Scotsman CU0715 Manual de servicio descargar pdf (Pagina 24)

August 2013

Page 23

Service Manual for Models CU0415, CU0715 and CU0920

Problem Possible Cause Probable Correction

Makes ice but makes blocks or shells Ice bridge wrong size Adjust to proper size

Evaporator thermistor out of

calibration, adjustment erratic

Check thermistor resistance to chart,

replace if incorrect

Poor thermal contact of evaporator

thermistor to suction line

Check clip holding probe, must have metal-

to-metal contact and covered with insulation

Thermistor failure, unit operating

on timed cycles

Check controller for all green lights blinking,

if all blinking change thermistor set.

Makes ice but does not hold bridge

setting, gradually increases over time

Evaporator temperature taking

longer to get to cut in point

Refrigerant leak, check refrigeration

system.

Makesicebutdoesnotllthebin Bin thermostat opens and shuts

machine off before bin is full

Unit in cold room, check conditions.

Thermostat out of calibration, replace

Unit at high altitude, adjust compensation

screw

Unit makes ice but it is wet Normal Fresh ice will be wet

Water dripping / spraying on it Check curtain, may be torn or not in

position

Checkthatcubedeectoriscorrectly

positioned

Makes ice but is slow, cannot keep

Air cooled condenser is dirty Cleancondenserns

Too much water Slight leak from inlet water solenoid valve,

check/replace valve

Airowtocabinetrestricted Conrmnothingblockingfrontlouvers;unit

cannot operate in a closet

Room air hot Hot air slows ice making and increases bin

meltage

Restricted drain Water in bottom of bin melts ice, correct

drain so all water drains including the water

from harvest cycle

Ice on top of evaporator Drain slots plugged, clean water system

Slush in reservoir Do controller self check

Makes ice but is loud Some noise is normal, the fan,

pump and compressor all produce

sound

Check for fan blade touching debris or

shroud.

Check that all panel fasteners are on tight.

Identify loud part and replace it.

Door binds opening or closing Roller or pin is broken Check / replace door roller

Binoverlls Bin thermostat does not open Replace thermostat

Service Diagnosis

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Scotsman CU0715 Manual de servicio Pagina 24

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