Hoshizaki KM-1301SAJ/3 Service Manual page 36

Low Ice Production - Possible Cause
1. Evaporator
2. Float Switch
See "II.F. Float Switch Check and
Cleaning"
3. Inlet Water Valve
4. Hot Gas Valve
5. Condenser
6. Control Board
See "II.D. Control Board Check"
7. Refrigerant Charge
8. Thermostatic Expansion Valve
9. Compressor
10. Pump Motor
11. Liquid Line Valve
12. Headmaster (C.P.R.)
(remote models)
3. Freeze-Up
Defrost and clean the icemaker prior to diagnosing freeze-up. Fill out a freeze-up checklist.
See "II.J. Freeze Up Check List," the Hoshizaki America Technician's Pocket Guide, or
contact your local distributor for a copy of the freeze-up checklist.
Freeze-Up - Possible Cause
1. Evaporator
2. Cube Guides
3. Spray Tubes and/or Spray
Guides
4. Water Supply
5. Inlet Water Valve
6. Float Switch
See "II.F. Float Switch Check and
Cleaning"
7. Refrigerant Charge
Long Freeze Cycle
a) Scaled up, dirty.
a) Scaled up, dirty.
b) Float sticking.
c) Defective switch.
a) Leaking by.
a) Erratic or open.
a) Clogged.
a) Float switch connection loose (K5).
b) Defective.
a) Low.
a) Bulb loose.
b) Defective.
a) Inefficient or off.
a) RPM too slow.
a) Erratic or restricted.
a) Not bypassing.
Harvest Cycle
a) Scaled up.
b) Damaged.
a) Out of position.
b) Damaged.
a) Dirty.
b) Out of position.
a) Low water pressure.
b) External water filters clogged.
c) Insufficient water line size.
Minimum 3/8" Nominal ID (10 mm Nominal OD in the EU) copper
water tubing or equivalent.
a) Screen or orifice clogged.
b) Defective.
a) Dirty, sticking.
b) Defective.
a) Low.
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