Scotsman MF 26 Service Manual page 39

Page 40
SERVICE DIAGNOSIS
SYMPTON
Wet ice
Machine runs but makes no ice
Water leaks
Excessive noise or chattering
Gear motor noise
Shortage of water
POSSIBLE CAUSE
Ambient temperature too high
Under or overcharge of refrigerant
High water level in the freezer
Faulty compressor
Worn out of the auger
Water not entering in the freezer
Drive motor or gear stripped
Moisture in the system
Water seal leaking
Water feed line to freezer leaking
Float valve not closing
Spout leaking
Mineral or scale deposit on auger
and inner freezer walls
Low suction pressure
Water feed line to freezer clogged
Low water level into freezer
Worn freezer bearings
Worn rotor bearings
Shortage or poor lubricant in gear
case
Gear case bearings and racers
worn out
Strainer at water inlet fitting
clogged
Float reservoir water nozzle
clogged-up
SUGGESTED CORRECTION
Move unit to cooler location
Recharge with correct quantity
Lower to approx. 20 mm below ice
spout
Replace
Replace
Air look in feed line to freezer. Vent it
Clogged feed line to freezer. Clean it
Check repair or replace
Purge, replace drier and re-charge
Replace water seal
Check and fasten hose clamp
Check and adjust float valve setting
screw
Tighten screws holding the spout
Remove and manually polish auger
and inner walls of freezer barrel using
emery paper
Add refrigerant to rise suction
pressure
Vent and clean it
Adjust to approx. 20 mm below ice
spout
Check and replace
Check and replace
Check for proper lubr. opening gear
case. Top of gears must be covered
with lubr.
Check and replace worn parts
Remove strainer and clean
Remove float valve and clean nozzle