Manitowoc S Model User Manual

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S Model

Ice Machines

Service

Manual

Thank you for selecting a Manitowoc Ice Machine, the dependability leader in ice making equipment and related products.

With proper installation, care and maintenance, your new Manitowo c Ice Machine will provide you with many years of

This manual is updated as new information and models are released. Visit our website for the latest manual. www.manitowocice.com

reliable and economical performance.

Part Number 80-1480-3

01/2005

Safety Notices

Procedural Notices

As you work on a S-Series Ice Machine, be sure to pay close attention to the safety notices in this manual. Disregarding the notices may lead to serious injury and/ or damage to the ice machine.

Throughout this manual, you will see the following types of safety notices:

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

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 ice machine. Be sure to read the Caution statement before proceeding, and work carefully.

As you work on a S-Series Ice Machine, be sure to read the procedural notices in this manual. These notices supply helpful information which may assist you as you work.

Throughout this manual, 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 ice production and troublefree operation of you Manitowoc Ice Machine. Read and understand this manual. It contains valuable care and maintenance information. If you encounter problems not covered by this manual, do not proceed, contact Manitowoc Ice, Inc. We will be happy to provide assistance.

Important

Routine adjustments and maintenance procedures outlined in this manual are not covered by the warranty.

We reserve the right to make product improvements at any time.

Specifications and design are subject to change without notice.

Attend A Manitowoc Factory Service School

• Improve Your Service Techniques

• Network with Your Peers

• 4 1/2 Days of Intensive Training on Manitowoc Ice Machines

• Extensive “Hands On” Training on a Variety of Equipment

• Breakfast, Lunch and Hotel Room Included with Tuition

• Contact Your Distributor or Manitowoc Ice, Inc. for Details OR

• Visit Our Website at www.manitowocice.com for School Dates

MANITOWOC ICE, INC.

2110 South 26th Street P.O. Box 1720

Manitowoc, WI 54221-1720

Phone: (920) 682-0161

Service Fax: (920) 683-7585

Web Site - www.manitowocice.com

Section 1 General Information

Table of Contents

Model Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

How to Read a Model Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Ice Cube Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Bin Caster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Ice Bagger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Guardian Sachet Packets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Arctic Pure Water Filter System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Manitowoc Cleaner and Sanitizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

AuCS® Automatic Cleaning System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Dispenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Model/Serial Number Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Owner Warranty Registration Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Warranty Coverage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Labor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Exclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Authorized Warranty Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Section 2 Installation Instructions

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Ice Machine Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Ice Storage Bin Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Remote Condenser Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Location of Ice Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Ice Machine Heat of Rejection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Removing Drain Plug and Leveling the Ice Storage Bin . . . . . . . . . . . . . . . . 2-8

Air-Cooled Baffle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Electrical Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Self-Contained Electrical Wiring Connections . . . . . . . . . . . . . . . . . . . . . . . . 2-10

For United Kingdom Only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

S320/S420 Air and Water-Cooled Ice Machines . . . . . . . . . . . . . . . . . . . . 2-1

S600 Air and Water-Cooled Ice Machines . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

S600 Remote Ice Machines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

S300/S450/S500/S850/S1000 Air and Wate r-Cooled Ice Machines . . . . . 2-3

S500/S850/S1000 Remote Ice Machines . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

S1400 / S1800 Air and Water-Cooled Ice Machines . . . . . . . . . . . . . . . . . 2-5

S1400 / S1800 Remote Ice Machines . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

30 inch (76 cm) Ice Storage Bins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

22 Inch (56 cm) Ice Storage Bins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

48 Inch (130 cm) Ice Storage Bins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

JC0495/JC0895/JC1395 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Minimum Circuit Ampacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Electrical Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Self Contained Ice Machine 115/1/60 or 208-230/1/60 . . . . . . . . . . . . . . . . 2-10

Self Contained Ice Machine 208-230/3/60 . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

Self Contained Ice Machine 230/1/50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

Part No. 80-1480-3 1

Table of Contents (continued)

Remote Electrical Wiring Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

Remote Ice Machine With Single Circuit Model Condenser

115/1/60 or 208-230/1/60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

Remote Ice Machine With Single Circuit Model Condenser

208-230/3/60 or 380-415/3/50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

Remote Ice Machine With Single Circuit Model Condenser

230/1/50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

Water Supply and Drain Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

Water Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

Water Inlet Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

Drain Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

Cooling Tower Applications

(Water-Cooled Models) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

Water Supply and Drain Line Sizing/Connections . . . . . . . . . . . . . . . . . . . . 2-13

Remote Condenser/Line Set Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

Remote Ice Machines

Refrigerant Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

Guidelines for Routing Line Sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

Calculating Remote Condenser Installation Distances . . . . . . . . . . . . . . . . 2-16

Lengthening or Reducing Line Set Lengths . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

Connecting A Line Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

Remote Receiver Service Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

Remote Ice Machine Usage with Non-Manitowoc Multi-Circuit Condensers 2-18

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

Head Pressure Control Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

Fan Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

Internal Condenser Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

Condenser DT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

Refrigerant Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

Quick Connect Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

Non-Manitowoc Multi-Circuit Condenser Sizing Chart . . . . . . . . . . . . . . . . . 2-19

Installation Check List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20

Additional Checks for Remote Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20

Before Starting the Ice Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21

AuCS® Automatic Cleaning System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21

Section 3 Ice Machine Operation

Component Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Sequence Of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Initial Start-Up or Start-Up After Automatic Shut-Off . . . . . . . . . . . . . . . . . . 3-2

Freeze Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Harvest Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Automatic Shut-Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Safety Timers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Warm Water Rinse Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Operational Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Water Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Ice Thickness Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Harvest Sequence Water Purge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

2 Part No. 80-1480-3

Section 4 Maintenance

Table of Contents (continued)

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Ice Machine Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Exterior Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Cleaning the Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Water-Cooled Condenser and Water Regulating Valve . . . . . . . . . . . . . . . . . 4-2

AlphaSan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Guardian . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Sachet Replacement Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Sachet Replacement Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Clean Up Procedure for Damaged Packet . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Interior Cleaning and Sanitizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Cleaning Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Sanitizing Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

Removal of Parts For Cleaning/Sanitizing . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

Removing the Front Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12

Removal from Service/Winterization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

Self-Contained Air-Cooled Ice Machines . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

Water-Cooled Ice Machines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

Remote Ice Machines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

AuCS Accessory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

Section 5 Before Calling For Service

Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Safety Limit Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Section 6 Electrical System

Energized Parts Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Wiring Diagram Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18

Component Specifications and Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . 6-28

Self-Contained Air- And Water-Cooled Models . . . . . . . . . . . . . . . . . . . . . 6-1

Remote Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Self-Contained Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Remote Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11

Wiring Diagram Legend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18

S300/S320/S420/ S450- Self Contained - 1 Phase . . . . . . . . . . . . . . . . . . 6-19

S500/S600/S850/S1000 - Self Contained - 1 Phase . . . . . . . . . . . . . . . . . 6-20

S850/S1000 - Self Contained - 3 Phase . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-21

S500/S600/S850/S1000 - Remote - 1 Phase . . . . . . . . . . . . . . . . . . . . . . . 6-22

S850/S1000 - Remote - 3 Phase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-23

S1400/S1800 - Self-Contained - 1 Phase . . . . . . . . . . . . . . . . . . . . . . . . . . 6-24

S1400/S1800 - Self-Contained - 3 Phase . . . . . . . . . . . . . . . . . . . . . . . . . . 6-25

S1400/S1800 - Remote - 1 Phase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-26

S1400/S1800 - Remote - 3 Phase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-27

Main Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-28

Bin Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-28

Compressor Electrical Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-30

PTCR Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-31

Diagnosing Start Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-34

ICE/OFF/CLEAN Toggle Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-34

Electronic Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-35

Part No. 80-1480-3 3

Section 7 Refrigeration System

Table of Contents (continued)

Ice Thickness Probe (Harvest Initiation) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-37

How The Probe Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-37

Harvest Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-37

Freeze Time Lock-In Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-37

Maximum Freeze Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-37

Ice Thickness Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-37

Diagnosing Ice Thickness Control Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . 6-38

Water Level Control Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-39

Water Level Probe Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-39

Water Inlet Valve Safety Shut-Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-39

Freeze Cycle Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-39

Harvest Cycle Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-39

Diagnosing Water Level Control Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . 6-40

Diagnosing An Ice Machine That Will Not Run . . . . . . . . . . . . . . . . . . . . . . . . 6-42

Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

Self-Contained Air or Water -Cooled Models . . . . . . . . . . . . . . . . . . . . . . . . 7-1

Remote Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

S1400/S1800 Self-Contained Tubing Schematic . . . . . . . . . . . . . . . . . . . . 7-6

S1400/S1800 Remote Tubing Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7

Operational Analysis (Diagnostics) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8

Before Beginning Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9

Ice Production Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9

Installation/Visual Inspection Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10

Water System Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10

Ice Formation Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11

Safety Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-13

Analyzing Discharge Pressure

During Freeze or Harvest Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-16

Analyzing Suction Pressure

During Freeze Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-17

Single Expansion Valve Ice Machines -

Comparing Evaporator Inlet and Outlet Temperatures . . . . . . . . . . . . . . . . 7-19

Harvest Valve Temperature Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-20

Discharge Line Temperature Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-21

How to Use the Refrigeration System

Operational Analysis Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-22

Refrigeration System Operational Analysis Tables . . . . . . . . . . . . . . . . . . . 7-23

Refrigeration System Operational Analysis Tables . . . . . . . . . . . . . . . . . . . 7-24

Harvest Pressure Regulating

(H.P.R.) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-25

Headmaster Control Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-27

Pressure Control Specifications and Diagnostics . . . . . . . . . . . . . . . . . . . . . 7-29

Fan Cycle Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-29

High Pressure Cut-Out (HPCO) Control . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-29

Cycle Time/24 Hour Ice Production/Refrigerant Pressure Charts . . . . . . . . . 7-30

S300 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-31

S320 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-32

S420 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-33

S450 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-34

S500 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-35

S600 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-36

S850 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-38

S1000 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-39

S1400 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-41

S1800 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-42

4 Part No. 80-1480-3

Table of Contents (continued)

Refrigerant Recovery/Evacuation and Recharging . . . . . . . . . . . . . . . . . . . . 7-44

Normal Self-Contained Model Procedures . . . . . . . . . . . . . . . . . . . . . . . . . 7-44

Normal Remote Model Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-46

System Contamination Clean-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-50

Replacing Pressure Controls Without

Removing Refrigerant Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-52

Filter-Driers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-54

Total System Refrigerant Charges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-55

Refrigerant Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-56

Refrigerant Re-Use Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-57

HFC Refrigerant Questions and Answers . . . . . . . . . . . . . . . . . . . . . . . . . . 7-58

Part No. 80-1480-3 5

Table of Contents (continued)

6 Part No. 80-1480-3

Section 1 General Information

Section 1

General Information

Model Numbers

This manual covers the following models:

Self-Contained

Air-Cooled

SD0302A SY0304A SD0322A SY0324A SR0420A SD0422A SY0424A SD0452A SY0454A SR0500A SD0502A SY0504A SD0602A SY0604A SR0850A SD0852A SY0854A SD1002A SY1004A SD1402A SY1404A SR1800A SD1802A SY1804A

Self-Contained

Water-Cooled

SD0303W SY0305W SD0323W SY0325W SR0421W SD0423W SY0425W SD0453W SY0455W

SR501W SD0503W SY0505W SD0603W SY0605W SR0851W SD0853W SY0855W SD1003W SY1005W SD1403W SY1405W SR1801W SD1803W SY1805W

Remote

----

SD0592N SY0594N

SD0692N SY0694N SR0890N SD0892N SY0894N SD1092N SY1094N SD1492N SY1494N SR1890N SD1892N SY1894N

How to Read a Model Number

9 REMOTE

AIR-COOLED

# CUBE SIZE

0 REGULAR 1 REGULAR 2 DICE 3 DICE 4 HALF-DICE 5 HALF-DICE

CONDENSER TYPE

AIR-COOLED WAT ER-COOLED AIR-COOLED WAT ER-COOLED AIR-COOLED WAT ER-COOLED

S Y 1094 N

ICE MACHINE

MODEL

ICE CUBE SIZE

R REGULAR D DICE Y HALF DICE

ICE MACHINE

SERIES

CONDENSER TYPE

A SELF-CONTAINED AIR-COOLED W SELF-CONTAINED WAT ER-COOLED N REMOTE AIR-COOLED

Ice Cube Sizes

Regular

1-1/8" x 1-1/8" x 7/8"

2.86 x 2.86 x 2.22 cm

Dice

7/8" x 7/8" x 7/8"

2.22 x 2.22 x 2.22 cm

Half Dice

3/8" x 1-1/8" x 7/8"

0.95 x 2.86 x 2.22 cm

NOTE: Model numbers ending in 3 indicate a 3-phase unit. Example: SY1004A3

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

PERSONAL INJURY POTENTIAL

Remove all ice machine panels before lifting and installing.

Part Number 80-1480-3 1-1

General Information Section 1

Accessories

Contact your Manitowoc distributor for these optional accessories:

BIN CASTER

Replaces standard legs.

ICE BAGGER

Maximize profits from bagged ice sales with this convenient accessory. This sturdy unit rests on the bin door frame, and adapts for left or right side filling.

GUARDIANf SACHET PACKETS

Guardian sachet packets release chlorine dioxide on a controlled basis to inhibit the growth of bacteria and slime.

Guardian sachet packets are available through your local Manitowoc Ice Machine dealer.

ARCTIC PUREf WATER FILTER SYSTEM

Engineered specifically for Manitowoc ice machines, This water filter is an efficient, dependable, and affordable method of inhibiting scale formation, filtering sediment, and removing chlorine taste and odor.

MANITOWOC CLEANER AND SANITIZER

Manitowoc Ice Machine Cleaner and Sanitizer are available in convenient 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 ounce Bottle - 94-0546-3 16 ounce Bottle - 94-0565-3

AuCS®-SO - 94-0546-3 AuCS®-SO - 94-0565-3

AuCS®-SI - 40-1326-3 AuCS®-SI - 40-1327-3

AUCS® AUTOMATIC CLEANING SYSTEM

This accessory reduces equipment cleaning expense. The AuCS® accessory monitors ice making cycles and initiates cleaning procedures automatically.

DISPENSER

A counter-top dispenser is ideal for cafeterias and many types of self-service facilities. Manitowoc auto-fill, floorstanding ice dispensers meet the strict sanitary requirements of the food service, lodging and health care industries.

1-2 Part Number 80-1480-3

Section 1 General Information

Model/Serial Number Location

These numbers are required when requesting information from your local Manitowoc distributor, or Manitowoc Ice, Inc.

SV13147

The model and serial number are listed on the MODEL/ SERIAL NUMBER DECAL affixed to the ice machine, remote condenser and storage bin.

MODEL/SERIAL DECAL

LOCATION

Model/Serial Number Location

Part Number 80-1480-3 1-3

General Information Section 1

Owner Warranty Registration Card

GENERAL

The packet containing this manual also includes warranty information. Warranty coverage beg ins the day your new ice machine is installed.

Important

Complete and mail the OWNER WARRANTY REGISTARATION CARD as soon as possible to validate the installation date.

If you do not return your OWNER WARRANTY REGISTRATION CARD, Manitowoc will use the date of sale to the Manitowoc Distributor as the first day of warranty coverage for your new ice machine.

Warranty Coverage

GENERAL

The following Warranty outline is provided for your convenience. For a detailed explanation, read the warranty bond shipped with each product.

Contact your local Manitowoc Distributor, Manitowoc Ice, Inc. or visit our website at www .manitowocice.com if you need further warranty information.

Important

This product is intended exclusively for commercial application. No warranty is extended for personal, family, or household purposes.

PARTS

1. Manitowoc warrants the ice machine against defects in materials and workmanship, under normal use and service for three (3) years from the date of original installation.

2. The evaporator and compressor are covered by an additional two (2) year (five years tota l) warranty beginning on the date of the original installation.

LABOR

1. Labor required to repair or replace defective components is covered for three (3) years from the date of original installation.

2. The evaporator is covered by an additional two (2) year (five years total) labor warranty beginning on the date of the original installation.

EXCLUSIONS

The following items are not warranty coverage:

1. Normal maintenance, adjustments and cleaning.

2. Repairs due to unauthorized modifications to the ice machine or use of non-standard parts without prior written approval from Manitowoc Ice, Inc.

3. Damage caused by improper inst allation of the ice machine, electrical supply , water supp ly or drainage, or damage caused by floods, storms, or other acts of God.

4. Premium labor rates due to holidays, overtime, etc.; travel time; flat rate service call charges; mileage and miscellaneous tools and material charges not listed on the payment schedule. Additional labor charges resulting from the inaccessibility of equipment are also excluded.

5. Parts or assemblies subjected to misuse, abuse, neglect or accidents.

6. Damage or problems caused by installation, cleaning and/or maintenance procedures

inconsistent with the technical instructions provided in this manual.

7. This product is intended exclusively for commercial application. No warranty is extended

for personal, family, or household purposes.

AUTHORIZED WARRANTY SERVICE To comply with the provisions of the warranty, a

refrigeration service company qualified and authorized by a Manitowoc distributor, or a Contracted Service Representative must perform the warranty repair.

NOTE: If the dealer you purchased the ice machine from is not authorized to perform warranty service, contact your Manitowoc distributor or Manitowoc Ice, Inc. for the name of the nearest authorized service representative.

Service Calls Normal maintenance, adjustments and cleaning as

outlined in this manual are not covered by the warranty. If you have followed the procedures listed on

page 5-1 of this manual, and the ice machine still does not perform properly, call your authorized service company.

included in the ice machine’s

1-4 Part Number 80-1480-3

Section 2 Installation Instructions

Section 2

Installation Instructions

General

These instructions are provided to assist the qualified installer. Check your local Yellow Pages for the name of the nearest Manitowoc distributor , or ca ll Manitowoc Ice, Inc. for information regarding start-up services.

Ice Machine Dimensions

S320/S420 AIR AND WATER-COOLED ICE MACHINES

Failure to follow these installation guidelines may affect warranty coverage.

