102 Part Number STH042 7/15
Float Switch
Function
Open and close to indicate to the control board the level
of water in the water trough.
Specifications
Normally closed, float operated magnetic reed switch.
The float switch contacts are closed in the down position.
When water raises the float to the up position the magnet
in the float opens the contacts.
Check Procedure
The ice machine uses two float switches.
Ice Thickness Float -Indicates the water level has been
reached.
Harvest Float - Indicates a harvest cycle needs to be
initiated.
Initial testing can be performed by viewing the control
board light(s) while raising and lowering the float. The
corresponding control board light must turn on and off
when the float is raised and lowered.
Harvest Float switch:
A. The light must be on in the down position.
B. The light must be off in the up position.
Ice Thickness Float Switch:
A. The light must be off in the down position.
B. The light must be on in the up position.
If the control board light does not respond to the float
proceed with step 1 below.
1. Disconnect power to the ice machine, pull the wire
connector for the float switch through the bulkhead
and disconnect.
2. Attach an ohm meter lead to each float switch wire.
3. Place the float in the down position - The float switch
must be closed.
4. Place the float in the up position - The float switch
must be open.
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