Manitowoc QD1092N Specifications download pdf (Page 43)

Section 5 Before Calling for Service

Part Number 000001759 5-1

Section 5

Before Calling for Service

Checklist

If a problem arises during operation of your ice machine, follow the checklist below before calling service. Routine

adjustments and maintenance procedures are not covered by the warranty.

Problem Possible Cause To Correct

Ice machine does not operate. No electrical power to the ice machine

and/or condensing unit.

Replace the fuse/reset the breaker/turn

on the main switch.

High pressure cutout tripping. Clean condenser coil. (See Section 4)

ICE/OFF/CLEAN toggle switch set

improperly.

Move the toggle switch to the ICE

position.

Water curtain stuck open. Water curtain must be installed and

swinging freely. (See Section 4)

Remote receiver service valve is closed. Open the valve (See Section 2)

Ice machine stops, and can be restarted

by moving the toggle switch to OFF and

back to ICE.

Safety limit feature stopping the ice

machine.

Refer to “Safety Limit Feature” on the

next page.

Ice machine does not release ice or is

slow to harvest.

Ice machine is dirty. Clean and sanitize the ice machine.

(See Section 4)

Ice machine is not level. Level the ice machine. (See Section 2)

Low air temperature around ice machine

head section.

Air temperature must be at least 1.6°C.

Fan cycling control does not de-energize

condenser fan motor.

Verify pressure is below cut-out setpoint,

replace fan cycling control.

Ice machine does not cycle into harvest

mode.

The six-minute freeze time lock-in has

not expired yet.

Wait for the freeze lock-in to expire.

Ice thickness probe is dirty. Clean and sanitize the ice machine.

(See Section 4)

Ice thickness probe is disconnected. Connect the wire.

Ice thickness probe is out of adjustment. Adjust the ice thickness probe.

(See Section 3)

Uneven ice fill (thin at the top of

evaporator).

Verify sufficient water level in sump

trough. Contact a qualified service

company to check refrigeration system.

Ice quality is poor (soft or not clear). Poor incoming water quality. Contact a qualified service company to

test the quality of the incoming water and

make appropriate filter

recommendations.

Water filtration is poor. Replace the filter.

Ice machine is dirty. Clean and sanitize the ice machine.

(See Section 4)

Water dump valve is not working. Disassemble and clean the water dump

valve. (See Section 4)

Water softener is working improperly (if

applicable).

Repair the water softener.

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Manitowoc QD1092N Specifications Page 43

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