ELECTRICAL

Important

2.20" (5.58cm)

5.0" (12.7cm)

AUCS

ELECTRICAL

19.3" (49.0 cm)

4" (10cm)

2.6" (6.6cm)

1.8" (4.6cm)

3.25" (8.3cm)

5.06" (12.85cm)

6.68" (16.96cm)

8.49" (21.56cm)

1.1" (2.6cm)

17.0" (43.2cm)

4.21" (10.69cm)

2.85" (7.30cm)

AUCS

TUBING &

MODULAR

WIRE

DRAIN 1/2"NPTF

CONDENSER WATER OUTLET 1/2"FPT (Water-Cooled Only)

AUXILLARY BASE DRAIN

1/2"CPVC SOCKET WATER INLET 3/8"FPT

CONDENSER WATER INLET 3/8"FPT (Water-Cooled Only)

Ice Machine Dimension W Dimension D Dimension H

S320 22 in. (55.9 cm) 24.5 in. (62.2 cm) 21.5 in (54.6 cm) S420 22 in. (55.9 cm) 24.5 in. (62.2 cm) 21.5 in (54.6 cm)

Part Number 80-1480-3 2-1

Installation Instructions Section 2

S600 AIR AND WATER-COOLED ICE MACHINES

1.50" (3.81cm)

8.50" (21.60cm)

6.50" (16.5cm)

2.61" (6.62cm)

1.81" (4.59cm)

5.06" (12.85cm)

6.68" (16.96cm)

7.75" (19.7 cm)

17.25" (43.81 cm)

2.85" (7.30cm)

4.25" (10.81 cm)

ELECTRICAL

AUCS

CONNECTIONS

AUXILLARY BASE DRAIN 1/2"CPVC SOCKET

WATER INLET 3/8"FPT

DRAIN 1/2"NPTF

CONDENSER WATER OUTLET 1/2"FPT (Water-Cooled Only)

CONDENSER WATER INLET 3/8"FPT (Water-Cooled Only)

Ice Machine Dimension A Dimension B Dimension W Dimension D Dimension H

S600 11.5 in (29.2 cm) 9.0 in (22.9 cm) 30 in. (76.2 cm) 24.50 in. (62.2 cm) 21.5 in (54.6 cm)

S600 REMOTE ICE MACHINES

1.50" (3.81cm)

1.81"

2.61" (6.62cm)

(4.59cm)

5.06" (12.85cm)

6.68" (16.96cm)

11.50" (29.21cm)

6.25" (15.88cm)

16.0" (40.64cm)

ELECTRICAL

REMOTE CONDENSER ELECTRICAL

AUXILLARY BASE DRAIN 1/2"CPVC SOCKET

WATER INLET 3/8"FPT

DRAIN 1/2"NPTF

REFRIGERANT LIQUID LINE

REFRIGERANT DISCHARGE LINE

Ice Machine Dimension A Dimension B Dimension W Dimension D Dimension H

S600 11.5 in (29.2 cm) 9.0 in (22.9 cm) 30 in. (76.2 cm) 24.50 in. (62.2 cm) 21.5 in (54.6 cm)

2-2 Part Number 80-1480-3

Section 2 Installation Instructions

S300/S450/S500/S850/S1000 AIR AND WATER-COOLED ICE MACHINES

ELECTRICAL

2.20" (5.58cm)

2.61" (6.62cm)

SV3143

1.81" (4.59cm)

5.06" (12.85cm)

6.68" (16.96cm)

8.49" (21.56cm)

1.06 (2.7cm)

25.52" (64.82cm)

4.21" (10.69cm)

2.85" (7.30cm)

AUCS

CONNECTIONS

CONDENSER WATER OUTLET 1/2"FPT (Water-Cooled Only)

AUXILLARY BASE DRAIN 1/2"CPVC SOCKET

WATER INLET 3/8"FPT

DRAIN 1/2"NPTF

CONDENSER WATER INLET 3/8"FPT (Water-Cooled Only)

Width, Depth, and Height Dimensions

Ice Machine Dimension W Dimension D Dimension H

S300 30 in. (76.2 cm) 24.50 in. (62.2 cm) 16.5 in (41.9 cm) S450 30 in. (76.2 cm) 24.50 in. (62.2 cm) 21.5 in (54.6 cm) S500 30 in. (76.2 cm) 24.50 in. (62.2 cm) 21.5 in (54.6 cm) S850 30 in. (76.2 cm) 24.50 in. (62.2 cm) 26.5 in (67.3 cm)

S1000 30 in. (76.2 cm) 24.50 in. (62.2 cm) 26.5 in (67.3 cm)

SV3143B

Electrical and AuCS Dimensions

Ice Machine

Dimension A Dimension B Dimension C Dimension E Dimension F

S300 14.00 in (35.6 cm) NA 10.0 in (25.4 cm) 6.0 in (15.24 cm) 4.0 in (10.16 cm) S450 19.25 in (48.9 cm) 17.5 in (44.45 cm) 8.5 in (21.6 cm) 8.5 in (21.6 cm) 6.5 in (16.5 cm) S500 19.25 in (48.9 cm) 17.5 in (44.45 cm) 8.5 in (21.6 cm) 8.5 in (21.6 cm) 6.5 in (16.5 cm) S850 23.82 in (60.5 cm) 22.32 in (56.69 cm) 8.5 in (21.6 cm) 8.5 in (21.6 cm) 6.5 in (16.5 cm)

S1000 23.82 in (60.5 cm) 22.32 in (56.69 cm) 8.5 in (21.6 cm) 8.5 in (21.6 cm) 6.5 in (16.5 cm)

Part Number 80-1480-3 2-3

Electrical AuCS

Installation Instructions Section 2

S500/S850/S1000 REMOTE ICE MACHINES

ELECTRICAL

2.20" (5.58cm)

1.81" (4.59cm)

1.06 (2.69cm)

6.12" (15.54cm)

REMOTE CONDENSER ELECTRICAL

2.61" (6.62cm)

SV3146

5.06" (12.85cm)

6.68" (16.96cm)

12.26" (42.27cm)

16.64" (64.82cm)

REFRIGERANT WATER INLET 3/8"FPT

DRAIN 1/2"NPTF

LIQUID LINE

REFRIGERANT DISCHARGE LINE

SV3146B

Ice Machine Dimension A Dimension B Dimension W Dimension D Dimension H

S300 14.00 in (35.6 cm) NA 30 in. (76.2 cm) 24.50 in. (62.2 cm) 16.5 in (41.9 cm) S450 19.25 in (48.9 cm) 17.5 in (44.45 cm) 30 in. (76.2 cm) 24.50 in. (62.2 cm) 21.5 in (54.6 cm) S500 19.25 in (48.9 cm) 17.5 in (44.45 cm) 30 in. (76.2 cm) 24.50 in. (62.2 cm) 21.5 in (54.6 cm) S850 23.82 in (60.5 cm) 22.32 in (56.69 cm) 30 in. (76.2 cm) 24.50 in. (62.2 cm) 26.5 in (67.3 cm)

S1000 23.82 in (60.5 cm) 22.32 in (56.69 cm) 30 in. (76.2 cm) 24.50 in. (62.2 cm) 26.5 in (67.3 cm)

2-4 Part Number 80-1480-3

Section 2 Installation Instructions

S1400 / S1800 AIR AND WATER-COOLED ICE MACHINES

2.50" (6.35cm)

11.0" (27.9cm)

5.75" (14.6cm)

3.0" (7.6cm)

3.75" (9.5cm)

4.0" (10.2cm)

1.1" (2.8cm)

7.8" (19.8cm)

10.25" (26.0cm)

11.0" (27.9cm)

2.0" (5.1cm)

ELECTRICAL

WATER INLET 3/8"FPT

AUXILLARY BASE DRAIN 1/2"CPVC SOCKET

AuCS

Connections

DRAIN 1/2"NPTF

CONDENSER WATER OUTLET 1/2"FPT (Water-Cooled Only)

CONDENSER WATER INLET 3/8"FPT (Water-Cooled Only)

Width, Depth, and Height Dimensions

Ice Machine Dimension W Dimension D Dimension H

S1400 48 in. (121.9 cm) 24.5 in. (62.2 cm) 29.5 in (74.9 cm) S1800 48 in. (121.9 cm) 24.5 in. (62.2 cm) 29.5 in (74.9 cm)

Electrical and AuCS Dimensions

Ice Machine

Dimension A Dimension B Dimension C Dimension E Dimension F

S1400 22.75 in (57.8 cm) 22.25 in (56.5 cm) 14.0 in (35.6 cm) 9.5 in (24.1 cm) 7.5 in (19.1 cm) S1800 22.75 in (57.8 cm) 22.25 in (56.5 cm) 14.0 in (35.6 cm) 9.5 in (24.1 cm) 7.5 in (19.1 cm)

Electrical AuCS

S1400 / S1800 REMOTE ICE MACHINES

2.50" (6.35cm)

4.0" (10.2cm)

1.1" (2.8cm)

7.8" (19.8cm)

10.25" (26.0cm)

11.0" (27.9cm)

2.0" (5.1cm)

23.75" (60.3cm)

28.25" (71.8cm)

11.0" (27.9cm)

8.0" (20.3cm)

5.75" (14.6cm)

3.0" (7.6cm)

3.75" (9.5cm)

Ice Machine Dimension A Dimension B Dimension W Dimension D Dimension H

S1400 22.75 in (57.8 cm) 22.25 in (56.5 cm) 48 in. (121.9 cm) 24.5 in. (62.2 cm) 29.5 in (74.9 cm) S1800 22.75 in (57.8 cm) 22.25 in (56.5 cm) 48 in. (121.9 cm) 24.5 in. (62.2 cm) 29.5 in (74.9 cm)

ELECTRICAL

WATER INLET 3/8"FPT

AUXILLARY BASE DRAIN 1/2"CPVC SOCKET

AuCS

Connections

DRAIN 1/2"NPTF

CONDENSER WATER OUTLET 1/2"FPT (Water-Cooled Only)

REFRIGERANT DISCHARGE LINE

CONDENSER WATER INLET 3/8"FPT (Water-Cooled Only)

REFRIGERANT LIQUID LINE

Part Number 80-1480-3 2-5

Installation Instructions Section 2

Ice Storage Bin Dimensions

30 INCH (76 CM) ICE STORAGE BINS

SV1609

Bin Model Dimension A Dimension B

B170 29.5 in (74.9 cm) 19.1 in (48. 5 cm) B420 34.0 in (86.3 cm) 32.0 in (81. 3 cm) B570 34.0 in (86.3 cm) 44.0 in (111.7 cm)

22 INCH (56 CM) ICE STORAGE BINS

48 INCH (130 CM) ICE STORAGE BINS

SV1297

B970

Remote Condenser Dimensions

JC0495/JC0895/JC1395

SV1614

Bin Model Dimension A Dimension B

B320 34.0 in (86.3 cm) 32.0 in (81. 3 cm) B420 34.0 in (86.3 cm) 44.0 in (111.7 cm)

SV1297

2-6 Part Number 80-1480-3

Section 2 Installation Instructions

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 air temperature must be at least 35°F (1.6°C), but must not exceed 110°F (43.4°C).

• Remote air cooled - The air temperature must be at least -20°F (-29°C), but must not exceed 120°F (49°C)

• The location must not be near heat-generating equipment or in direct sunlight and must be protected from weather.

• The location must not obstruct air flow through or around the ice machine. Refer to the chart below for clearance requirements.

S300 / S320/

S420/ S450/S500/ S600/S850/S1000

Top/Sides 8" (20.3 cm) 8" (20.3 cm)

Back 5" (12.7 cm) 5" (12.7 cm)

S1400/S1800

Top/Sides 24" (61.0 cm) 8" (20.3 cm)

Back 12" (30.5 cm) 5" (12.7 cm)

*There is no minimum clearance required for water-cooled or

remote ice machines. This value is recommended for efficient operation and servicing only.

Self-Contained

Air-Cooled

Self-Contained

Air-Cooled

Water-Cooled

and Remote*

Water-Cooled

and Remote*

Ice Machine Heat of Rejection

Series

Ice Machine

S300 3800 6000 S320 3800 6000 S420 7000 9600 S450 7000 9600 S500 7000 9600 S600 9000 13900

S850 12000 18000 S1000 16000 22000 S1400 19000 28000 S1800 24000 36000

B.T.U./Hour Because the heat of rejection varies during the ice making cycle,

the figure shown is an average.

Air Conditioning

Heat of Rejection

Ice machines, like other refrigeration equipment, reject heat through the condenser. It is helpful to know the amount of heat rejected by the ice machine when sizing air conditioning equipment where self -c on tained air cooled ice machines are installed.

This information is also necessary when evaluating the benefits of using water-cooled or remote condensers to reduce air conditioning loads. The amount of heat added to an air conditioned environment by an ice machine using a water-cooled or remote condenser is negligible.

Knowing the amount of heat rejected is also important when sizing a cooling tower for a water-cooled condenser. Use the peak figure for sizing the cooling tower.

Peak

Caution

The ice machine must be protected if it will be subjected to temperatures below 32°F (0°C). Failure caused by exposure to freezing temperatures is not covered by the warranty. See “Removal from Service/Winterization”.

Part Number 80-1480-3 2-7

Installation Instructions Section 2

Removing Drain Plug and Leveling the Ice Storage Bin

1. Remove threaded plug from drain fitting.

2. Screw the leveling legs onto the bottom of the bin.

3. Screw the foot of each leg in as far as possible.

Caution

The legs must be screwed in tightly to prevent them from bending.

4. Move the bin into its final position.

5. Level the bin to assure that the bin door closes and seals properly . Use a level on top of the bin. T urn the base of each foot as necessary to level the bin.

6. Inspect bin gasket prior to ice machine installation. (Manitowoc bins come with a closed cell foam gasket installed along the top surface of the bin.)

7. Remove all panels from ice machine before lifting. Remove both front panels, top cover, left and right side panels.

8. Install ice machine on bin.

Air-Cooled Baffle

SELF-CONTAINED AIR-COOLED ONLY The air-cooled baffle prevents condenser air from

recirculating. To install:

1. Remove the back panel screws next to the condenser.

2. Align the mounting holes in the air baffle with the screw holes and reinstall the screws.

SCREWS

AIR

BAFFLE

THREAD LEVELING LEG INTO BASE OF

CABINET

SV1607

Air Baffle

SV1606

Leveling Leg and Foot

2-8 Part Number 80-1480-3

Section 2 Installation Instructions

Electrical Service

GENERAL

Warning

All wiring must conform to local, state and national codes.

VOLTAGE

The maximum allowable voltage variation is ±1 0% of the rated voltage at ice machine start-up (when the electrical load is highest).

Warning

The ice machine must be grounded in accordance with national and local electrical codes.

Observe correct polarity of incoming line voltage.

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).

MINIMUM CIRCUIT AMPACITY

The minimum circuit ampacity is used to help select the wire size of the electrical supply. (Minimum circuit ampacity is not the ice machine’s running amp load.)

The wire size (or gauge) is also dependent upon location, materials used, length of run, etc., so it must be determined by a qualified electrician.

ELECTRICAL REQUIREMENTS

Refer to Ice Machine Model/Serial Plate for voltage/ amperage specifications.

Important

S Series Ice Machines (* indicates preliminary data)

Air-Cooled Water Cooled Remote

Maximum

Breaker

15 9.9 15 8.9 15 9.9 20 12.6 20 11.2 20 12.0

20 13.4 20 12.0 20 13.0 40 21.9 40 20.5 40 21.5

Minimum

Circuit Amps

Ice Machine

S300

S320

S420/S450

S500

S600

S850

S1000

S1400

S1800

Voltage

Phase

Cycle

115/1/60 20 12.9 20 12.1 N/A N/A 230/1/50 15 6.4 15 5.9 N/A N/A 115/1/60 15 11.3 15 10.5 N/A N/A

208-230/1/60 15 6.0 15 5.6 N/A N/A

230/1/50 15 6.0 15 5.6 N/A N/A 115/1/60 20 13.6 20 12.9 N/A N/A

208-230/1/60 15 6.3 15 5.9 N/A N/A

230/1/50 15 6.7 15 6.4 N/A N/A 115/1/60 20 13.0 20 12.3 20 14.1

208-230/1/60 15 7.3 15 6.9 N/A N/A

230/1/50 15 6.5 15 5.9 N/A N/A

208-230/1/60 15 8.3 15 7.9 15 8.9

230/1/50 15 6.7 15 6.1 15 7.1 208-230/1/60 20 11.3 20 10.3 20 10.6 208-230/3/60 15 7.8 15 6.8 15 7.8

230/1/50 20 10.5 20 9.1 20 9.7 208-230/1/60 20 13.6 20 12.6 20 12.8 208-230/3/60

230/1/50 208-230/1/60 30 17.5 30 16.1 30 17.1 208-230/3/60 20 13.2 20 11.8 20 12.8

230/1/50 30 15.1 30 13.7 30 14.7 208-230/1/60 40 23.5 40 22.1 40 23.1 208-230/3/60

230/1/50

Fuse/Circuit

Maximum

Fuse/Circuit

Breaker

Minimum

Circuit Amps

Maximum

Fuse/Circuit

Breaker

Minimum

Circuit Amps

Part Number 80-1480-3 2-9

Installation Instructions Section 2

Self-Contained Electrical Wiring Connections

Warning

These diagrams are not intended to show proper wire routing, wire sizing, disconnects, etc., only the correct wire connections.

All electrical work, including wire routing and grounding, must conform to local, state and national electrical codes.

Though wire nuts are shown in the drawin gs, th e ice machine field wiring connections may use either wire nuts or screw terminals.

SELF CONTAINED ICE MACHINE 115/1/60 OR 208-230/1/60

N=115V

L2=208-230V

GROUND

SELF CONTAINED ICE MACHINE 208-230/3/60

GROUND

ICE MACHINE

SV1190

CONNECTIONS

TO SEP ARATE

FUSE/BREAKER

GROUND

SELF CONTAINED ICE MACHINE 230/1/50

SV1258

ICE MACHINE

CONNECTIONS

TO SEPARATE

FUSE/BREAKER

SV1191

GROUND

ICE MACHINE

CONNECTIONS

GROUND

TO SEPARATE

FUSE/BREAKER.

DISCONNECT ALL

POLES.

For United Kingdom Only

As the colors of the wires in the mains lead of the appliance may not correspond with the colored markings identifying the terminals in your plug, proceed as follows:

• The wire which is colored green and yellow the letter E or by the earth ground symbol or colored green or green and yellow.

• The wire colored blue

• The wire colored brown

must be connected to the terminal which is marked with the letter N or colored black.

must be connected to the terminal which is marked with the letter L or colored red.

must be connected to the terminal in the plug which is marked with

2-10 Part Number 80-1480-3

Section 2 Installation Instructions

Remote Electrical Wiring Connections

Warning

These diagrams are not intended to show proper wire routing, wire sizing, disconnects, etc., only the correct wire connections.

All electrical work, including wire routing and grounding, must conform to local, state and national electrical codes.

Though wire nuts are shown in the drawin gs, th e ice machine field wiring connections may use either wire nuts or screw terminals.

REMOTE ICE MACHINE WITH SINGLE CIRCUIT MODEL CONDENSER 115/1/60 OR 208-230/1/60

SINGLE

CIRCUIT

REMOTE

CONDENSER

GROUND

NOTE: CONDENSER FAN MOTOR VOL TAGE MATCHES ICE MACHINE VOLTAGE (115V OR 208-230V)

REMOTE ICE MACHINE WITH SINGLE CIRCUIT MODEL CONDENSER 208-230/3/60 OR 380-415/3/50

SINGLE

CIRCUIT

REMOTE

CONDENSER

ICE

MACHINE

SV1199

GROUND

NOTE: FAN MOTOR IS 208-230V

TO SEPARATE

FUSE/BREAKER

GROUND

ICE

MACHINE

SV1255

GROUND

N=115V OR L2=208-230V

TO SEPARATE

FUSE/BREAKER

GROUND

REMOTE ICE MACHINE WITH SINGLE CIRCUIT MODEL CONDENSER 230/1/50

SINGLE CIRCUIT

REMOTE

CONDENSER

ICE

MACHINE

SV1256

GROUND

NOTE: FAN MOTOR IS 220-240V

TO SEPARATE

FUSE/BREAKER

(220-240).

DISCONNECT ALL

POLES.

GROUND

Part Number 80-1480-3 2-11

Installation Instructions Section 2

Water Supply and Drain Requirements

WATER SUPPLY

Local water conditions may require treatment of the water to inhibit scale formation, filter sediment, and remove chlorine odor and taste.

Important

If you are installing a Manitowoc Arctic Puref water filter system, refer to the Installation Instructions supplied with the filter system for ice making water inlet connections.

WATER INLET LINES

Follow these guidelines to install water inlet lines:

• 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 the maximum recommended pressure, obtain a water pressure regulator from your Manitowoc distributor.

• Install a water shut-off valve for both the ice making and condenser water lines.

• Insulate water inlet lines to prevent condensation.

Caution

Do not apply heat to water valve inlet fitting. This will damage plastic valve body.

DRAIN CONNECTIONS

Follow these guidelines when installing drain lines to prevent drain water from flowing back into the ice machine and storage bin:

• 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 larg e en o ug h to accommodate drainage from all drains.

• Run separate bin and ice machine drain lines. Insulate them to prevent condensatio n.

• Vent the bin and ice machine drain to the atmosphere. Do not vent the condenser drain on water-cooled models.

Cooling Tower Applications (Water-Cooled Models)

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 rejectio n, and the 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 no t exceed 90°F (32.2°C).

• Water flow through the condenser must n ot exceed 5 gallons (19 liters) 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 (43.3°C).

2-12 Part Number 80-1480-3

Section 2 Installation Instructions

WATER SUPPLY AND DRAIN LINE SIZING/CONNECTIONS

Caution

Plumbing must conform to state and local codes.

Location Water Temperature Water Pressure Ice Machine Fitting

Ice Making Water Inlet

Ice Making

Water Drain

Condenser Water Inlet

Condenser

Water Drain

35°F (1.6°C) Min.

90°F (32.2°C) Max.

--- ---

40°F (4.4°C) Min.

90°F (32.2°C) Max.

--- ---

Bin Drain --- ---

ELECTRICAL ENTRANCE

18” (46 CM) VENT TUBE

1/2” DRAIN CONNECTION

PLASTIC FITTING ON OPPOSITE

SIDE DO NOT APPLY HEAT

20 psi (137.9 kPA) Min.

