Manitowoc RFF Service Manual

Part Number 000017542 Rev 00 8/22 23
Section 3
Operation
NOTE: Flake and nugget ice machines use an auger to
remove ice from the evaporator. Occasional noises (creaks,
groans, squeaks, or pops) are a normal part of the ice making
process.
Bin Thermostat and Evaporator Low Temperature
Safety Adjustment Chart
The bin thermostat sensing bulb is located in the ice chute
or bin and turns the ice machine on and off as the level
of ice in the ice chute or bin changes. The evaporator low
temperature safety protescts the evaporator and compressor
from damage caused by water loss or gear motor failure.
Model
Bin Thermostat
Setting
Evaporator
Thermostat Setting
UNF0200 5 5
UNP0200 *5 *5
UFF0200 5 5
UFP0200 *5 *5
UNF0300 5 6
UNP0300 *5 *6
RFF0320 3 7
RNF0320 3 6
RNP0320 *3 *6
UFF0350 5 7
UFP0350 *5 *7
RNF0620 2 ---
RNP0620 *2 ---
RFF0620 3 ---
RFP0620 *3 ---
RNF1020C 3 ---
RNF1100 3 ---
RNP1100 *3 ---
RFF1220C 3 ---
RFF1300 3 ---
RNF2000C *3 ---
RFF2200C 3 ---
RFF2500 3 ---
* Indicates preliminary data
1
2
3
4
5
6
7
1
2
3
4
5
6
7
BIN THERMOSTAT
SMALL NUMBERS = LESS ICE IN BIN
LARGE NUMBERS = MORE ICE IN BIN
EVAPORATOR LOW TEMPERATURE
SAFETY THERMOSTAT
INCORRECT SETTINGS WILL CAUSE ICE MACHINE
TO SHUT OFF
UFF0200/UNF0200/UNP0200/UFF0350/UFP0350/
UNF0300/UNP0300 Operation
The ice machine will not start until:
A. The rocker switch is moved to “ON”.
B. Ice does not contact the bin thermostat bulb.
C. The water reservoir is full of water.
Placing the toggle switch in the ON position starts the gear
motor and refrigeration system. The float valve controls the
water inlet valve and water level. The freeze cycle ends when
ice contacts the bin thermostat. The ice machine will restart
when ice no longer contacts the bin thermostat.
SENSING BULB IS
LOCATED IN BIN
BIN THERMOSTAT
LOCATION
EVAPORATOR LOW
TEMPERATURE SAFETY
THERMOSTAT LOCATION
RFF0320/RNF0320/RFP0320/RNP0320 Operation
The ice machine will not start until:
A. The rocker switch is moved to “ON”.
B. Ice does not contact the bin thermostat bulb.
C. The water reservoir is full of water.
Placing the toggle switch in the ON position starts the
gear motor and a 8 minute compressor time delay. The
compressor starts and the float valve controls the water
inlet valve and water level. The freeze cycle ends when ice
contacts the bin thermostat. The ice machine remains off
until ice no longer contacts the bin thermostat.
BIN THERMOSTAT
EVAPORATOR
THERMOSTAT

Manitowoc RFF Specifications

General

Brand	Manitowoc
Model	RFF
Category	Ice Maker
Language	English