Cornelius WCF1411-A User Manual

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CONTINUOUS FLOW ICEMAKER

WCC1401-A/WCF1411-A Series

Service Manual

Release Date: October 26, 2006

Publication Number: 630460324SER

Revision Date: N/A

Revision: A

Visit the IMI Cornelius web site at www.cornelius.com

for all your Literature needs.

CONTINUOUS FLOW ICEMAKER

SERVICE MANUAL

The products, technical information, and instructions contained in this manual are subject to change without notice. These instructions are not intended to cover all details or variations of the equipment, nor to provide for every possible contingency in the installation, operation or maintenance of this equipment. This manual assumes that the person(s) working on the equipment have been trained and are skilled in working with electrical, plumbing, pneumatic, and mechanical equipment. It is assumed that appropriate safety precautions are taken and that all local safety and construction requirements are being met, in addition to the information contained in this manual.

To inquire about current revisions of this and other documentation or for assistance with any Cornelius product contact:

www.cornelius.com

800-238-3600

Trademarks and copyrights:

Aurora, Cornelius, Decade, Hydro Boost, Sitco, Spirit, UF-1, Vanguard, Venture, Olympus, and Vista are registered trademarks of IMI Cornelius Inc.

Optifill trademark is pending.

This document contains proprietary information and it may not be

reproduced in any way without permission from Cornelius.

Printed in U.S.A.

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Icemaker Cleaning and Sanitizing Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Monthly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Quarterly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Semi-Annually . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Refrigeration System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Refrigeration System Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Pumpdown Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Expansion Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Water Level Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

How Water Level Control Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Purpose of Water Level Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

To Replace Water Level Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

To Replace Water Level Safety Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Bin Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Gearmotor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Motor Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Start Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

To Replace Gearmotor Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Auger and Extruding Head Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Installation and Shaft Seal Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Upper Nut and Bearing Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

To Replace Bearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Electrical Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Overload Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Compressor Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Capacitor Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Safety Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

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 regulations 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.

Continuous Flow Icemaker Service Manual

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.

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

Models Description VAC HZ PH Wire

WCC1401-A Ice Maker 208/230 60 1 2 12.2 1.2 (2) 2.0 (2) 35 404A 20

Comp.

RLA

Fan

Amps

GRMTR

Amps

Refrigerant

Oz. Type

Circuit

Fuse

FIGURE 1

Continuous Flow Icemaker Service Manual

FIGURE 2. Series WCC1401-A/WCF1411-A Dimension Drawing

Continuous Flow Icemaker Service Manual

ELECTRICAL

FIGURE 3. Schematic WCC1401-A/WCF1411-A

Continuous Flow Icemaker Service Manual

REFRIGERATION SCHEMATIC

Condenser

Compressor

Evaporator

Dryer

TXV

FIGURE 4. WCC1401-A

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. Turn off machine.

2. Shut off water supply

3. Remove ice from storage bin.

4. Mix approved cleaner (4 gallons as directed). Recommended cleaner: Calgon Nickel-Safe, ice machine cleaner. Mixture: 3 ounces per gallon of water.

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. Turn machine on and add cleaner solution to water level control, 2 gallons to each control.

7. Turn on water supply and run machine for 15 minutes.

8. Turn off machine and remove all ice. Turn off water and drain water.

9. Sanitize using household liquid bleach (299 ppm chlorine). Mixture: ½ 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 dispense tray.

11. Fill icemaker with sanitizer by slowly pouring solution into water feed reservoir until full. Solution will drain through overflow tube. Turn on water. Run the icemaker for 15 minutes. Turn off ice machine and remove all ice.

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 recommended monthly procedure, and if a more frequent cleaning and sanitizing pattern has not been established, unit must be cleaned and sanitized.

Semi-Annually

Semi-Annually in addition to all previously established service procedures perform the following:

1. Check for water leaks in tube connections, water fittings and lower icemaker water seal.

2. Check drain tubes for clogs and aged tubes. Replace if tubes are stained or brittle.

3. Check for signs of condensation. Clean where necessary and replace insulation properly.

4. Check safety circuits for proper operation.

5. Check refrigeration system.

6. Check unit for abnormal noise. Tighten machine and cabinet screws if necessary.

7. Check white upper bearing on auger assembly. If bearings are less than 1/16” thick, replace.

Continuous Flow Icemaker Service Manual

REPLACE

1/16

REPLACE

FIGURE 5. UPPER NUT AND BEARING ASSEMBLY

1/16

Continuous Flow Icemaker Service Manual

REFRIGERATION SYSTEM

Suction Pressure +- 2 lb.

