18 Part Number: 040006977 09/22
Maintenance Section 4
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 sanitizing.
NOTE: Sanitizing can be performed independently and more
frequently than de-scaling if desired.
,
Caution
Use only approved Ice Machine Cleaner and Sanitizer
(Manitowoc De-scaler part number 000000084 and
Manitowoc Sanitizer part number 9405653). Read and
understand all labels printed on bottles before use. Do not
mix Ice Machine De-scaler and Sanitizer solutions together
n
Warning
Wear rubber gloves and safety goggles (and/or face shield)
when handling Ice Machine De-scaler or Sanitizer.
DETAILED DE‑SCALING/SANITIZING PROCEDURE
This procedure must be performed a minimum of once every
six months.
• The ice machine and bin must be disassembled de-scaled
and sanitized.
• All ice produced during the de-scaling and sanitizing
procedures must be discarded.
REMEDIAL DE‑SCALING PROCEDURE
• This procedure de-scales all components in the waterflow
path, and is used between the bi-yearly detailed
Detailed De-scaling and Sanitizing procedure
DE‑SCALING PROCEDURE
Ice machine de-scaler is used to remove lime scale or other
mineral deposits. Sanitizer is used to remove algae or slime.
Mix 4 liters of water with 500 ml of de-scaler in a plastic or
stainless container.
De-scaler Water
500 ml (16 oz) 4 L (1 gal)
Step 1 Set the toggle switch to the OFF position at the end
of a Harvest Cycle, after ice releases from the evaporator. Or,
set the switch to the OFF position and allow the ice to melt
off the evaporator.
,
Caution
Never use anything to force ice from the evaporator.
Damage may result.
Step 2 Remove all ice from the bin.
Step 3 Remove all parts as described in Section 3
“Componet Removal” on page 12.
Step 4 Take all components to sink and with 2 liters De-
scaler/Water mixture clean all components with a soft nylon
brush. Disassemble spray bar, remove nozzles and inserts and
soak for 5 minutes. For heavily scaled parts, soak in solution
for 15–20 minutes. Rinse all components with clean water.
Cleaning the Condenser
Step 5 While components are soaking; use nylon brush to
scrub inside of ice bin. Scrub inside of door, door track, bin,
sump trough, and evaporator moldings. With clean water,
rinse all of these areas thoroughly.
Step 6 Replace sump overflow tube and pour remaining 2
liters of mixture into the water sump. Replace all parts.
Step 7 To start a standard cleaning cycle, press the toggle
switch to WASH position and hold for 5 seconds.
Step 8 Wait until the cleaning cycle is complete
(approximately 13.5 minutes). Remove water curtain, ice
chute and over flow tube from the water sump. Allow all
water to drain from the sump. Replace drain plug.Press the
toggle switch to WASH position and hold for 5 seconds to
start a rinsing cycle.
Step 9 Wait until the rinsing cycle is complete
(approximately 12 minutes). Remove water curtain, ice
chute, water sump over flow tube. Drain water from sump
and replace tube.
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