Cornelius 700 - Series - Manual (Page 18)

Continuous Flow Icemaker Service Manual
Publication Number: 630460174SER - 14 - © 2004-2005, IMI Cornelius Inc.
C
ONDENSER
M
ODULATING
V
ALVE
R
EMOVAL
1. Disconnect power to unit, then shut off water supply to condenser and evacuate refrigerant from
system.
2. Remove inlet water line from Condenser Modulating Valve. Also remove tube from high side
refrigerant line.
3. Remove Condenser Modulating Valve and bracket from unit.
4. Remove valve from bracket.
5. Replace Condenser Modulating Valve by reversing Steps 2 through 4. Then pull system into
vacuum.
6. Charge unit with proper amount of refrigeration.
7. Turn power and water on to unit.
8. With unit running, adjust modulating valve to proper setting.
9. Go through a complete system check.
GEARMOTOR
OVERLOAD TRIPPED
Check water level control
and evaporator water tube
for line build-up restrictions.
Clear ice from
evaporator and
auger before
resetting overload.
CLEAN
CAUTION
See Instructions.
Overload
hot try
again.
YES
NO
Reset overload.
Resets but
motor does
not run.
Will not
Reset.
Icemaker
runs.
IMPORTANT
Will not
reset.
Replace
overload.
Resets but
motor does
not run.
Check
gearmotor
circuits.
Short run. Trips
again in 2
minutes. Check
gearmotor circuits.
Icemaker runs when
reset but problem has
not been found.
Continue checking for
overload as follows to
guard against future
problems.
OVERLOAD GUIDE
ELECTRICAL:
High or low voltage. Weak power lines can cause overloads on icemakers restarts.
High running current (2.4amps or above). Check motor circuits and start relay.
Auger delay failed.
ICEMAKER
Mechanical parts worn. Scored evaporator or auger. Worn thrust bearing.
Icemaker not turning off. Failed ice level control.
Over compression. Low water inlet temperature. Restrictions in water line from reservoir.
REFRIGERANT
Contaminated charge or bad compressor.
Low charge or gas leak.
Low suction pressure. Improper expansion valve. Sensing bulb location or insulation
and/or defective expansion valve.