Scotsman MDT2 - Manual (Page 20)

SERVICE DIAGNOSIS
SYMPTOM POSSIBLE CAUSE SUGGESTED CORRECTION
Wet ice Ambient temperature too high Move unit to cooler location
High water level in the freezer Lower to approx. 20mm below ice spout
Faulty compressor Replace
Machine runs but makes no ice Water not entering in the freezer Air lock in feed line to freezer.
Clogged feed line to freezer. Clean it
Gear stripped Check and repair
Moisture in the system Purge, replace drier and re-charge
Water leaks Water seal leaking Replace water seal
Water feed line to freezer leaking Check and fasten hose clamp
Float valve not closing Check and adjust float valve setting
screw
Excessive noise or chattering Mineral or scale deposit on auger Remove and manually polish auger and
inner freezer walls and inner walls of
freezer barrel using emery paper
Low suction pressure Add refrigerant to increase suction
pressure
Water feed line to freezer clogged Vent and clean it
Low water level into freezer Adjust to approx. 20 mm below ice
spout
Gear motor noise Worn rotor bearings Check and replace
Shortage or poor lubricant in gear case Check for proper lubricant level by
opening gear case.
Top of gears must be covered with
lubricant
Gear case bearings and gear racers worn
out
Check and replace worn parts
Shortage of water Strainer at water inlet fitting clogged Remove strainer and clean
Float reservoir water nozzle clogged-up
nozzle
Remove float valve and clean
MDT2
May 2002
Page 20