80 psi (551.5 kPA) Max.

20 psi (137.9 kPA) Min.

150 psi (1034.2 kPA) Max.

3/8" Female Pipe

Thread

1/2" Female

Pipe Thread

3/8" Female Pipe Thread

1/2" Female

Pipe Thread

3/4" Female

Pipe Thread

3/8” FPT ICE MAKING WATER INLET FITTING,

PLASTIC FITTING ON OPPOSITE SIDE DO NOT

3/8” FPT CONDENSER WATER INLET

(WATER COOLED UNITS ONLY

Tubing Size Up to Ice

Machine Fitting

3/8" (.95 cm) minimum

inside diameter

1/2" (1.27 cm) minimum

inside diameter

1/2" (1.27 cm) minimum

inside diameter

3/4" (1.91 cm) minimum

inside diameter

APPLY HEAT

1/2” FPT CONDENSER WATER DRAIN

(WATER COOLED UNITS ONLY)

1/2” (1.3 CM) MIN

DRAIN ID

AIR GAP

OPEN, TRAPPED AND

VENTED DRAIN

1/2” CPVC SOCKET AUXILLARY BASE

DO NOT TRAP DRAIN LINE, LEAVE AIR GAP BETWEEN

DRAIN TUBE AND DRAIN

DRAIN

SV3142

Typical Water Supply Drain Installation

Part Number 80-1480-3 2-13

Installation Instructions Section 2

Remote Condenser/Line Set Installation

Remote Single

Ice Machine

S500 JC0495

S600/S800/S1000 JC0895

S1400/S1800 JC1395

*Line Set Discharge Line Liquid Line

RT 1/2" (1.27 cm) 5/16" (.79 cm) RL 1/2" (1.27 cm) 3/8" (.95 cm)

Air Temperature Around the Condenser

Minimum Maximum

-20°F (-29°C) 120°F (49°C)

Circuit

Condenser

REMOTE ICE MACHINES REFRIGERANT CHARGE

Each remote ice machine ships from the factory with a refrigerant charge appropriate for installation with line sets of up to 50' (15.25 m). The serial tag on the ice machine indicates the refrigerant charge.

Line Set*

RT-20-R404A RT-35-R404A RT-50-R404A RT-20-R404A RT-35-R404A RT-50-R404A RL-20-R404A RL-35-R404A RL-50-R404A

IMPORTANT

EPA CERTIFIED TECHNICIANS

If remote line set length is between 50' and 100' (15.25-

30.5 m), add nameplate charge.

Tubing length: ______ ________________________ Refrigerant added to nameplate: ________________ New total refrigerant charge: ___________________

1.5 lb. (24 oz) (0.68 kg) of refrigerant to the

Typical Additional Refrigerant Label

If there is no additional label, the nameplate charge is sufficient for line sets up to 100' (30.5 m). (See the chart below.)

Warning

Potential Personal Injury Situation

The ice machine contains refrigerant charge. Installation of the line sets must be performed by a properly trained and EPA certified refrigeration technician aware of the dangers of dealing with

refrigerant charged equipment.

Caution

Never add more than nameplate charge to the refrigeration system for any application.

Additional refrigerant may be required for installations using line sets between 50' and 100’ (15.25-30.5 m) long. If additional refrigerant is required, an additional label located next to the Model/Serial Numbers decal states the amount of refrigerant to be added.

Ice Machine

S500 6 lb. (96 oz.) 1.5 lb. (24 oz.) 7.5 lb. (120 oz.) S600 6.5 lb.(104 oz) 1.5 lb. (24 oz.) 8 lb. (128 oz.)

S850 8.5 lb. (136 oz.) 2 lb. (32 oz.) 10.5 lb. (168 oz.) S1000 8.5 lb. (136 oz.) 2 lb. (32 oz.) 10.5 lb. (168 oz.) S1400 11 lb. (176 oz.) 2 lb. (32 oz.) 13 lb. (208 oz.) S1800 12.5 lb. (200 oz.) 1 lb. (16 oz.) 13.5 lb. (216 oz.)

Nameplate Charge

(Charge Shipped in Ice Machine)

Refrigerant to be Added for

50'-100' Line Sets

Maximum System Charge

(Never Exceed)

2-14 Part Number 80-1480-3

Section 2 Installation Instructions

GENERAL

Condensers must be mounted horizontally with the fan motor on top.

Remote condenser installations consist of vertical and horizontal line sets between the ice machine and the condenser. When combined, they must fit within approved specifications. The following guidelines, drawings and calculation methods must be followed to verify a proper remote condenser installation.

Caution

The 60 month compressor warranty (including the 36 month labor replacement warranty) will not apply if the remote ice machine is not installed according to specifications.

This warranty also will not apply if the refrigeration system is modified with a condenser, heat reclaim device, or other parts or assemblies not manufactured by Manitowoc Ice, Inc., unless specifically approved in writing by Manitowoc Ice, Inc.

GUIDELINES FOR ROUTING LINE SETS

First, cut a 2.5" (6.35 cm) circular hole in the wall or ro of for tubing routing. The line set end with the 90° bend will connect to the ice machine. The straight end will connect to the remote condenser.

Follow these guidelines when routing the refrigerant lines. This will help insure proper performance and service accessibility.

1. Optional - Make the service loop in the line sets (as shown below). This permits easy access to the ice machine for cleaning and service. Do not use hard rigid copper at this location.

2. Required - Do not form traps in the refrigeration lines (except the service loop). Refrigerant oil must be free to drain toward the ice machine or the condenser. Route excess tubing in a supported downward horizontal spiral (as shown below). Do not coil tubing vertically.

3. Required - Keep outdoor refrigerant line runs as short as possible.

SV1204

DOWNWARD

HORIZONTAL

SPIRAL

Routing Line Sets

Part Number 80-1480-3 2-15

Installation Instructions Section 2

CALCULATING REMOTE CONDENSER INSTALLATION DISTANCES

Line Set Length

The maximum length is 100' (30.5 m). The ice machine compressor must have the proper oil

return. The receiver is designed to ho ld a ch ar ge sufficient to operate the ice machine in ambient temperatures between -20°F (-29°C) and 120°F (49°C), with line set lengths of up to 100' (30.5 m).

Line Set Rise/Drop

The maximum rise is 35' (10.7 m). The maximum drop is 15' (4.5 m).

Caution

If a line set has a rise followed by a drop, another rise cannot be made. Likewise, if a line set has a drop followed by a rise, another drop cannot be made.

Calculated Line Set Distance

The maximum calculated distance is 150' (45.7 m).

Make the following calculations to make sure the line set layout is within specifications.

1. Insert the measured rise into the formula below. Multiply by 1.7 to get the calculated rise. (Example: A condenser located 10 feet above the ice machine has a calculated rise of 17 feet.)

2. Insert the measured drop into the formula below. Multiply by 6.6 to get the calculated drop. (Example. A condenser located 10 feet below the ice machine has a calculated drop of 66 feet.)

3. Insert the measured horizontal distance into the formula below. No calculation is necessary.

4. Add together the calculated rise, calculated drop, and horizont al distance to get the total calculated distance. If this total exceeds 150' (45.7 m), move the condenser to a new location and perform the calculations again.

Line set rises, drops, horizontal ru ns (or combinations of these) in excess of the stated maximums will exceed compressor start-up and design limits. This will cause poor oil return to the compressor.

Maximum Line Set Distance Formula

Step 1. Measured Rise (35' [10.7 m] Maximum) ______ x 1.7 = _______ Calculated Rise Step 2. Measured Drop (15' [4.5 m] Maximum) ______ x 6.6 = _______ Calculated Drop Step 3. Measured Horizontal Distance (100' [30.5 m] Maximum) _______ Horizontal Distance Step 4. Total Calculated Distance 150' (45.7 m) _______ Total Calculated Distance

SV1196 SV1195 SV1194

Combination of a Rise and a

Horizontal Run

Combination of a Drop and a

Horizontal Run

Combination of a Rise, a Drop

and a Horizontal Run

2-16 Part Number 80-1480-3

Section 2 Installation Instructions

LENGTHENING OR REDUCING LINE SET LENGTHS

In most cases, by routing the line set properly, shortening will not be necessary. When shortening or lengthening is required, do so before connecting the line set to the ice machine or the remote condenser. This prevents the loss of refrigerant in the ice machine or condenser.

The quick connect fittings on the line sets are equipped with Schraeder valves. Use these valves to recover any vapor charge from the line set. When lengthening or shortening lines follow good refrigeration practices, purge with nitrogen and insulate all tubing. Do not change the tube sizes. Evacuate the lines and place about 5 oz (143g) of vapor refrigerant charge in each line.

CONNECTING A LINE SET

1. Remove the dust caps from the line set, condenser and ice machine.

2. Apply refrigeration oil to the threads on the quick disconnect couplers before connecting them to the condenser.

3. Carefully thread the female fitting to the condenser or ice machine by hand.

4. Tighten the couplings with a wrench until they bottom out.

5. Turn an additional 1/4 turn to ensure proper brassto-brass seating. Torque to the following specifications:

REMOTE RECEIVER SERVICE VALVE

The receiver service valve is closed during shipment. Open the valve prior to starting the ice machine.

1. Remove the top and left side pa nels.

2. Remove the receiver service valve cap.

3. Backseat (open) the valve.

4. Reinstall the cap and panels.

REMOVE FRONT, TOP,

AND LEFT SIDE PANEL

FOR ACCESS TO

RECEIVER VALVE

TURN

COUNTERCLOCKWISE

TO OPEN

RECEIVER SERVICE

VALVE CAP (TURN

SV1603

COUNTERCLOCKWISE

TO REMOVE)

Liquid Line Discharge Line

10-12 ft lb.

(13.5-16.2 N•m)

35-45 ft lb.

(47.5-61.0 N•m)

Backseating the Receiver Service Valve

6. Check all fittings and valve caps for leaks.

7. Make sure Schraeder cores are seated and Schraeder caps are on and tight.

Part Number 80-1480-3 2-17

Installation Instructions Section 2

Remote Ice Machine Usage with Non-Manitowoc Multi-Circuit Condensers

WARRANTY

The sixty (60) month compressor warranty, including thirty six (36) month labor replacement warranty, shall not apply when the remote ice machine is not installed within the remote specifications. The foregoing warranty shall not apply to any ice machine installed and/or maintained inconsistent with the technical instructions provided by Manitowoc Ice, Inc. Performance may vary from Sales specifications. S-Model ARI certified standard ratings only apply when used with a Manitowoc remote condenser.

If the design of the condenser meets the specifications, Manitowoc’s only to be extended to the Manitowoc manufactured part of the system. Since Manitowoc does not condenser in conjunction with the ice machine, Manitowoc will not endorse, recommend, or approve the condenser, and will not be responsible for its performance or reliability.

approval is for full warranty coverage

test the

Important

Manitowoc warrants only complete new and unused remote packages. Guaranteeing the integrity of a new ice machine under the terms of our warranty prohibits the use of pre-existing (used) tubing or condensers.

HEAD PRESSURE CONTROL VALVE

Any remote condenser connected to a Manitowoc SModel Ice Machine must have a head pressure control valve #836809-3 (available from Manitowoc Distributors) installed on the condenser p ackage. Mani towoc will not accept substitute “off the shelf” head pressure control valves.

Caution

Do not use a fan cycling control to try to maintain discharge pressure. Compressor failure will result.

FAN MOTOR

The condenser fan must be on during the complete ice machine freeze cycle (do not cycle on fan cycle control). The ice maker has a condenser fan motor cir cui t fo r u se with a Manitowoc condenser . It is recommended that this circuit be used to control the condenser fan(s) on the multi-circuit condenser to assure it is on at the proper time. Do not exceed the rated amp s for the fan moto r

circuit listed on the ice machine’s serial tag. INTERNAL CONDENSER VOLUME

The multi-circuit condenser internal volume must not be less than or exceed that used by Manitowoc (see chart on next page). Do not exceed internal volume and tr y

to add charge to compensate, as compressor failure will result.

CONDENSER ∆T

∆T is the difference in temperature between the condensing refrigerant and entering air. The ∆T should be 15 to 20°F (-9.4 to -6.6°C) at the beginning of the freeze cycle (peak load conditions) and drop down to 12 to 17°F (-11.1 to -8.3°C) during the last 75% of the freeze cycle (average load conditions).

REFRIGERANT CHARGE

Remote ice machines have the serial plate refrigerant charge (total system charge) located in the ice maker section. (Remote condensers and line sets are supplied with only a vapor charge.)

Caution

Never add more than nameplate charge to ice machine for any application.

QUICK CONNECT FITTINGS

The ice machine and line sets come with quick connect fittings. It is recommended that matching quick connects (available through Manitowoc Distributors) be installed in the multi-circuit condenser, and that a vapor “holding” charge (5 oz.) of proper refrigerant be added to the condenser prior to connection of the ice machine or line set to the condenser.

2-18 Part Number 80-1480-3

Section 2 Installation Instructions

NON-MANITOWOC MULTI-CIRCUIT CONDENSER SIZING CHART

Internal

Ice

Machine

Model

Refrigerant Heat of Rejection

Type Charge

Average

Btu/hr

Peak

Btu/hr

Condenser

Vo lume (cu ft)

Design

Pressure

Min Max Discharge Liquid

500 psig

(3447 kpa)

S500 R-404A

6 lbs. 7,000 9,600 0.020 0.035

(34.47 bar)

safe working

pressure

S600 R404A S850 R-404A 8.5 lbs. 12,000 18,000 0.045 0.060

6.5 lbs. 9,000 13,900 0.045 0.060 2,500 psig

(17237 kpa) S1000 R-404A 8.5 lbs. 16,000 22,000 0.045 0.060 (172.37 bar) S1400 R-404A 11 lbs. 19,000 28,000

0.085 0.105 mounting

burst

pressure

S1800 R-404A 12.5 lbs. 24,000 36,000

SINGLE CIRCUIT REMOTE CONDENSER

DISCHARGE LINE

0.085 0.105

Quick Connect Stubs-

Male Ends

coupling

P/N

83-6035-3

coupling

P/N

83-6034-3

mounting flange P/N 83-6006-3

ELECTRICAL DISCONNECT

flange P/N

83-6005-3

Head

Pressure

Control

Valve

Manitowoc

P/N

83-6809-3

substitutes

ELECTRICAL DISCONNECT

ELECTRICAL SUPPLY

LIQUID LINE

ICE MACHINE

36.00" (91.44 cm) DROP

LIQUID REFRIGERANT LINE

DISCHARGE REFRIGERANT LINE

BIN

Typical Single Circuit Remote Condenser Installation

SV1615

TO CIRCUIT BREAKER PANEL

Part Number 80-1480-3 2-19

Installation Instructions Section 2

Installation Check List

F Is the Ice Machine level?

F Has all of the internal packing been

removed?

F Have all of the electrical and water

connections been made?

F Has the supply voltage been tested and

checked against the rating on the nameplate?

F Is there proper clearance around the ice

machine for air circulation?

F Has the ice machine been installed where

ambient temperatures will remain in the range of 35° - 110°F (1.6° - 43.3°C)?

F Has the ice machine been installed where the

incoming water temperature will remain in the range of 35° - 90°F (1.6° - 32.2°C)?

F Are the ice machine and bin drains vented?

F Are all electrical leads free from contact with

refrigeration lines and moving equipment?

F Has the owner/operator been instructed

regarding maintenance and the us e of Manitowoc Cleaner and Sanitizer?

F Has the owner/operator completed the

warranty registration card?

F Has the ice machine and bin been sanitized?

F Is the toggle switch set to ice? (The toggle

switch is located directly behind the front panel).

F Is the ice thickness control set correctly?

(Refer to Operational Checks to check/set the correct ice bridge thickness).

F Is there a separate drain for the water-cooled

condenser?

F Is there a separate drain for the bin?

Additional Checks for Remote Models

F Has the receiver service valve been

opened?

F Does the remote condenser fan operate

properly after start-up?

F Has the remote condenser been located

where ambient temperatures will remain in the range of -20° - 120°F ( -29 - 49°C).

F Is the line set routed properly?

F Are both refrigeration lines to remote

condenser run so they do not lay in water and are properly insulated?

2-20 Part Number 80-1480-3

Section 2 Installation Instructions

Before Starting the Ice Machine

All Manitowoc ice machines are factory-operated and adjusted before shipment. Normally, new installations do not require any adjustment.

To ensure proper operation, follow the Operational Checks in Section 3 of this manual. Starting the ice machine and completing the Operational Checks are the responsibilities of the owner/operator.

Adjustments and maintenance procedures outlined in this manual are not covered by the warranty.

Warning

Potential Personal Injury Situation

Do not operate equipment that has been misused. abused, neglected, damaged, or altered/modified from that of original manufactured specifications.

AuCS® Automatic Cleaning System

This optional accessory monitors ice making cycles and initiates cleaning procedures automatically. The AuCS® accessory can be set to automatically clean or sanitize the ice machine every 2, 4 or 12 weeks. Refer to the AuCS® Installation, Use and Care Manual for details.

Part Number 80-1480-3 2-21

Installation Instructions Section 2

THIS PA GE INTENTIO NALLY LEFT BLANK

2-22 Part Number 80-1480-3

Section 3 Ice Machine Operation

Section 3

Ice Machine Operation

Component Identification

Water Curtain

sv3149

Ice Thickness Probe

Water Distribution Tube

Toggle Switch

Dump Valve

Check Valve

Bin Switch

Water Level Probe

Water Pump

Water Inlet Location

Water Inlet Valve

(Located in Refrigeration Compartment)

sv3150

Part Number 80-1480-3 3-1

Ice Machine Operation Section 3

Sequence Of Operation

NOTE: The toggle switch must be in the ice position and the water curtain must be in place on the evaporator before the ice machine will start.

INITIAL START-UP OR START-UP AFTER AUTOMATIC SHUT-OFF

1. Water Purge

Before the compressor starts, the water pump and water dump solenoid are energized for 45 seconds, to completely purge the ice machine of old water. This feature ensures that the ice making cycle starts with fresh water.

The harvest valve(s) is also energized during water purge, although it stays on for an additional 5 seconds (50 seconds total on time) during the initial refrigeration system start-up.

When Used - The air compressor energizes for the last 10 seconds of the cycle.

2. Refrigeration System Start-Up

The compressor starts after the 45 second water purge, and it remains on throughout the entire Freeze and Harvest Sequences. The water fill valve is energized at the same time as the compressor. The harvest valve(s) remains on for 5 seconds during initial compressor startup and then shuts off.

At the same time the compressor starts, the condenser fan motor (air-cooled models) is supplied with power throughout the entire Freeze and Harvest Sequences. The fan motor is wired through a fan cycle pressure control, therefore it may cycle on and off. (The compressor and condenser fan motor are wired through the contactor. As a result, anytime the contactor coil is energized, the compressor and fan motor are supplied with power.)

FREEZE SEQUENCE

3. Prechill

The compressor is on for 30 seconds (60 seconds initial cycle) prior to water flow, to prechill the evaporator. The water fill valve remains on until the water level probe is satisfied.

4. Freeze

The water pump restarts after the prechill. An even flow of water is directed across the evaporator and into each cube cell, where it freezes. The water fill valve will cycle on and then off one more time to refill the water trough.

When sufficient ice has formed, the water flow (not the ice) contacts the ice thickness probe. After approximately 10 seconds of continual water contact, the harvest sequence is initiated. The ice machine cannot initiate a harvest sequence until a 6 minute freeze lock has been surpassed.

NOTE: Freeze lock is bypassed after moving the toggle switch from OFF to ICE position for the first cycle only.

3-2 Part Number 80-1480-3

Section 3 Ice Machine Operation

HARVEST SEQUENCE

5. Water Purge

The harvest valve(s) opens at the beginning of the water purge to divert hot refrigerant gas into the evaporator.

The water pump continues to run, and the water dump valve energizes for 45 seconds to purge the water in the sump trough. The water fill valve energizes (turns on) and de-energizes (turns off) strictly by time. The water fill valve energizes for the last 15 seconds of the 45-second water purge.