Water Temperature

AIR TEMP.

50° 18 18 18 50° 213 213 213 60° 20 20 20 60° 220 220 220 70° 20 20 20 70° 225 225 226 80° 21 21 21 80° 230 230 231 90° 23 23 23 90° 251 251 252 105° 27 27 27 105° 302 302 303

50° 70° 90°

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.

AIR TEMP

Discharge Pressure +- 10 lbs.

Water Temperature

50° 70° 90°

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.

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.)

Continuous Flow Icemaker Service Manual

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. Remove flexible tubing at bottom of water level bowl connected to the overflow.

4. Hold water inlet fitting with proper tool to prevent it from rotating when disconnecting the water inlet.

5. 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. Shut off main power switch or unplug the ice dispenser from electrical outlet.

2. Unplug Molex connector connecting switch to electrical box.

3. Remove the 2 screws anchoring the water level safety switch to the bottom of the water level control mounting bracket.

Continuous Flow Icemaker Service Manual

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.

Continuous Flow Icemaker Service Manual

GEARMOTOR

OVERLOAD TRIPPED

Check water level control

and evaporator water tube

for line build-up restrictions.

IMPORTANT

Icemaker runs when

reset but problem has

not been found. Continue checking for overload as follows to

guard against future

problems.

Icemaker

runs.

Short run. Trips

again in 2

minutes. 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.

CAUTION

Clear ice from

evaporator and

auger before

resetting overload.

Reset overload.

Resets but

motor does

not run.

Resets but

motor does

not run.

Check

gearmotor

circuits.

Will not

Reset.

Overload

hot try again.

Will not

reset.

Replace

overload.

YES

CLEAN

See Instructions.

Continuous Flow Icemaker Service Manual

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 6. GEARMOTOR ASSEMBLY

TO REPLACE GEARMOTOR ASSEMBLY

1. Disconnect the icemaker from the electrical power source.

2. Disconnect the transmission cable from the electrical box.

3. Remove the 4 hex head bolts securing the evaporator to the top of the transmission.

4. 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

BEARING DELRIN

ANTI–ROTATION RIB – 3 PLACES

BEARING NYLON

GROOVE

EXTRUDING HEAD

AUGER

“D” DRIVE

FIGURE 7. AUGER AND EXTRUDING HEAD REMOVAL

AUGER AND EXTRUDING HEAD REMOVAL

1. Disconnect unit from power supply.

2. Remove storage container cover and put aside.

3. Turn off water supply to icemaker.

4. 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).

3. 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.

4. 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

FIGURE 8. SHAFT SEAL 700 AND 1000

Continuous Flow Icemaker Service Manual

E–RING

WASHER, PLAIN FLAT

SHAFT SEAL

MOUNT, SHAFT SEAL

SEAT, SHAFT SEAL

GEARMOTOR

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. Remove top panels.

3. Remove Dispense Tray Cover.

4. 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.

Continuous Flow Icemaker Service Manual

ELECTRICAL CHECKOUT

1. Be sure the unit is disconnected from the power source. Remove the compressor electrical box cover. Check for obvious damage and loose wires.

2. Disconnect the fan motor leads. Since capacitors store energy, short the capacitor with a screwdriver. This will prevent shocks.

3. 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.

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.

3. 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.

4. Check between screw terminal on the overload and “C” on the compressor. Check and repair the lead or connections if there is no continuity.

FIGURE 9. OVERLOAD CHECK

FIGURE 10. COMPRESSOR CHECK

CAPACITOR CHECK

1. Check or replace start capacitor, disconnect bleed resistor before checking for shorted capacitor.

2. 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. Low water shut off reed switch located in icemaker float assembly. (Automatic reset type.)

2. Gearmotor thermal overload, manual reset type (red button on motor).

3. Compressor thermal overload, automatic reset type.

4. Anti–freeze relay and associated circuit. See wiring diagrams.

5. Main service switch located on top of the control box.

6. Bin Control.

7. High pressure cut out (water cooled only).

CUSTOMER COMMENTS

GUIDE TO GOOD ICE

CHECK ICEMAKER LOCATION CONDITIONS FIRST

Continuous Flow Icemaker Service Manual

CHECK ICE MAKER

“It runs but the ice is too soft.”

“The icemaker is not producing enough ice.”

“The ice is too wet.”

“It makes too much noise.” (With this comment the ice is usually extremely hard and larger than normal.)

Over Compression

Proper air flow for condensing system.

Location too close to high units such as coffee urns, deep fryers, grills, etc.

Supply water conditions

Water too warm (above 90 F).

