Manitowoc RNS0244 User manual

Part Number 000007661 11/16
R Model
Flake & Nugget Ice Machine
Technician’s Handbook

Safety Notices
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:
nWarning
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.

nWarning
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.
nWarning
Do not use electrical appliances or accessories other
than those supplied by Manitowoc for your ice
machine model.
nWarning
Two or more people or a lifting device are required to
lift this appliance.
nWarning
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.

nWarning
Do not damage the refrigeration circuit when
installing, maintaining or servicing the unit.
nWarning
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.
nWarning
All covers and access panels must be in place and
properly secured, before operating this equipment.
nWarning
Do not obstruct machine vents or openings.

nWarning
Do not store gasoline or other flammable vapors or
liquids in the vicinity of this or any other appliance.
nWarning
Do not clean with water jet.
nWarning
It is the responsibility of the equipment owner to
perform a Personal Protective Equipment Hazard
Assessment to ensure adequate protection during
maintenance procedures.
nWarning
Two or more people are required to move this
equipment to prevent tipping.

nWarning
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.
g. Follow applicable lock out tag out procedures
before working on equipment.
h. Connect to a properly grounded outlet only.

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Table of Contents
Part Number 000007661 11/16 9
Safety Notices ....................................2
Procedural Notices ...............................2
General Information
Model Numbers ................................ 15
Self Contained................................ 15
Air & Water-Cooled Models ................... 15
Nugget Models............................... 16
QuietQube Models with Remote Condensing
Units ......................................... 16
Rack Units.................................... 17
Model/Serial Number........................... 17
Manitowoc Cleaner and Sanitizer .............. 17
Ice Machine Warranty Information ............. 17
Ice Machine Heat of Rejection . . . . . . . . . . . . . . . . . . 18
Installation
Installation Requirements...................... 21
Potable Water Requirements . . . . . . . . . . . . . . . . . . . 22
Drain Connections.............................. 22
Ice Machine Clearance Requirements .......... 23
Cooling Tower Applications .................... 24
Electrical Service ............................... 25
Voltage ...................................... 25
Fuse/Circuit Breaker .......................... 25
Ground Fault Interrupter Circuit (GFIC) ........ 25
Maintenance
Cleaning and Sanitizing ........................ 27
Exterior Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
RF/RFS/RNS Models Cleaning/Sanitizing
Procedures ................................... 27
Parts removal for Cleaning/Sanitizing ......... 32
Ice Chute Removal - RFS & RNS Models ........ 33
Ice Chute Removal - RF Models................ 34
Ice Chute Switch Actuator Removal ........... 35
Cleaning sanitizing Procedure RN0400 ........ 36
Cleaning the Air filter and Condenser ......... 39
Removal from Service/Winterization ........... 40

10 Part Number 000007661 11/16
Sequence of Operation
Ice Making Sequence of Operation ............. 41
RF0244/RNS0244/RF0266/RF0385/RFS0385/
RNS0385/RF0388/RF0399 ..................... 41
RF0300....................................... 42
RFS0300/RNS0308 ............................ 43
RF0644/RF0650/RF1200/RFS1200/RF2300/
RFS2300...................................... 44
RF1200C/RF2300C............................ 45
RF1200C/RF2300C............................ 46
RN0400 ...................................... 47
RN1000/RN1400.............................. 54
RN1000C/RN1200C ........................... 57
Thermostat Settings............................ 61
Troubleshooting
RF0244/ RNS0244/RF0266/RF0385/RFS0385/
RF0388/RF0399/RNS0385 Troubleshooting .... 63
Self-Contained Air-Cooled .................... 63
RF0300 Troubleshooting ....................... 69
Self-Contained Air-Cooled .................... 69
RFS0300/RNS0300 Troubleshooting ........... 75
Self-Contained Air-Cooled .................... 75
RF0644/RF0650/RNS0600/RNS1000/RF1200
RFS1200 Troubleshooting ...................... 81
Self-Contained Air-Cooled .................... 81
Rotation Sensor Operation.................... 81
RNS1000/RF1200C/RFS1200C Troubleshooting 87
QuietQube Remote Air-cooled Models with
Remote Condensing Unit ..................... 87
RF1200R/RFS1200R Troubleshooting .......... 94
Head Section For Rack Refrigeration Systems .. 94
Rotation Sensor Operation.................... 94

