Scotsman SCE170 Manual de servicio descargar pdf (Pagina 21)

SYMPTOM POSSIBLE CAUSE PROBABLE FIX

Machine operates, no ice is

formed.

Unit stuck in harvest cycle. Check for curtain stuck closed.

Cubes too small, adjust bridge

thickness, see Cube Size/Bridge

thickness section

Refrigerant leak Locate leak, repair, replace dryer,

evacuate and weigh in nameplate

charge

Compressor will not operate Check compressor contactor coil.

Check compressor.

Check compressor start circuit

Hot gas valve stuck open. Replace hot gas valve.

Refrigerant leak. Locate leak, repair, replace dryer,

evacuate and weigh in nameplate

charge.

Hot gas valve and purge valve

stay on after curtains close and

both curtain indicator lights are on.

Replace control board.

Purge valve leaks thru. Clean or replace purge valve

Compressor cycles on and off. Compressor overheats. Low on refrigerant. Repair leak,

evacuate and weigh in nameplate

charge

Air cooled - fan not blowing,

repair fan.

TXV not letting enough refrigerant

into evaporators, replace TXV.

Mechanical fault with compressor,

replace compressor.

Check start capacitor

Check start relay

Frost on compressor Some frost will not hurt. Do nothing.

TXV meters too much refrigerant. Replace TXV.

To check bin control system:

When curtain is closed, BOTH

curtain indicator lights on the

control board in the control box

should be ON, if not:

Curtain not closed properly Check action of curtains

Sensor not in correct position Place sensor assembly in correct

position

Curtain missing Replace curtain

Curtain sensor has failed. Replace sensor assembly.

Service Diagnosis

SCE170

October 1998

Page 21

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Scotsman SCE170 Manual de servicio Pagina 21

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