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NME454, 654 & FME504, 804
January 2007
Page 23
SERVICE DIAGNOSIS
Symptom Possible Cause Probable Correction
Water Leak Drain plugged up Clean out drain
Tubing cracked Replace tubing
Condensation on drain tubing Insulate tubing
Hose off Reattach hose
Reservoir cover off Return cover to reservoir
Reservoir cracked Replace reservoir
Evaporator water seal leaks 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.
Excessive water use Water cooled model, water regulating
valve not adjusted properly.
Adjust to 245 PSIG discharge
pressure
Reservoir float valve leaks thru Replace float valve or seat
Water cooled model, overcharged
with refrigerant
Recover and weigh refrigerant. Weigh
in correct charge.
Water cooled model, condenser
coated with minerals
Acid clean water cooled condenser.
Excessive ice meltage Bin drain clogged Clean out bin drain.
Improper installation of drains, they
are connected.
Drains must be separate.
Poor fit between bin door and door
frame
Adjust or replace
Machine makes too much noise Evaporator coated internally with
minerals
Clean with Scotsman Ice Machine
Cleaner
Motor bearings dry Oil or replace motor