Manitowoc SN12 Specifications download pdf (Page 29)

Section 5 Before Calling For Service

Part Number 000005544 12/09 5-3

SafeGuard Modes

NO WATER

During the Freeze cycle if the water sensing switch

opens or remains open for more than 20 continuous

seconds,

1. The ice machine will de-energize the compressor

and gear motor immediately

2. Continuously flash the control board water OK light

3. Initiate a 15 minute Standby Mode

After the 15 minute standby the ice machine will check

the status of the water level sensor.

WATER LEVEL SENSOR CLOSED:

The ice machine will initiate a startup sequence.

WATER LEVEL SENSOR OPEN:

The ice machine will wait for the water level sensor to

close.

INDICATOR LIGHT

Before 48 hours have elapsed:

After a Standby Mode has been initiated the water level

light will flash anytime the toggle switch is placed in the

OFF position.

After 48 hours have elapsed:

The SafeGuard will be automatically erased from

memory and the water level will not flash.

No Water SafeGuard Checklist

Possible Problem List Corrective Action List

No water Restore water supply.

Water float valve screen blocked Clean screen.

Water float valve improperly adjusted Adjust valve (see Water level check).

Dump valve leaking Repair or replace dump valve.

Water sensing switch disconnected or removed Connect or correctly position sensor

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Manitowoc SN12 Specifications Page 29