Descaling Procedure - Manitowoc SM Serie Manual De Instalación, Operación Y Mantenimiento

Section 4

Descaling Procedure

Ice machine descaler is used to remove lime scale and
other mineral deposits. Ice machine sanitizer disinfects and
removes algae and slime.
NOTE: All ice must be removed from the bin.
Step 1 Prepare 4 oz (1/2 cup) of undiluted Manitowoc
Ice Machine Descaler (part number 000000084 only) in a
container that will fit easily under the lifted water shutters.
Refer to "Component Identification" on page 17 to identify
the water shutters.
Model
SM50
Step 2 Press the Clean switch. The ice machine will initiate
a 2 minute harvest to remove any remaining ice from the
evaporator.
Step 3 Remove all ice from the bin.
Step 4 Wait 3 minutes until the Clean light flashes, then
add the prepared Manitowoc Descaler by lifting the water
shutters and pouring directly into the spray area. The ice
machine will automatically time out a ten minute descaling
cycle, followed by eight rinse cycles, and stop. The Clean
light will turn off to indicate the clean cycle is complete. This
entire cycle lasts approximately 30 minutes.
Step 5 When the descaling process stops, disconnect
power and remove all parts as described in Removal of Parts
for Descaling and Sanitizing.
Step 6 Mix 16 oz (2 cups) descaler with 2 gal of warm
water.
Model Descaler Amount
SM50 16 oz (473 ml)
Step 7 Take all removed components to a sink for
descaling. Use 1/2 of the descaler/water mixture to descale
all components. The descaler 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 descale the parts.
Part Number 000001590 Rev05 07/22
Amount Of Descaler
4 oz. (120 ml)
Water Amount
2 gal. (8L)
Step 8 While components are soaking, use the other 1/2
of the descaler/water solution and a nylon brush or cloth to
descale inside of ice bin. Descale inside of door, door gasket,
bin, top of evaporator and evaporator bucket. Rinse all areas
thoroughly with clean water
Step 9 Mix 1 oz (2 tablespoons) sanitizer with 2 gal of
warm water.
Model Sanitizer Amount
Sm50
Step 10 Use 1/2 of the sanitizer/water mixture to sanitize
all removed components. Use a cloth or sponge to liberally
apply the solution to all surfaces of the removed parts or
soak the removed parts in the sanitizer/solution. Rinsing is
not required.
Step 11 Use the other 1/2 of the sanitizer/water solution
and a sponge or cloth to sanitize the inside of ice bin. Sanitize
inside of door, door gasket, bin, top of evaporator and
evaporator bucket. Rinsing is not required.
Step 12 Replace all removed components.
Step 13 Prepare 1/2 oz (1 tablespoon) of undiluted
Manitowoc Sanitizer.
Step 14 Reapply power to the ice machine, then press the
Clean switch. Wait 3 minutes until the Clean light flashes,
then add the prepared Manitowoc Sanitizer by lifting the
water shutters and pouring directly into the spray area.
Step 15 The ice machine will automatically time out a ten
minute sanitizing cycle, followed by eight rinse cycles, and
stop. The Clean light will turn off to indicate the sanitizing
cycle is complete. This entire cycle lasts approximately 30
minutes.
NOTE: The ice machine will automatically continue from the
previous point before the cycle was initiated.
A. If the ice machine was in the ice making cycle, the
control board will start ice making again.
B. If the ice machine was in the off cycle, the control
board will turn off.
Maintenance
Clean The Top Of The
Evaporator With A
Brush
Water Amount
1 oz (30ml) 2 gal (8L)
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