After the 45 second water purge, the water fill valve, water pump and dump valve de-energize. (Refer to “Water Purge Adjustment” for details.)

6. Harvest

The harvest valve(s) remains open and the refrigerant gas warms the evaporator causing the cubes to slide, as a sheet, off the evaporator and into the storage bin. The sliding sheet of cubes swings the water curtain out, opening the bin switch.

The momentary opening and re-clo sing of th e bin switch terminates the harvest sequence and retu rn s th e ice machine to the freeze sequence (Step 3 - 4.)

When Used - The air compressor energizes after 35 seconds and remains energized throughout the entire harvest cycle. The air compressor will automatically energize for 60 seconds when the harvest cycle time exceeded 75 seconds in the previous cycle.

AUTOMATIC SHUT-OFF

7. Automatic Shut-Off

When the storage bin is full at the end of a harvest sequence, the sheet of cubes fails to clear the water curtain and will hold it open. After the water curtain is held open for 30 seconds, the ice machine shuts of f. The ice machine remains off for 3 minutes before it can automatically restart.

The ice machine remains off until enough ice has been removed from the storage bin to allow the ice to fall clear of the water curtain. As the water curtain swings back to the operating position, the bin switch re-closes and the ice machine restarts (step s 1 - 2), pr ovide d the 3 mi nute delay period is complete.

SAFETY TIMERS

The control board has the following non-adjustable safety timers:

• The ice machine is locked into the freeze cycle for 6 minutes before a harvest cycle can be initiated. Freeze lock is bypassed after moving the toggle switch from OFF to ICE position for the first cycle only.

• The maximum freeze time is 60 minutes at which time the control board automatically initiates a harvest sequence (steps 5 & 6).

• The maximum harvest time is 3.5 minutes at which time the control board automatically initiates a freeze sequence (steps 3 & 4).

WARM WATER RINSE CYCLE

Closing the back of the evaporator allows ice to build up on the rear of the evaporator and the plastic evaporator frame parts. After 200 freeze/harvest cycles have been complete the control board will initiate a warm water rinse.

After the 200th harvest cycle ends:

• The Clean and Harvest LED’s energize to indicate the ice machine is in a warm water rinse.

• The compressor and harvest valve remain energized.

• The water pump energizes.

• The water inlet valve energizes until water contacts the water level probe.

• The compressor and harvest valve warm the water for 5 minutes, then de-energize.

• The water pump remains energized for an additional 5 minutes (10 minute total on time) then deenergizes.

NOTE:

moving the toggle switch to the OFF position, then back to ICE.

The warm water rinse cycle can be terminated by

Part Number 80-1480-3 3-3

Ice Machine Operation Section 3

Operational Checks

GENERAL

Manitowoc ice machines are factory-operated and adjusted before shipment. Normally, new installations do not require any adjustment.

To ensure proper operation, always follow the Operational Checks:

• when starting the ice machine for the first time

• after a prolonged out of service period

• after cleaning and sanitizing NOTE: Routine adjustments and maintenanc e

procedures are not covered by the warranty.

WATER LEVEL

The water level sensor is set to maintain the proper water level above the water pump housing. The water level is not adjustable. If the water level is incorrect, check the water level probe for damage (probe bent, etc.). Clean the water level probe with ice machine cleaner, rinse thoroughly and re-check operation. Re pair or replace the probe as necessary.

ICE THICKNESS CHECK

The ice thickness probe is factory-set to maintain the ice bridge thickness at 1/8" (.32 cm).

NOTE: Make sure the water curtain is in place when performing this check. It prevents water from splashing out of the water trough.

1. Inspect the bridge connecting the cubes. It should be about 1/8" (.32 cm) thick.

2. If adjustment is necessary, turn the ice thickness probe adjustment screw clockwise to increase bridge thickness, counterclockwise to decrease bridge thickness. Set at 1/4” gap between ice machine and evaporator as starting point, then adjust to achieve a 1/8” bridge thickness.

ADJUSTING SCREW

Water Level Probe Location

1/8” ICE BRIDGE THICKNESS

SV3132

Ice Thickness Check

3. Make sure the ice thickness probe wire and the bracket do not restrict movement of the probe.

3-4 Part Number 80-1480-3

Section 3 Ice Machine Operation

HARVEST SEQUENCE WATER PURGE

The harvest sequence water purge adjustment may be used when the ice machine is hooked up to special water systems, such as a de-ionized water treatment system.

Warning

Disconnect electric power to the ice machine at the electrical disconnect before proceeding.

Important

The harvest sequence water purg e is factory-set at 45 seconds. A shorter purge setting (with standard water supplies such as city water) is not recommended. This can increase water system cleaning and sanitizing requirements.

• The harvest sequence water purge is factory set for 45 seconds. Repositioning the jumper will set the harvest water purge to 0 seconds. This setting does not affect the SeCs or AuCs (cleaning) sequences.

• During the harvest sequence water purge, the water fill valve energizes and de-energizes by time. The water purge must be at the factory setting of 45 seconds for the water fill valve to energize during the last 15 seconds of the water purge. If it is set to less than 45 seconds, the water fill valve will not energize during the water purge.

45 second

setting

0 second

setting

SV3139 SV3140

Water Purge Adjustment

For your safety and to eliminate errors, we recommend that a qualified service technician make the harvest water purge adjustment.

Part Number 80-1480-3 3-5

Ice Machine Operation Section 3

THIS PA GE INTENTIO NALLY LEFT BLANK

3-6 Part Number 80-1480-3

Section 4 Maintenance

Section 4

Maintenance

General

You are responsible for maintaining the ice machine in accordance with the instructions in this manual. Maintenance procedures are not covered by the warranty.

! Warning

If you do not understand the procedures or the safety precautions that must be followed, call your local Manitowoc service representative to perform the maintenance procedures for you.

We recommend that you perform the following maintenance procedures a minimum of once every six months to ensure reliable, trouble-free operation and maximum ice production.

Ice Machine Inspection

Warning

Disconnect electric power to the ice machine and the remote condensing unit at the electric service switch before cleaning the condenser.

Check all water fittings and lines for leaks. Also, make sure the refrigeration tubing is not rubbing or vibrating against other tubing, panels, etc.

Do not put anything (boxes, etc.) on the sides or back of the ice machine. There must be adequate airflow through and around the ice machine to maximize ice production and ensure long component life.

Exterior Cleaning

Clean the area around the ice machine as often as necessary to maintain cleanliness and efficient operation. Use cleaners designed for use with stainless steel products.

Sponge any dust and dirt off the outside of the ice machine with mild soap and water. Wipe dry with a clean, soft cloth.

Heavy stains should be removed with stainless steel wool. Never use plain steel wool or abrasive pads. They will scratch the panels.

Cleaning the Condenser

GENERAL

! Warning

Disconnect electric power to the ice machine head section and the remote condensing unit at the electric service switches before cleaning the condenser.

A dirty condenser restricts airflow, resulting in excessively high operating temperatures. This reduces ice production and shortens component life. Clean the condenser at least every six months. Follow the steps below.

! Warning

The condenser fins are sharp. Use care when cleaning them.

1. The washable aluminum filter on self-contained ice machines is designed to catch dust dirt lint and grease. Clean the filter with a mild soap and water.

2. Clean the outside of the condenser with a sof t bru sh or a vacuum with a brush attachment. Be careful not to bend the condenser fins.

3. Shine a flashlight through the condenser to check for dirt between the fins. If dirt remains:

A. Blow compressed air through the condenser fins

from the inside. Be careful not to bend the fan blades.

B. Use a commercial condenser coil cleaner.

Follow the directions and cautions supplied with the cleaner.

Continued on Next Page...

Part Number 80-1480-3 4-1

Maintenance Section 4

4. Straighten any bent condenser fins with a fin comb.

“COMB” DOWN

ONLY

CONDENSER

FIN

COMBS

SV1515

Straighten Bent Condenser Fins

5. Carefully wipe off the fan blades and motor with a soft cloth. Do not bend the fan blades. If the fan blades are excessively dirty, wash with warm, soapy water and rinse thoroughly.

Caution

If you are cleaning the condenser fan blades with water, cover the fan motor to prevent water damage and disconnect electrical power.

Water-Cooled Condenser and Water Regulating Valve

Symptoms of restrictions in the condenser water circu it include:

• Low ice production

• High water consumption

• High operating temperatures

• High operating pressur e s If the ice machine is experiencing any of these symptoms,

the water-cooled condenser and water regulating valve may require cleaning due to scale build-up.

Because the cleaning procedures require special pump s and cleaning solutions, qualified maintenance or service personnel must perform them.

AlphaSan

The goal of AlphaSan is to keep the plastic surfaces of an ice machine cleaner, by reducing or delaying the formation of bio-film. The active ingredient in AlphaSan (Ag+). AlphaSan exchange mechanism. When AlphaSan compounded directly into a plastic part, a controlled release of silver ions from the surface is regulated to maintain an effective concentration at or near the surface of the plastic ice machine part. AlphaSan’s unique ability to effectively control the release of silver not only protects against undesired discoloration of the plastic, but also will last the life of the plastic part. Although AlphaSan does not eliminate the need for periodic cleaning and maintenance. AlphaSan taste of the ice or beverage.



is the element silver in the form of silver ions



slowly releases silver ions via an ion



helps prevent bio-film build up it



has no adverse effect on the



4-2 Part Number 80-1480-3

Section 4 Maintenance

Guardianf

Slime is a leading cause of ice machine breakdowns and biologica l growth is a health co ncern. The Guardian f system releases chlorine dioxide on a controlled basis to inhibit the growth of bacteria and fungi that form slime and cause malodors in the food zone of ice machines. The Guardianf will not control mineral or other water borne buildup. Your water quality will determine the length of time before mineral buildup affects ice machine performance. Mineral buildup must be removed as often as necessary to ensure trouble-free operation of the ice machine.

INSTALLATION

SACHET REPLACEMENT FREQUENCY

If the Guardian system has been ordered, install the sachet holder in the inside of the front panel.

1. Loosen the left screw and open the left front doo r. The right front panel does not need to be removed.

Loosen

Screw

Screw Location

2. Inside the front panel there are two thumbscrew holes covered by stickers, pierce the sticker with a screwdriver.

3. Attach the sachet holder to the front panel by inserting the thumbsrews through the holes in the sachet holder and tightening the thumbscrews

4. Remove the new sachet packet from foil package and install into holder. Removing the foil package allows moisture in the air to activate the sachet contents.

5. Close the left front door and tighten the screw.

Sachet packet(s) require replacement every thirty (30) days or whenever they come in direct contact with water . Refer to chart below for requirements.

Ice Machine Sachet Use

S300/S320/S420/S450/S500/S600 1

S850/S1000/S1400/S1800 1 or 2*

*Although one sachet is recommended, extreme conditions may necessitate using two sachet packets.

Guardianf sachet packets are available through your local Manitowoc ice machine dealer.

SACHET REPLACEMENT PROCEDURE

1. Loosen the left screw and open the left front door. The right front panel does not need to be removed.

2. Remove and discard spent Guardian sachet packets.

3. Remove the new sachet packet from foil package and install into holder. Removing the foil pa ckage allows moisture in the air to activate the sachet contents.

4. Close the left front door and tighten the screw.

5. Discard the use sachet packet in the trash.

CLEAN UP PROCEDURE FOR DAMAGED PACKET

1. Remove all ice from bin/dispenser and discard.

2. Initiate a cleaning and sanitizing sequence on the ice machine (see next pages).

3. Clean the bin/dispenser. Flush the drain thoroughly to prevent future drain blockage.

4. Sanitize the bin/dispenser.

Inside Left Front Door

Guardian

5. Install a replacement sachet packet and reinstall all panels.

Guardianf Location

Part Number 80-1480-3 4-3

Maintenance Section 4

Interior Cleaning and Sanitizing

Caution

GENERAL

Clean and sanitize the ice machine every six months for efficient operation. If the ice machine requires more frequent cleaning and sanitizing, consult a qualified service company to test the water quality and recommend appropriate water treatment. An extremely dirty ice machine must be taken apart for cleaning and sanitizing.

Caution

Use only Manitowoc approved Ice Machine Cleaner (part number 94-0546-3) and Sanitizer (p ar t number 94-0565-3). 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.

CLEANING PROCEDURE

Caution

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.

Warning

Wear rubber gloves and safety goggles (and/or face shield) when handling ice machine Cleaner or Sanitizer.

Ice machine cleaner is used to remove lime scale or other mineral deposits. It is not used to remove algae or slime. Refer to the section on Sanitizing for removal of algae and slime.

Step 1 Set the toggle switch to the OFF position after ice falls from the evaporator at the end of a Harvest cycle. Or, set the switch to the OFF position and allow the ice to melt off the evaporator.

Never use anything to force ice from the evaporator. Damage may result.

Step 2 To start cleaning, place the toggle switch in the CLEAN position. The water will flow through the water dump valve and down the drain. The Clean light will turn on to indicate the ice machine is in the Cleaning mode.

Step 3 Wait about two minutes or until water starts to flow over the evaporator.

Step 4 Add the proper amount of Manitowoc Ice Machine Cleaner to the water trough.

Model Amount of Cleaner

S300/S320/S420 3 ounces (88 ml)

S450/S500/S600/S850/S1000/ 5 ounces (148 ml)

S1400/S1800 9 ounces (266 ml)

Step 5 The ice machine will automatically time out a ten minute cleaning cycle, followed by six rinse cycles, and stop. The Clean light will turn off to indicate the Cleaning cycle is completed. This entire cycle lasts approximately 30 minutes.

Step 6 When the cleaning process stops, move the toggle switch to OFF position. Refer to “Sanitizing Procedure” on the next page.

Step 7

A. The ice machine may be set to start and finish a

self-cleaning procedure then automatically start ice making again.

B. You must wait about one minute into the

cleaning cycle (until water starts to flow over the evaporator) then move the switch from CLEAN to ICE position.

C. When the self-cleaning cycle is completed, an

ice making sequence will start automatically.

Important

After the toggle switch is moved to the ICE position, opening the curtain switch will interrupt the cleaning sequence. The sequence will resume from the point of interruption when the curtain switch closes.

4-4 Part Number 80-1480-3

Section 4 Maintenance

SANITIZING PROCEDURE

Use sanitizer to remove algae or slime. Do not use it to remove lime scale or other mineral deposits.

Caution

Never use anything to force ice from the evaporator. Damage may result.

Warning

Disconnect electric power to the ice machine (and dispenser if applicable) at the electric switch box before proceeding.

Step 2 Refer to Removal of Parts For Cleaning/ Sanitizing and remove ice machine parts.

Step 3 Mix a solution of water and sanitizer.

Solution Type Water Mixed With

Sanitizer 4 gal. (15 l) 3 oz (90 ml) sanitizer

Step 4 Use the sanitizing solution and a sponge or cloth to sanitize (wipe) all parts and interior surfaces of the ice machine. Sanitize the following areas:

A. Side walls

B. Base (area above water trough) C. Evaporator plastic parts D. Bin or dispenser

Step 5 Rinse all sanitized areas with clear water. Step 6 Install the removed parts, restore power and

place toggle switch in the ice position.

Part Number 80-1480-3 4-5

Maintenance Section 4

REMOVAL OF PARTS FOR CLEANING/SANITIZING

1. Turn off the electrical and water supply to the ice machine (and dispenser when applicable).

Warning

Disconnect electric power to the ice machine (and dispenser if applicable) at the electric switch box before proceeding.

2. Remove all ice from the bin.

3. Remove the water curtain and the components you want to clean or sanitize. See the following pages for removal procedures for these parts.

! Warning

Wear rubber gloves and safety goggles (and/or face shield) when handling Ice Machine Cleaner or Sanitizer.

4. Soak the removed part(s) in a properly mixed solution.

Solution Type Water Mixed With

Cleaner 1 gal. (4 l) 16 oz (500 ml) cleaner

Sanitizer 4 gal. (15 l) 3 oz (90 ml) sanitizer

5. Use a soft-bristle brush or sponge (NOT a wire brush) to carefully clean the parts.

Caution

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.

Caution

Do not immerse the water pump motor in the cleaning or sanitizing solution.

6. Use the sanitizing solution and a sponge or cloth to sanitize (wipe) the interior of the ice machine and the entire inside of the bin/dispenser.

7. Thoroughly rinse all of the parts and surfaces with clear water.

8. Install the removed parts.

NOTE: Incomplete rinsing of the ice thickness probe or water level probe may leave a residue. This could cause the ice machine to malfunction. For best result s, brush or wipe the probes off while rinsing it. Thoroughly dry the probes before installing them.

9. Turn on the water and electrical supply.

4-6 Part Number 80-1480-3

Section 4 Maintenance

1. Water Curtain

A. Gently flex the curtain in the center and remove

it from the right side.

B. Slide the left pin out.

STEP 2

STEP 1

Water Curtain Removal

SV3153

2. Ice Thickness Probe

A. Compress the hinge pin on the top of the ice

thickness probe.

COMPRESS HINGE PIN TO REMOVE

Ice Thickness Probe Removal

SV3135

B. Pivot the ice thickness probe to disengage one

pin then the other. The ice thickness probe can be cleaned at this point without complete removal. Follow Step C for complete removal.

! Warning

Disconnect the electric power to the ice machine at the electric service switch box.

C. Disconnect the ice thickness control wiring from

the control board.

Part Number 80-1480-3 4-7

Maintenance Section 4

3. Water Distribution Tube

! Warning

Removing the distribution tube while the water pump is running will allow water to spray from ice machine. Disconnect the electrical power to the ice machine and dispenser at the electric service switch box and turn off the water supply.

NOTE: Distribution tube thumbscrews are retained by orings to prevent loss. Loosen thumbscrews but do not pull thumbscrews out of distribution tube .

4. Water Trough

A. Depress tabs on right and left side of the water

trough.

B. Allow front of water trough to drop as you pull

forward to disengage the rear pins.

DEPRESS TABS

Water Distribution Tube Removal

A. Remove outer half of distribution tube by

loosening the four (4) thumbscrews (o-rings retain thumbscrews to distribution tube).

B. Pull inner half of water distribution tube forward

to release slip joint from water pump tubing connection.

4-8 Part Number 80-1480-3

Section 4 Maintenance

Water Level Probe

1. Remove the water trough.

Warning

Disconnect the electrical power to the ice machine at the electrical disconnect before proceeding.

2. The water level probe normally does not requir e removal for cleaning. The probe can be wiped and cleaned in place or proceed to step 3.

3. Pull the water level probe straight down to disengage.

4. Lower the water level probe until the wiring connector is visible. Disconnect the wire lead from the water level probe.

5. Remove the water level probe from the ice machine.

Water Pump

Warning

Disconnect the electric power to the ice machine at the electric service switch box and turn off the water supply before proceeding.

1. Empty the water trough. A. Move the toggle switch from OFF to ICE. B. Wait 45 seconds. C. Place toggle switch in OFF position.

WATER

PUMP

WATER

PUMP BASE

SV3091

Water Pump Removal

WATER LEVEL PROBE

SV3141

2. Remove the water trough.

3. The water pump normally does not require removal

for cleaning. The water pump base can be wipe d and cleaned in place or proceed to step 4.

4. Grasp pump and pull straight down on pump

assembly until water pump disengages and electrical connector is visible.

5. Disconnect the electrical connector.

6. Remove the water pump assembly from ice

machine.

7. Do not soak the water pump in cleaner or sanitizer.

Wipe the pump and ice machine base clean.

Part Number 80-1480-3 4-9

Maintenance Section 4

Wat er Du mp Valve

The water dump valve normally does not require removal for cleaning. To determine if removal is necessary:

1. Locate the water dump valve.

2. Set the toggle switch to ICE.

3. While the ice machine is in the freeze mode, check the dump valve’s clear plastic outlet drain hose for leakage.

A. If the dump valve is leaking, remove,

disassemble and clean it.

B. If the dump valve is not leaking, do not remove

it. Instead, follow the “Ice Machine Cleaning Procedure”.

Follow the procedure below to remove the dump valve.

! Warning

Disconnect the electric power to the ice machine at the electric service switch box and turn off the water supply before proceeding.

The plunger and the inside of the enclosing tube must be completely dry before assembly.

