Manitowoc QF0400 Manuel D'installation, D'utilisation Et D'entretien page 19

Checklist
If a problem arises during operation of your ice machine, follow the checklist below before calling for service. Routine
adjustments and maintenance procedures are not covered by the warranty.
Problem
Ice machine does not operate.
Gear Motor runs but
compressor will not start.
Ice machine stops and can be
restarted by moving the toggle
switch to OFF and back to ICE.
Ice quality is poor.
Low ice capacity.
Part Number 000007651 05/10
Section 5
Customer Support
Possible Cause
No electrical power to the ice machine.
Control Board fuse open.
ICE/OFF/CLEAN toggle switch set improperly.
8 minute lockout has not expired.
Bin level sensor is disconnected or is
contacting the ice.
High Pressure Control is open.
Water reservoir is empty. (Water must contact
the water level probe to start the compressor.)
Water level probes out of position.
The SafeGuard feature is stopping the ice
machine.
Poor incoming water quality.
Water filtration is poor.
Incoming water temperature is above 90
°
(32 C).
Water pressure is low.
Water softener is working improperly (if
applicable).
Water float valve screen is dirty.
Incoming water supply is shut-off.
Water dump valve is leaking.
Water Pressure is low.
Incoming water temperature is above 90
°
(32 C).
Water float valve stuck open or leaking.
Objects stacked around ice machine, blocking
airflow to condenser.
High air temperature around ice machine.
Inadequate clearance around the ice machine. Provide adequate clearance.
The condenser is dirty.
To Correct
Replace the fuse/reset the breaker/turn on
main power switch/plug cord into receptacle.
Move toggle switch to the ICE position.
Bin level light will flash to indicate 8 minute
lockout has not expired. Refer to Sequence of
Operation.
Connect bin level sensor or remove ice
contacting probe.
Clean condenser, check fan motor, check high
pressure control operation.
Open water service valve or clean float valve
screen.
Correct water level probe position.
Refer to "SafeGuard Feature" in this section.
Contact a qualified service company to test the
quality of the incoming water and check filter.
Replace filter.
°
F Correct water temperature. (Verify check/
mixing valves in other equipment are working
properly.) Connect the ice machine to a cold
water supply.
Water pressure must remain between 20 and
80 psig.
Repair the water softener.
Remove and clean the filter screen.
Open the water service valve.
Clean the dump valve.
Water pressure must remain between 20 and
80 psig (138 and 552 kPA).
°
F Correct water temperature. (Verify check/
mixing valves in other equipment is working
properly.)
Remove the float valve and clean it.
Remove items blocking airflow.
Air temperature must not exceed 110
°
(43 C).
Clean the condenser.
°
F
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