Low Ice Production; Abnormal Ice; Other - Hoshizaki MODULAR CRESCENT CUBER KM-650MAH Service Manual

Problem
[3]Other (continued)

3. Low Ice Production

Problem
[1] Freeze cycle time is
long.
[2] Harvest cycle time is
long.

4. Abnormal Ice

Problem
[1] Small cubes.
[2] Cloudy or irregular
cubes.

5. Other

Problem
[1] Icemaker will not stop
when bin is filled with
ice.
[2] .
Abnormal noise
Possible Cause
g) Water Supply Line
h) Water Filter
Possible Cause
a) See chart 1.[3] and check dirty air filter or condenser, ambient or water
temperature, water pressure, condenser water regulating valve (water-cooled
model), and refrigerant charge.
b) See chart 2.[1] and check float switch, inlet water valve and control board.
c) Check pump, hot gas valve, headmaster (C.P.R.) (remote air-cooled model),
expansion valve, refrigeration check valve, and compressor.
a) See chart 2.[2] and check control board, thermistor, evaporator, ambient and/or
water temperature, water supply line, inlet water valve, line valve, and gas valve.
Possible Cause
a) Ice Cube Guide
b) See chart 1.[5] and check water supply line, inlet water valve, water system,
pump motor, and control board.
c) Pump Out Check Valve 1. Dirty.
a) See chart 2.[1] and 2.[3], and check float switch, inlet water valve, control
board, spray tubes, water system, refrigerant charge, and expansion valve.
b) Spray Guide
c) Water Quality
Possible Cause
a) Bin Control Thermostat 1. Set too cold.
a) Pump Motor
b) Fan Motor
c) Compressor
1. Too small; requires
3/8" OD line dedicated
per machine.
1. Flow rate too small.
1. Out of position.
Circulated water falls
into bin.
1. Dirty.
1. High hardness or
contains impurities.
2. Defective.
1. Bearings worn out.
1. Bearings worn out.
2. Fan blade deformed.
3. Fan blade does not
move freely.
1. Bearings worn out or
cylinder valve broken.
37
Remedy
1. Increase water line size.
1. Replace with filter that has
larger flow rate.
Remedy
Remedy
1. Place in position.
1. Clean.
1. Clean.
1. Install a water softener or
filter.
Remedy
1. Adjust warmer.
2. Replace
1. Replace
1. Replace
2. Replace fan blade.
3. Replace.
1. Replace.