Service Manual
Maintenance Section 3
3-6 Part No. 80-1100-3
CLEANING PROCEDURE
Ice machine cleaner is used to remove lime scale or 
other mineral deposits. It is not used to remove algae or 
slime. Refer to the section on Sanitizing for removal of 
algae and slime.
Step 1 Set the toggle switch to the OFF position after 
ice falls from the evaporator at the end of a Harvest 
cycle. Or, set the switch to the OFF position and allow 
the ice to melt off the evaporator.
Step 2 To start cleaning, place the toggle switch in the 
CLEAN position. The water will flow through the water 
dump valve and down the drain. The Clean light will turn 
on to indicate the ice machine is in the Cleaning mode.
Step 3 Wait about one minute or until water starts to 
flow over the evaporator.
Step 4 Add the proper amount of Manitowoc Ice 
Machine Cleaner to the water trough.
Step 5 The ice machine will automatically time out a 
ten minute cleaning cycle, followed by six rinse cycles, 
and stop. The Clean light will turn off to indicate the 
Cleaning mode is completed. This entire cycle lasts 
approximately 25 minutes.
Step 6 When the cleaning process stops, move the 
toggle switch to OFF position. Refer to “Sanitizing 
Procedure” on the next page.
Step 7 
A. The ice machine may be set to start and finish a 
cleaning procedure then automatically start ice 
making again.
B. You must wait about one minute into the 
cleaning cycle (until water starts to flow over the 
evaporator) then move the switch from CLEAN 
to ICE position.
C. When the cleaning cycle is completed, an ice 
making sequence will start automatically.
!
Caution
Never use anything to force ice from the evaporator.
Damage may result.
Model Amount of Cleaner
Q200 Q280 Q320 Q370 3 ounces (90 ml)
Q420 Q450 Q600 Q800 5 ounces (150 ml)
Q1000 Q1300
Q1600 Q1800
9 ounces (270 ml)
Important
After the toggle switch is moved to the ICE position,
opening the curtain switch will interrupt the cleaning
sequence. The sequence will resume from the point
of interruption when the curtain switch closes.










