Part Number 000016662 Rev 00 4/21
19
Section 4
Maintenance
Detailed Descaling and Sanitizing Procedure
Ice machine descaler is used to remove lime scale and
other mineral deposits. Ice machine sanitizer disinfects and
removes algae and slime.
Step 1
Press power after ice falls from the evaporator at
the end of a harvest cycle. Or, press power and allow the ice
to melt off the evaporator
Step 2
Remove all ice from the bin.
Prepare 4 oz (1/2 cup) of undiluted Manitowoc Ice Machine
descaler (part number 9405463 only) in a container that will
fit easily under the lifted water curtain.
Model
Amount Of Descaler
USE0050
4 oz. (120 ml)
Step 3
Press and hold the clean button for 3 seconds.
Step 4
Wait until the water pump sprays water onto the
evaporator(approximately 3 minutes) then add the prepared
Manitowoc Descaler by lifting the water curtain and pouring
directly into the spray area.
Step 5
Press the power button to have the ice machine
stop at the end of the clean cycle. The ice machine will
automatically time out a ten minute cleaning cycle,
followed by five rinse cycles and stop. This entire cycle lasts
approximately 30 minutes.
Step 6
Disconnect electric power to the ice machine.
Step 7
Mix 16 oz (2 cups) descaler with 2 gal of warm
water.
Model
Descaler Amount
Water Amount
USE0050
16 oz (473 ml)
1 gal. (4L)
Step 8
Remove the following components for descaling
and sanitizing:
Tongs, Tong Holder, Water Curtain, Ice Ramp, Water Pump,
and Spray Nozzle Assembly. Refer to “Removal of Parts for
Descaling/Sanitizing” on page 20 for identification.
Step 9
Take all removed components to a sink for
descaling. Use 1/2 of the descaler/water mixture to descale
all components. The solution will foam when it contacts lime
scale and mineral deposits; once the foaming stops, use a
soft-bristle nylon brush, sponge or cloth (NOT a wire brush)
to carefully clean the parts.
Step 10
Place floats in a small container filled with descaler
water solution to soak.
Step 11
While components are soaking, use the other 1/2
of the descaler/water solution and a nylon brush or cloth to
clean inside the ice bin. Clean inside of door, door gasket,
bin, and evaporator bucket. Rinse all areas thoroughly with
clean water
Step 12
Mix 1 oz (2 tablespoons) sanitizer with 2 gal of
warm water.
Model
Sanitizer Amount
Water Amount
USE0050
1 oz (30ml)
2 gal (8L)
Step 13
Remove floats from container, empty container
and rinse floats and container with clean water. Fill container
with sanitizer water solution and place floats in container to
soak. Soak floats for 10 minutes then remove. Do not rinse
sanitized floats.
Step 14
Use 1/2 of the sanitizer/water mixture to sanitize
all removed components. Use a spray bottle, cloth or sponge
to liberally apply the solution to all surfaces of the removed
parts or soak the removed parts in the sanitizer/solution. Do
not rinse sanitized components.
Step 15
Use the other 1/2 of the sanitizer/water solution
and a spray bottle, sponge or cloth to sanitize the inside
of ice bin. Sanitize inside of door, door gasket, bin and
evaporator bucket. Do not rinse sanitized areas.
Step 16
Replace all removed components.
Step 17
Reapply power to the ice machine, then press the
Clean button. Wait until the water pump sprays water onto
the evaporator (approximately 3 minutes) then add 1/2 oz
(1 tablespoon) of undiluted Manitowoc Sanitizer by lifting
the water curtain and pouring directly into the spray area.
This entire cycle lasts approximately 30 minutes. When the
clean cycle is complete the ice machine will start a freeze
cycle.