Part Number 000007661 11/16 11
RF2300/RFS2300 Troubleshooting ............101
Self-Contained Air-Cooled ...................101
Rotation Sensor Operation...................101
RF2300C/RFS2300C Troubleshooting .........108
QuietQube Remote Air-cooled Models with
Remote Condensing Unit ....................108
RF2300R/RFS2300R Troubleshooting .........116
Head Section For Rack Refrigeration systems . 116
Rotation Sensor Operation...................116
RN0400 Troubleshooting......................124
Over-Torque Failure..........................124
Water Loss Failure ...........................127
RN1000/RN1400 Troubleshooting.............133
Indicator Light Operation ....................133
Control Board Errors .........................137
RN1000C/RN1200C Troubleshooting ..........147
Indicator Light Operation ....................147
Control Board Errors .........................151
Refrigeration Troubleshooting ................163
Capillary Tube Models .......................163
Thermostatic Expansion Valve Models........164
Component Specifications
Bin Thermostat ..............................165
Low Temperature Thermostat
Evaporator safety thermostat)................165
High Pressure Cutout (HPCO) Control.........166
Rotation Sensor .............................167
Low Pressure Cutout (LPCO) Control..........167
Fan Cycle Control ............................168
Total System Refrigerant Charge .............169
Filter-Driers..................................171
Suction Cleanup Filter-Drier..................171

12 Part Number 000007661 11/16
Charts
Total System Refrigerant Charge ..............173
Ice Production & Refrigerant Pressure.........173
RF Flake Models ...............................174
RF0244A ....................................174
RF0266A ....................................175
RF0300A ....................................176
RF0385A ....................................177
RF0388A ....................................178
RF0399A ....................................179
RF0644A ....................................180
RF0650A ....................................181
RF0650W....................................182
RF1200A ....................................183
RF1200W....................................184
RF1278C With RCU1075......................185
RF2300A ....................................186
RF2300W....................................187
RF2378C with RCU2375......................188
RFS Flake Models ..............................189
RFS0244A ...................................189
RFS0300A ...................................190
RFS0650A ...................................191
RFS0650W...................................192
RFS1200A ...................................193
RFS1200W...................................194
RFS1278C With RCU1075 ....................195
RFS2300A ...................................196
RFS2300W...................................197
RFS2378C with RCU2375.....................198
RN Nugget Models ............................199
RN0408A ....................................199
RN1008A ....................................200
RN1009W ...................................201
RN1408A ....................................202
RN1409W ...................................203
RN1078C With RCU1075 .....................204
RN1278C With RCU1275 .....................205

Part Number 000007661 11/16 13
RNS Nugget Models ...........................206
RNS0244A...................................206
RNS0308A...................................207
RNS0385A...................................208
RNS0608A...................................209
RNS0609W ..................................210
RNS1000A...................................211
RNS1009W ..................................212
RNS1078C With RCU1098 ....................213
Rack Models ...................................214
RF1279R ....................................214
RFS1279R ...................................215
RF2379R ....................................216
RFS2379R ...................................217
Diagrams
Wiring Diagrams...............................219
Flake Models ..................................220
RF0244/RF0266/RF0385/RF0388/RF0399 Air-
Cooled ......................................220
RF0300 Air-Cooled...........................222
RFS0300 Air-Cooled .........................224
RF0650/RF1200 Air-Cooled ..................226
RFS1200A Air-Cooled ........................228
RF1200 Water-Cooled........................230
RFS1200W Water-Cooled ....................232
RF1200C/RFS1200C QuietQube Head Section 234
RF2300/RFS2300 Air-Cooled & Water-cooled..236
RF2378C/RFS2378C QuietQube Head Section 238
Condensing Units .............................240
RCU Condensing Unit 1ph ...................240
RCU Condensing Unit 3ph ...................241

