Procedure To Descale Heavily Scaled Flake/Nugget Ice Machines; Descaling Procedure - Manitowoc CNF201 Manual De Instalación, Operación Y Mantenimiento

Section 4
PROCEDURE TO DESCALE HEAVILY SCALED FLAKE/
NUGGET ICE MACHINES
Ice machines that are heavily scaled or have not been
descaled on a regular basis will need to run this procedure.
Failure to do so may result in binding of the auger as the lime
scale releases from the auger and evaporator barrel.
Step 1 Remove panels and set the ICE/OFF/CLEAN toggle
switch to the OFF position.
Step 2 Remove all ice from the bin.
Step 3 Turn off the water supply to the ice machine.
Step 4 Place ICE/OFF/CLEAN toggle switch in the CLEAN
position. The dump valve will open and drain the water from
the evaporator and reservoir.
Step 5 Wait approximately 30 seconds (or until the
evaporator is drained) and place the toggle switch in the OFF
position.
Step 6 Refer to chart and add the correct amount of
descaler for your model ice machine.
Model
CNF201 CNF202
Step 7 Turn on the water supply to the ice machine.
Important
Leave the descaler/water solution in the evaporator for a
minimum of 4 hours.
Step 8 Move the toggle switch to the ICE position. The
compressor will energize and produce ice with the descaling
solution. Continue the freeze cycle for 15 minutes.
Step 9 Move the toggle switch to the OFF position, then
follow the standard descaling (page 17) and sanitizing
procedures (page 18).
Part Number: 000015202 Rev 01 07/22
Amount of Descaler
12 ounce (355 ml)

DESCALING PROCEDURE

Ice machines that are heavily scaled or have not been
descaled on a regular basis will need to run the Heavily
Scaled Descaling Procedure before this one. Failure to do so
may result in binding of the auger as the lime scale releases
from the auger and evaporator barrel.
Ice machine descaler is used to remove lime scale or other
mineral deposits. It is not used to remove algae or slime.
Refer to the "Sanitizing Procedure" for removal of algae and
slime.
Step 1 Remove panels and set the ICE/OFF/CLEAN toggle
switch to the OFF position.
Step 2 Turn off the water supply to the ice machine.
Step 3 Remove all ice from the bin.
Step 4 Place ICE/OFF/CLEAN toggle switch in the CLEAN
position. The dump valve will open and drain the water from
the evaporator and reservoir.
Step 5 Wait approximately 30 seconds (or until the
evaporator is drained) and place the toggle switch in the OFF
position.
Step 6 Refer to chart and premix the correct solution of
descaler and cool water for your ice machine.
Amount of Descaler
Model Part Number
CNF201 CNF202 2 ounces (60 ml)
Maintenance
Amount of Water
000000084
32 ounces (1 liter)
17