water
safety.
The controls are held in place inside the electrical box by 4 screws. The control bulbs are in the drop
tubes. They can be removed by pulling the cable located on the top of the dispense tray cover. When
replacing the sensor make sure the bulb is inserted to the bottom of the thermostat well.
GEARMOTOR
The gearmotors are equipped with a start relay and a manual reset overload.
When current is applied, the relay energizes and completes the circuit to the start winding. The motor
reaches a predetermined speed and the relay drops out, disconnecting the start winding. The run
winding remains in the circuit as long as current is applied.
The purpose of the overload is to automatically shut off the motor in the event of a mechanical bind of the
transmission, an overload condition within the evaporator or an electrical malfunction. It does this by
sensing amperage draw. If the motor stalls the start relay would energize and stay energized. The
amperage would surge 5 to 6 times greater than normal draw. In this event the overload would shut off
the transmission in 4 to 8 seconds.
If the motor is subjected to abnormal load, but does not reach stall condition, the overload will react, but
over a greater period of time. The reaction time depends upon the amperage to which it is subjected.
The overloads to each motor are connected in series; if either overload trips both gearmotors and the
liquid line solenoid are shut off.
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GEARMOTOR
OVERLOAD TRIPPED
Check water level control
and evaporator water tube
for line build-up restrictions.
NO
YES
CAUTION
Clear ice from
evaporator and
auger before
CLEAN
See Instructions.
resetting overload.
Reset overload.
IMPORTANT
Icemaker
runs.
Will not
Reset.
Resets but
motor does
not run.
Icemaker runs when
reset but problem has
not been found.
Continue checking for
overload as follows to
guard against future
problems.
Short run. Trips
again in 2
minutes. Check
gearmotor circuits.
Overload
hot try
again.
Resets but
motor does
not run.
Will not
reset.
Replace
overload.
Check
gearmotor
circuits.
OVERLOAD GUIDE
ELECTRICAL:
High or low voltage. Weak power lines can cause overloads on icemakers restarts.
High running current (2.4amps or above). Check motor circuits and start relay.
Auger delay failed.
ICEMAKER
Mechanical parts worn. Scored evaporator or auger. Worn thrust bearing.
Icemaker not turning off. Failed ice level control.
Over compression. Low water inlet temperature. Restrictions in water line from reservoir.
REFRIGERANT
Contaminated charge or bad compressor.
Low charge or gas leak.
Low suction pressure. Improper expansion valve. Sensing bulb location or insulation
and/or defective expansion valve.
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MOTOR CHECK
The resistance readings on the winding will be between 5 to 25 ohms. A meter capable of these low
readings must be used. The start relay cover must be removed.
If no continuity on start or run winding test, replace gearmotor. If continuity on grounded motor test,
replace gearmotor.
START RELAY
1.
Check between “2” and “4” on relay (with relay unplugged). If there is continuity replace the relay,
as the relay contacts should be open.
2.
Check between “3” and “4” on relay, if no continuity replace the relay.
FIGURE 7. GEARMOTOR ASSEMBLY
TO REPLACE GEARMOTOR ASSEMBLY
1.
2.
3.
4.
Disconnect the icemaker from the electrical power source.
Disconnect the transmission cable from the electrical box.
Remove the 4 hex head bolts securing the evaporator to the top of the transmission.
Remove the 4 bolt’s holding the transmission and bracket to frame base, while supporting the
weight of the evaporator. Remove the transmission from the unit.
5.
When replacing the transmission, it may be necessary to rotate the auger back and forth to align
the motor shaft and auger.
AUGER NUT
AUGER
BEARING NYLON
BEARING DELRIN
“D” DRIVE
GROOVE
EXTRUDING
HEAD
ANTI–ROTATION
RIB – 3 PLACES
FIGURE 8. AUGER AND EXTRUDING HEAD REMOVAL
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AUGER AND EXTRUDING HEAD REMOVAL
1.
2.
3.
4.
Disconnect unit from power supply.
Remove storage container cover and put aside.
Turn off water supply to icemaker.
After ice has melted from head take hold of the auger nut and lift straight up to disengage from
icemaker.
5.
When replacing the auger assembly, make certain that both the auger engages the output shaft
drive and the extruding head ribs engage the evaporator tube.
INSTALLATION AND SHAFT SEAL REPLACEMENT
1.
Place shaft seal locator seat and shaft
seal mount over gearmotor output shaft
and push down until shaft seal seat and
shaft seal mount rest flush on top of
gearmotor.
2.
Place rubber coated ceramic seal
(important: ceramic face up) over output
shaft and push down until seal nest in
recess of shaft seal mount. (lubricate
rubber on ceramic seal with rubber
lubricant).
E–RING
WASHER, PLAIN FLAT
SHAFT SEAL
MOUNT, SHAFT
SEAL
3.
4.
Place shaft seal with carbon face down
(spring up) over output shaft and push
(gently) downward until seal rests on
carbon face of the output shaft seal.
