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