Low Ice Production - Hoshizaki KM1601SRH350 Service Manual

Problem
[]All ice formed on
evaporator does not
fall into bin in harvest
cycle. (continued)
[3]Other.

3. Low Ice Production

Problem
[1] Freeze cycle time is
long.
Possible Cause
k) Control Board
l) Refrigerant Charge
m)Water Regulating Valve
(water-cooled models)
a) Ice Cube Guide
b) Bin Control Thermostat 1. Bulb out of position.
Possible Cause
a) Inlet Water Valve
b) Float Switch
c) Evaporator
d) Spray Tubes
e) Water Pump
f) Condenser (except
water-cooled models)
g) Refrigerant Charge
h) Hot Gas Valve
i) Expansion Valve
j) Compressor
k) Condenser Water
(water-cooled models)
l) Liquid Line Valve
1. Harvest timer is set
too short.
. Defective.
1. Low Charge
1. Leaking by in harvest. 1. Check and replace.
1. Out of position.
. Bad contacts.
1. Diaphragm does not
close.
1. Float switch does not
move freely.
. Defective switch.
1. Scaled up.
. Damaged.
1. Dirty.
. Out of position.
1. RPM too slow.
1. Air filter or condenser
clogged.
1. Low charge.
1. Open.
1. Bulb loose.
. Operating erratically.
1. Erratic or off.
1. Water regulating valve
set too high.
. Condenser water
pressure too low.
3. Water temperature out
of specification.
1. Erratic, sticking.
34
Remedy
1. Adjust longer, referring
to "II.C.3. Controls and
Adjustments, b) Harvest
Timer."
. See "II.C.4. Control Board
Check Procedure."
1. Check for leaks. Recover,
repair, evacuate, and
recharge.
1. Place in position.
1. Place in position.
. Check for continuity and
replace.
Remedy
1. Check for water leaks with
icemaker off.
1. Clean or replace. See "II.
E. Float Switch."
. Check and replace. See
"II.E. Float Switch."
1. Clean.
. Replace.
1. Clean.
. Place in position.
1. Check and replace.
1. Clean.
1. Check for leaks. Recover,
repair, evacuate, and
recharge.
1. Check and replace.
1. Secure bulb.
. Check and replace.
1. See chart 1. [3].
1. Adjust or replace. See
"V.J. Adjustment of Water
Regulating Valve."
. Check and get
recommended pressure.
3. Correct to specification.
1. Check and replace.