NOTE: During cleaning, do not stretch, damage or remove the spring from the plunger . If it is removed, slide the spring’s flared end into the plunger’s slotted top opening until the spring contact s the pl unger spr ing sto p.

5. Remove the valve body.

6. Remove the tubing from the dump valve by twisting the clamps off.

7. Remove the two screws securing the dump valve and the mounting bracket.

CAP

COIL

Important

PLUNGER SPRING STOP

SPRING

1. If so equipped, remove the water dump valve shield from its mounting bracket.

2. Lift and slide the coil retainer cap from th e top of the coil.

3. Note the position of the coil assembly on the valve for assembly later. Leaving the wires attached, lift the coil assembly off the valve body and the enclosing tube.

4. Press down on the plastic nut on the enclosing tube and rotate it 1/4 turn. Remove the enclosing tube, plunger, and plastic gasket from the valve body.

NOTE: At this point, the water dump valve can easily be cleaned. If complete removal is desired, continue with step 5.

ENCLOSING

TUBE

Dump Valve Disassembly

PLUNGER

DIAPHRAM

VALVE BODY

4-10 Part Number 80-1480-3

Section 4 Maintenance

Evaporator Tray Removal

1. Remove the water trough.

2. Remove thumbscrew on left side of tray.

3. Allow left side of tray to drop as you pull the tray to the left side. Continue until the outlet tube disengages from the right side.

Drain Line Check Valve

The drain line check valve normally does not require removal for cleaning. Water loss from the sump trough will indicate removal and cleaning are required.

sv3154

1. Remove check valve and tube assembly. A. Tip assembly to right until tubing disengages. B. Lift up on assembly to remove.

2. Remove insulation from check valve assembly.

3. Remove vinyl tubing from top of check valve.

4. Soak in cleaner solution 10 minutes, and then flush

with water to remove debris.

Part Number 80-1480-3 4-11

Maintenance Section 4

Water Inlet Valve

The water inlet valve normally does not require removal for cleaning. Refer to Section 5 for a list of causes for “No Water Entering Water Trough” or “Water Overflows Water Trough.

1. When the ice machine is off, the water inlet valve must completely stop water flow into the machine.

2. When the ice machine is on, the water inlet valve must allow the proper water flow through it. Set the toggle switch to ON. Watch for water flow into the ice machine. If the water flow is slow or only trickles into the ice machine, refer to Section 5.

Follow the procedure below to remove the water inlet valve.

! Warning

Disconnect the electric power to the ice machine and dispenser at the electric service switch box and turn off the water supply before proceeding.

1. Remove the 1/4” hex head screws.

2. Remove, clean, and install the filter screen.

Removing the Front Panels

NOTE: The front panels do not normally have to be removed. If needed perform the following procedure.

1. Loosen screws. Do not remove they are retained by o-rings to prevent loss.

2. 30 Inch and 48 Inch Models Only: To remove right front door lift up and remove (22 inch machines have a single door, proceed to step 3).

FILTER ACCESS SCREWS

WATER INLET VALVE

SV1622

Door Removal

3. Open left front door to 45 degrees.

4. Support with left hand, depress top pin, tilt top of door forward and lift out of bottom pin to remove.

4-12 Part Number 80-1480-3

Section 4 Maintenance

Removal from Service/Winterization

GENERAL

Special precautions must be taken if the ice machine is to be removed from service for an extended period of time or exposed to ambient temperatures of 32°F (0°C) or below.

Caution

If water is allowed to remain in the ice machine in freezing temperatures, severe damage to some components could result. Damage of this nature is not covered by the warranty.

Follow the applicable procedure below.

SELF-CONTAINED AIR-COOLED ICE MACHINES

1. Disconnect the electric power at the circuit breaker or the electric service switch.

2. Turn off the water supply.

3. Remove the water from the water trough.

4. Disconnect and drain the incoming ice-making water line at the rear of the ice machine.

WATER-COOLED ICE MACHINES

1. Perform steps 1-6 under “Self-Con t ained Air-Coole d Ice Machines.”

2. Disconnect the incoming water and drain lines from the water-cooled condenser.

3. Insert a large screwdriver between the bottom spring coils of the water regulating valve. Pry upward to open the valve.

5. Blow compressed air in both the incoming water and the drain openings in the rear of the ice machine until no more water comes out of the inlet water lines or the drain.

6. Make sure water is not trapped in any of the water lines, drain lines, distribution tubes, etc.

SV1624

Pry Open the Water Regulating Valve

4. Hold the valve open and blow compressed air through the condenser until no water remains.

REMOTE ICE MACHINES

1. Move the ICE/OFF/CLEAN switch to OFF.

2. “Frontseat” (shut off) the receiver serv ice valves. Hang a tag on the switch as a reminder to open the valves before restarting.

3. Perform steps 1-6 under “Self-Con t ained Air-Coole d Ice Machines.”



AUCS

Refer to the AuCS of the AuCS

Accessory



Accessory.



Accessory manual for winterization

Part Number 80-1480-3 4-13

Maintenance Section 4

THIS PAGE INTENTIONALLY LEFT BLANK

4-14 Part Number 80-1480-3

Section 5 Before Calling For Service

Section 5

Before Calling For Service

Checklist

If a problem arises during operation of your ice machine, follow the checklist below before calling service. Routine adjustments and maintenance procedures are not covered by the warranty.

Problem Possible Cause To Correct

Ice machine does not operate. No electrical power to the ice machine

and/or condensing unit. High pressure cutout tripping. Clean condenser coil. (See Section 4) ICE/OFF/CLEAN toggle switch set

improperly. Water curtain stuck open. Water curtain must be installed and

Remote receiver service valve and/or Liquid/suction line shut off valves are closed.

Ice machine stops, and can be restarted by moving the toggle switch to OFF and back to ICE.

Ice machine does not release ice or is slow to harvest.

Ice machine does not cycle into harvest mode.

Ice quality is poor (soft or not clear). Poor incoming water quality. Contact a qualified service co mpany to

Safety limit feature stopping the ice machine.

Ice machine is dirty. Clean and sanitize the ice machine.

Ice machine is not level. Level the ice machine. (See Section 2) Low air temperature around ice machine

head section. Fan cycling control does not de-energize

condenser fan motor. The six-minute freeze time lock-in has

not expired yet. Ice thickness probe is dirty. Clean and sanitize the ice machine.

Ice thickness probe is disconnected. Connect the wire. Ice thickness probe is out of adjustment. Adjust the ice thickness probe.

Uneven ice fill (thin at the top of evaporator).

Water filtration is poor. Replace the filter. Ice machine is dirty. Clean and sanitize the ice machine.

Water dump valve is not working. Disassemble and clean the water dump

Water softener is working improperly (if applicable).

Replace the fuse/reset the breaker/turn on the main switch.

Move the toggle switch to the ICE position.

swinging freely. (See Section 4) Open the valve(s). (See Section 2)

Refer to “Safety Limit Feature” on the next page.

(See Section 4)

Air temperature must be at least 35°F (1.6°C).

Verify pressure is below cut-out setpoint, replace fan cycling control.

Wait for the freeze lock-in to expire.

(See Section 4)

(See Section 3) Verify sufficient water level in sump

trough. Contact a qualified service company to check refrigeration system.

test the quality of the incoming water and make appropriate filter recommendations.

(See Section 4)

valve. (See Section 4) Repair the water softener.

Part Number 80-1480-3 5-1

Before Calling For Service Section 5

Problem Possible Cause To Correct

Ice machine produces shallow or incomplete cubes, or the ice fill p attern on the evaporator is incomplete.

Low ice capacity. Water inlet valve filter screen is dirty. Remove the water inlet valve and clean

Ice thickness probe is out of adjustment. Adjust the ice thickness probe.

(See Section 4)

Water trough level is too low. Check the water level probe for damage.

(See Section 3)

Water inlet valve filter screen is dirty. Remove the water inlet valve and clean

the filter screen. (See Section 4) Water filtration is poor. Replace the filter. Hot incoming water. Connect the ice machine to a cold water

supply. (See Section 2) Water inlet valve is not working. Replace the water inlet valve. Incorrect incoming water pressure. Water pressure must be 20-80 psi

(1.4 bar - 5.5 bar) Ice machine is not level. Level the ice machine.

(See Section 2)

the filter screen. (See Section 4) Incoming water supply is shut off. Open the water service valve. Water inlet valve stuck open or leaking. Place toggle switch in OFF position, if

water continues to enter water trough

replace the water inlet valve. The condenser is dirty. Clean the condenser. (See Section 4) High air temperature entering condenser. Air temperature must not exceed 120

°F

(39°C)

Safety Limit Feature

In addition to the standard safety controls, such as the high pressure cutout, your Manitowoc ice machine features built-in safety limits which will stop the ice machine if conditions arise which could cause a major component failure.

Before calling for service, re-start the ice machine using the following procedure:

1. Move the ICE/OFF/CLEAN switch to OFF and then back to ICE.

A. If the safety limit feature has stopped the ice

machine, it will restart after a short delay. Proceed to step 2.

B. If the ice machine does not restart, see “Ice

machine does not operate” on the previous page.

2. Allow the ice machine to run to determine if the condition is recurring.

A. If the ice machine stops again, the condition has

recurred. Call for service.

B. If the ice machine continues to run, the condition

has corrected itself. Allow the ice machine to continue running.

5-2 Part Number 80-1480-3

Section 5 Before Calling For Service

THIS PA GE INTENTIO NALLY LEFT BLANK

Part Number 80-1480-3 5-3

Before Calling For Service Section 5

THIS PA GE INTENTIO NALLY LEFT BLANK

5-4 Part Number 80-1480-3

Section 6 Electrical System

Section 6

Electrical System

Energized Parts Charts

SELF-CONTAINED AIR- AND WATER-COOLED MODELS

Control Board Relays Contactor

Ice Making

Sequence Of

Operation

START-UP 1

1. Water Purge

2. Refrigeration

System Start-Up

FREEZE

SEQUENCE

3. Pre-Chill

4. Freeze On Off Off Off Off On On

HARVEST

SEQUENCE

5. Water Purge

6. Harvest Off On On On Off Off On On

7. AUTOMATIC SHUT-OFF

1. Initial Start-Up or Start-Up After Automatic Shut-Off * Not Used on all Models

123456 7 7A 7B

Water Pump

On On

Off On Off Off On Off On On Off 5 Seconds

Off Off Off Off

On On On

Off Off Off Off Off Off Off Off Off

Harvest

Valve

(Left)

Harvest

Valve

(Right)*

(when

used)

Air

Comp.*

35 sec.

Off

10 sec.

On; after

35 sec.

Water

Inlet

Valve

Off On Off Off Off 45 Seconds

May

Cycle On/Off during

the first 45 sec.

Cycles

Off, then

On one

time

30 sec.

Off,

15 sec.

Dump

Valve

Off On On

On On On

Contactor

Coil

Comp.

Cond.

Fan

Motor

May Cycle

On/Off

May Cycle

On/Off

May Cycle

On/Off

May Cycle

On/Off

Length

Of Time

Initial Start-Up is 60 Seconds

30 Seconds

thereafter

Until 10 sec.

water contact

with ice

thickness

probe

Factory-set at

45 Seconds

Bin switch

activation

Until bin

switch

re-closes &

3 min. delay

Condenser Fan Motor

The fan motor is wired through a fan cycle pressure control, therefore, it may cycle on and off.

Harvest Water Purge

The circuit board has an adjustable water purge in the harvest cycle. This permits a 0 or 45 second purge cycle.

Auto Shut-Off

The ice machine remains off for 3 minutes before it can automatically restart. The ice machine restarts (steps 1-2) immediately after the delay period, if the bin switch re-closes prior to 3 minutes.

Safety Timers

The control board has the following non-adjustable safety timers:

• The ice machine is locked into the freeze cycle for 6 minutes, before a harvest sequence can be initiated. The freeze lock is bypassed when the toggle switch is moved from the OFF to ICE position on the first cycle only.

• The maximum freeze time is 60 minutes, at which time the control board automatically initiates a harvest sequence (steps 5-6).

• The maximum harvest time is 3-1/2 minutes, at which time the control board automatically terminates the harvest sequence. If the bin switch is open, the ice machine will go to automatic shut-off (step 7). If the bin switch is closed, the ice machine will go to the freeze sequence (steps 3-4).

Part Number 80-1480-3 6-1

Electrical System Section 6

REMOTE MODELS

Control Board Relays Contactor

123456 7 7A 7B

Ice Making

Sequence Of

Operation

START-UP 1

1. Water Purge

2. Refrigeration System

Start-Up

FREEZE

SEQUENCE

3. Pre-Chill

4. Freeze On Off Off Off Off On On On

HARVEST

SEQUENCE

5. Water Purge

6. Harvest Off On On On Off Off On On On

7. AUTOMATIC SHUT-OFF

1. Initial Start-Up or Start-Up After Automatic Shut-Off *Not used on all models

Water Pump

On On On

Off On On Off On Off On On On 5 Seconds

Off Off Off Off

On On On

Off Off Off Off Off Off Off Off Off

Auto Shut-Off

Harvest

Valve (Left)

HPR

Valve

Harvest

Valve

(Right)*

Air

Comp.*

35 sec.

Off

10 sec.

On; after

35 sec.

Water

Inlet

Valve

Off On Off Off Off 45 Seconds

May

Cycle On/Off during

first

45 sec.

Cycles

Off then

On one

time

30 sec.

Off,

15 sec.

Dump

Valve

Off On On On

On On On On

Contactor

Coil

Liquid Line

Solenoid

Comp.

Cond.

Fan

Motor

Length

Of Time

Initial Start-

Up is 60 Seconds

30 Seconds

thereafter

Until 10 sec.

water

contact with

ice

thickness

probe

Factory-set

at 45

Seconds

Bin switch

activation

Until bin

switch re-

closes

Safety Timers

The ice machine remains off for 3 minutes before it can automatically restart. The ice machine restarts (steps 1-

2) immediately after the delay period, if the bin switch re closes prior to 3 minutes.

Harvest Water Purge

The circuit board has an adjustable water purge in the harvest cycle. This permits a 0 or 45 second purge cycle.

6-2

The control board has the following non-adjustable safety timers:

• The ice machine is locked into the freeze cycle for the first 6 minutes, not allowing the ice thickness probe to initiate a harvest sequence. The freeze lock is bypassed when the toggle switch is moved from the OFF to ICE position on the first cycle only.

• The maximum freeze time is 60 minutes, at which time the control board automatically initiates a harvest sequence (steps 5-6).

Part Number 80-1480-3

Section 6 Electrical System

Wiring Diagram Sequence of Operation

SELF-CONTAINED MODELS Initial Start-Up or Start-Up After

Automatic Shut-Off

1. WATER PURGE Before the compressor starts, the

water pump and water dump solenoid are energized for 45 seconds to purge old water from the ice machine. This ensures that the ice-making cycle starts with fresh water.

The harvest valve(s) is also energized during the water purge. In the case of an initial refrigeration start-up or auto shut-off, it stays on for an additional 5 seconds (50 seconds total).

When Used - The air compressor energizes for the last 10 seconds of the cycle.

(88)

Ground

(89)

High

Pressure

Cutout

(42)

Ice Thickness

Probe

Water Level Probe

Contactor

Contacts

(55)

(Black)

(51)

Overload

(85)

Fan Cycle

Control

Control Board

(2) (6) (5)

(1) (7) (4)

Trans.

Fuse (7a)

(9)

Low DC Voltage

Plug

(Red)

Compressor

(Yellow)

(86)

(25)

Water Valve

(77)

(76)

(98)

(59)

Contactor Coil

Air Compressor

Bin Switch

Clean

OFF

ICE

(21)

Harvest Valve

Dump Valve

Water Pump

Terminates at Pin Connection

(56)

Run Capacitor

(45)

(22)

(80)

(81)

(74)

(20)

(61)

(60)

(57)

(58)

(26)

(8)

(6)

(1)

(2)

(46)

PTCR

Fan Motor

L2 or N

(99)

(75)

(50)

Run Capacitor

SV3137-2

Self-Contained — Water Purge

Table 6-1. Self-Contained Models

1. Water Purge (45 Seconds) Toggle Switch ICE Bin Switch Closed Control Board Relays

#1 Water Pump ON #2 Ha rve s t Valve (Left) ON #3 Ha rve s t Valve (Right) ON (When Used) #4 Air Com pressor 35 sec. OFF / 10 sec. ON #5 Water In let Valve OFF #6 Water Dump Valve ON #7 Contactor Coil Open / OFF #7A Compressor OFF #7B Condenser Fan Motor OFF Safety Controls (Which could stop ice machine operation)

High Pressure Cut-Out Closed Main Fuse (On Control Board) Closed

Part Number 80-1480-3 6-3

Electrical System Section 6

2. REFRIGERATION SYSTEM START-UP

The compressor starts after the 45second water purge, and it remains on throughout the Freeze and Harvest cycles.

The water fill valve is energized at the same time as the compressor.

The harvest valve(s) remains on for the first 5 seconds of the initial compressor start-up and then shuts off.

At the same time the compressor starts, the condenser fan motor (aircooled models) is supplied with power throughout the entire freeze and harvest sequences.

The fan motor is wired through a fan cycle pressure control, and may cycle on and off. (The compressor and the condenser fan motor are wired through the contactor . Any time the contactor coil is energized, the compressor and fan motor are supplied with power.)

(88)

Ground

(89)

High

Pressure

Cutout

(42)

Ice Thickness

Probe

Water Level Probe

Contactor

Contacts

(55)

(Black)

(51)

Overload

(85)

Fan Cycle

Control

Control Board

(2)

(6)

(5)

(1) (7) (4)

Trans.

Fuse (7a)

(9)

Low DC

Voltage

Plug

(Red)

Compressor

(Yellow)

(86)

(25)

(61)

(26)

(8)

(20)

(60)

(57)

(58)

Bin Switch

(6)

(1)

(2)

(46)

PTCR

Fan Motor

Run Capacitor

Water Valve

(21)

Harvest Valve

(77)

Dump Valve

(76)

Water Pump

(98)

Terminates at Pin Connection

(59) Contactor Coil

(56)

Air Compressor

Clean

OFF

ICE

Run Capacitor

(45)

(22)

(80)

(81)

(74)

L2 or N

(99)

(75)

(50)

SV3137-4

Self-Contained — Refrigeration System Start-Up

Table 6-2. Self-Contained Models

2. Refrigeration System Start Up (5 Seconds) Toggle Switch ICE Bin Switch Closed Control Board Relays

#1 Water Pump OFF #2 Harvest V alve (Left) ON #3 Harvest V alve (Right) ON (When Used) #4 Air Compressor ON (When Used) #5 Water Inlet Valve ON #6 Water Dump Valve OFF #7 Contactor Coil Closed / ON #7A Compressor ON #7B Condenser Fan Motor OFF Safety Controls (Which could stop ice machine operation)

High Pressure Cut-Out Closed Main Fuse (On Control Board) Closed

6-4

Part Number 80-1480-3

Section 6 Electrical System

Freeze Sequence

3. PRE-CHILL To pre-chill the evaporator, the

compressor runs for 30 seconds (60 seconds initial cycle) prior to water flow.

The water fill valve remains on until the water level probe is satisfied.

(88)

Ground

(89)

High

Pressure

Cutout

(42)

Ice Thickness

Probe

Water Level Probe

Contactor

Contacts

(55)

(Black)

(51)

Overload

(85)

Fan Cycle

Control

Control Board

(2) (6) (5)

(1)

(7)

(4)

Trans.

