Manitowoc RF0244 User manual

Technician’s
Handbook
This manual is updated as new information and models
are released. Visit our website for the latest manual.
www.manitowocice.com
America’s #1 Selling Ice Machine
Manitowoc
R Model
Flake & Nugget
Part Number 000007661 7/10

Read These Before Proceeding:
!Caution
Proper installation, care and maintenance are
essential for maximum performance and trouble-
free operation of your Manitowoc equipment. If
you encounter problems not covered by this
handbook, do not proceed, contact Manitowoc
Foodservice Group. We will be happy to provide
assistance.
Important
Routine adjustments and maintenance
procedures outlined in this handbook are not
covered by the warranty.
!Warning
PERSONAL INJURY POTENTIAL
Do not operate equipment that has been
misused, abused, neglected, damaged, or
altered/modified from that of original
manufactured specifications.
This appliance is not intended for use by
persons (including children) with reduced
physical, sensory or mental capabilities, or
lack of experience and knowledge, unless
they have been given supervision
concerning use of the appliance by a person
responsible for their safety.
We reserve the right to make product
improvements at any time. Specifications and
design are subject to change without notice.

Part Number 000007661 7/10 3
Table of Contents
General Information
Model Numbers . . . . . . . . . . . . . . . . . . . . .7
Self Contained
Air & Water-Cooled Models . . . . . . . . .7
QuietQube Remote Air-cooled Models with
Remote Condensing Units . . . . . . . . .7
Model/Serial Number . . . . . . . . . . . . . . . .8
Manitowoc Cleaner and Sanitizer . . . . . .8
Ice Machine Warranty Information . . . . .8
Installation
Location of Ice Machine . . . . . . . . . . . . . .9
Installation Requirements . . . . . . . . . . . .9
Potable Water Requirements . . . . . . . . . .10
Drain Connections . . . . . . . . . . . . . . . . . .10
Ice Machine Clearance Requirements . .11
Cooling Tower Applications
(Water-Cooled Models Only) . . . . . . . . . .12
Heat of Rejection . . . . . . . . . . . . . . . . . . .13
RF Models . . . . . . . . . . . . . . . . . . . . . .13
RN Models . . . . . . . . . . . . . . . . . . . . .13
Electrical Service . . . . . . . . . . . . . . . . . . .13
Voltage . . . . . . . . . . . . . . . . . . . . . . . .13
Fuse/Circuit Breaker . . . . . . . . . . . . . .14
Ground Fault Interrupter Circuit (GFIC) 14
Maintenance
Cleaning and Sanitizing . . . . . . . . . . . . . .15
Exterior Cleaning . . . . . . . . . . . . . . . . .15
RF Models Cleaning/
Sanitizing Procedures . . . . . . . . . . . . .16
RN Models Cleaning/
Sanitizing Procedure . . . . . . . . . . . . . .22
Cleaning the Condenser . . . . . . . . . . .24
Removal from Service/Winterization . . .25

4 Part Number 000007661 7/10
Operation
Ice Making Sequence of Operation . . . . 27
Self-Contained Air-Cooled
RF0244/RF0266/RF0385/
RF0388/RF0399 . . . . . . . . . . . . . . . . . 27
Self-Contained Air-Cooled
RF0300 . . . . . . . . . . . . . . . . . . . . . . . . 27
Self-Contained Air-Cooled
RF0650/RF1200/RF2300 . . . . . . . . . . 28
QuietQube Remote Air-cooled Models with
Remote Condensing Units
RF1200C/RF2300C . . . . . . . . . . . . . . 29
Self-Contained Air-cooled &
Water-Cooled RN0400 . . . . . . . . . . . . 30
Self-Contained Air-Cooled &
Water-Cooled RN1000/RN1400 . . . . . 31
QuietQube Remote Air-cooled Models with
Remote Condensing Units
RN1000C/RN1200C . . . . . . . . . . . . . . 32
Thermostat Settings . . . . . . . . . . . . . . . . 34
RF Models . . . . . . . . . . . . . . . . . . . . . 34
Troubleshooting
Electrical Flowcharts . . . . . . . . . . . . . . . . 37
RF0244/RF0266RF0385//RF00388/
RF0399 Air & Water . . . . . . . . . . . . . . 38
RF0300 Air & Water . . . . . . . . . . . . . . 43
RF0650/RF1200 Air & Water . . . . . . . 48
RF2300 Air & Water . . . . . . . . . . . . . . 53
RN1000/RN1400 Air & Water . . . . . . . 60
RN1000C/RN1200C QuietQube . . . . . 68
RF1200C QuietQube . . . . . . . . . . . . . 78
RF2300C QuietQube . . . . . . . . . . . . . 84
Capillary Tube Models . . . . . . . . . . . . . . . 91
Thermostatic Expansion Valve Models . 92

