6-2
Section 6
Service
Component Specifications and Diagnostics
MAIN FUSE
Function
The control board fuse stops ice machine operation
if electrical components fail causing high amp draw.
Specifications
The main fuse is 250 Volt, 7 amp.
Check Procedure
WARNING
High (line) voltage is applied to the control board
(terminals #55 and #56) at all times. Removing
the control board fuse or moving the toggle
switch to OFF will not remove the power
supplied to the control board.
1.
If the bin switch light is on with the water
curtain closed, the fuse is good.
WARNING
Disconnect electrical power to the entire ice
machine before proceeding.
2.
Remove the fuse. Check the resistance across
the fuse with an ohmmeter.
Reading
Result
Open (OL)
Replace fuse
Closed (O)
Fuse is good
BIN SWITCH
Function
Bin switch operation is controlled by movement of
the water curtain. 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 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 water
curtain and holds it open. After the water curtain
is held open 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 water curtain. As
the water curtain swings back to the operating
position, the bin switch closes and the ice
machine restarts.
Important
The water curtain must be ON (bin switch closed)
to start ice making.
Specifications
The bin switch is a magnetically operated reed
switch. The magnet is attached to the lower right
corner of the water curtain. The switch is attached
to the evaporator mounting bracket.
The bin switch is connected to a varying D.C.
voltage circuit. (Voltage does not remain constant.)
NOTE: Because of a wide variation in D.C. voltage,
it is not recommended that a voltmeter be used to
check bin switch operation.
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