Fuse (7a)

(9)

Low DC

Voltage

Plug

(Red)

Compressor

(Yellow)

(86)

(25)

Water Valve

(77)

(76)

(98)

(59)

Contactor Coil

Air Compressor

Bin Switch

Clean

OFF

ICE

(21)

Harvest Valve

Dump Valve

Water Pump

Terminates at Pin Connection

(56)

Run Capacitor

(45)

(22)

(80)

(81)

(74)

(20)

(61)

(60)

(57)

(58)

(26)

(8)

(6)

(1) (2)

(46)

PTCR

Fan Motor

L2 or N

(99)

(75)

(50)

Run Capacitor

SV3137-3

Self-Contained — Pre-Chill

Table 6-3. Self-Contained Models

3. Pre-Chill (60 Seconds Initial Cycle - 30 Seconds thereafter) Toggle Switch ICE Bin Switch Closed Control Board Relays

#1 Wat er Pump OFF #2 Harvest Valve (Left) OFF #3 Harvest Valve (Right) OFF (When Used) #4 Air Compressor OFF (When Used) #5 Water Inlet Valve On #6 Water Dump Valve OFF #7 Contactor Coil Closed / ON #7A Compressor ON #7B Condenser Fan Motor May Cy cle ON / OFF Safety Controls (Which could stop ice machine operation)

High Pressure Cut-Out Closed Main Fuse (On Control Board) Closed

Part Number 80-1480-3 6-5

Electrical System Section 6

4. FREEZE The water pump starts after the pre-

chill. An even flow of water is directed across the evaporator and into each cube cell, where it freezes.

The water fill valve will cycle off then on one more time to refill the water trough.

When sufficient ice has formed, the water flow (not the ice) contacts the ice thickness probes. After approximately 10 seconds of continual contact, a harvest cycle is initiated.

NOTE: The ice machine cannot initiate a harvest cycle until a 6minute freeze lock has expired.

(88)

Ground

(89)

High

Pressure

Cutout

(42)

Ice Thickness

Probe

Water Level Probe

Contactor

Contacts

(55)

(Black)

(51)

Overload

(85)

Fan Cycle

Control

Control Board

(2) (6) (5)

(1)

(7)

(4)

Trans.

Fuse (7a)

Low DC

Voltage

Plug

(Red)

Compressor

(Yellow)

(86)

L2 or N

Water Valve

(77)

(76)

(98)

(59) Contactor Coil

Air Compressor

Bin Switch

Clean

OFF

ICE

(21)

Harvest Valve

Dump Valve

Water Pump

Terminates at Pin Connection

(56)

Run Capacitor

(45)

(20)

(61)

(60)

(57)

(58)

(25)

(26)

(9)

(8)

(6)

(1)

(2)

(46)

PTCR

Fan Motor

(22)

(80)

(81)

(99)

(75)

(74)

(50)

Run Capacitor

SV3137-5

Self-Contained — Freeze

Table 6-4. Self-Contained Models

4. Freeze (Until 10 Seconds of Water Contact with Ice Thickness Probe) Toggle Switch ICE Bin Switch Closed Control Board Relays

#1 Water Pump ON #2 Harvest Valve (Left) OFF #3 Harvest Valve (Right) OFF (When Used) #4 Air Compressor OFF (When Used)

#5 Water Inlet Valve #6 Water Dump Valve OFF

#7 Contactor Coil Closed / ON #7A Compressor ON #7B Condenser Fan Motor May Cycle ON / OFF Safety Controls (Which could stop ice machine operation)

High Pressure Cut-Out Closed Main Fuse (On Control Board) Closed

Cycles OFF, then ON one more time

6-6

Part Number 80-1480-3

Section 6 Electrical System

Harvest Sequence

5. WATER PURGE The harvest valve(s) opens at the

beginning of the water purge to divert hot refrigerant gas into the evaporator.

The water pump continues to run, and the water dump valve energizes for 45 seconds to purge the water in the sump trough. The water fill valve energizes and de-energizes strictly by time. The water fill valve energizes for the last 15 seconds of the 45second water purge.

After the 45 second water purge, the water fill valve, water pump and dump valve de-energize. (Refer to “Water Purge Adjustment” for details.)

The air compressor (when used) will energize after 35 seconds.

(88)

Ground

(89)

High

Pressure

Cutout

(42)

Ice Thickness

Probe

Water Level Probe

Contactor

Contacts

(55)

(Black)

(51)

Overload

(85)

Fan Cycle

Control

Control Board

(2) (6) (5)

(1) (7) (4)

Trans.

Fuse (7a)

(9)

Low DC Voltage

Plug

(Red)

Compressor

(Yellow)

(86)

(25)

L2 or N

Water Valve

(77)

(76)

(98)

(59) Contactor Coil

Air Compressor

Bin Switch

Clean

OFF

ICE

(21)

Harvest Valve

Dump Valve

Water Pump

Terminates at Pin Connection

(56)

Run Capacitor

(45)

(20)

(61)

(60)

(57)

(58)

(26)

(8)

(6)

(1)

(2)

(46)

PTCR

Fan Motor

(99)

(22)

(80)

(75)

(81)

(74)

(50)

Run Capacitor

Self-Contained — Water Purge

Table 6-5. Self-Contained Models

5. Water Purge (45 Seconds) Toggle Switch ICE Bin Switch Closed Control Board Relays

#1 Water Pump ON #2 Harvest Valve (Left) ON #3 Harvest Valve (Right) ON (When Used) #4 Air Compressor ON; after 35 seconds

#5 Water Inlet Valve #6 Water Dump Valve ON

#7 Contactor Coil Closed / ON #7A Compressor ON #7B Condenser Fan Motor OFF; May Cycle ON Safety Controls (Which could stop ice machine operation)

High Pressure Cut-Out Closed Main Fuse (On Control Board) Closed

30 seconds OFF, 15 seconds ON

SV3137-6

Part Number 80-1480-3 6-7

Electrical System Section 6

6. HARVEST The harvest valve(s) remains open

and the refrigerant gas warms the evaporator . This causes the cubes to slide, as a sheet, off the evaporator and into the storage bin.

The sliding sheet of cubes swings the water curtain out, opening the bin switch. This momentary opening and closing of the bin switch terminates the Harvest Cycle and returns the ice machine to the Freeze Cycle (steps 3-4).

The air compressor (when used) remains energized throughout the entire harvest cycle. The air compressor will automatically energize after 60 seconds when the harvest cycle time exceeded 75 seconds in the previous cycle.

(88)

Ground

(89)

High

Pressure

Cutout

(42)

Ice Thickness

Probe

Water Level Probe

Contactor

Contacts

(55)

(Black)

(51)

Overload

(85)

Fan Cycle

Control

Control Board

(2)

(6)

(5)

(1) (7) (4)

Trans.

Fuse (7a)

(9)

Low DC

Voltage

Plug

(Red)

Compressor

(Yellow)

(86)

(25)

Water Valve

(77)

(76)

(98)

(59) Contactor Coil

Air Compressor

Bin Switch

Clean

OFF

ICE

(21)

Harvest Valve

Dump Valve

Water Pump

Terminates at Pin Connection

(56)

Run Capacitor

(45)

(22)

(80)

(81)

(74)

(20)

(61)

(60)

(57)

(58)

(26)

(8)

(6)

(1)

(2)

(46)

PTCR

Fan Motor

L2 or N

(99)

(75)

(50)

Run Capacitor

SV3137-7

Table 6-6. Self-Contained Models

6. Harvest (Until Bin Switch Activation) Toggle Switch ICE Bin Switch Closed Control Board Relays

#1 Water Pump OFF #2 Harvest Valve (Left) ON #3 Harvest Valve (Right) ON (When Used) #4 Air Compressor ON (When Used) #5 Water Inlet Valve OFF #6 Water Dump Valve OFF #7 Contactor Coil Closed / ON #7A Compressor ON #7B Condenser Fan Motor OFF; May Cycle ON Safety Controls (Which could stop ice machine operation)

High Pressure Cut-Out Closed Main Fuse (On Control Board) Closed

6-8

Part Number 80-1480-3

Section 6 Electrical System

Automatic Shut-Off

7. AUTOMATIC SHUT-OFF When the storage bin is full at the

end of a harvest cycle, the sheet of cubes fails to clear the water curtain and holds it open. After the water curtain is held open for 30 seconds, the ice machine shuts off.

The ice machine remains off until enough ice is removed from the storage bin to allow the sheet of cubes to drop clear of the water curtain. As the water curtain swings back to the operating position, the bin switch closes and the ice machine restarts (steps 1-2), provided the 3 minute delay period is complete.

NOTE: The ice machine must remain off for 3 minutes before it can automatically restart.

(88)

Ground

(89)

High

Pressure

Cutout

(42)

Ice Thickness

Probe

Water Level Probe

Contactor

Contacts

(55)

(Black)

(51)

Overload

(85)

Fan Cycle

Control Board

(2) (6)

(5)

(1) (7)

(4)

Trans.

Fuse (7a)

Low DC

Voltage

Plug

(Red)

Control

(25)

(9)

Compressor

(Yellow)

(86)

Water Valve

(77)

(76)

(98)

(59) Contactor Coil

Air Compressor

Bin Switch

Clean OFF ICE

(21)

Harvest Valve

Dump Valv e

Water Pump

Terminates at Pin Connection

(56)

Run Capacitor

(45)

(22)

(80)

(81)

(74)

(20)

(61)

(60)

(57)

(58)

(26)

(8)

(6)

(1)

(2)

(46)

PTCR

Fan Motor

L2 or N

(99)

(75)

(50)

Run Capacitor

Self-Contained — Automatic Shut-Off

Table 6-7. Self-Contained Models

7. Automatic Shut-Off (Until Bin Switch Closes) Toggle Switch ICE Bin Switch Open Control Board Relays

#1 Wat er Pump OFF #2 Harvest Valve (Left) OFF #3 Harvest Valve (Right) OFF (When Used) #4 Air Compressor OFF (When Used) #5 Water Inlet Valve OFF #6 Water Dump Valve OFF #7 Contactor Coil Open / OFF #7A Compressor OFF #7B Condenser Fan Motor OFF Safety Controls (Which could stop ice machine operation)

High Pressure Cut-Out Closed Main Fuse (On Control Board) Closed

SV3137-1

Part Number 80-1480-3 6-9

Electrical System Section 6

THIS PA GE INTENTIO NALLY LEFT BLANK

6-10

Part Number 80-1480-3

Section 6 Electrical System

REMOTE MODELS Initial Start-Up Or Start-Up After

Automatic Shut-Off

1. WATER PURGE Before the compressor starts, the

water pump and water dump solenoid are energized for 45 seconds to purge old water from the ice machine. This ensures that the ice-making cycle starts with fresh water.

NOTE: The harvest valve and harvest pressure regulating (HPR) solenoid valve are also energized during the water purge. In the case of an initial refrigeration start-up or au to shut-off, they stay on for an additional 5 seconds (50 seconds total).

(L1)

High Pressure

(88)

(42)

(L1)

Ground

(89)

Cut-out

Ice Thickness

Probe

Water Lev el

Probe

Contactor

Contacts

(51)

(55)

Compressor

Black

Control Board

(2) (6) (5) (1) (7)

(4)

Trans Fuse 7A

Low DC

Voltage

Plug

(F1)

Red

(9)

Yellow

(61)

(25)

(8)

(2)

(46)

Remote Fan Motor

(20)

(60)

(57)

(58)

(56)

(26)

Bin Switch (6)

(1)

PTCR

Run Capacitor

Water Valve

(21)

HPR Valve

(78)

(77)

Harvest Valve

(76)

Dump Valve

(98)

Water Pump

(83)

Liquid Line

(59)

Solenoid

Contactor Coil

Air Compressor

Clean

OFF

Run Cap.

(45)

(79)

(80)

(81)

(99)

(74)

(50)

Remote

Condenser

(22)

(L2)

(82)

(75)

(F2)

SV3158-1

Remote - Water Purge

Table 6-8. Remote Models

1. Water Purge (45 Seconds) Toggle Switch ICE Bin Switch Closed Control Board Relays

#1 Water Pump ON #2 Harvest Valve (Left) / HPR Valve ON #3 Harvest Valve (Right) ON (When Used) #4 Air Compressor 35 sec. OFF / 10 sec. ON #5 Water Inlet Valve OFF #6 Water Dump Valve ON #7 Contactor Coil / Liquid Line Solenoid Open / OFF #7A Compressor OFF #7B Condenser Fan Motor OFF Safety Controls (Which could stop ice machine operation)

High Pressure Cut-Out Closed Main Fuse (On Control Board) Closed

Part Number 80-1480-3 6-11

Electrical System Section 6

2. REFRIGERATION SYSTEM START-UP The compressor, remote condenser fan motor

and liquid line solenoid valve energize after the 45-second water purge, and remain on throughout the Freeze and Harvest cycles.

The water fill valve is energized at the same time as the compressor. It remains on until the water level sensor closes for 3 continuous seconds.

The harvest valve and harvest pressure regulating (HPR) solenoid valve remain on for the first 5 seconds of the initial compressor start-up.

NOTE: (The compressor and the condenser fan motor are wired through the contactor. Any time the contactor coil is energized, these components are supplied with power.)

(L1)

High Pressure

(88)

(42)

(L1)

Ground

(89)

Cut-out

Ice Thickness

Probe

Water Lev el

Probe

Contactor

Contacts

(51)

(55)

Compressor

Black

Control Board

(2) (6) (5) (1) (7)

(4)

Trans

Fuse 7A

Low DC

Voltage

Plug

(F1)

Red

(9)

Yellow

(61)

(25)

(26)

(8)

(2)

(46)

Remote Fan Motor

(20)

(60)

(57)

(58)

(59)

Contactor Coil

(56)

Air Compressor

Bin Switch (6)

Clean

(1)

OFF

PTCR

Run Capacitor

Water Valve

(21)

HPR Valve

(78)

(77)

Harvest Valve

(76)

Dump Valve

(98)

Water Pump

(83)

Liquid Line Solenoid

Run

Cap.

(45)

(79)

(80)

(81)

(99)

(74)

(50)

Remote

Condenser

(22)

(L2)

(82)

(75)

(F2)

SV3158-2

Table 6-9. Remote Models Remote — Refrigeration System Start-Up

2. Refrigeration System Start Up (5 Seconds) Toggle Switch ICE Bin Switch Closed Control Board Relays

#1 Water Pump OFF #2 Harvest Valve (Left) / HPR Valve ON #3 Harvest V alve (Right) ON (When Used) #4 Air Compressor ON (When Used) #5 Water Inlet Valve ON #6 Water Dump Valve OFF #7 Contactor Coil / Liquid Line Solenoid Closed / ON #7A Compressor ON #7B Condenser Fan Motor ON Safety Controls (Which could stop ice machine operation)

High Pressure Cut-Out Closed Main Fuse (On Control Board) Closed

6-12

Part Number 80-1480-3

Section 6 Electrical System

Freeze Sequence

3. PRE-CHILL To pre-chill the evaporator, the

compressor runs for 30 seconds (60 seconds initial cycle) prior to water flow.

NOTE: The water fill valve remains on until the water level probe is satisfied.

(L1)

High Pressure

(88)

(42)

Contactor

(L1)

Ground

(89)

Cut-out

Ice Thickness

Probe

Water Lev el

Probe

Contacts

(51)

(55)

Compressor

Black

Control Board

(2) (6)

(5) (1) (7) (4)

Trans

Fuse 7A

Low DC

Voltage

Plug

(F1)

Red

(9)

Yellow

(61)

(25)

(8)

(2)

(46)

Remote Fan Motor

(20)

(60)

(57)

(58)

(56)

(26)

Bin Switch (6)

(1)

PTCR

Run Capacitor

Water Valve

(21)

HPR Valve

(78)

(77)

Harvest Valve

(76)

Dump Valve

(98)

Water Pump

(83)

Liquid Line

(59)

Solenoid

Contactor Coil

Air Compressor

Clean

OFF

Run

Cap.

(45)

(79)

(80)

(81)

(99)

(74)

(50)

Remote

Condenser

(22)

(L2)

(82)

(75)

(F2)

SV3158-3

Remote — Pre-Chill

Table 6-10. Remote Models

3. Pre-Chill (60 Seconds Initial Cycle - 30 Seconds thereafter) Toggle Switch ICE Bin Switch Closed Control Board Relays

#1 Wat er Pump OFF #2 Harvest Valve (Left) / HPR Valve OFF #3 Harvest Valve (Right) OFF (When Used) #4 Air Compressor OFF (When Used #5 Water Inlet Valve ON #6 Water Dump Valve OFF #7 Contactor Coil / Liquid Line Solenoid Closed / ON #7A Compressor ON #7B Condenser Fan Motor May Cy cle ON / OFF Safety Controls (Which could stop ice machine operation)

High Pressure Cut-Out Closed Main Fuse (On Control Board) Closed

Part Number 80-1480-3 6-13

Electrical System Section 6

4. FREEZE The water pump starts after the pre-

chill. An even flow of water is directed across the evaporator and into each cube cell, where it freezes.

The water fill valve will cycle off then on one more time to refill the water trough.

When sufficient ice has formed, the water flow (not the ice) contacts the ice thickness probes. After approximately 10 seconds of continual contact, a harvest cycle is initiated.

NOTE: The ice machine cannot initiate a harvest cycle until a 6minute freeze lock has expired.

(L1)

High Pressure

(88)

(42)

(L1)

Ground

(89)

Cut-out

Ice Thickness

Probe

Water Level

Probe

Contactor

Contacts

(51)

(55)

Compressor

Black

Control Board

(2) (6)

(5) (1) (7) (4)

Trans

Fuse 7A

Low DC

Voltage

Plug

(F1)

Red

(25)

(9)

(2)

Yellow

(20)

(61)

(60)

(57)

(58)

(56)

(26)

(8)

(1)

(46)

PTCR

Remote Fan Motor

Run Capacitor

Bin Switch (6)

Water Valve

(21)

HPR Valve

(78)

(77)

Harvest Valve

(76)

Dump Valve

(98)

Water Pump

(83)

Liquid Line

(59)

Solenoid

Contactor Coil

Air Compressor

Clean

OFF

Run

Cap.

(45)

(79)

(80)

(81)

(99)

(74)

(50)

Remote

Condenser

(22)

(L2)

(82)

(75)

(F2)

SV3158-4

Table 6-11. Remote Models Remote — Freeze

4. Freeze (Until 10 Seconds of Water Contact with Ice Thickness Probe) Toggle Switch ICE Bin Switch Closed Control Board Relays

#1 Water Pump ON #2 Harvest Valve (Left) / HPR Valve OFF #3 Harvest Valve (Right) OFF (When Used) #4 Air Compressor OFF (When Used)

#5 Water Inlet Valve #6 Water Dump Valve OFF

#7 Contactor Coil / Liquid Line Solenoid Closed / ON #7A Compressor ON #7B Condenser Fan Motor ON Safety Controls (Which could stop ice machine operation)

High Pressure Cut-Out Closed Main Fuse (On Control Board) Closed

6-14

Cycles OFF, then ON one more time

Part Number 80-1480-3

Section 6 Electrical System

Harvest Sequence

5. WATER PURGE The harvest valve and HPR solenoid

also open at the beginning of the water purge to divert hot refrigerant gas into the evaporator.

The water pump continues to run, and the water dump valve energizes for 45 seconds to purge the water in the sump trough. The water fill valve energizes (turns on) and deenergizes (turns off) strictly by time. The water fill valve energizes for the last 15 seconds of the 45-second water purge. The water purge must be at the factory setting of 45 seconds for the fill valve to energize during the last 15 seconds of the Water Purge. If set at less than 45 seconds the water fill valve does not energize during the water purge.

NOTE: After the 45 second water purge, the water fill valve, water pump and dump valve de-energize. (Refer to “Water Purge Adjustment” for details.)

(L1)

High Pressure

(88)

(42)

(L1)

Ground

(89)

Cut-out

Ice Thickness

Probe

Water Lev el

Probe

Contactor

Contacts

(51)

(55)

Compressor

Black

Control Board

(2) (6) (5) (1) (7) (4)

Trans

Fuse 7A

Low DC Voltage

Plug

(F1)

Red

(25)

(9)

(2)

Yellow

(20)

(61)

(60)

(57)

(58)

(56)

(26)

(8)

(1)

(46)

PTCR

Remote Fan Motor

Run Capacitor

Bin Switch

(6)

Water Valve

(21)

HPR Valve

(78)

(77)

Harvest Valve

(76)

Dump Valve

(98)

Water Pump

(83)

Liquid Line

(59)

Solenoid

Contactor Coil

Air Compressor

Clean

OFF

Run

Cap.

