Abnormal Ice - Hoshizaki KML-351MAH Service Manual

Problem
[2] Harvest cycle time is
long. (continued)

4. Abnormal Ice

Problem
[1] Small cubes.
[2] Cloudy or irregular
cubes.
Possible Cause
d) Inlet Water Valve
e) Evaporator
f) Hot Gas Valve
g) Expansion Valve
h) Water Regulating Valve
(water-cooled model
only)
i) Liquid Line Valve (if
applicable)
Possible Cause
a) Drain Valve
b) Ice Cube Guide
c) Water System
d) Inlet Water Valve
e) Pump Motor
f) Control Board
a) Evaporator
b) Water System
c) Spray Guide
1. Clogged.
1. Scaled up.
2. Damaged.
1. Does not open, or
opens partially.
1. Wide open in harvest. 1. Check and replace.
2. Bulb loose.
1. Open during harvest.
1. Open during harvest
cycle.
1. Dirty and leaking by.
1. Out of position.
Circulated water falls
into bin.
1. Water supply line too
small; requires 3/8"
OD line dedicated per
unit.
2. Water filter clogged or
flow rate too small.
1. Dirty mesh filter or
orifice.
1. RPM too slow.
1. Defective.
1. Frozen up.
2. Scaled up.
3. Damaged.
1. Water supply line too
small; requires 3/8"
OD line dedicated per
unit.
2. Water filter clogged or
flow rate too small.
3. High hardness or
contains impurities.
1. Dirty.
39
Remedy
1. Clean or replace.
1. Clean.
2. Replaced.
1. Check and replace.
2. Secure bulb.
1. Adjust or replace. See
"V.I. Adjustment of Water
Regulating Valve - Water-
Cooled Model Only."
1. Check and replace.
Remedy
1. Clean or replace.
1. Place in position.
1. Increase water line size.
2. Replace filter or install a
higher flow rate filter.
1. Clean.
1. See chart 1.[5].
1. See "II.C.4. Control Board
Check Procedure."
1. See chart 2.
2. Clean
3. Replace.
1. Increase water line size.
2. Replace filter or install a
higher flow rate filter.
3. Install a water softener or
filter.
1. Clean.