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Part Number:040005890 Rev 07 08/22 17
Interior De-scaling and Sanitizing
GENERAL
De-scale and sanitize the ice machine every six months
for efficient operation. If the ice machine requires more
frequent de-scaling, consult a qualified service company to
test the water quality and recommend appropriate water
treatment. An Extremely dirty ice machine must be taken
apart for de-scaling and sanitaizing. Sanitizing for Exterior,
Remedial, and Detailed procedures can be perfomed
independently and more frequently than de-scaling if
desired.
,
Caution
Use only Manitowoc approved Ice Machine De-scaler
and Sanitizer. Using a non Manitowoc de-scaler or
sanitizer may result in bodily harm and/or cause
damage to the ice machine that is not covered under
the warranty. Do not use de-scaler or sanitizer quantities
that exceed the amounts listed in this manual. Do not
use these solutions in a manner inconsistent with their
labeling. Read and understand all labels printed on
bottles before use.
Detailed De-scaling and Sanitizing Procedures
Ice machine de-scaler is used to remove lime scale and
mineral deposits. Ice machine sanitizer disinfects and
removes algae and slime.
Control Operation
Pressing and holding the Clean button for 3 seconds starts
the clean cycle. The Clean and On/Off lights energize
indicating the clean cycle has started and ice making will
automatically start when the clean cycle is complete.
• Setting the ice machine to stop after the clean cycle:
Press the On/Off button. The On/Off light will de-
energize, indicating the ice machine will stop after the
clean cycle.
• Pausing the clean cycle: Press the Clean button. The
clean light will flash indicating the clean cycle has
paused. Pressing the Clean button again will restart the
clean cycle.
NOTE: If the ice damper is open for 2 seconds, the clean
cycle will pause. If the damper is open for 30 seconds, the
clean cycle will be canceled.
Step 1 Press the On/Off button after ice falls from the
evaporator at the end of a harvest cycle. Or, press the On/
Off button and allow the ice to melt off the evaporator.
Step 2 Remove all ice from the bin.
Step 3 To start a clean cycle, press the Clean button.
Water will flow through the water dump valve and down
the drain. Wait until the water trough refills, then add
the proper amount of ice machine de-scaler to the water
trough.
Model Amount of De-scaler
U0140 2 ounces (60 ml)
U0190 5 ounces (150 ml)
U0240 5 ounces (150 ml)
U0310 5 ounces (150 ml)
Wait until the clean cycle is complete (approximately
22minutes) then press the On/Off button and disconnect
power and water supplies to the ice machine.
Step 4 Remove parts for de-scaling.
Refer to the proper parts removal for your machine.
Continue with step 6 when the parts have been removed.
Section 4
Maintenance
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