Scotsman CMS1402 Manual de servicio descargar pdf (Pagina 21)

SERVICE DIAGNOSIS: Refrigeration and/or Mechanical

SYMPTOM POSSIBLE CAUSE PROBABLE FIX

Poor harvest Too short harvest time Check and adjust harvest time

Restriction of incoming water Check supply, filter, strainer and valve

Hot gas valve does not open Check for power to the coil, check for

not opening, replace

Not enough refrigerant Locate leak, repair, replace drier,

evacuate and weigh in nameplate

charge.

Cube size too small Adjust with cube size control

Unit cycles off during freeze or

harvest

Hi temperature switch opens and

closes

Hot gas valve leaks thru, replace it

Loose connection on PC board Check and replace P C board

Low capacity High head pressure, from dirty

condenser, faulty fan motor, or fan

control

Clean condenser, repair fan motor or

control

Non condensable gas in the system Purge system, evacuate and weigh in

nameplate charge

Poor air circulation or extreme hot

location

Relocate the cabinet; or provide

ventilation

Overcharge of refrigerant Evacuate and weigh in nameplate

charge

Cube size too big, unit runs out of

water before harvest

Adjust cube size control

Inlet water valve leaks thru Replace valve

Hot gas valve leaks thru At the end of the freeze cycle there

should be frost on the evaporator end

of the hot gas tubes, if not replace the

hot gas valve

Unit runs out of water Reservoir leaks Repair leak

Inlet water valve restricted Clean or replace valve

Short harvest cycle Adjust timer

Water pressure too low Check supply

Unit shuts off before bin is full Something blocking transducer Remove blockage

Transducer is wet Remove transducerand shake screen

dry.

Control set on partial Set control to full.

Unit does not shut off Ice level control failiure Check circuit, see next page.

Timer stuck; does not turn Replace timer

CMS1402

September 1993

Page 21

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