Low Ice Production - Hoshizaki KM-1301SAH/3 Service Manual

Problem
[3]Other.

3. Low Ice Production

Problem
[1] Freeze cycle time is
long.
Possible Cause
a) Ice Cube Guide
b) Thermostatic Bin
Control
Possible Cause
a) Inlet Water Valve
b) Float Switch
c) Evaporator
d) Spray Tubes
e) Water Pump
f) Condenser (except
water-cooled model)
g) Refrigerant Charge
h) Hot Gas Valve
i) Expansion Valve
j) Compressor
k) Condenser Water
(water-cooled model)
l) Liquid Line Valve
m)Headmaster (C.P.R.)
(remote condenser
unit)
n) Control Board
1. Out of position.
1. Bulb out of position.
2. Bad contacts.
1. Diaphragm does not
close.
1. Float switch does
not move freely or
defective switch.
1. Scaled up.
2. Damaged.
1. Dirty.
2. Out of position.
1. RPM too slow.
1. Air filter or condenser
clogged.
1. Low charge.
1. Open.
1. Bulb loose.
2. Operating erratically.
1. Erratic or off.
1. Water regulating valve
set too high.
2. Condenser water
pressure too low.
3. Water temperature out
of specification.
1. Erratic, sticking.
1. Bypassing.
1. Float switch
connection loose (K5).
2. Defective.
62
Remedy
1. Place in position.
1. Place in position.
2. See "IV.C. Bin Control
Check."
Remedy
1. Check for water leaks with
icemaker off.
1. Clean or replace. See "IV.
D. Float Switch Check and
Cleaning."
1. Clean.
2. Replace.
1. Clean.
2. Place in position.
1. See chart 1.[5].
1. Clean.
1. Check for leaks. Recover,
repair, evacuate, and
recharge.
1. Check and replace.
1. Secure bulb.
2. Check and replace.
1. See chart 1.[3].
1. Adjust or replace. See
"V.J. Adjustment of Water
Regulating Valve."
2. Check and get
recommended pressure.
3. Correct to specification.
1. Check and replace.
1. Replace.
1. Check and reconnect.
2. See "IV.B. Control Board
Check."