GEARMOTOR
The gearmotor is 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 trans- mission, an overload condition within the evaporator or an electrical malfunction. It does this by sensing amper- age draw. If the motor stalls the start relay would energize and stay energized. The amperage would surge 5 to 6 times greater than the normal draw. In this event the overload would shut off the transmission in 4 to 8 sec- onds.
If the motor is subjected to an abnormal load, but does not reach a 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 overload, through the safety circuit, also shuts off the compressor.
GEARMOTOR
OVERLOAD TRIPPED
Check water level control and evaporator water tube for line
NO
CAUTION Clear ice from
evaporator and auger before resetting overload.
Reset overload.
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| IMPORTANT |
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| Icemaker |
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| Resets but | ||||
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| Icemaker runs when |
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| reset but problem has |
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| not been found. |
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| Continue checking for |
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| overload as follows to |
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| Short run. Trips |
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| guard against future |
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| again in 2 |
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| problems. |
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| minutes. Check |
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| motor does | |||||||
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| not run. | |
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| Check | |
OVERLOAD GUIDE |
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ELECTRICAL: |
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| gearmotor | ||||
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| circuits. | |||||
SHigh or low voltage. Weak power lines can cause overloads on icemakers restarts.
SHigh running current (2.4amps or above). Check motor circuits and start relay.
SAuger delay failed.
ICEMAKER
SMechanical parts worn. Scored evaporator or auger. Worn thrust bearing.
SIcemaker not turning off. Failed ice level control.
SOver compression. Low water inlet temperature. Restrictions in water line from reservoir.
REFRIGERANT
SContaminated charge or bad compressor.
SLow charge or gas leak.
SLow suction pressure. Improper expansion valve. Sensing bulb location or insulation and/or defective expansion valve.
YES
CLEAN
See Instructions.
Will not
Reset.
Overload
hot try again.
Will not reset.
Replace overload.
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. (See Figure 7).
If no continuity on start or run winding test, replace gearmotor. If continuity on grounded motor test, replace gearmotor.
630460154 | 16 |
