Scotsman AFE400 User Manual page 19

Service Diagnosis: Condition - No Ice Being Produced
STATUS: GEARMOTOR OPERATES, COMPRESSOR DOES NOT
Check the compressor
1. Check the compressor start relay.
2. Check the overload. It could be open due to too much heat or too many amps. Too much heat could b e
too much superheat or not enough refrigerant to cool the compressor. Too many amps could be a relay or
internal compressor problem.
3. Check the start capacitor. if its open, the compressor will not start.
4. Check the windings of the compressor for open windings or shorts to ground.
Replace those items found defective.
STATUS: MAKES ICE, BUT ALSO MAKES EXCESSIVE NOISE.
A. Check if the unit has been cleaned recently, it will make extra noise if minerals have stained th e auger
and/or evaporator. Clean it if in doubt.
B. Check the coupling by greasing it.
C. Check the bearings for wear.
D. Check the evaporator for wear. There are vertical ice guide marks machined into the evaporator's
interior surface, they must be continuous - no horizontal marks are permitted. Vertical sanding of t he
evaporator interior may be required to clean it.
E. Check the gears in the gearmotor, a chipped tooth or worn bearings will cause noise from this are a.
F. Check other sources of noise, such as the fan motor or compressor.
May 1995
Page 19
AFE400