Manitowoc Ice QM45 Series Operational Checks, Siphon System Check, Water Level Check

Ice Machine Operation Section 3

Operational Checks

GENERAL

Your Manitowoc ice machine was factory-operated and adjusted before shipment. Normally, a newly installed ice machine does not require any adjustment.

To ensure proper operation, always follow these Operational Checks when starting the ice machine:

•for the first time

•after a prolonged out of service period

•after cleaning and sanitizing

Routine adjustments and maintenance procedures outlined in this manual are not covered by the warranty.

SIPHON SYSTEM

To reduce mineral build-up and cleaning frequency, the water in the sump trough must be purged during each harvest cycle.

When the water pump de-energizes the level in the water trough rises above the standpipe starting a siphon action. The siphon action stops when the water level in the sump trough drops below the siphon cap. When the siphon action stops, the float valve refills the water trough to the correct level.

Siphon System Check

Follow steps 1 through 6 under water level check.

	SIPHON
WATER LEVEL	CAP

STANDPIPE

DRAIN

SV1689-2

WATER LEVEL CHECK

Check the water level while the ice machine is in the clean mode and the water pump is running. The correct water level is 1/4" (6.3mm) to 3/8″ (9.5mm) below the top of the standpipe.

SIPHON CAP

1/4” TO 3/8″(6.3 TO 9.5 MM) BELOW TOP OF

STANDPIPE

SV1689-2

Water Level

The float valve is factory-set for the proper water level. If adjustments are necessary:

1.Verify the ice machine is level (see page 2-3).

2.Remove the siphon cap from the standpipe.

3.Place the main ICE/OFF/WASH toggle switch to the WASH position, and wait until the float valve stops adding water.

4.Adjust the water level to 1/4" (6.3mm) to 3/8" (9.5mm) below the standpipe:

A Loosen the two screws on the float valve bracket.

B Raise or lower the float valve assembly as necessary, then tighten the screws.

5.Move the main ICE/OFF/ WASH toggle switch to the OFF position. The water level in the trough will rise above the standpipe and run down the drain.

6.Replace the siphon cap on the standpipe, and verify water level and siphon action by repeating steps 3 through 5.

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