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Flake Ice Machines Electrical System
Page G4
Mechanical Bin Control
The mechanical bin control is located in the top panel of the ice bin on the EF Series and on
the top of the down chute on the EMF Series. When ice fills the down chute on the EMF
Series units, or ice fills the bin on EF Series units a rubber diaphragm pushes up against a
switch.
To check the bin switch, push up on the diaphragm or switch arm raising it approximately 1/8
inch. This movement should actuate (open) the switch. The switch should close when
returned to the normal position. The switch can be adjusted by loosening the adjusting
screws and moving it to the proper position.
Important! The secondary bin switch should only be utilized as a safety. If the machine is
shutting off on the secondary control, the primary control should be adjusted.
Auger Motor Relay
The auger motor relay is used on modular models to energize the auger motor, preventing
excessive current through the bin control. When power is supplied to the coil of the relay, the
normally open contacts close, energizing the auger motor.
Auger Motor
The auger drive motor is used to turn the gear reducer via a V-Belt. The auger motor should
turn counter clockwise when facing the pulley end of the motor.
The auger motor uses an internal overload
protector, which opens if the motor is under
excessive load. If the overload protector
opens, the entire machine will shut off and
will restart when the overload cools and
resets. Problems with the drive system such
as a dirty evaporator or bad bearings are
usually the cause of the overload protector
tripping. This can be checked by reading the
auger motor amp draw. A fluctuation of more
than 4/10 of an amp indicates there may be a
problem in the drive system. See the Troubleshooting Trees on Page C9. Note: When
replacing an auger motor, make sure the new motor is wired properly.