KNOCKING NOISE COMING FROM COMPRESSOR

TM 5-6640-213-14

Table 4-2. Ice Maker Troubleshooting - Continued

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

Step 3. Check for defective temperature control.

Replace contro if defective (para. 4-5e.).

25. KNOCKING NOISE COMING FROM COMPRESSOR.

Step 1. Ice maker is not level, or faulty compressor.

Level ice maker. Refer to refrigeration maintenance personnel.

Check if fan motor is not operating.

Step 2.

Check fan and correct applicable defect.

26. THE ICE CUBES ARE TOO BIG.

Water valve switch is out of adjustment.

Adjust water valve switch to permit less water to enter the

ice maker mold (para. 4-5c.).

27. THE ENTIRE SYSTEM IS FREEZING UP.

Ambient temperature is below the freezing point of water.

Drain entire system as follows: shut off water supply, discon-

nect the waterline where it enters the solenoid valve in the unit

compartment. Allow the machine to run for one hour so that all

water is drained through the system. Leave waterline discon-

nected until reusing. Mop out any remaining water in the ice

maker mold. Leave door propped open two inches so that

humidity will not build up inside the cabinet and corrode the

microswitches.

28. ICE HAS BUILT UP ON ICE MAKER, BUT IT IS STILL MAKING ICE

CUBES.

Ice maker has not beed defrosted for a long time.

Defrost ice maker.

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