(45)

(79)

(80)

(81)

(99)

(74)

(50)

Remote

Condenser

(22)

(82)

(75)

(F2)

SV3158-5

SV3158-6

(L2)

Remote — Water Purge

Table 6-12. Remote Models

5. Water Purge (45 Seconds) Toggle Switch ICE Bin Switch Closed Control Board Relays

#1 Water Pump ON #2 Harvest Valve (Left) / HPR Valve ON #3 Harvest Valve (Right) ON (When Used) #4 Air Compressor ON; after 35 seconds

#5 Water Inlet Valve #6 Water Dump Valve ON

#7 Contactor Coil / Liquid Line Solenoid Closed / ON #7A Compressor ON #7B Condenser Fan Motor ON Safety Controls (Which could stop ice machine operation)

High Pressure Cut-Out Closed Main Fuse (On Control Board) Closed

Part Number 80-1480-3 6-15

30 seconds OFF, 15 seconds ON

Electrical System Section 6

6. HARVEST The harvest valve(s) and HPR

solenoid valve remain open, allowing refrigerant gas to warm the evaporator . This causes the cubes to slide, as a sheet, off the evaporator and into the storage bin.

The air compressor (when used) energizes after 35 seconds into the harvest cycle. The air compressor will automatically energize after 60 seconds when the harvest cycle time exceeded 75 seconds in the previous cycle.

(L1)

High Pressure

(88)

(42)

(L1)

Ground

(89)

Cut-out

Ice Thickness

Probe

Water Lev el

Probe

Contactor

Contacts

(51)

(55)

Compressor

Black

Control Board

(2) (6) (5) (1) (7)

(4)

Trans

Fuse 7A

Low DC

Voltage

Plug

(F1)

Red

(25)

(9)

(2)

Yellow

(20)

(61)

(60)

(57)

(58)

(56)

(26)

(8)

(1)

(46)

PTCR

Remote Fan Motor

Run Capacitor

(21)

(78)

(77)

Harvest Valve

(76)

Dump Valve

(98)

(83)

(59)

Contactor Coil

Air Compressor

Bin Switch (6)

Clean

OFF

Run

Cap.

(45)

Water Valve

HPR Valve

(79)

(81)

Water Pump

Liquid Line Solenoid

Remote

Condenser

(74)

(50)

(80)

(99)

(22)

(L2)

(82)

(75)

(F2)

Remote — Harvest

Table 6-13. Remote Models

6. Harvest (Until Bin Switch Activation) Toggle Switch ICE Bin Switch Closed Control Board Relays

#1 Water Pump OFF #2 Harvest Valve (Left) / HPR Valve ON #3 Harvest Valve (Right) ON (When Used) #4 Air Compressor ON (When Used) #5 Water Inlet Valve OFF #6 Water Dump Valve OFF #7 Contactor Coil / Liquid Line Solenoid Closed / ON #7A Compressor ON #7B Condenser Fan Motor ON Safety Controls (Which could stop ice machine operation)

High Pressure Cut-Out Closed Main Fuse (On Control Board) Closed

6-16

Part Number 80-1480-3

Section 6 Electrical System

Automatic Shut-Off

7. AUTOMATIC SHUT-OFF If the storage bin is full at the end of a

harvest cycle, the sheet of cubes fails to clear the water curtain and holds it open. After the water curtain is held open for 30 seconds, the ice machine shuts off.

NOTE: The ice machine must remain off for 3 minutes before it can automatically restart.

(L1)

(88)

Ground

(89)

High Pressure

Cut-out

(42)

Ice Thickness

Probe

Water Level

Probe

Contactor

Contacts

(L1)

(51)

(55)

Compressor

Black

Control Board

(2) (6)

(5) (1) (7) (4)

Trans

Fuse 7A

Low DC

Voltage

Plug

(F1)

Red

(25)

(9)

(2)

Yellow

(20)

(61)

(60)

(57)

(58)

(56)

(26)

(8)

(1)

(46)

PTCR

Remote Fan Motor

Run Capacitor

Bin Switch

(6)

Water Valve

(21)

HPR Valve

(78)

(77)

Harvest Valve

(76)

Dump Valve

(98)

Water Pump

(83)

Liquid Line

(59)

Solenoid

Contactor Coil

Air Compressor

Clean

OFF

Run Cap.

(45)

Remote

Condenser

(79)

(81)

(80)

(74)

(50)

(99)

(22)

(L2)

(82)

(75)

(F2)

SV3158-7

Remote — Automatic Shut-Off

Table 6-14. Remote Models

7. Automatic Shut-Off (Until Bin Switch Closes) Toggle Switch ICE Bin Switch Open Control Board Relays

#1 Wat er Pump OFF #2 Harvest Valve (Left) / HPR Valve OFF #3 Harvest Valve (Right) OFF (When Used) #4 Air Compressor OFF (When Used) #5 Water Inlet Valve OFF #6 Water Dump Valve OFF #7 Contactor Coil / Liquid Line Solenoid Open / OFF #7A Compressor OFF #7B Condenser Fan Motor OFF Safety Controls (Which could stop ice machine operation)

High Pressure Cut-Out Closed Main Fuse (On Control Board) Closed

Part Number 80-1480-3 6-17

Electrical System Section 6

Wiring Diagrams

The following pages contain electrical wiring diagrams. Be sure you are referring to the correct diagram for the ice machine which you are servicing.

Warning

Always disconnect power before working on electrical circuitry.

WIRING DIAGRAM LEGEND

The following symbols are used on all of the wiring diagrams: * Internal Compressor Overload

(Some models have external compressor overloads)

** Fan Motor Run Capacitor

(Some models do not incorporate fan motor run capacitor)

TB Terminal Board Connection

(Terminal board numbers are printed on the actual terminal board)

( ) Wire Nu mber Designation

(The number is marked at each end of the wire)

—>>— Multi-Pin Connection

(Electrical Box Side) —>>— (Compressor Compartment Side)

6-18

Part Number 80-1480-3

Section 6 Electrical System

S320 SELF CONTAINED- 1 PHASE

SEE SERIAL PLATE FOR VOLTAGE

L2 OR N

(88)

(42)

GROUND

(89)

HIGH PRESSURE

CUTOUT

(55)

ICE THICKNESS PROBE

WATER LEVEL PROBE

CONTROL BOARD

(2) (6) (5) (1)

(7) (4)

TRANS.

FUSE (7A)

CLEAN

LEFT BIN RIGHT BIN

RMT BIN

WTR PROBE

ICE PROBE

HARV SL-1 SL-2

LOW D.C. VOLTAGE PLUG

(9)

(2)

(8)

(61)

(1)

(57)

(6)

(20)

(60)

(58)

(56)

SWITCH

(98)

BIN

CLEAN

OFF ICE

(21)

WATER

VALVE

(77)

HARVEST

SOLENOID

(76)

DUMP

SOLENOID

WATER PUMP

(59)

CONTACTOR COIL

(22)

(99)

(80)

(75)

(81)

TERMINATES AT

PIN CONNECTION

(74)

(48)

CURRENT

RELAY

RUN CAPACITOR**

CONTACTOR

CONTACTS

(51)

(85)

FAN CYCLE CONTROL

START

CAPACITOR

FAN MOTOR (AIR COOLED ONLY)

(49)

Part Number 80-1480-3 6-19

Electrical System Section 6

S300/S420/S450- SELF CONTAINED - 1 PHASE

(88)

(42)

Ground

(89)

High Pressure

Cutout

Ice Thickness

Water Level Probe

Probe

(55)

Control

Board

(2)

(6)

(5) (1)

(7) (4)

Trans.

Fuse (7a)

Clean

Left Bin

Right Bin Rmt Bin

Wtr Probe

Ice Probe Harvest

SL-1 SL-2

Low DC Voltage

Plug

(9)

(25)

(2)

(8)

(61)

(26)

(1)

(6)

(60)

(57)

(20)

(58)

(56)

Air Compressor

Bin Switch

Clean

OFF

ICE

Water Valve

(21)

Harvest Valve

(77)

Dump Valve

(76)

Water Pump

(98)

(59)

Contactor

(When Used)

(22)

(80)

(81)

Terminates at Pin Connection

Coil

(74)

(99)

L2 or N

(75)

6-20

Contactor

Contacts

(51)

Overload

(46)

(85)

Fan Cycle

Control

Compressor

(48)

(86)

Run

Capacitor

(53)

(44)

Run Capacitor

(52)

Fan Motor

(49)

Compressor

Terminal Layout

Viewed from End of

Compressor

(50)

(47)

(45)

Part Number 80-1480-3

Section 6 Electrical System

S500/S600/S850/S1000/S1200 - SELF CONTAINED - 1 PHASE

High Pressure

(88)

(42)

Ground

(89)

Cutout

Ice Thickness

Water Level Probe

Probe

(55)

Control

Board

(2) (6) (5) (1)

(7) (4)

Trans.

Fuse (7a)

Clean

Left Bin

Right Bin Rmt Bin

Wtr Probe

Ice Probe Harvest

SL-1 SL-2

Low DC

Voltage

Plug

(9)

(25)

(8)

(61)

(26)

(2)

(1)

(6)

(60)

(58)

(20)

(57)

Bin Switch

(21)

Harvest Valve

(77)

(76)

(98)

(59)

(56)

Air Compressor

(When Used)

Clean

OFF

ICE

Contactor

Water Valve

(22)

(80)

Dump Valve

(81)

Water Pump

Terminat es at Pin Connection

Coil

(74)

L2 or N

(99)

(75)

(99)

(Red)

Contactor

Contacts

(51)

(Black)

Overload

(85)

Fan Cycle

Control

Compressor

(Yellow)

(86)

(46)

PTCR

Fan Motor

Run Capacitor

Run

Capacitor

(50)

(45)

SV3130

Part Number 80-1480-3 6-21

Electrical System Section 6

S850/S1000/S1200 - SELF CONTAINED - 3 PHASE

High Pressure

(88)

(42)

Ground

(89)

Cutout

Ice Thickness

Water Level Probe

Probe

(55)

Control

Board

(6) (5)

(1)

(7) (4)

Trans.

Fuse (7a)

Clean

Left Bin Right Bin

Rmt Bin Wtr Probe

Ice Probe Harvest

SL-1

SL-2

Low DC

Voltage

Plug

(9)

(25)

(2)

(8)

(61)

(26)

(1)

(6)

(20)

(60)

(57)

(58)

(98)

(56)

Air Compressor

(When Used)

Bin Switch

Clean OFF

ICE

(21)

Harvest Valve

(77)

(76)

(59)

Contactor

Water Valve

Dump Valve

Water Pump

Terminates at Pin Connection

Coil

(99)

(22)

(80)

(81)

(99)

(75)

(74)

6-22

L2L3

Compressor

Contactor

Contacts

(51)

(85)

Fan Cycle

Control

(75)

Fan Motor

(86)

Run Capacitor

SV3131

Part Number 80-1480-3

Section 6 Electrical System

S500/S600/S850/S1000 - REMOTE - 1 PHASE

High Pressure

(88)

(42)

Ground

(89)

Cutout

Ice Thickness

Water Level Probe

Contactor

Contacts

Probe

(51)

(55)

(Black)

(Red)

Overload

(F1)

Control

Board

(2) (6) (5) (1)

(7) (4)

Trans.

Fuse (7a)

Clean

Left Bin Right Bin

Rmt Bin Wtr Probe

Ice Probe

Harvest SL-1

SL-2

Low DC Voltage

Plug

(25)

(9)

Compressor

(Yellow)

(61)

(26)

(8)

(2)

(46)

(20)

(60)

(57)

(58)

(56)

Air Compressor

(When Used)

Bin Switch

(6)

Clean

(1)

Remote Condenser

OFF ICE

Capacitor

PTCR

(59)

(78)

(77)

(76)

Run

(45)

Water Valve

(21)

HPR Valve

Harvest Valve

Dump Valve

Water Pump

(98)

(83)

Liquid Line Solenoid

Contactor

Coil

(81)

(99)

(74)

(22)

(79)

(50)

L2 or N

(82)

(80)

(22)

(75)

(F2)

Fan Motor

Run Capacitor

SV3158

Part Number 80-1480-3 6-23

Electrical System Section 6

S850/S1000 - REMOTE - 3 PHASE

Water Valve

(20)

(88)

L2L3

Contactor

Contacts

Ground

(89)

High Pressure

Cutout

(42)

Water Level Probe

(55)

Ice Thickness

Probe

(74)

(75)

Control

Board

(2)

(6) (5)

(1) (7)

(4)

Trans.

Fuse (7a)

Clean

Left Bin

Right Bin Rmt Bin

Wtr Probe

Ice Probe Harvest SL-1

SL-2

Low DC Voltage

Plug

(9)

(25)

(2)

(8)

(61)

(60)

(57)

(58)

(56)

(26)

Bin Switch

(6)

(1)

(21)

HPR Valve

(78)

Harvest Valve

(77)

Dump Valve

(76)

Water Pump

(98)

Liquid Solenoid

(83)

(59)

Air Compressor

(When Used)

Clean

OFF

ICE

Contactor Coil

(82)

(81)

(80)

(74)

(79)

(99)

(22)

(82)

(75)

6-24

Compressor

(51)

Fan Motor

Run Capacitor

SV3159

Part Number 80-1480-3

Section 6 Electrical System

S1400/S1600/S1800 - SELF-CONTAINED - 1 PHASE

WATER

(20)

(21)

VALVE

(22)

(89)

(55)

(61)

LH HARVEST SOLENOID

(77)

(87)

HIGH PRESSURE CUTOUT

(88)

CONTROL BOARD

(2)

(6)

(60)

(88)

RH HARVEST

SOLENOID

(80)

(5)

(1)

(7)

(4)

(57)

(76)

DUMP

SOLENOID

(81)

(98)

WATER

PUMP

TERMINATES AT PIN CONNECTION

(74)

(42)

ICE THICKNESS PROBE

WATER LEVEL

PROBE

TRANS.

FUSE (7A)

CLEAN

LEFT BIN RIGHT BIN RMT BIN WTR PROBE

ICE PROBE HARVEST SL-1 SL-2

LOW D.C.

VOLTAGE PLUG

(58)

(59)

AIR

COMP

(56)

(26)

(25)

(9)

(8)

(6)

(1)

AIR

COMPRESSOR

WHEN USED

BIN

SWITCH

CLEAN

OFF

CONTACTOR COIL

ICE

(2)

(46)

PTCR

FAN MOTOR

(AIR COOLED ONLY)

(44)

RUN

CAPACITOR

(45)

(50)

CONTACTOR CONTACTS

(51)

*OVERLOAD

(BLACK)

(86)(85)

FAN CYCLE CONTROL

(RED)

COMPRESSOR

(YELLOW)

L2 OR N

(99)

(75)

RUN CAPACITOR**

Part Number 80-1480-3 6-25

Electrical System Section 6

S1400/S1600/S1800 - SELF-CONTAINED - 3 PHASE

WATER

VALVE

(20)

(61)

(89)

HIGH PRESSURE CUTOUT

(88)

(42)

ICE THICKNESS PROBE

WATER LEVEL PROBE

(55)

CONTROL BOARD (2)

(6)

(5) (1) (7) (4)

TRANS.

FUSE (7A)

CLEAN

LEFT BIN RIGHT BIN RMT BIN WTR PROBE

ICE PROBE HARV SL-1 SL-2

LOW D.C. VOLTAGE PLUG

(9)

(60)

(57)

(58)

AIR COMP

(8)

(26)

(25)

(1)

(2)

(6)

(56)

SWITCH

(21)

(77)

RH HARVEST

SOLENOID

(76)

SOLENOID

(98)

(59)

AIR COMPRESSOR WHEN USED

BIN

CLEAN

OFF

ICE

LH HARVEST

SOLENOID

(88)

DUMP

TERMINATES AT PIN CONNECTION

CONTACTOR COIL

(81)

WATER

PUMP

(74)

(22)

(87)

(80)

(99)

(75)

COMPRESSOR

6-26

CONTACTOR CONTACTS

(51)

(85)

FAN CYCLE CONTROL

(86)

FAN MOTOR

(AIR COOLED ONLY)

RUN CAPACITOR**

Part Number 80-1480-3

Section 6 Electrical System

S1400/S1600/S1800 - REMOTE - 1 PHASE

WATER

VALVE

(89)

HIGH PRESSURE CUTOUT

(88)

(42)

ICE THICKNESS PROBE

WATER LEVEL PROBE

CONTACTOR CONTACTS

(51)

(55)

*OVERLOAD

(BLACK)

CONTROL BOARD (2)

(6) (5)

(1) (7) (4)

TRANS.

FUSE (7A)

CLEAN LEFT BIN RIGHT BIN RMT BIN WTR PROBE

ICE PROBE HARV SL-1 SL-2

LOW D.C. VOLTAGE PLUG

(F1)

(9)

(RED)

COMPRESSOR

(YELLOW)

(8)

PTCR

AIR COMP

(26)

(25)

(1)

(2)

(61)

(60)

(6)

(46)

(20)

(57)

(58)

(56)

(21)

SOLENOID

(78)

RH HARVEST

SOLENOID

(77)

LH HARVEST

SOLENOID

(76)

SOLENOID

(98)

AIR COMPRESSOR WHEN USED

BIN

SWITCH

CLEAN

OFF

ICE

RUN

CAPACITOR

(44)

HPR

(88)

DUMP

(83)

(59)

CONTACTOR COIL

(45)

(80)

LIQUID SOLENOID

(82)

(79)

(87)

(81)

WATER PUMP

(74)

(50)

(22)

(99)

L2 OR N

(75)

(F2)

REMOTE

FAN MOTOR

REMOTE CONDENSER

RUN CAPACITOR

Part Number 80-1480-3 6-27

Electrical System Section 6

S1400/S1600/S1800 - REMOTE - 3 PHASE

WATER

VALVE

(20)

HIGH PRESSURE CUTOUT

(88)

(42)

(89)

ICE THICKNESS PROBE

WATER LEVEL PROBE

(55)

CONTROL BOARD

(2)

(6) (5)

(1) (7) (4)

TRANS.

FUSE (7A)

CLEAN LEFT BIN

RIGHT BIN

RMT BIN

WTR PROBE ICE PROBE HARV

SL-1 SL-2

LOW D.C. VOLTAGE PLUG

(61)

(60)

(57)

(58)

AIR COMP

(9)

(8)

(26)

(2)

(25)

(1)

(56)

SWITCH

(6)

(21)

SOLENOID

(78)

RH HARVEST

SOLENOID

(88)

(77)

LH HARVEST

SOLENOID

(76)

SOLENOID

(98)

(59)

AIR COMPRESSOR WHEN USED

BIN

CLEAN

OFF

ICE

HPR

DUMP

(83)

CONTACTOR COIL

WATER

LIQUID

SOLENOID

(22)

(82)

(79)

(87)

(80)

(81)

(99)

PUMP

(75)

(74)

COMPRESSOR

6-28

CONTACTOR CONTACTS

(51)

(F1)

REMOTE

FAN MOTOR

RUN CAPACITOR

REMOTE CONDENSER

(F2)

Part Number 80-1480-3

Section 6 Electrical System

Component Specifications and Diagnostics

MAIN FUSE Function

The control board fuse stops ice machine operation if electrical components fail causing high amp draw.

Specifications

The main fuse is 250 Volt, 7 amp.

Check Procedure

Warning

High (line) voltage is applied to the control board (terminals #55 and #56) at all times. Removing the control board fuse or moving the toggle switch to OFF will not remove the power supplied to the control board.

1. If the bin switch light is on with the water curtain closed, the fuse is good.

Warning

Disconnect electrical power to the entire ice machine before proceeding.

2. Remove the fuse. Check the resistance across the fuse with an ohm meter.

BIN SWITCH Function

Movement of the water curtain controls bin switch operation. The bin switch has two main functions:

1. Terminating the harvest cycle and returning the ice machine to the freeze cycle.

This occurs when the bin switch is opened and closed again within 30 seconds during the harvest cycle.

2. Automatic ice machine shut-off. If the storage bin is full at the end of a harvest cycle,

the sheet of cubes fails to clear the water curtain and holds it open. After the water curtain is held open for 30 seconds, the ice machine shuts off. The ice machine remains off until enough ice is removed from the storage bin to allow the sheet of cubes to drop clear of the water curtain. As the water curtain swings back to the operating position, the bin switch closes and the ice machine restarts, provide the three-minute delay has expired.