Water artificially softened above 262 ppm sodium chloride.

Normal water supply too high in total dissolved solids (above 500 PPM).

Check to see if noise objection is normal fan and air flow noise.

Supply water conditions.

Water too cold (below

50 F). (Possibly running from pre-cooler.)

Use gauges for checking suction and head pressures. See manual for correct reading and conditions. Check frost line and sight glass.

Check water level for proper adjustment and restrictions. See Manual.

Check evaporator assembly for worn parts, bearings, scored evaporator and auger, bad expansion valve. etc.

Check for loose parts and screws rattling.

Check evaporator assembly for worn parts, bearings, scored evaporator and auger, bad expansion valve, etc.

Obstructions partially blocking ice exit from top of evaporator.

Check fan and fan shroud.

Continuous Flow Icemaker Service Manual

TROUBLESHOOTING

Ye s

CLEAN

see

instructions.

Will not

reset.

Overload

hot try

again.

Will not

reset

replace

overload

GEARMOTOR OVERLOAD

TRIPPED

ICEMAKER OPERATING BUT

SOFT ICE

LOW WATER SAFETY

SWITCH OPEN

Check water level control

and evaporator water tube

for lime build up restr iction.

Check bin switch

Check that water is turned on.

Check for restriction in water line.

Check incoming water pressure

Reset

CAUTION

Clear ice from

evaporator and

auger before re

Refer to guide

to Good Ice in

service manual.

Ye s

Clean all related

drain lines.

Low suction pressure

(20 lbs. or below).

(minimum 10 lbs.).

Check water safety switch.

overload.

setting over

load.

TXV bulb

lost charge.

Suction line

not

TXV not

operating

insulated.

properly.

Reset but

Icemaker runs

Replace valve

evacuate and

Bulb

uninsulated.

Bulb

loose.

recharge.

motor does

not run.

Clean and

insulate.

Clean

and

Check

gearmotor

Short run trips

again in 2 min

IMPORTANT

Icemaker runs when reset

tighten.

circuit.

utes. Check gear

motor circuit.

but problem has not been

found.

Continue checking for

overload as follows to

guard against future

problems

High or low voltage weak power lines can cause overloads on icemaker restarts

High running current. Check motor circuits and start relay - Auger delay failed.

Mechanical parts worn. Scored evaporator or auger.Worn thrust bearing.

Ice maker not turning off. Failed ice level control.

Over compression. Low water inlet temperature. Restriction in water line from

reservoir.

Contaminated charge or bad compressor.

Low charge or gas leak.

Low suction pressure. Improper expansion valve sensing bulb. Location or insulation

OVERLOAD GUIDE

ELECTRICAL

ICEMAKER

Icemaker

froze up.

Check if

auger is

turning.

and/or defective expansion valve

REFRIGERANT

Check if extruding

head is down in

Check gears in

evaporator tube.

gearbox.

TROUBLESHOOTING CHART - ICEMAKER NOT OPERATING

ICEMAKER RUNS BUT

NO POWER

DOES NOT MAKE ICE

Condenser fan running

but compressor not running

Remote condenser

units only

Check electrical wiring in con

trol box for loose connec

Check line voltage.

Check compressor winding

Remote condenser

not running.

tions.

Check for failed service

switch or relay.

High suction pressure

(30 lbs. or above).

Replace

valve.

Evacuate

and

recharge

Check for

kinks or

damage to

Replace

dryer.

Evacuate

LAC not operating

properly (minimum

discharge pressure

Check for

leaks.

liquid line.

and

recharge

180 lbs.).

system.

Replace LAC valve,

evacuate and

recharge system.

Check drive on

gearmotor.

Plugged or

faulty TXV.

Head

Pressure

high.

Evaporator water tube

may have an air bubble.

Clear air bubble from

& components.

Check power to machine.

tube.

Check power

to condenser.

Check electrical

wiring in control box

for loose connections.

High pressure

switch open or

cycling on and off.

Condenser

To o m u c h

Non-condensible

Discharge

Valve

stuck

dirty or

restricted.

fan not

running.

refrigerant in

system.

in system.

king valve

partially

closed.

open.

Replace

valve.

Evacuate and

Check electrical circuit

to fan motor.

recharge system.

Open

Restricted

liquid line.

Plugged

liquid line

dryer.

Check fan motor.

Remote condenser

units only

Low on

Clean condenser.

Low pressure switch open

or cycling on and off.

valve

refrigerant.

Continuous Flow Icemaker Service Manual

IMI Cornelius Inc.

www.cornelius.com

Cornelius WCF1411-A User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual