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Inspection:
Photo-Electric Eyes
The photo electric eyes used to “see” the ice build
up in the top of the bin cover must be clean to get
a good “look” at the ice. If clouded by mineral
scale, the eyes will cause the ice machine to shut
off and stay off.
To clean the photo-electric eyes.
1. Remove the top panel.
2. Pull both of the photo-electric eyes out of their
rubber grommets.
3. Wash both eyes with a clean cloth dipped in
Scotsman Ice Machine Scale Remover.
4. Wash the eyes off with clean water.
5. Replace the eyes in the grommets
6. Replace the top panel
Water Level Sensor
The water level sensor may not shut the ice
machine off when the reservoir goes dry if there is
a film of mineral scale on the probe tip.
1. Remove the top panel.
2. Remove the reservoir cover.
3. Pull the water level probe up and out of the
reservoir.
4. Carefully wipe the tip of the probe with a clean
cloth. Ice machine cleaner may be needed.
Note: The tip is made of glass.
5. Reinsert the water level sensor in the reservoir.
6. Replace the reservoir cover and the top panel.
Coupling
Use the grease zerk on the side of the coupling to
add grease once per year.
Bearing and Water Seal
The top bearing should be checked every time the
machine is cleaned. Unscrew the cap and check. A
visual check can determine if corrosion is
occurring. If worn or corroded, have the bearings
and water seal changed.
Also check for water leaks from the bottom of the
evaporator. If there is a leak, the bearings and
water seal must be replaced. The gear reducer will
also need to be checked for water infiltration.
MDT3F & MDT4F User Manual
April 2010
Page 11
Clean Photo-Electric
Eyes
Clean Water Level
Sensor
Water
Reservoir
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