Scotsman FME804R Service Manual page 27

SERVICE DIAGNOSIS:
No ice, auger motor is turning
Symptom
Unit makes ice, but very slowly
Water leak
Excessive ice meltage
Machine makes too much noise
Compressor contactor coil is open
Compressor will not start
Circuit board relay will not close
Pump down pressure switch contacts
do not close, liquid line valve open
and suction pressure high
Possible Cause
High discharge pressure because of a
dirty condenser coil
Auger and evaporator are coated with
mineral scale
Low refrigerant charge
Ice storage bin drain restricted
Tubing cracked
Condensation on drain tubing
Hose off
Reservoir cover off
Reservoir cracked
Evaporator water seal leaks
Bin drain clogged
Poor fit between bin door and door
frame
Evaporator coated internally with
minerals
Motor bearings dry
January 2000
Page 27
NME654R & FME804R
Check / replace contactor
Check start capacitor
Check start relay
Check compressor windings
Check / replace board
Check pump down switch contacts
Probable Correction
Clean the condenser
Clean the water system
Locate leak. Recover refrigerant,
repair leak, replace dryer, evacuate
and weigh in the nameplate charge.
Clean out drain
Replace tubing
Insulate tubing
Re-attach hose
Return cover to reservoir
Replace reservoir
Check base of evaporator & drip pan.
If the seal leaks, shut off the water,
remove the auger, replace the water
seal. Check gear motor for water
infiltration.
Clean out bin drain
Adjust or replace
Clean with Scotsman Ice Machine
Cleaner
Oil or replace motor