Hoshizaki F-800MAH, Service Manual

Page: 36 / 59

36
PROBLEM POSSIBLE CAUSE REMEDY
[4] Water has been
supplied, Fan Motor
starts, but Gear
Motor and
Compressor will not
start.
a) Gear Motor Fuse
(BUSSMAN GMD
1.5A) 1. Blown Fuse. 1. See "3. [3]." Find out
the cause and replace
the Fuse.
b) Thermal Protector
(Gear Motor) 1. Bad contacts. 1. Check for continuity
and replace.
[5] Gear Motor and
Compressor start
but operate
intermittently.
a) Pressure Switch 1. Dirty Air Filter or
Condenser. 1. Clean.
2. Ambient or
condenser water
temperature too
warm. 2. Get cooler.
3. Condenser water
pressure too low or
off. (Water-cooled
model only) 3. Check and get
recommended
pressure.
4. Water Regulating
Valve set too high.
(Water-cooled model
only) 4. Adjust it lower.
5. Fan not rotating. 5. See "3. [1] a) Fan
Motor."
6. Refrigerant
overcharged. 6. Recharge.
7. Refrigerant line or
components
plugged. 7. Clean and replace
drier.
8. Bad contacts. 8. Check for continuity
and replace.
9. Loose connections. 9. Tighten.
[6] Gear Motor starts,
but Compressor will
not start or operates
intermittently.
a) X2 Relay on Control
Timer 1. Bad contacts. 1. Replace.Check for
continuity and replace.
2. Coil winding opened. 2. Replace Timer.
b) Starter 1. Bad contacts. 1. Check for continuity
and replace.
2. Coil winding opened. 2. Replace.
3. Loose Connections. 3. Tighten.
c) Start Capacitor or
Run Capacitor 1. Defective. 1. Replace.
d) Compressor 1. Loose connections. 1. Tighten.
2. Motor winding
opened or grounded. 2. Replace.
3. Motor Protector
tripped. 3. Find out the cause of
overheat or
overcurrent.
e) Power Supply 1. Circuit Ampacity too
low. 1. Install a larger-sized
conductor.
[7] Gear Motor and
Compressor start,
but no ice is
produced.
a) Refrigerant Line 1. Gas leaks. 1. Check for leaks with a
leak detector. Reweld
leak, replace drier and
charge with
refrigerant. The
amount of refrigerant
is marked on
Nameplate or Label.
2. refrigerant line
clogged. 2. Replace the clogged
component.