Manitowoc RNS012 Bedienungsanleitung

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

RNS012 & RNS020

Nugget Ice Machines

Part Number STH044 10/13

Manitowoc

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:

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:

!Warning

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.

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 Manitowoc equipment. Visit

our website www.manitowocfsg.com for manual

updates, translations, or contact information for

service agents in your area. If you encounter

problems not covered by this manual, 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.

!Warning

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

Do not use electrical appliances or accessories

other than those supplied by Manitowoc for your

ice machine model.

!Warning

Two or more people or a lifting device are

required to lift this appliance.

!Warning

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

Do not damage the refrigeration circuit when

installing, maintaining or servicing the unit.

!Warning

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

All covers and access panels must be in place

and properly secured, before operating this

equipment.

!Warning

Do not obstruct machine vents or openings.

!Warning

Do not store gasoline or other flammable vapors

or liquids in the vicinity of this or any other

appliance.

!Warning

Do not clean with water jet.

!Warning

It is the responsibility of the equipment owner to

perform a Personal Protective Equipment Hazard

Assessment to ensure adequate protection

during maintenance procedures.

!Warning

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.

Part Number STH044 10/13 1

Table of Contents

General Information

Model Numbers . . . . . . . . . . . . . . . . . . . . .5

Model/Serial Number Location . . . . . . . .5

Manitowoc Cleaner and Sanitizer . . . .5

Ice Machine Warranty Information . . .6

Commercial Warranty . . . . . . . . . . . . . . .6

Residential Warranty . . . . . . . . . . . . . . . .9

Installation

Location of Ice Machine . . . . . . . . . . . . . .13

Ice Machine Clearance Requirements . .14

Ice Machine Heat of Rejection . . . . . . . . .14

Electrical Service . . . . . . . . . . . . . . . . . . .15

Circuit Ampacity . . . . . . . . . . . . . . . . .15

Ice Machine Head Section Water

Supply and Drains . . . . . . . . . . . . . . . . . .16

Potable Water Supply . . . . . . . . . . . . .16

Potable Water Inlet Lines . . . . . . . . . .16

Drain Connections . . . . . . . . . . . . . . . .17

Operation

Ice Making Sequence of Operation . . . . .19

RNS012 - RNS020 Nugget Machines .19

Touch Pad Sequence of Operation . . .21

Sequence of Operation Chart . . . . . . .22

Water Level Check . . . . . . . . . . . . . . .23

2 Part Number STH044 10/13

Maintenance

Manitowoc’s Cleaning Technology . . . . 26

Exterior Cleaning . . . . . . . . . . . . . . . . 27

Preventative Maintenance Procedure . . 28

Heavily Scaled Cleaning Procedure . . . . 31

Cleaning And Sanitizing Procedure . . . . 33

Component Disassembly For Cleaning And

Sanitizing . . . . . . . . . . . . . . . . . . . . . . . . . 36

General Information . . . . . . . . . . . . . . 36

Water Dump Valve . . . . . . . . . . . . . . . 50

Cleaning the Condenser . . . . . . . . . . . 52

Removal from Service/Winterization . . . 53

General . . . . . . . . . . . . . . . . . . . . . . . . 53

Troubleshooting

SafeGuard Feature . . . . . . . . . . . . . . . . . . 55

SafeGuards . . . . . . . . . . . . . . . . . . . . . . . 57

No Water . . . . . . . . . . . . . . . . . . . . . . 57

No Ice Production . . . . . . . . . . . . . . . . 58

Ice Machine Will Not Run Diagnostics . . 60

Refrigeration Diagnostics . . . . . . . . . . . . 66

Before Beginning Service . . . . . . . . . . 66

Installation/Visual Inspection Checklist 66

Water System Checklist . . . . . . . . . . . 67

Ice Production/Quality Check . . . . . . . 68

Analyzing Discharge Pressure . . . . . . 69

Analyzing Suction Pressure . . . . . . . . 71

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