14 Part Number 000007661 11/16
Rack Models ...................................242
RF1279R/RFS1279R Head Section ............242
RF2379R/RFS2379R Head Section ............244
Nugget Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246
RNS0244/RNS0385 Air-Cooled ...............246
RNS0308 Air-Cooled . . . . . . . . . . . . . . . . . . . . . . . . . 248
RN0400 115v/60hz/1ph......................250
RN0400 230v/60hz/1ph......................251
RNS0600A Air-Cooled........................252
RNS0600W Water-Cooled ....................254
RNS1000 Air-Cooled . . . . . . . . . . . . . . . . . . . . . . . . . 256
RNS1009 Water-cooled ......................258
RNS1078C...................................260
RN1000/RN1400 Air & Water Cooled..........262
RN1000C/RN1200C QuietQube Head Section. 263
Refrigeration Tubing Schematics ..............264
Flake Models ..................................264
RF0244/RFS0244/RF0266/RF0300/RF0385/
RF0388/RF0399/RF0644/RF0650 .............264
RF1200/RFS1200 Air-cooled..................265
RF1200/RFS1200 Water-cooled...............266
RF2300/RFS2300 Air-cooled..................268
RF2300/RFS2300 Water-cooled...............270
RF1200C/RFS1200C QuietQube Head Section &
RCU1075 Condensing Unit...................272
RF2300C/RFS2300 QuietQube Head Section &
RCU2375 Condensing Unit...................274
Nugget Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276
RN0244/RNS0244/RN0385/RNS0385 .........276
RNS0308 ....................................277
RN0400/RN1000/RN1400 Air & Water-cooled . 278
RN1000C/RN1200C QuietQube Head Section &
RCU1075/RCU1275 Condensing Unit.........280

Part Number 000007661 11/16 15
Model Numbers
SELF CONTAINED
AIR & WATERCOOLED MODELS
Flake Models
Self Storage
Air-Cooled
Self Storage
Water-
Cooled
Modular Air-
Cooled
Modular
Water-
Cooled
RF0244A – – –
RF0266A – – –
RF0385A – – –
RF0388A – – –
RF0399A – – –
– – RF0300A –
– – RFS0300A –
RF0644A – –
– – RF0650A RF0650W
– – RFS0650A RFS0650W
– – RF1200A RF1200W
– – RFS1200A RFS1200W
– – RF2300A RF2300W
General Information

16 Part Number 000007661 11/16
NUGGET MODELS
Self Storage
Air-Cooled
Self Storage
Water-
Cooled
Modular Air-
Cooled
Modular
Water-
Cooled
RNS0244A – – –
-- – RNS0308A –
RNS0385A – – –
RN0408A – – –
– – RNS1008A –
– – RN1008A RN1009W
– – RN1408A RN1409W
QUIETQUBE MODELS WITH REMOTE CONDENSING
UNITS
Flake Models
QuietQube Head RCU Remote Condensing
Unit
RF1278C RCU1075
RFS1278C RCU1075
RF2378C RCU2375
RFS2378C RCU2375
Nugget Models
QuietQube Head RCU Remote Condensing
Unit
RN1078C RCU1075
RN1278C RCU1275

Part Number 000007661 11/16 17
RACK UNITS
Flake Models
Head Section Rack Remote Condensing
Unit
RF1279R Supplied by Others
RFS1279R Supplied by Others
RF2379R Supplied by Others
RFS2379R Supplied 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 Number Sanitizer Part Number
16 oz. 000000084 16 oz. 9405653
1 gal N/A 1 gal. 9405813
Ice Machine Warranty Information
Warranty information for all ice machine models is
available on our website at www.manitowocice.com.

18 Part Number 000007661 11/16
Ice Machine Heat of Rejection
Series Ice
Machine
Heat of Rejection
Air Conditioning* Peak
RF Flake Models
RF0244A 2400 5000
RF0266A 2400 5000
RF0300A 2400 2400
RF0385A 3500 5200
RF0388A 3500 5200
RF0399A 3500 5200
RF0644A 7700 10250
RF0650A 5200 7700
RF0650W 5200 7700
RF1200A 7500 14000
RF1200W 7500 14000
RF1200C 7500 1400
RF2300A 15700 29500
RF2300W 15700 29500
RF2300C 15700 29500
RFS Flake Models
RFS0300A 2400 5000
RFS0650A 5200 7700
RFS0650W 5200 7700
RFS1200A 7500 14000
RFS1200W 7500 14000
RFS1200C 7500 14000
RFS2300C 15700 19500

Part Number 000007661 11/16 19
Ice Machine Heat of Rejection
Series Ice
Machine
Heat of Rejection
Air Conditioning* Peak
RN Nugget Models
RN0408A 3800 5400
RN1008A 11300 12800
RN1009W 11300 12800
RN1078C 11300 12800
RN1278C 7500 14000
RN1408A 16000 16400
RN1409W 16000 16400
RNS Nugget Models
RNS0244A 2400 5000
RNS0308A 3075 4100
RNS0385 3500 4600
RNS0608A 5200 7700
RNS0609W 5200 7700
RNS1008A 7500 10900
RNS1009W 7500 10900
RNS1078C 7500 14000
*BTU/Hour
NOTE: Because the heat of rejection varies during the ice
making cycle, the figure shown is an average.

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20 Part Number 000007661 11/16