Manitowoc STH042 4/16, Technician'S Handbook

Page: 100 / 146

100 Part Number STH042 4/16
Bin Switch
Function
Bin switch operation is controlled by the movement of
the ice damper. The bin switch has two main functions:
1. Terminating the harvest cycle and returning the ice
machine to the freeze cycle.
This occurs when the bin switch is opened and
closed again within 7 seconds of opening during the
harvest cycle.
2. Automatic ice machine shut-off.
If the storage bin is full at the end of a harvest cycle,
the sheet of cubes fails to clear the ice damper and
holds it down. After the ice damper is held down for
7 seconds, the ice machine shuts off.
The ice machine remains off until enough ice is
removed from the storage bin to allow the sheet
of cubes to drop clear of the ice damper. As the ice
damper swings back to the operating position, the
bin switch closes and the ice machine restarts.
mportant
The ice damper must be up (bin switch closed) to
start ice making.
Check Procedure
1. Press the power button to OFF.
2. Watch the curtain light on the control board.
3. Move the ice damper upward, toward the
evaporator. The bin switch must close. The curtain
light “on” indicates the bin switch has closed
properly.
4. Move the ice damper away from the evaporator. The
bin switch must open. The curtain light “off” indicates
the bin switch has opened properly.