SEAT, SHAFT SEAL
Place flat washer over output shaft and let
rest on the output shaft seal. Push down
on the washer compressing the spring on
the output shaft seal. While holding the
seals (down) in place slide the E–ring into
the groove on the output shaft
GEARMOTOR
FIGURE 9. SHAFT SEAL 700 AND 1000
UPPER NUT AND BEARING ASSEMBLY
The upper white bearing located on top of the auger is used to absorb the force between the auger and
extruding head.
NOTE: The bearings are 3/32 thick. When they wear below 1/16 they should be replaced.
Bearings to be inspected for wear during quarterly maintenance.
To Replace Bearing
1.
Disconnect unit from electric power.
2.
3.
4.
Remove top panels.
Remove Dispense Tray Cover.
Use an open end wrench on auger nut connected to bearing and turn counterclockwise to remove
assembly.
5.
Remove worn bearings. Replace with new bearings and then reinstall assembly.
NOTE: If auger turns with nut, remove cover on top of gearmotor stator and hold motor while
loosening nut.
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© 2006-2008, IMI Cornelius Inc.
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Continuous Flow Icemaker Service Manual
ELECTRICAL CHECKOUT
1.
2.
3.
Be sure the unit is disconnected from the power source. Remove the compressor electrical box
cover. Check for obvious damage and loose wires.
Disconnect the fan motor leads. Since capacitors store energy, short the capacitor with a
screwdriver. This will prevent shocks.
Disconnect the compressor terminal wires.
OVERLOAD CHECK
Using a volt–ohmmeter check the continuity
across the overload, contact #1 and #3. If none,
wait for unit to cool down and try again. If still no
continuity, the overload protector is defective
and should be replaced.
FIGURE 10. OVERLOAD CHECK
COMPRESSOR CHECK
The resistance readings on the windings will be
between 0.25 to 10.00 ohms, a meter capable of
these low readings must be used.
1.
Check between “C” and “R.” Replace the
compressor if there is no continuity as the
run windings are open.
2.
Check between “C” and “S.” Replace the
compressor if there is no continuity as the
start windings are open.
FIGURE 11. COMPRESSOR CHECK
3.
4.
Check between “C” and “R” or “S” and the shell of the compressor. If there is continuity, replace the
compressor as the motor is grounded.
Check between screw terminal on the overload and “C” on the compressor. Check and repair the
lead or connections if there is no continuity.
CAPACITOR CHECK
1.
2.
Check or replace start capacitor, disconnect bleed resistor before checking for shorted capacitor.
Check or replace run capacitor (if supplied) check for shorted capacitor or either terminal grounded
to case.
SAFETY CONTROLS
Your icemaker unit has several safety and control devices incorporated into its design.
WARNING: None of the below described devices should ever be “bypassed” to allow the unit to
function.
The safety and control system shut–off devices are:
1.
2.
3.
4.
5.
6.
7.
Low water shut off reed switch located in icemaker float assembly. (Automatic reset type.)
Gearmotor thermal overload, manual reset type (red button on motor).
Compressor thermal overload, automatic reset type.
Anti–freeze relay and associated circuit. See wiring diagrams.
Main service switch located on top of the control box.
Bin Control.
High pressure cut out (water cooled only).
© 2006-2008, IMI Cornelius Inc.
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Publication Number: 630460324SER
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Continuous Flow Icemaker Service Manual
GUIDE TO GOOD ICE
CUSTOMER
COMMENTS
CHECK ICEMAKER
LOCATION CONDITIONS
FIRST
CHECK ICE MAKER
“It runs but the ice is
too soft.”
Proper air flow for condens-
ing system.
Use gauges for checking
suction and head
pressures. See manual
for correct reading and
conditions. Check frost
line and sight glass.
“The icemaker is not
Location too close to high
units such as coffee urns,
deep fryers, grills, etc.
producing enough ice.”
“The ice is too wet.”
Supply water conditions
Check water level for
proper adjustment and
restrictions. See
Manual.
Water too warm
(above 90oF).
Water artificially softened
above 262 ppm sodium chlo-
ride.
Check evaporator
assembly for worn
parts, bearings, scored
evaporator and auger,
bad expansion valve.
etc.
Normal water supply too high
in total dissolved solids
(above 500 PPM).
“It makes too much
noise.”
(With this comment
the ice is usually
extremely hard and
larger than normal.)
Check to see if noise
objection is normal fan and
air flow noise.
Check for loose parts
and screws rattling.
Check evaporator
assembly for worn
parts, bearings, scored
evaporator and auger,
bad expansion valve,
etc.
Over
Compression
Supply water conditions.
Water too cold (below
50oF). (Possibly running
from pre-cooler.)
Obstructions partially
blocking ice exit from top of
evaporator.
Check fan and fan shroud.
Publication Number: 630460324SER
- 16 -
© 2006-2008, IMI Cornelius Inc.
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Continuous Flow Icemaker Service Manual
TROUBLESHOOTING
© 2006-2008, IMI Cornelius Inc.
- 17 -
Publication Number: 630460324SER
Download from Www.Somanuals.com. All Manuals Search And Download.
IMI Cornelius Inc.
Download from Www.Somanuals.com. All Manuals Search And Download.
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