Hoshizaki KM-1301SWH-E Ice Maker User Manual


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3. Low Ice Production
Low Ice Production - Possible Cause
Long Harvest Cycle
1. Evaporator a) Scaled up.
2. Spray Tubes and/or Spray
Guides
a) Dirty.
b) Out of position.
3. Refrigerant Charge a) Low.
4. Water Supply a) Low water pressure.
b) External water lters clogged.
c) Insufficient water line size.
Minimum3/8"nominalID(10mmnominalOD)
d) Too cold.
5. Control Board
See "IV.B.ControlBoardCheck."
a) Thermistor connection loose (K3).
b) Defective.
6. Thermistor
See"IV.E.ThermistorCheck."
a) Loose, disconnected, or defective.
7. Hot Gas Valve a) Erratic or closed.
8. Inlet Water Valve a) Water valve screen clogged.
9. Compressor a) Inefficient or off.
10. Liquid Line Valve (if applicable) a) Erratic or open.
11. Expansion Valve (TXV) a) Defective.
12. Water Regulating Valve
(water-cooled model)
a) Leaking by.
Long Freeze Cycle
1. Evaporator a) Scaled up.
2. Refrigerant Charge a) Low.
3. Air Filter (air-cooled model) a) Clogged.
4. Condenser (air-cooled and
remote air-cooled models)
a) Clogged.
5. Condenser (water-cooled model) a) Water temperature out of specication.
6. Control Board
See "IV.B.ControlBoardCheck."
a) Float switch connection loose (K5).
b) Defective.
7. Hot Gas Valve a) Erratic or open.
8. Inlet Water Valve a) Leaking by.
9. Float Switch
See"IV.D.FloatSwitchCheck
andCleaning."
a) Float does not move freely or defective switch.
10. Compressor a) Inefficient or off.
11. Pump Motor a) RPM too slow.
12. Liquid Line Valve (if applicable) a) Erratic or closed.
13. Expansion Valve (TXV) a) Bulb loose.
b) Defective.
14. Headmaster (C.P.R.) (remote
condenser unit)
a) Not bypassing.
15. Water Regulating Valve
(water-cooled model)
See"IV.F.AdjustmentofWater
RegulatingValve."
a) Out of adjustment.
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