Important

The water curtain must be ON (bin switch(s) closed ) to start ice making.

Reading Result

Open (OL) Replace fuse

Closed (O) Fuse is good

Specifications

The bin switch is a magnetically operated reed switch. The magnet is attached to the lower right corner of the water curtain. The switch is attached to the right bulkhead wall.

The bin switch is connected to a varying D.C. voltage circuit. (Voltage does not remain constant.)

NOTE: Because of a wide variation in D.C. voltage, it is not recommended that a voltmeter be used to check bin switch operation.

Part Number 80-1480-3 6-29

Electrical System Section 6

Symptoms

Bin Switch Fails Open

• The ice machine will not start with the toggle switch in the ice position, but runs normally with the toggle switch in the clean position.

Bin Switch Fails Closed

• Safety limit 2 is recorded in the control board memory and the harvest cycle continues after the ice opens and closes the water curtain (harvest cycle is

3.5 minutes long).

Diagnostic Aids:

• Always use the water curtain magnet to cycle the switch (a larger or smaller magnet will affect switch operation).

• Readings are affected by your test lead connection and VOM battery strength. Verify you have solid connections and a correctly functioning VOM before testing bin switch.

• Open the curtain for 3 seconds, then close the curtain for 3 seconds. This will allow your VOM display to settle.

• With the bin switch closed your meter reading should be 0 (0 to 10 is acceptable). With the curtai n open the reading must be infinity (OL).

Continuity Test

Water Curtain Removal Notes

The water curtain must be on (bin switch closed) to star t ice making. While a freeze cycle is in progress, the water curtain can be removed and installed at any time without interfering with the electrical control sequence.

If the ice machine goes into harvest sequence while the water curtain is removed, one of the following will happen:

• Water curtain remains off: When the harvest cycle time reaches 3.5 minutes and the bin switch is not closed, the ice machine stops as though the bin were full.

• Water curtain is put back on: If the bin switch closes prior to reaching the 3.5minute point, the ice machine immediately returns to another freeze sequence prechill.

1. Disconnect the bin switch wires to isolate the bin switch from the control board.

2. Connect an ohmmeter to the disconnected bin switch wires.

3. Cycle the bin switch open and closed 25 times by opening and closing the water curtain. Watch for consistent readings each time the bin switch is cycled open and closed (bin switch failure could be erratic).

6-30

Part Number 80-1480-3

Section 6 Electrical System

COMPRESSOR ELECTRICAL DIAGNOSTICS

The compressor will not start or will trip repeatedly on overload.

Check Resistance (Ohm) Values

NOTE: Compressor windings can have very low ohm values. Use a properly calibrated meter.

Perform the resistance test after the compressor cools. The compressor dome should be cool enough to touch (below 120°F/49°C) to assure that the overload is closed and the resistance readings will be accurate.

SINGLE PHASE COMPRESSORS

1. Disconnect power from the cuber and remove the wires from the compressor terminals.

2. The resistance values between C and S and between C and R, when added together, should equal the resistance value between S and R.

3. If the overload is open, there will be a resistance reading between S and R, and open readings between C and S and between C and R. Allow the compressor to cool, then check the readings again.

THREE PHASE COMPRESSORS

1. Disconnect power from the cuber and remove the wires from the compressor terminals.

2. The resistance values between L1 and L2, between L2 and L3, and between L3 and L1 should all be equal.

3. If the overload is open, there will be open readings between L1 and L2, between L2 and L3, and between L3 and L1. Allow the compressor to cool, then check the readings again.

Check Motor Windings to Ground

Check continuity between all three terminals and the compressor shell or copper refrigeration line. Scrape metal surface to get good contact. If continuity is present, the compressor windings are grounded and th e compressor should be replaced.

Determine if the Compressor is Seized

Check the amp draw while the compressor is trying to start.

COMPRESSOR DRAWING LOCKED ROTOR The two likely causes of this are:

• Defective starting component

• Mechanically seized compressor To determine which you have:

1. Install high and low side gauges.

2. Try to start the compressor.

3. Watch the pressures closely. A. If the pressures do not move, the compressor is

seized. Replace the compressor.

B. If the pressures move, the compressor is turning

slowly and is not seized. Check the capacitors

and start relay. COMPRESSOR DRAWING HIGH AMPS The continuous amperage draw on start-up should not

be near the maximum fuse size indicated on the serial tag.

Diagnosing Capacitors

• If the compressor attempts to st art, o r hums and trip s

the overload protector, check the starting components before replacing the compressor.

• Visual evidence of capacitor failure can include a

bulged terminal end or a ruptured membrane. Do not assume a capacitor is good if no visual evidence is present.

• A good test is to install a known good substitute

capacitor.

• Use a capacitor tester when checking a suspect

capacitor. Clip the bleed resistor off the capacitor terminals before testing.

Part Number 80-1480-3 6-31

Electrical System Section 6

PTCR DIAGNOSTICS What is a PTCR?

A PTCR (or Positive T emperature Coefficient Resistor) is made from high-purity, semi-conducting ceramics.

A PTCR is useful because of its resistance versus temperature characteristic. The PTCR has a low resistance over a wide (low) temperature range, but upon reaching a certain higher temperature, its resistance greatly increases, virtually stopping current flow. When the source of he at is removed, the PTCR returns to its initial base resistance.

In severe duty cycles, it can be used to repeatedly switch (virtually stop) large currents at line voltages.

PTCR’s have been used for many years in millions of HVAC applications. In place of using the conventional start relay/start capacitor, a simple PTCR provides the starting torque assistance to PSC (Permanent Split Capacitor) single-phase compressors, which can equalize pressures before starting.

Compressor Start Sequence

PTCR’s provide additional starting torque by increasing the current in the auxiliary (start) winding during starting. The PTCR is wired across the run capacitor (in series with the start winding).

1. It is important for the refrigerant discharge and suction pressures to be somewhat equalized prior to the compressor starting. To assure equalization of pressures the harvest valve (and HPR valve on remotes) will energize for 45 seconds prior to compressor starting. The harvest valve (and HPR valve on remotes) remains on for an additional 5 seconds while the compressor is starting.

2. When starting the compressor, the contactor closes and the PTCR, which is at a low resistance value, allows high starting current to flow in the start winding.

3. The current passing through the PTCR causes it to rapidly heat up, and after approximately .25-1 second it abruptly “switches” to a very high resistance, virtually stopping current flow through it.

4. At this point the motor is up to speed and all current going through the start winding will now pass through the run capacitor.

5. The PTCR remains hot and at a high resistance as long as voltage remains on the circuit.

6. It is important to provide time between compressor restarts to allow the PTCR to cool down to near its initial temperature (low resistance). When the contactor opens to stop the compressor, the PTCR cools down to its initial low resistance and is again ready to provide starting torque assistance. To assure the PTCR has cooled down, during an automatic shut-off, the S model ice machine s have a built-in 3-minute off time before it can restart.

6-32

Part Number 80-1480-3

Section 6 Electrical System

S-Model Automatic Shut-Off and Restart

When the storage bin is full at the end of a harvest cycle, the sheet of cubes fails to clear the water curtain and will hold it open. After the water curtain is held open for 30 seconds, the ice machine shuts of f. To assure the PTCR has cooled, the ice machine remains off for 3 minutes before it can automatically restart.

The ice machine remains off until enough ice has been removed from the storage bin to allow the ice to fall clear of the water curtain. As the water curtain swings back to operating position, the bin switch closes and the ice machine restarts, provided the thr ee-minute delay period is complete.

CONTACTOR CONTACTS

COMPRESSOR

RUN CAPACITOR

PTCR

SV1506

During Start-Up (First .25 - 1.0 Seconds)

CONTACTOR CONTACTS

COMPRESSOR

RUN CAPACITOR

Troubleshooting PTCR’s

WHY A GOOD PTCR MAY FAIL TO START THE COMPRESSOR

The PTCR must be cooled before attempting to start the compressor , otherwise the high starting torque may not last long enough.

For example, if the PTCR is properly cooled, say 60°F (15.6°C) when the compressor starts, it will take .25 to

1.0 seconds before its temperature reaches 260°F (126.6°C), and current flow is stopped.

If the PTCR is still warm, say 160°F (71.1°C) when the compressor starts, it will take only .125 to .50 seconds before its temperature reaches 260°F (126.6°C), and current flow is stopped. This decreased time may be insufficient to start the compressor.

A good PTCR may be too hot to operate properly at start-up because:

• The ice machine’s 3-minute delay has been overridden. Opening and closing the service disconnect or cycling the toggle switch from OFF to ICE will override the delay period.

• The control box temperature is too high. Though rare, very high air temperatures (intense sunlight, etc.) can greatly increase the temperature of the control box and its contents. This may require a longer off time to allow the PTCR to cool.

• The compressor has short-cycled, or the compressor overload has opened. Move the toggle switch to OFF and allow the compressor and PTCR to cool.

Continued on next page …

PTCR

SV1507

After Start-Up

(Current Flows Through Run Capacitor)

Part Number 80-1480-3 6-33

Electrical System Section 6

There are other problems that may cause compressor start-up failure with a good PTCR in a new, properly wired ice machine.

• The voltage at the compressor during start-up is too low.

Manitowoc ice machines are rated at ±10% of nameplate voltage at compressor start-up. (Ex: An ice machine rated at 208-230 should have a compressor start-up voltage between 187 and 253 volts.)

• The compressor discharge and suction pressures are not matched closely enough or equalized.

These two pressures must be somewhat equalized before attempting to start the compressor. The harvest valve (and HPR valve on remotes) energizes for 45 seconds before the compressor starts, and remains on 5 seconds after the compressor starts. Make sure this is occurring and the harvest valve (and HPR solenoid) coil is functional before assuming that the PTCR is bad.

CHECKING THE PTCR

Warning

Disconnect electrical power to the entire ice machine at the building electrical disconnect box before proceeding.

Model

S500/S600 8505003 305C20 22-50 Ohms

S850/S1000 8504993 305C19 18-40 Ohms S1200/S1400 S1600/S1800

Manitowoc

Part Number

8504913 305C9 8-22 Ohms

Cera-Mite

Part Number

Room

T emperature

Resistance

SV1540

Manitowoc PTCR’s 8505003 & 8504993

1. Visually inspect the PTCR. Check for signs of physical damage.

NOTE: The PTCR case temperature may reach 210°F (100°C) while the compressor is running. This is normal. Do not change a PTCR just because it is hot.

2. Wait at least 10 minutes for the PTCR to cool to room temperature.

3. Remove the PTCR from the ice machine.

4. Measure the resistance of the PTCR as shown below. If the resistance falls outside of the acceptable range, replace it.

SV1541

Manitowoc PTCR 8504913

6-34

Part Number 80-1480-3

Section 6 Electrical System

DIAGNOSING START COMPONENTS

If the compressor attempts to start, or hums and trips the overload protector, check the start components before replacing the compressor.

Capacitor

Visual evidence of capacitor failure can include a bu lged terminal end or a ruptured membrane. Do not assume a capacitor is good if no visual evidence is present. A good test is to install a known good substitute capacitor . Use a capacitor tester when checking a suspect capacitor. Clip the bleed resistor off the capacitor termina ls before testing.

Relay

The relay has a set of contacts that connect and disconnect the start capacitor from the compressor start winding. The contacts on the relay are norma lly closed (start capacitor in series with the start winding). The relay senses the voltage generated by the start winding and opens the contacts as the compressor motor starts. The contacts remain open until the compressor is deenergized.

Relay Operation Check

1. Disconnect wires from relay terminals.

HARVEST ASSIST AIR COMPRESSOR Function

The air compressor breaks the vacuum between the sheet of ice and the evaporator which results in shorter harvest cycles.

Specifications

115 Volt or 230 Volt - matches the ice machine voltage.

Check Procedure

1. Verify when the air compressor should be running in the sequence of operation.

2. If the compressor is not running when it should be check voltage at the control board.

3. If there is no voltage present at the control board, replace the control board.

4. If there is voltage present at the contro l board check for voltage at the air compressor connector.

5. If there is no voltage present at the air compressor connector replace wire.

6. If there is voltage at the air compressor connector, use a volt ohm meter to verify there is no continuity through the motor windings then replace motor.

2. Verify the contacts are closed. Measure the resistance between terminals 1 and 2. No continuity indicates open contacts. Replace the relay.

3. Check the relay coil. Measure the resistance between terminals 2 and 5. No resistance indicates an open coil. Replace the relay.

Part Number 80-1480-3 6-35

Electrical System Section 6

ICE/OFF/CLEAN TOGGLE SWITCH Function

The switch is used to place the ice machine in ICE, OFF or CLEAN mode of operation.

Specifications

Single-pole, single-throw switch. The switch is connected into a varying low D.C. voltage circuit.

Check Procedure

NOTE: Because of a wide variation in D.C. voltage, it is not recommended that a volt meter be used to check toggle switch operation.

1. Inspect the toggle switch for correct wiring.

2. Isolate the toggle switch by disconnecting the Molex connector.

3. Check continuity across the toggle switch terminals. Note where the wire numbers are connected to the switch terminals, or refer to the wiring diagram to take proper readings.

Switch Setting Terminals Ohm Reading

1-6 Open

ICE

CLEAN

OFF

1-2 Closed 2-6 Open 1-6 Closed 1-2 Open 2-6 Open 1-6 Open 1-2 Open 2-6 Open

4. Replace the toggle switch if ohm readings do not match all three switch settings.

6-36

Part Number 80-1480-3

Section 6 Electrical System

ELECTRONIC CONTROL BOARD

N 115V L2 208-230V

PRIMARY POWER SUPPLY

AC LINE VOLTAGE ELECTRICAL PLUG (NUMBERS MARKED ON WIRES)

MAIN FUSE (7A)

AIR COMPRESSOR (NOT USED ON ALL MODELS)

REMOTE BIN

CLEAN LIGHT (YELLOW)

LEFT BIN LIGHT (GREEN)

RIGHT BIN LIGHT (GREEN) REMOTE BIN LIGHT (GREEN) WATER PROBE LIGHT (GREEN)

ICE PROBE LIGHT (GREEN)

HARVEST LIGHT (RED) SAFETY LIMIT 1 LIGHT (RED)

SAFETY LIMIT 2 LIGHT (RED)

ICE THICKNESS PROBE (3/16'' CONNECTION)

WATER LEVEL PROBE

AUTOMATIC CLEANING SYSTEM (AuCS) PLUG

WATER PURGE ADJUSTMENT

DC LOW VOLTAGE ELECTRICAL PLUG (NUMBERS MARKED ON WIRES)

SV3129

Control Board

Part Number 80-1480-3 6-37

Electrical System Section 6

General

S-Model control boards use a dual voltage transformer. This means only one control board is needed for both 115V and 208-230V use.

Safety Limits

In addition to standard safety controls, such as the high pressure cut-out, the control board has built-in safety limits.

These safety limits protect the ice machine from major component failures. For more information, see “Safety Limits” in Section 7.

Inputs

The control board, along with inputs, controls all electrical components, including the ice machine sequence of operation. Prior to diagnosing, you must understand how the inputs affect the control board operation.

Refer to specific component specifications (inputs), wiring diagrams and ice machine sequence of operation sections for details.

As an example, refer to “Ice Thickness Probe” on the next page for information relating to how the probe and control board function together.

This section will include items such as:

• How a harvest cycle is initiated

• How the harvest light functions with the probe

• Freeze time lock-in feature

• Maximum freeze time

• Diagnosing ice thickness con tr ol circ uit ry

6-38

Part Number 80-1480-3

Section 6 Electrical System

Ice Thickness Probe (Harvest Initiation)

HOW THE PROBE WORKS

Manitowoc’s electronic sensing circuit does not rely on refrigerant pressure, evaporator temperature, water levels or timers to produce consistent ice formation.

As ice forms on the evaporator, water (not ice) contacts the ice thickness probe. After the water completes this circuit across the probe continuously for 6-10 seconds, a harvest cycle is initiated.

SV3135

Ice Thickness Probe

ICE THICKNESS CHECK

The ice thickness probe is factory-set to maintain th e ice bridge thickness at 1/8" (.32 cm).

NOTE: Make sure the water curtain is in place when performing this check. It prevents water from splashing out of the water trough.

1. Inspect the bridge connecting the cubes. It should be about 1/8" (.32 cm) thick.

2. If adjustment is necessary, turn the ice thickness probe adjustment screw clockwise to increase bridge thickness, or counterclockwise to decrease bridge thickness. Set a 1/4” gap between the ice thickness probe and evaporator as a starting point. Then adjust to achieve a 1/8” bridge thickness.

NOTE: The starting point before final adjustment is approximately a 3/16 inch gap.

ADJUSTING SCREW

1/8” ICE BRIDGE THICKNESS

ICE PROBE LIGHT

This light’s primary function is to be on as water con tact s the ice thickness probe during the freeze cycle, and remain on throughout the entire harvest cycle. The light will flicker as water splashes on the probe.

FREEZE TIME LOCK-IN FEATURE

The ice machine control system incorporates a freeze time lock-in feature. This prevents the ice machine from short cycling in and out of harvest.

The control board locks the ice machine in the freeze cycle for six minutes. If water contacts the ice thickness probe during these six minutes, the harvest light will come on (to indicate that water is in contact with the probe), but the ice machine will stay in the freeze cycle. After the six minutes are up, a harvest cycle is initiated. This is important to remember when performing diagnostic procedures on the ice thickness control circuitry.

To allow the service technician to initiate a harvest cycle without delay, this feature is not used on the first cycle after moving the toggle switch OFF and back to ICE.

MAXIMUM FREEZE TIME

The control system includes a built-in safety which will automatically cycle the ice machine into harvest after 60 minutes in the freeze cycle.

SV3132

Ice Thickness Check

Make sure the ice thickness probe wire and the brac ket do not restrict movement of the probe.

Ice Thickness Probe Cleaning

1. Mix a solution of Manitowoc ice machine cleaner and water (2 ounces of cleaner to 16 ounces of water) in a container.

2. Soak ice thickness probe in container of cleaner/ water solution while disassembling and cleaning water circuit components (soak ice thickness probe for 10 minutes or longer).

3. Clean all ice thickness probe surfaces including all plastic parts (do not use abrasives). Verify the ice thickness probe cavity is clean. Thoroughly rinse ice thickness probe (including cavity) with clean water, then dry completely. Incomplete rinsing and

drying of the ice thickness probe can cause premature harvest.

4. Reinstall ice thickness probe, then sanitize all ice machine and bin/dispenser interior surfaces.

Part Number 80-1480-3 6-39

Electrical System Section 6

DIAGNOSING ICE THICKNESS CONTROL CIRCUITRY Ice Machine Does Not Cycle Into Harvest When Water Contacts The Ice Thickness Control Probe Step 1 Bypass the freeze time lock-in feature by moving the ICE/OFF/CLEAN switch to OFF and back to ICE. Step 2 Wait until the water starts to flow over the evaporator (freeze cycle). Step 3 Disconnect the ice thickness control from the control board, then connect a jumper wire from the control

board to any cabinet ground and monitor the harvest light.

Monitoring of Harvest Light Correction

The harvest light comes on, and 10 seconds later, ice machine cycles from freeze to harvest.

The harvest light comes on but the ice machine stays in the freeze sequence.

The harvest light does not come on. The control board is causing the malfunction.

The ice thickness probe is causing the malfunction.

The control circuitry is functioning properly. The ice machine is in a six-minute freeze time lock-in (verify step 1 of this procedure was followed correctly).

HARVEST LIGHT

ICE THICKNESS

PROBE CONNECTION

Ice Machine Cycles Into Harvest Before Water Contact With The Ice Thickness Probe Step 1 Disconnect the ice thickness probe from the control board. Step 2 Wait until water starts to flow over the evaporator, then monitor the harvest light:

Monitoring of Harvest Light Correction

The harvest light stays off and the ice machine remains in the freeze sequence.

The harvest light comes on, and 10 seconds later, the ice machine cycles from freeze to harvest.

The ice thickness probe is causing the malfunction. Verify that the Ice Thickness probe is adjusted correctly. The control board is causing the malfunction.

6-40

Part Number 80-1480-3

Manitowoc S Model User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual