Scotsman MC 45 Manual de servicio descargar pdf (Pagina 34)

Page 34

SYMPTON POSSIBLE CAUSE SUGGEST CORRECTION

Irregular cubes size & some Some jets plugged remove spray bar & jet bearing

cloudy and clean them

Shortage of water See shortage of water

Unit not level Level as required

Spray bar not rotating and clean them

Remove spray bar & jet bearing

Cubes too large Freezing cycle too long Review setting of DIP SWITCH keys

Inoperative evaporator sensor Replace sensor

Decrease ice capacity Inefficient compressor Replace

Leaky water valve repair or replace

Non-condensable gas in system Recover refrig. add new gas &

drier, after evacuating the system

Poor air circulation or excessive Relocate the unit or provide for

hot location (Red-alarm LED glows) more ventilation

Overcharge of refrigerant Correct the charge. Purge off

slowly

Capillary tube partially restricted Recover refrig. add new gas &

drier, after evacuating the system

Hot gas solenoid valve leaking Replace valve

Undercharge of refrigerant Charge to data plate indication

Spray bar not rotating Remove spray bar & jet bearing

and clean them

Discharge head pressure too high See incorrect discharge pressure

Poor harvest Too short defrost time Check & adjust DIP SWITCH

keys 5-6-7

Restriction in incoming water line Check water valve strainer and flow

control. If necessary enlarge the

flow control orifice

Water inlet valve not opening Valve coil with open winding

Replace valve

Hot gas valve orifice restricted replace hpt gas valve assy

Air vented holes in mold cups plugged Clean out holes

Discharge head pressure too low See incorrect discharge pressure

Unit won't harvest Inoperative P.C. Board Replace P.C. Board

Hot gas valve not opening Valve coil with open winding

Replace valve

Water solenoid valve not opening Valve coil with open winding

Replace valve

Incorrect discharge pressure inoperative condenser sensor replace sensor

Inoperative P.C. Board replace P.C. Board

Water regulating valve misadjusted Adjust its setting stem

Excessive water in unit base Water tubing leaking Check. Tighten or replace.

SERVICE DIAGNOSIS

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Scotsman MC 45 Manual de servicio Pagina 34

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