Procedure To Clean Heavily Scaled Flake Ice Machines - Manitowoc RFF Installation, Operation And Maintenance Manual

Maintenance
Step 8 After all of the de-scaler/water solution has been
added, turn on the ice making water supply. Continue the
freeze cycle for 10 minutes to remove the de-scaling solution
from the water circuit.
Step 9 Place the toggle switch in the OFF position.
Step 10 Refer to Removal of Parts for De-scaling/Sanitizing
and disassemble parts for hand de-scaling/sanitizing.
• Hand de-scale all parts.
• Rinse all parts with clear potable water.
• Sanitize all parts — do not rinse after sanitizing.
• Spray all interior bin surfaces with sanitizer (do not rinse
sanitized areas).
• Spray evaporator discharge spout.
Step 11 Reassemble ice machine.
Step 12 Turn off the ice making water supply.
Step 13 Refer to chart and premix water and sanitizer.
Amount of Water
1 Gallon (4 L) Water
Step 14 Fill the evaporator and reservoir with sanitizer/
water solution.
Step 15 Move the toggle switch to the ON position. The ice
machine will make ice with the sanitizer/water solution and
deposit the ice in the bin. Add the remaining sanitizer/water
solution when the water level in the reservoir drops.
NOTE: Do not allow the sanitizer/water level to drop below
the minimum water level. The ice machine will discontinue
the sanitizing cycle if the water float switch opens.
Step 16 After all of the sanitizer/water solution has been
added to the reservoir, turn on the ice making water supply.
Step 17 Continue the freeze cycle for 30 minutes and then
discard all ice produced.
26
Amount of Sanitizer
0.5 ounce (15 ml)
Procedure to De-scale a Heavily Scaled Flake Ice
Machines
Step 1 Remove front and top covers and set the toggle
switch to the OFF position.
Step 2 Remove all ice from the bin.
Step 3 Turn off the ice making water supply.
Step 4 Remove the top cover from water reservoir.
Step 5 Refer to chart below:
Premix de-scaler with lukewarm water in a non-metallic
container.
Water Reservoir
Model
Capacity
UNF0200
UFF0200
UFP0200
UFF0350 14 oz (400 ml)
UFP0350
UNF0300
UNP0300
RFF0320
RNF0320
RFP0320
RNF0620 17 oz (500 ml)
RNP0620
RFF0620
RFP0620
RNF1100
RNP1100
34 oz (1 L)
RFF1200C
RFF1300
RNF2000C
RFF2200C 68 oz (2 L)
RFF2500
Step 6 Remove all water from the evaporator and water
reservoir. Add the entire de-scaler/water solution and
re-install the reservoir cover.
Leave the de-scaler/water solution in the evaporator for a
minimum of 4 hours.
Step 7 Remove all de-scaler/water from the evaporator
and water reservoir.
Step 8 Follow the Detailed De-scaling and Sanitizing
procedures on page 25.
Part Number 000017542 Rev 00 8/22
Section 4
Mix De-scaler and Water
Use Metal Safe Ice Machine
De-scaler, part number
000000084 only
De-scaler Water
9 oz (266 ml) 5 oz (148 ml)
11 oz (325 ml) 6 oz (177 ml)
23 oz (680 ml) 11 oz (325 ml)
46 oz (1.3 L) 22 oz (650 ml)