Manitowoc QD0323W, QR0420A, QD0322A, QY0325W, QY0324A Service Manual

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ICE MACHINES

-Mode

2004 Manitowoc Ice, Inc.

80-1597-3

6/04

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

Specifications and design are subject to change without notice.

Safety Notices

As you work on a Q-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:

Procedural Notices

As you work on a Q-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:

NOTE: Text set off as a Note provides you with simple, but useful, extra information about the procedure you are performing.

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.

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.

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

Litho in U.S.A.

Part No. 80-1100-3 1

Table of Contents

Section 1 General Information

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

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

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

Model/Serial Number Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Warranty Coverage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Labor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Exclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Authorized Warranty Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Section 2 Installation Instructions

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

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

Q320/Q370/Q420 Ice Machines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Q200 – Q1000 Ice Machines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Q1300/Q1600/Q1800 Ice Machines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Q1300/Q1600/Q1800 Ice Machines (Cont.) . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Ice Storage Bin Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

S170/S400/S570 Ice Storage Bins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

S320/S420 Ice Storage Bins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

S970 Ice Storage Bins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Remote Condenser Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

JC0495/JC0895/JC1095/JC1395 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

JC1895 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Location of Ice Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Stacking Two Ice Machines on a Single Storage Bin . . . . . . . . . . . . . . . . . . . . 2-5

Ice Machine Heat of Rejection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Leveling the Ice Storage Bin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Air-Cooled Baffle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Electrical Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Fuse/Circuit Breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Minimum Circuit Ampacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Self-Contained Electrical Wiring Connections . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Self Contained Ice Machine

115/1/60 or 208-230/1/60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Self Contained Ice Machine

208-230/3/60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Self Contained Ice Machine

230/1/50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

For United Kingdom Only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Table of Contents (continued)

2 Part No. 80-1100-3

Remote Electrical Wiring Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

Remote Ice Machine With Single Circuit Model Condenser

115/1/60 or 208-230/1/60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

Remote Ice Machine With Single Circuit Model Condenser

208-230/3/60 or 380-415/3/50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

Remote Ice Machine With Single Circuit Model Condenser

230/1/50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

Water Supply and Drain Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

Water Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

Water Inlet Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

Drain Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

Cooling Tower Applications

(Water-Cooled Models) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

Water Supply and Drain Line Sizing/Connections . . . . . . . . . . . . . . . . . . . . . 2-12

Remote Condenser/Line Set Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

Remote Ice Machines

Refrigerant Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

Guidelines for Routing Line Sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

Calculating Remote Condenser Installation Distances . . . . . . . . . . . . . . . . . 2-15

Lengthening or Reducing Line Set Lengths . . . . . . . . . . . . . . . . . . . . . . . . . 2-16

Connecting A Line Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16

Remote Receiver Service Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16

Remote Ice Machine Usage with Non-Manitowoc Multi-Circuit Condensers . 2-17

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

Head Pressure Control Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

Fan Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

Internal Condenser Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

Condenser DT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

Refrigerant Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

Quick Connect Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

Non-Manitowoc Multi-Circuit Condenser Sizing Chart . . . . . . . . . . . . . . . . . 2-18

Installation Check List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19

Additional Checks for Remote Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19

Section 3 Maintenance

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

Operational Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Water Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Ice Thickness Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

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

Cleaning the Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Air-Cooled Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Water-Cooled Condenser

and Water Regulating Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Interior Cleaning and Sanitizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Manitowoc’s Patented Cleaning or Sanitizing Technology . . . . . . . . . . . . . . 3-5

Table of Contents (continued)

Part No. 80-1100-3

AlphaSan“ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Cleaning Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Sanitizing Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Procedure To Cancel A Cleaning Or

Sanitizing Cycle After It Has Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Automatic Cleaning System (AuCS“) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

Removal of Parts For Cleaning/Sanitizing . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Water Treatment/Filtration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14

Filter Replacement Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14

Removal from Service/Winterization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15

