Scotsman DXN 100 Service Manual page 21

Page 21
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
Ambinet temperature too high
High water level in the freezer
Faulty compressor
Water not entering in the freezer
Gear stripped
Moisture in the system
Water seal leaking
Water feed line to freezer leaking
Float valve not closing
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 rotor bearings
Shortage or poor lubricant in gear
case
Gear case bearings and gear
racers worn out
Strainer at water inlet fitting clogged
Float reservoir water nozzle
clogged-up
SUGGESTED CORRECTION
Move unit to cooler location
Lower to approx. 20 mm below
ice spout
Replace
Air look in feed line to freezer.
Clogged feed line to freezer. Clean it
Check and repair
Purge, replace drier and re-charge
Replace water seal
Check and fasten hose clamp
Check and adjust float valve
setting screw
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 for proper lubricant opening
gear case.
Top of gears must be covered
with lubricant
Check and replace worn parts
Remove strainer and clean
Remove float valve and clean
nozzle
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