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CME1856W
Additional Maintenance: Ice Sensors, Condenser
The ice sensors use a system of infrared emitting
and receiving components to sense the build up of
ice in the bin. They are located at the bottom of the
ice outlet port. They must be free of mineral build
up to function properly. To check:
1. Remove front panels.
2. Push and release the harvest button.
3. Wait for the machine to stop.
4. Remove the evaporator cover.
5. Locate the front ice sensor.
Push the sensor from the front (at the wire area) to
the back until it releases from the holder.
6. Locate the back ice sensor Pull on the
rectangular tab to release it from its mounted
position.
7. Examine the bottom of the brackets, there are
two sensors in each bracket, check that they are
clear of mineral build up. They may be wiped clean
with ice machine cleaner to assist in removal of the
build up.
Note: Do NOT use abrasive materials or cleaner
on the ice sensor lenses. A soft toothbrush works
well to get into the hard to reach spots.
8. Reverse steps 1-6 to reassemble.
To Clean the Water Cooled Condenser
Under typical water conditions the condenser will
not require any maintenance. However, if the
water supply contains a large amount of minerals,
the water cooled condenser may become coated
internally with scale. The symptom of a dirty
water cooled condenser is abnormally high
water use.
Do NOT perform this procedure too frequently or
on a clean condenser. Premature failure of the
condenser may occur.
1. Remove left side and front panels.
2. Shut machine off.
3. Shut water supply to condenser off.
4. Disconnect condenser water inlet from water
regulating valve.
5. Rig a submersible water pump in a 5 to 8 gallon
bucket with a hose on the outlet of the pump.
6. Connect the hose to the condenser inlet.
7. Connect another hose to the condenser outlet
and route it to the bucket.
8. Mix an acid solution such as Scotsman ice
machine cleaner and hot water. Follow the mixing
instructions provided with the acid. Pour or mix the
solution in the bucket. Do NOT use straight acid.
9. Start the pump and operate it, circulating the
acid solution through the condenser for about an
hour.
November 2001
Page 28
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