As you work on Manitowoc equipment, be sure to pay
close attention to the safety notices in this handbook.
Disregarding the notices may lead to serious injury and/
or damage to the equipment.
Throughout this handbook, you will see the following
types of safety notices:
Warning
n
Text in a Warning box alerts you to a potential
personal injury situation. Be sure to read the Warning
statement before proceeding, and work carefully.
Caution
,
Text in a Caution box alerts you to a situation in which
you could damage the equipment. Be sure to read
the Caution statement before proceeding, and work
carefully.
Procedural Notices
As you work on Manitowoc equipment, be sure to read
the procedural notices in this handbook. These notices
supply helpful information which may assist you as you
work.
Throughout this handbook, you will see the following
types of procedural notices:
Important
Text in an Important box provides you with
information that may help you perform a procedure
more efficiently. Disregarding this information will
not cause damage or injury, but it may slow you
down as you work.
NOTE: Text set off as a Note provides you with simple, but
useful, extra information about the procedure you are
performing.
Read These Before Proceeding:
Caution
,
Proper installation, care and maintenance are
essential for maximum performance and trouble-free
operation of your equipment. Visit our website www.
manitowocfsg.com for manual updates, translations,
or contact information for service agents in your area.
Important
Routine adjustments and maintenance procedures
outlined in this handbook are not covered by the
warranty.
Warning
n
Read this manual thoroughly before operating,
installing or performing maintenance on the
equipment. Failure to follow instructions in this
manual can cause property damage, injury or death.
Warning
n
Do not use electrical appliances or accessories other
than those supplied by Manitowoc for your ice
machine model.
Warning
n
Two or more people or a lifting device are required to
lift this appliance.
Warning
n
This equipment contains high voltage electricity and
refrigerant charge. Installation and repairs are to be
performed by properly trained technicians aware of
the dangers of dealing with high voltage electricity
and refrigerant under pressure.The technician must
also be certified in proper refrigerant handling
and servicing procedures. All lockout and tag out
procedures must be followed when working on this
equipment.
Warning
n
Do not damage the refrigeration circuit when
installing, maintaining or servicing the unit.
Warning
n
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. Do not allow children to
play with this appliance.
Warning
n
All covers and access panels must be in place and
properly secured, before operating this equipment.
Warning
n
Do not obstruct machine vents or openings.
Warning
n
Do not store gasoline or other flammable vapors or
liquids in the vicinity of this or any other appliance.
Warning
n
Do not clean with water jet.
Warning
n
It is the responsibility of the equipment owner to
perform a Personal Protective Equipment Hazard
Assessment to ensure adequate protection during
maintenance procedures.
Warning
n
Two or more people are required to move this
equipment to prevent tipping.
Warning
n
When using electric appliances, basic precautions
must always be followed, including the following:
a. Read all the instructions before using the
appliance.
b. To reduce the risk of injury, close supervision
is necessary when an appliance is used near
children.
c. Do not contact moving parts.
d. Only use attachments recommended or sold
by the manufacturer.
e. Do not use outdoors.
f. For a cord-connected appliance, the
following must be included:
• Do not unplug by pulling on cord. To
unplug, grasp the plug, not the cord.
• Unplug from outlet when not in use and
before servicing or cleaning.
• Do not operate any appliance with
a damaged cord or plug, or after the
appliance malfunctions or is dropped
or damaged in any manner. Contact
the nearest authorized service facility
for examination, repair, or electrical or
mechanical adjustment.
RN0400/RN1000/RN1400 Air & Water-cooled . 278
RN1000C/RN1200C QuietQube Head Section &
RCU1075/RCU1275 Condensing Unit.........280
14 Part Number 000007661 11/16
General Information
Model Numbers
SELF CONTAINED
AIR & WATERCOOLED MODELS
Flake Models
Self Storage
Air-Cooled
RF0244A–––
RF0266A–––
RF0385A–––
RF0388A–––
RF0399A–––
––RF0300A–
––RFS0300A–
RF0644A––
––RF0650ARF0650W
––RFS0650ARFS0650W
––RF1200ARF1200W
––RFS1200ARFS1200W
––RF2300ARF2300W
Self Storage
Water-
Cooled
Modular Air-
Cooled
Modular
Water-
Cooled
Part Number 000007661 11/16 15
NUGGET MODELS
Self Storage
Air-Cooled
RNS0244A–––
--–RNS0308A–
RNS0385A–––
RN0408A–––
––RNS1008A–
––RN1008ARN1009W
––RN1408ARN1409W
Self Storage
Water-
Cooled
Modular Air-
Cooled
Modular
Water-
Cooled
QUIETQUBE MODELS WITH REMOTE CONDENSING
UNITS
Flake Models
QuietQube HeadRCU Remote Condensing
Unit
RF1278CRCU1075
RFS1278CRCU1075
RF2378CRCU2375
RFS2378CRCU2375
Nugget Models
QuietQube HeadRCU Remote Condensing
Unit
RN1078CRCU1075
RN1278CRCU1275
16 Part Number 000007661 11/16
RACK UNITS
Flake Models
Head SectionRack Remote Condensing
Unit
RF1279RSupplied by Others
RFS1279RSupplied by Others
RF2379RSupplied by Others
RFS2379RSupplied by Others
NOTE: Rack units share a common refrigeration circuit
with other equipment, such as display cases and glass
door freezer displays. Rack units have been modified to
function with rack systems and will not function correctly
with RCU condensing units.