Part Number 000007661 7/10 5
Component Specifications
Bin Thermostat . . . . . . . . . . . . . . . . . .93
Low Temperature Thermostat . . . . . . .93
High Pressure Cutout (HPCO) Control 93
Low Pressure Cutout (LPCO) Control .94
Fan Cycle Control . . . . . . . . . . . . . . . .94
Filter-Driers . . . . . . . . . . . . . . . . . . . . .95
Suction Cleanup Filter-Drier . . . . . . . .95
Total System Refrigerant Charge . . . .96
Charts
Cycle Times/24-Hour Ice Production/
Refrigerant Pressure Charts . . . . . . . . . .97
RF0244A . . . . . . . . . . . . . . . . . . . . . . .98
RF0266A . . . . . . . . . . . . . . . . . . . . . . .99
RF0385A . . . . . . . . . . . . . . . . . . . . . . .100
RF0388A . . . . . . . . . . . . . . . . . . . . . . .101
RF0399A . . . . . . . . . . . . . . . . . . . . . . .102
RF0300A . . . . . . . . . . . . . . . . . . . . . . .103
RF0650A . . . . . . . . . . . . . . . . . . . . . . .104
RF1200A . . . . . . . . . . . . . . . . . . . . . . .105
RF1200W . . . . . . . . . . . . . . . . . . . . . .106
RF2300A . . . . . . . . . . . . . . . . . . . . . . .107
RF2300W . . . . . . . . . . . . . . . . . . . . . .108
RN1000A . . . . . . . . . . . . . . . . . . . . . . .109
RN1000W . . . . . . . . . . . . . . . . . . . . . .110
RN1400A . . . . . . . . . . . . . . . . . . . . . . .111
RN1400W . . . . . . . . . . . . . . . . . . . . . .112
RN1078C . . . . . . . . . . . . . . . . . . . . . .113
RN1278C . . . . . . . . . . . . . . . . . . . . . .114
RF1278C . . . . . . . . . . . . . . . . . . . . . . .115
RF2378C . . . . . . . . . . . . . . . . . . . . . . .116

6 Part Number 000007661 7/10
Diagrams
Wiring Diagrams . . . . . . . . . . . . . . . . . . . 117
RF0244/RF0266/RF0385/
RF0388/RF0399 Air-Cooled . . . . . . . . 118
RF0300 Air-Cooled . . . . . . . . . . . . . . . 120
RF0650 - RF1200 Air-Cooled . . . . . . . 122
RF1200 Water-Cooled . . . . . . . . . . . . 124
RF2300 Air-Cooled & Water-cooled . . 126
RN1000/RN1400 Air & Water Cooled 128
RN1000C QuietQube Head Section . . 129
RN1200C QuietQube Head Section . . 130
RN2300C QuietQube Head Section . . 132
RCU Condensing Unit 1ph . . . . . . . . . 134
RCU Condensing Unit 3ph . . . . . . . . . 135
Refrigeration Tubing Schematics . . . . . 136
RF0244/RF0266/RF0388/RF0399
RF0300/RF0650 Air-cooled . . . . . . . . 136
RF1200 Air-cooled . . . . . . . . . . . . . . . 138
RF1200 Water-cooled . . . . . . . . . . . . 140
RF2300 Air-cooled . . . . . . . . . . . . . . . 142
RF2300 Water-cooled . . . . . . . . . . . . 144
RN1000/RN1400 Air & Water-cooled . 146
RN1000C QuietQube Head Section &
RCU1075 Condensing Unit . . . . . . . . 148
RN1200C QuietQube Head Section &
RCU1275 Condensing Unit . . . . . . . . 150
RN2300C QuietQube Head Section &
RCU2375 Condensing Unit . . . . . . . . 152

Part Number 000007661 7/10 7
General Information
Model Numbers
SELF CONTAINED
AIR & WATER-COOLED MODELS
QUIETQUBE REMOTE AIR-COOLED MODELS
WITH REMOTE CONDENSING UNITS
Flake Models
Self Storage
Air-Cooled Self Storage Water-Cooled Modular
Air-Cooled
Modular
Water-
Cooled
RF0244A – – –
RF0266A – – –
RF0385A – – –
RF0388A – – –
RF0399A – – –
– – RF0300A –
– – RF0650A –
– – RF1200A –
– – RF2300A –
Nugget Models
Self Storage
Air-Cooled Self Storage Water-Cooled Modular
Air-Cooled
Modular
Water-
Cooled
– – RN1008A RN1009W
– – RN1408A RN1409W
Flake Models
QuietQube Head RCU Remote
Condensing Unit
RF1278C RCU1275
RF2378C RCU2375
Nugget Models
QuietQube Head RCU Remote
Condensing Unit
RN1078C RCU1075
RN1278C RCU1275

8 Part Number 000007661 7/10
Model/Serial Number
These numbers are required when requesting
information from your local Manitowoc Distributor, or
Manitowoc Ice. The model and serial number are
listed on the MODEL/SERIAL NUMBER DECAL
affixed to the ice machine.
Manitowoc Cleaner and Sanitizer
Manitowoc Ice Machine Cleaner and Sanitizer are
available in 16 oz. (473 ml) bottles. These are the only
cleaners and sanitizers approved for use with
Manitowoc products.
Ice Machine Warranty Information
Warranty information for all ice machine models is
available on our website at www.manitowocice.com.
Cleaner Part Number Sanitizer Part Number
16 oz. 000000084 16 oz. 9405653
1 gal N/A 1 gal. 9405813

Part Number 000007661 7/10 9
Installation
Location of Ice Machine
The location selected for the ice machine must meet
the following criteria. If any of these criteria are not
met, select another location.
• The location must be free of airborne and other
contaminants.
• The location must not be near heat-generating
equipment or in direct sunlight.
• The location must be capable of supporting the
weight of the ice machine and a full bin of ice.
• The location must allow enough clearance for
water, drain and electrical connections in the rear
of the ice machine.
• The location must not obstruct airflow through or
around the ice machine.
Installation Requirements
• The air temperature must be at least 50°F (10°C),
but must not exceed 110°F (43°C).
• The water temperature must be at least 40°F
(4°C), but must not exceed 90°F (32°C).
• The ice machine and bin must be level.
• Vent the ice machine and bin drains separately.
• Bin drain termination must have an air gap.
• RF Models Only: A backflow preventer is required
on water inlet lines.
• Routine adjustments and maintenance procedures
outlined in this manual are not covered by the
warranty.

10 Part Number 000007661 7/10
Potable Water Requirements
• Plumbing must conform to local codes.
• Do not connect the ice machine to a hot water
supply. Be sure all hot water restrictors installed for
other equipment are working. (Check valves on
sink faucets, dishwashers, etc.)
• If water pressure exceeds maximum pressure
(70 psig [483 kPa] RN1000; 80 psig [552 kPa] for
all other models) obtain a water pressure regulator
from your Manitowoc distributor.
• A water shut-off valve is required to clean the ice
machine.
• A union for both the ice making and condenser
water lines is required.
• Water inlet lines require insulation to prevent
condensation.
• RF Models: A backflow preventer is required on
water inlet lines.
Drain Connections
• Drain lines must have a 1.5 inch drop per 5 feet of
run (2.5 cm per meter), and must not create traps.
• The floor drain must be large enough to
accommodate drainage from all drains.
• Separate insulated bin and water-cooled
condenser drain lines are required.
• The bin and ice machine drains require a vent.

Part Number 000007661 7/10 11
Ice Machine Clearance Requirements
* Water-Cooled Only - There is no minimum clearance required. This
value is recommended for efficient operation and servicing only.
NOTE: Allowance must be made for removal when the
ice machine is built-in. Monthly removal of the top
panel is required for cleaning and sanitizing.
Head
Sections
Self-
Contained
Air-Cooled
Self-
Contained
Water-Cooled*
QuietQube
Air-Cooled
Back 5" (12.7 cm) 5" (12.7 cm) 0" (0 cm)
Sides/Top 8" (20.3 cm) 8" (20.3 cm) 0" (20 cm)
RCU Units Remote Condensing Unit*
Front/Back 24" (61.0 cm)
Sides/Top 6" (15.2 cm)*

12 Part Number 000007661 7/10
Cooling Tower Applications
(Water-Cooled Models Only)
A water cooling tower installation does not require
modification of the ice machine. The water regulator
valve for the condenser continues to control the
refrigeration discharge pressure.
It is necessary to know the amount of heat rejection,
and pressure drop through the condenser and water
valves (inlet and outlet) when using a cooling tower on
an ice machine.
• Water entering the condenser must not be lower
than 37°F (3°C) or exceed 90°F (32°C).
• Water flow through the condenser must not
exceed 5 gal. (19 L) per minute.
• Allow for a pressure drop of 7 psi (48 kPa)
between the condenser water inlet and the outlet
of the ice machine.
• Water exiting the condenser must not exceed
110°F (43°C).

Part Number 000007661 7/10 13
Heat of Rejection
RF MODELS
RN MODELS
1The figure shown is an average.
Electrical Service
VOLTAGE
The maximum allowable voltage variation is ± 10% of
the rated voltage on the ice machine model/serial
number plate at compressor start-up.
Model Heat of Rejection 1
RF0244 2,400 BTUH (605 Kcal/hr)
RF0266 2,400 BTUH (605 Kcal/hr)
RF0385 3,500 BTUH (882 Kcal/hr)
RF0388 3,500 BTUH (882 Kcal/hr)
RF0399 3,500 BTUH (882 Kcal/hr)
RF0300 3,500 BTUH (882 Kcal/hr)
RF0650 7,700 BTUH (1941 Kcal/hr)
RF1200 14,000 BTUH (3529 Kcal/hr)
RF2300 29,500 BTUH (7436 Kcal/hr)
Series
Ice Machine Heat of Rejection 1
Air-Cooled Water-Cooled
RN1000 - 50/60 Hz 11,300 BTU/hr
(2848 Kcal/hr) 12,800 BTU/hr (3226 Kcal/hr)
RN1400 - 50 Hz 16,000 BTU/hr
(4032 Kcal/hr) 16,400 BTU/hr (4133 Kcal/hr)
RN1400 - 60 Hz 15,500 BTU/hr
(3906 Kcal/hr) 15,500 BTU/hr (3906 Kcal/hr)
! Warning
All wiring must conform to local, state and national
codes.

14 Part Number 000007661 7/10
FUSE/CIRCUIT BREAKER
A separate fuse/circuit breaker must be provided for
each ice machine. Circuit breakers must be H.A.C.R.
rated (does not apply in Canada).
GROUND FAULT INTERRUPTER CIRCUIT (GFIC)
A GFCI/GFI circuit protection is not recommended
with our equipment. If a GFCI/GFI is required by code
a GFCI/GFI breaker rather than outlet must be used to
avoid intermittent nuisance trips.
! Warning
The ice machine must be grounded in accordance
with national and local electrical codes.

Part Number 000007661 7/10 15
Maintenance
Cleaning and Sanitizing
Maintenance procedures covered in this manual are
not covered by the warranty.
EXTERIOR CLEANING
Remove dust and dirt off exterior surfaces with mild
household dish-washing detergent and warm water.
Wipe dry with a clean, soft cloth.
!
Caution
Use only Manitowoc approved Ice Machine
Cleaner (part number 000000084) and Sanitizer
(part number 9405653). Do not mix Cleaner and
Sanitizer solutions together. It is a violation of
Federal law to use these solutions in a manner
inconsistent with their labeling. Read and
understand all labels printed on bottles before
use.
! Warning
Wear rubber gloves and safety goggles (and/or
face shield) when handling ice machine Cleaner
or Sanitizer.

16 Part Number 000007661 7/10
RF MODELS CLEANING/SANITIZING
PROCEDURES
Cleaning/Sanitizing Procedure
This procedure must be performed once every month.
• All ice must be removed from the bin
• The ice machine and bin must be disassembled
cleaned and sanitized
• The ice machine produces ice with the cleaner and
sanitizer solutions
• All ice produced during the cleaning and sanitizing
procedure must be discarded
Procedure to Clean/Sanitize
Use Ice Machine Cleaner part number 000000084.
Use Ice Machine Sanitizer part number 9405653.
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 and drain
water from evaporator and reservoir.
Step 4 Remove the top cover from water reservoir.
Step 5 Follow the chart and premix cleaner and
water.
Amount of Water Amount of Cleaner
Part Number 000000084
1 gallon (4 Liters) 3 ounces (90 ml)

Part Number 000007661 7/10 17
Step 6 Fill the evaporator and reservoir with cleaning
solution.
Step 7 Move the toggle switch to the ON position.
The ice machine will make ice with the cleaning
solution and deposit the ice in the bin. Add the
remaining cleaner/water solution as the water level in
the reservoir drops.
NOTE: Do not allow the cleaner/water level to drop
below the minimum water level. The ice machine will
discontinue the cleaning cycle if the water float switch
opens.
Step 8 After all of the cleaner/water solution has
been added turn on the ice making water supply.
Continue the freeze cycle for 10 minutes to remove
the cleaning solution from the water circuit.
Prop Float Up to Prevent Low
Water Level Shutdown

18 Part Number 000007661 7/10
Step 9 Place the toggle switch in the OFF position.
Step 10 Refer to disassembly for cleaning/sanitizing
and remove parts for hand cleaning/sanitizing.
• Hand clean 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.

Part Number 000007661 7/10 19
Step 13 Refer to chart and premix water and
sanitizer.
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 cleaning 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.
Amount of Water Amount of Sanitizer
1 Gallons (4 L) Water 1/2 ounce (15 ml)

20 Part Number 000007661 7/10
Heavily Scaled Cleaning Procedure
Perform this procedure if you have some or all of these
symptoms.
• Excessive grinding, popping or squealing noises
from the evaporator
• Grinding noise from gearbox
• Ice machine trips speed sensor
NOTE: A Cleaning/Sanitizing Procedure must be
performed after this procedure.
Procedure to Clean 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.