Scotsman HID312 Service Manual - Manual (Page 30)

HID312, HID525, HID540
Service Manual
April 2015
Page 30
Test Procedures Auger and Gear Reducer
Auger
The auger must be clean and undamaged to work
properly.
Remove it from the evaporator to confirm.
Note: A wet auger will appear clean - dry it to check
for scale.
Damaged auger flight edges are not repairable and
the auger must be then be replaced.
Auger Motor
The auger motor is a PSC motor with a capacitor. If
the motor will not start, check first for voltage to the
motor.
If there is full voltage to the motor, check the capacitor
and motor windings, replace the motor if the winding
is open. Replace the capacitor if it is damaged, open
or weak.
Note: The replacement motor is supplied attached
to a gear reducer cover. Remove the motor from the
cover and attach it to the gear reducer.
A reversed motor code (1) is a strong symptom of a
motor that should be replaced.
Gear Reducer
The gear reducer is a sealed component. No gears or
shaft bearings are available. A gear reducer without
motor is available.
A properly operating gear reducer will operate quietly
and draw a consistent amount of amps. It will not leak
lubricant. Oil discharge is a strong indicator of water
infiltration and is cause for replacement.
High amp draw could be caused by scale build up in
the evaporator. Clean it first, then check amp draw.
Confirm the top and lower bearings are not seized or
rough.
A motor that rotates but the output shaft does not turn
indicates a stripped gear and is cause for the gear
reducer section to be replaced.
Clean, Undamaged
Auger
Scale Covered
Auger