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
cleaner and sanitizer approved for use with Manitowoc
products.
Cleaner Part NumberSanitizer Part Number
16 oz.00000008416 oz.9405653
1 galN/A1 gal.9405813
Ice Machine Warranty Information
Warranty information for all ice machine models is
available on our website at www.manitowocice.com.
Part Number 000007661 11/16 17
Ice Machine Heat of Rejection
Series Ice
Machine
RF Flake Models
RF0244A24005000
RF0266A24005000
RF0300A24002400
RF0385A35005200
RF0388A35005200
RF0399A35005200
RF0644A770010250
RF0650A52007700
RF0650W52007700
RF1200A750014000
RF1200W750014000
RF1200C75001400
RF2300A1570029500
RF2300W1570029500
RF2300C1570029500
RFS Flake Models
RFS0300A24005000
RFS0650A52007700
RFS0650W52007700
RFS1200A750014000
RFS1200W750014000
RFS1200C750014000
RFS2300C1570019500
Air Conditioning*Peak
Heat of Rejection
18 Part Number 000007661 11/16
Ice Machine Heat of Rejection
Series Ice
Machine
RN Nugget Models
RN0408A38005400
RN1008A1130012800
RN1009W1130012800
RN1078C1130012800
RN1278C750014000
RN1408A1600016400
RN1409W1600016400
RNS Nugget Models
RNS0244A24005000
RNS0308A30754100
RNS038535004600
RNS0608A52007700
RNS0609W52007700
RNS1008A750010900
RNS1009W750010900
RNS1078C750014000
Air Conditioning*Peak
Heat of Rejection
*BTU/Hour
NOTE: Because the heat of rejection varies during the ice
making cycle, the figure shown is an average.
Part Number 000007661 11/16 19
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20 Part Number 000007661 11/16
Installation
Installation Requirements
The location selected for the ice machine must meet
the following criteria. If any of these criteria are not met,
select another location.
• Air temperature:
• RF or RFS Flake Models - Minimum 50°F (10°C),
Maximum 110°F (43°C)
• 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.
• The ice machine and bin must be level.
• Routine adjustments and maintenance procedures
outlined in this manual are not covered by the
warranty.
Part Number 000007661 11/16 21
Potable Water Requirements
• Plumbing must conform to local codes.
• Water temperature: Minimum 40°F (4°C), Maximum
90°F (32°C).
• 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/RFS/RFN Models: A back flow 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.
• Bin drain termination must have an air gap.
• Separate insulated bin and water-cooled condenser
drain lines are required.
• The bin and ice machine drains require a vent.
22 Part Number 000007661 11/16
Ice Machine Clearance Requirements
Head
Sections
Back5” (12.7 cm)5” (12.7 cm)5” (12.7 cm)
Sides/Top8” (20.3 cm)8” (20.3 cm)8” (20.3 cm)
RCU UnitsRemote Condensing Unit*
Front/Back24” (61.0 cm)
Sides/Top6” (15.2 cm)*
SelfContained
Air-Cooled
Self-
Contained
Water-
Cooled*
QuietQube
Air-Cooled
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.
Part Number 000007661 11/16 23
Cooling Tower Applications
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).
24 Part Number 000007661 11/16
Electrical Service
Warning
n
All wiring must conform to local, state and national
codes.
VOLTAGE
The maximum allowable voltage variation is ± 10% of the
rated voltage on the ice machine model/serial number
plate at compressor start-up.
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).
Warning
n
The ice machine must be grounded in accordance with
national and local electrical codes.
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.
Part Number 000007661 11/16 25
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26 Part Number 000007661 11/16
Maintenance
Cleaning and Sanitizing
Maintenance procedures covered in this manual are not
covered by the warranty.
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
n
Wear rubber gloves and safety goggles (and/or face
shield) when handling ice machine Cleaner or Sanitizer.
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.
RF/RFS/RNS 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
Part Number 000007661 11/16 27
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 WaterAmount of Cleaner
Part Number 000000084
1 gallon (4 Liters)3 ounces (90 ml)
Step 6 Fill the evaporator and reservoir with cleaning
solution.
Prop Float Up to Prevent Low
Water Level Shutdown
28 Part Number 000007661 11/16
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.
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 11/16 29
Step 13 Refer to chart and premix water and sanitizer.
Amount of WaterAmount of Sanitizer
1 Gallons (4 L) Water1/2 ounce (15 ml)
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.
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.
30 Part Number 000007661 11/16
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