Self-Contained Air-Cooled Ice Machines . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15

Water-Cooled Ice Machines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15

Remote Ice Machines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15

AuCS“ Accessory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15

Section 4 Ice Machine Sequence of Operation

Self-Contained Air- and Water-Cooled Q200/Q280/Q320/Q370/Q420/Q450/Q600/Q800/Q1000/Q1300/Q1600/Q1800 . 4-1

Initial Start-Up or Start-Up After Automatic Shut-Off . . . . . . . . . . . . . . . . . . . 4-1

Freeze Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Harvest Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Automatic Shut-Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Remote

Q450/Q600/Q800/Q1000/Q1300/Q1600/Q1800 . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Initial Start-Up or Start-Up After Automatic Shut-Off . . . . . . . . . . . . . . . . . . . 4-3

Freeze Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Harvest Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Automatic Shut-Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Section 5 Water System Ice Making Sequence of Operation

Initial Start-Up or Start-Up After Automatic Shut-Off . . . . . . . . . . . . . . . . . . . 5-1

Freeze Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Water Inlet Valve Safety Shut-Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Harvest Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Automatic Shut-Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Section 6 Electrical System

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

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

1. Initial Start-Up or Start-Up After Automatic Shut-Off . . . . . . . . . . . . . . . . . 6-1

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

1. Initial Start-Up or Start-Up After Automatic Shut-Off . . . . . . . . . . . . . . . . . 6-2

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

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

Remote Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10

Table of Contents (continued)

4 Part No. 80-1100-3

Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-17

Wiring Diagram Legend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-17

Q200/Q280/Q320 - Self Contained - 1 Phase With Terminal Board . . . . . . . 6-18

Q280/Q370 - Self Contained - 1 Phase Without Terminal Board . . . . . . . . . 6-19

Q320 - Self Contained - 1 Phase Without Terminal Board . . . . . . . . . . . . . . 6-20

Q420/Q450/Q600/Q800/Q1000 - Self Contained -

1 Phase With Terminal Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-21

Q420/Q450/Q600/Q800/Q1000 - Self Contained -

1 Phase Without Terminal Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-22

Q800/Q1000 - Self Contained - 3 Phase With Terminal Board . . . . . . . . . . . 6-23

Q800/Q1000 - Self Contained - 3 Phase Without Terminal Board . . . . . . . . 6-24

Q1300/Q1800 - Self Contained - 1 Phase With Terminal Board . . . . . . . . . . 6-25

Q1300/Q1600/Q1800 - Self Contained - 1 Phase Without Terminal Board . 6-26

Q1300/Q1800 - Self Contained - 3 Phase With Terminal Board . . . . . . . . . . 6-27

Q1300/Q1600/Q1800 - Self Contained - 3 Phase Without Terminal Board . 6-28

Q450/Q600/Q800/Q1000 - Remote - 1 Phase With Terminal Board . . . . . . 6-29

Q450/Q600/Q800/Q1000 - Remote - 1 Phase Without Terminal Board . . . . 6-30

Q800/Q1000 -Remote - 3 Phase With Terminal Board . . . . . . . . . . . . . . . . . 6-31

Q800/Q1000 -Remote - 3 Phase Without Terminal Board . . . . . . . . . . . . . . 6-32

Q1300/Q1800 - Remote - 1 Phase With Terminal Board . . . . . . . . . . . . . . . 6-33

Q1300/Q1600/Q1800 - Remote - 1 Phase Without Terminal Board . . . . . . . 6-34

Q1300/Q1800 - Remote - 3 Phase With Terminal Board . . . . . . . . . . . . . . . 6-35

Q1300/Q1600/Q1800 - Remote - 3 Phase Without Terminal Board . . . . . . . 6-36

Component Specifications and Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-38

Main Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-38

Bin Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-38

Compressor Electrical Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-40

PTCR Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-41

ICE/OFF/CLEAN Toggle Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-44

Control Board Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-44

Electronic Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-45

Ice Thickness Probe (Harvest Initiation) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-47

How The Probe Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-47

Harvest/Safety Limit Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-47

Freeze Time Lock-In Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-47

Maximum Freeze Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-47

Ice Thickness Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-47

Diagnosing Ice Thickness Control Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . 6-48

Water Level Control Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-50

Water Level Probe Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-50

Water Inlet Valve Safety Shut-Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-50

Freeze Cycle Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-50

Harvest Cycle Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-50

Diagnosing Freeze Cycle Potable Water Level Control Circuitry . . . . . . . . . 6-51

Diagnosing An Ice Machine That Will Not Run . . . . . . . . . . . . . . . . . . . . . . . . . 6-54

Table of Contents (continued)

Part No. 80-1100-3

Section 7 Refrigeration System

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

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

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

Q1300/Q1600/Q1800 Refrigeration Tubing Schematics . . . . . . . . . . . . . . . 7-6

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-17

Analyzing Suction Pressure

During Freeze Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-18

Single Expansion Valve Ice Machines Comparing Evaporator Inlet and

Outlet Temperatures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-20

Harvest Valve Temperature Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-21

Discharge Line Temperature Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-22

How to Use the Refrigeration System

Operational Analysis Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-24

Refrigeration System Operational Analysis Tables . . . . . . . . . . . . . . . . . . . . 7-25

Harvest Pressure Regulating

(H.P.R.) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-27

Headmaster Control Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-29

Pressure Control Specifications and Diagnostics . . . . . . . . . . . . . . . . . . . . . . 7-31

Fan Cycle Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-31

High Pressure Cut-Out (HPCO) Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-31

Cycle Time/24 Hour Ice Production/Refrigerant Pressure Charts . . . . . . . . . 7-32

Q200 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-32

Q280 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-33

Q320 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-34

Q370 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-35

Q420/450 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-36

Q450 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-37

Q600 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-37

Q800 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-39

Q1000 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-40

Q1300 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-42

Q1600 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-43

Q1800 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-44

Table of Contents (continued)

6 Part No. 80-1100-3

Refrigerant Recovery/Evacuation and Recharging . . . . . . . . . . . . . . . . . . . . . 7-46

Normal Self-Contained Model Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . 7-46

Normal Remote Model Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-48

System Contamination Clean-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-52

Replacing Pressure Controls Without

Removing Refrigerant Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-54

Filter-Driers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-56

Total System Refrigerant Charges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-56

Refrigerant Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-57

Refrigerant Re-Use Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-58

HFC Refrigerant Questions and Answers . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-59

Part No. 80-1100-3 1-1

Section 1

General Information

Model Numbers

This manual covers the following models:

NOTE: Model numbers ending in 3 indicate a 3-phase unit. Example: QY1804A3

How to Read a Model Number

Ice Cube Sizes

Self-Contained

Air-Cooled

Self-Contained

Water-Cooled

Remote

QR0320A QD0322A QY0324A

QR0321W QD0323W QY0325W

QR0420A QD0422A QY0424A

QR0421W QD0423W QY0425W

QR0200A QD0202A QY0204A

QR0201W QD0203W QY0205W

QR0280A QD0282A QY0284A

QR0281W QD0283W QY0285W

QD0372A QY0374A

QD0373W QY0375W

QR0450A QD0452A QY0454A

QR0451W QD0453W QY0455W

QR0490N QD0492N QY0494N

QR0600A QD0602A QY0604A

QR0601W QD0603W QY0605W

QR0690N QD0692N QY0694N

QR0800A QD0802A QY0804A

QR0801W QD0803W QY0805W

QR0890N QD0892N QY0894N

QR1000A QD1002A QY1004A

QR1001W QD1003W QY1005W

QR1090N QD1092N QY1094N

QR1300A QD1302A QY1304A

QR1301W QD1303W QY1305W

QR1390N QD1392N QY1394N

QD1603W QY1605W

QD1692N QY1694N

QR1800A QD1802A QY1804A

QR1801W QD1803W QY1805W

QR1890N QD1892N QY1894N

Warning

PERSONAL INJURY POTENTIAL

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

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

Q R 0450 A

ICE M A CHINE

MODEL

ICE CUBE SIZE R REG ULAR

D DICE Y HALF DICE

# C UB E SIZE 0 REG ULAR

1 R E G U L AR 2 DICE 3 DICE 4 H A LF-DICE 5 H A LF-DICE

CONDEN SER TY PE AIR-COOLED

W ATER-COOLED AIR-COOLED W ATER-COOLED AIR-COOLED W ATER-COOLED

A SELF-CON TAINED AIR-COOLED W SELF-CON TAINED W ATER-COOLED N REMO TE AIR-COOLED

9 REMO TE

AIR-COOLED

CONDEN SER TY PE

ICE M A CHINE

SERIES

General Information Section 1

1-2 Part No. 80-1100-3

Model/Serial Number Location

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

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

Figure 1-1. Model/Serial Number Location

SV1600

Section 1 General Information

Part No. 80-1100-3 1-3

Warranty Coverage

GENERAL

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

Contact your local Manitowoc Distributor or Manitowoc Ice, Inc. if you need further warranty information.

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 total) 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 included in the ice machine’s 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 installation of the ice machine, electrical supply , water supply 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.

Important

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

General Information Section 1

1-4 Part No. 80-1100-3

THIS PAGE INTENTIONALLY LEFT BLANK

Part No. 80-1100-3 2-1

Section 2

Installation Instructions

General

Refer to Installation Manual for complete installation guidelines.

Ice Machine Dimensions

Q320/Q370/Q420 ICE MACHINES

Important

Failure to follow these installation guidelines may affect warranty coverage.

SV1602 SV1611

WATER COOLED AIR COOLED

Ice Machine Dimension H

Q320 21.5 in (54.6 cm) Q370 21.5 in (54.6 cm) Q420 26.5 in (67.3 cm)

Installation Instructions Section 2

2-2 Part No. 80-1100-3

Q200 – Q1000 ICE MACHINES Q1300/Q1600/Q1800 ICE MACHINES

SV1612 SV1628

WATER-COOLED SELF CONTAINED

AIR-COOLED

Ice Machine Dimension H

Q200 – Q280 16.5 in (41.9 cm)

Q450 21.5 in (54.6 cm) Q600 21.5 in (54.6 cm) Q800 26.5 in (67.3 cm)

Q1000 29.5 in (74.9 cm)

SV1613

AIR-COOLED

Ice Machine Dimension H

Q1300/Q1600 29.5 in (74.9 cm)

Q1800 29.5 in (74.9 cm)

SV1627

SELF CONTAINED

WATER-COOLED

Section 2 Installation Instructions

Part No. 80-1100-3 2-3

Q1300/Q1600/Q1800 ICE MACHINES (CONT.)

Ice Storage Bin Dimensions

S170/S400/S570 ICE STORAGE BINS

S320/S420 ICE STORAGE BINS

SV1629

REMOTE AIR-COOLED

Bin Model Dimension A Dimension B

S170 29.5 in (74.9 cm) 19.1 in (48.5 cm) S400 34.0 in (86.3 cm) 32.0 in (81.3 cm) S570 34.0 in (86.3 cm) 44.0 in (111.7 cm)

Bin Model Dimension A Dimension B

S320 34.0 in (86.3 cm) 32.0 in (81.3 cm) S420 34.0 in (86.3 cm) 44.0 in (111.7 cm)

SV1609

SV1614

Installation Instructions Section 2

2-4 Part No. 80-1100-3

S970 ICE STORAGE BINS

Remote Condenser Dimensions

JC0495/JC0895/JC1095/JC1395

JC1895

Warning

All Manitowoc ice machines require the ice storage system (bin, dispenser, etc.) to incorporate an ice deflector.

The Q1300, Q1600 and Q1800 series ice machines require adding Manitowoc Ice Deflector Kit K 00139 when installing with non-Manitowoc ice storage systems.

Prior to using a non-Manitowoc ice storage system with other Manitowoc ice machines, contact the manufacturer to assure their ice deflector is compatible with Manitowoc ice machines.

SV1610 SV1297

SV1301

Section 2 Installation Instructions

Part No. 80-1100-3 2-5

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.

• Th e 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).

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

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

Stacking Two Ice Machines on a Single Storage Bin

A stacking kit is required for stacking two ice machines. Installation instructions are supplied with the stacking kit.

Ice Machine 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-contained aircooled 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.

Q1300/Q1600/

Q1800

Self-Contained

Air-Cooled

Water-Cooled

and Remote

Top/Sides 24" (61 cm) 8" (20.3 cm)

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

Q370

Self-Contained

Air-Cooled

Water-Cooled

Top/Sides 12" (30.5 cm) 5" (12.7 cm)

Back 5" (127 mm) 5" (12.7 cm)

All other

Q models

Self-Contained

Air-Cooled

Water-Cooled

and Remote

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

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

There is no minimum clearance required. This value is

recommended for efficient operation and servicing only. Q1600 is not available as an air-cooled model.

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” on Page 3-

14.

Q450/Q600/

Q800/Q1000

Stacked

Self-Contained

Air-Cooled

Stacked

Water-Cooled

and Remote*

Top/Sides 16" (40.64 cm) 5" (12.70 cm)

Back 5" (12.70 cm) 5" (12.70 cm)

Q1300/Q1600/

Q1800

Top/Sides 48" (121.92 cm) 24" (60.96 cm)

Back 12" (30.48 cm) 12" (30.48 cm)

*There is no minimum clearance required. This value is

recommended for efficient operation and servicing only. Q1600 is not available as an air-cooled model.

Series

Ice Machine

Heat of Rejection

B.T.U./Hour

Air Conditioning

Because the heat of rejection varies during the ice making cycle,

the figure shown is an average.

Peak

Q320 4,600 6,200 Q370 3,900 5,950 Q420 7,000 9,600 Q200 3,800 5,000 Q280 3,800 6,000 Q450 7,000 9,600 Q600 9,000 13,900

Q800 12,400 19,500 Q1000 16,000 24,700 Q1300 24,000 35,500 Q1600 24,000 35,500 Q1800 36,000 50,000

Installation Instructions Section 2

2-6 Part No. 80-1100-3

Leveling the Ice Storage Bin

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

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

3. Move the bin into its final position.

4. Level the bin to assure that the bin door closes and seals properly. Use a level on top of the bin. Turn each foot as necessary to level the bin.

NOTE: An optional caster assembly is available for use in place of the legs. Installation instructions are supplied with the casters.

Figure 2-1. Leveling Leg and Foot

Air-Cooled Baffle

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.

Figure 2-2. Air Baffle

Caution

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

SV1606

THREAD LEVELING LEG INTO BASE OF

CABINET

THREAD ‘FOOT’ IN AS

FAR AS POSSIBLE

SV1607

AIR

BAFFLE

SCREWS

Section 2 Installation Instructions

Part No. 80-1100-3 2-7

Electrical Service

GENERAL

VOLTAGE

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

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.

Warning

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

Warning

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

Installation Instructions Section 2

2-8 Part No. 80-1100-3

Table 2-1. Q320/370/420 Ice Machines

Table 2-2. Q200 - Q1000 Ice Machines

Ice Machine

Voltage

Phase

Cycle

Air-Cooled Water Cooled

Maximum Fuse/

Circuit Breaker

Minimum

Circuit Amps

Maximum Fuse/

Circuit Breaker

Minimum

Circuit Amps

Q320

115/1/60 15 11.2 15 10.5

208-230/1/60 15 4.8 15 4.2

230/1/50 15 5.2 15 4.7

Q370

115/1/60 20 12.9 20 12.2

208-230/1/60 15 6.2 15 5.8

230/1/50 15 6.2 15 5.8

Q420

115/1/60 20 12.3 20 11.4

208-230/1/60 15 7.8 15 7.4

230/1/50 15 6.3 15 5.9

Ice Machine

Voltage

Phase

Cycle

Air-Cooled Water Cooled Remote

Maximum

Fuse/Circuit

Breaker

Minimum

Circuit Amps

Maximum

Fuse/Circuit

Breaker

Minimum

Circuit Amps

Maximum

Fuse/Circuit

Breaker

Minimum

Circuit Amps

Q200

115/1/60 15 11.6 15 10.9 N/A N/A

208-230/1/60 15 5.4 15 4.8 N/A N/A

230/1/50 15 5.2 15 4.9 N/A N/A

Q280

115/1/60 20 12.6 20 11.7 N/A N/A

208-230/1/60 15 5.7 15 5.2 N/A N/A

230/1/50 15 5.7 15 5.2 N/A N/A

Q450

115/1/60 20 12.8 20 11.9 20 13.6

208-230/1/60 15 7.8 15 7.4 N/A N/A

230/1/50 15 6.1 15 5.7 N/A N/A

Q600

208-230/1/60 15 9.2 15 8.7 15 9.3

230/1/50 15 9.2 15 8.8 15 9.4

Q800

208-230/1/60 20 12.1 20 11.4 20 11.9 208-230/3/60 15 8.9 15 8.2 15 8.9

230/1/50 20 12.0 20 10.6 20 11.2

Q1000

208-230/1/60 20 14.3 20 13.2 20 14.2 208-230/3/60 15 9.8 15 8.8 15 9.9

230/1/50 20 15.6 20 14.2 20 14.6

Q1300

208-230/1/60 30 19.5 30 18.1 30 19.8 208-230/3/60 20 13.1 20 11.6 20 12.7

230/1/50 30 15.7 30 14.3 30 14.7

380-415/3/50 N/A N/A N/A N/A 15 7.3

Q1600

208-230/1/60 N/A N/A 30 17.2 30 18.2 208-230/3/60 N/A N/A 20 11.0 20 12.0

230/1/50 N/A N/A N/A N/A N/A N/A

380-415/3/50 N/A N/A N/A N/A N/A N/A

Q1800

208-230/1/60 40 28.1 40 26.7 40 26.9 208-230/3/60 20 15.5 20 14.1 20 13.9

230/1/50 40 23.3 40 21.9 40 22.2

380-415/3/50 N/A N/A N/A N/A 15 9.1

Section 2 Installation Instructions

Part No. 80-1100-3 2-9

Self-Contained Electrical Wiring Connections

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

SELF CONTAINED ICE MACHINE 208-230/3/60

SELF CONTAINED ICE MACHINE 230/1/50

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 drawings, the ice machine field wiring connections may use either wire nuts or screw terminals.

N=115V

L2=208-230V

GROUND

ICE MACHINE

CONNECTIONS

SV1258

GROUND

ICE MACHINE

CONNECTIONS

TO SEPARATE

FUSE/BREAKER

SV1190

GROUND

ICE MACHINE

CONNECTIONS

TO SEPARATE

FUSE/BREAKER.

DISCONNECT ALL

POLES.

SV1191

For United Kingdom Only

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

• The wire which is colour ed green and yello w

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

the letter E or by the earth ground symbol or coloured green or green and yellow.

• The wire coloured blue

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

• The wire coloured brown

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

TO SEPARATE

FUSE/BREAKER

Installation Instructions Section 2

2-10 Part No. 80-1100-3

Remote Electrical Wiring Connections

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

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

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

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 drawings, the ice machine field wiring connections may use either wire nuts or screw terminals.

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

GROUND

SINGLE CIRCUIT

REMOTE

CONDENSER

ICE

MACHINE

SV1255

GROUND

TO SEPARATE

FUSE/BREAKER

GROUND

N=115V OR L2=208-230V

GROUND

ICE

MACHINE

SV1199

GROUND

TO SEPARATE

FUSE/BREAKER

GROUND

NOTE: FAN MOTOR IS 208-230V

SINGLE CIRCUIT

REMOTE

CONDENSER

SINGLE CIRCUIT

REMOTE

CONDENSER

NOTE: FAN MOTOR IS 220-240V

ICE

MACHINE

GROUND

TO SEPARATE

FUSE/BREAKER

(220-240).

DISCONNECT ALL

POLES.

SV1256

Section 2 Installation Instructions

Part No. 80-1100-3 2-11

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.

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.

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

• Insulate water inlet lines to prevent condensation.

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 large enough to accommodate drainage from all drains.

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

• 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 rejection, a nd 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 not exceed 90°F (32.2°C).

• Water flow through the condense r must not 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).

Important

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

Installation Instructions Section 2

2-12 Part No. 80-1100-3

WATER SUPPLY AND DRAIN LINE SIZING/CONNECTIONS

Figure 2-3. Typical Water Supply Drain Installation

Caution

Plumbing must conform to state and local codes.

Location Water Temperature Water Pressure Ice Machine Fitting

Tubing Size Up to Ice

Machine Fitting

Ice Making Water Inlet

33°F (0.6°C) Min.

90°F (32.2°C) Max.

20 psi (137.9 kPA) Min.

80 psi (551.5 kPA) Max.

3/8" Female Pipe Thread

3/8" (9.5 mm) minimum

inside diameter

Ice Making

Water Drain

--- ---

1/2" Female Pipe Thread

1/2" (12.7 mm) minimum

inside diameter

Condenser Water Inlet

33°F (0.6°C) Min.

90°F (32.2°C) Max.

20 psi (137.9 kPA) Min.

150 psi (1034.2 kPA) Max.

Q1300/Q1600/Q1800 - 1/2" Female Pipe Thread

All Others - 3/8" Female Pipe Thread

Condenser

Water Drain

--- ---

1/2" Female Pipe Thread

1/2" (12.7 mm) minimum

inside diameter

Bin Drain --- ---

3/4" Female Pipe Thread

3/4" (19.1 mm) minimum

inside diameter

SV1626

Section 2 Installation Instructions

Part No. 80-1100-3 2-13

Remote Condenser/Line Set Installation

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.

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.

Figure 2-4. 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 ch art below.)

Ice Machine

Remote Single

Circuit

Condenser

Line Set*

Q490 JC0495 RT-20-R404A

RT-35-R404A RT-50-R404A

Q690 JC0895

Q890 Q1090 JC1095 Q1390 JC1395 RL-20-R404A

RL-35-R404A RL-50-R404A

Q1690 JC1695 Q1890 JC1895

*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 (-28.9°C) 120°F (49°C)

IMPORTANT

EPA CERTIFIED TECHNICIANS

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

30.5 m), add

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

nameplate charge. Tubing length: ______________________________ Refrigerant added to nameplate: ________________ New total refrigerant charge: ___________________

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.

Ice Machine

Nameplate Charge

(Charge Shipped in Ice Machine)

Refrigerant to be Added for

50'-100' Line Sets

Maximum System Charge

(Never Exceed) Q490 6 lb. (96 oz.) None 6 lb. (96 oz.) Q690 8 lb. (128 oz.) None 8 lb. (128 oz.) Q890 8 lb. (128 oz.) None 8 lb. (128 oz.)

Q1090 9.5 lb. (152 oz.) None 9.5 lb. (152 oz.) Q1390 12.5 lb. (200 oz.) 1.5 lb. (24 oz) 14 lb. (224 oz.) Q1690 15 lb. (240 oz.) 2.0 lb. (32 oz) 17 lb. (272 oz.) Q1890 15 lb. (240 oz.) 2.0 lb. (32 oz) 17 lb. (272 oz.)

Installation Instructions Section 2

2-14 Part No. 80-1100-3

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 combin ed, they must fit within approved specifications. The following guidelines, drawings and calculation methods must be followed to verify a proper remote condenser installation.

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 (See Figure 2-5). 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 (See Figure 2-5). Do not coil tubing vertically.

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

Figure 2-5. Routing Line Sets

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.

DOWNWARD

HORIZONTAL

SPIRAL

SV1204

Section 2 Installation Instructions

Part No. 80-1100-3 2-15

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 hold a charge sufficient to operate the ice machine in ambient temperatures between -20°F (-28.9°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).

Calculated Line Set Distance

The maximum distance is 150' (45.7 m). Line set rises, drops, horizontal runs (o r 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.

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 horizontal d istance to get the tot al calc ulated distance. If this total exceeds 150' (45.7 m), move the condenser to a new location and perform the calculations again.

Maximum Line Set Distance Formula

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.

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

Figure 2-6. Combination of a Rise

and a Horizontal Run

Figure 2-7. Combination of a Drop

and a Horizontal Run

Figure 2-8. Combination of a

Rise, a Drop and a Horizontal Run

SV1196 SV1195 SV1194

Installation Instructions Section 2

2-16 Part No. 80-1100-3

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 and insulate new 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 coup lings 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:

6. Check all fittings for leaks.

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 panels.

2. Remove the receiver service valve cap.

3. Backseat (open) the valve.

4. Reinstall the cap and panels.

Figure 2-9. Backseating the Receiver Service Valve

Liquid Line Discharge Line

10-12 ft lb.

(13.5-16.2 N•m)

35-45 ft lb.

(47.5-61.0 N•m)

SV1603

REMOVE FRONT, TOP, AND LEFT SIDE PANEL FOR ACCESS TO RECEIVER VALVE

TURN COUNTERCLOCKWISE TO OPEN

RECEIVER SERVICE VALVE CAP (TURN COUNTERCLOCKWISE TO REMOVE)

Section 2 Installation Instructions

Part No. 80-1100-3 2-17

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. Q-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

approval is for full warranty coverage to be extended to the Manitowoc manufactured part of the system. Since Manitowoc does not

test the 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..

HEAD PRESSURE CONTROL VALVE

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

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 circuit 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 motor

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 Page 2-18). Do not exc eed internal volume and try

to add charge to compensate, as compressor failur e 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.)

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.

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.

Caution

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

Caution

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

Installation Instructions Section 2

2-18 Part No. 80-1100-3

NON-MANITOWOC MULTI-CIRCUIT CONDENSER SIZING CHART

Figure 2-10. Typical Single Circuit Remote Condenser Installation

Ice

Machine

Model

Refrigerant Heat of Rejection

Internal

Condenser

Volume (cu ft)

Design

Pressure

Quick Connect Stubs-

Male Ends

Head

Pressure

Control

Valve

Type Charge

Average

Btu/hr

Peak

Btu/hr

Min Max Discharge Liquid

Q450 R-404A 6 lbs. 7,000 9,600 0.020 0.035 500 psig

safe working

pressure

coupling

P/N

83-6035-3

coupling

P/N

83-6034-3

Manitowoc

P/N

83-6809-3

Q600 R-404A 8 lbs. 9,000 13,900 0.045 0.060 Q800 R-404A 8 lbs. 12,400 19,500 0.045 0.060

2,500 psig

burst

pressure

mounting flange P/N 83-6006-3

mounting flange P/N 83-6005-3

substitutes

Q1000 R-404A 9.5 lbs. 16,000 24,700 0.065 0.085 Q1300 R-404A 14 lbs.124,000 35,500 0.085 0.105 Q1600 R-404A 17 lbs.136,000 50,000 0.130 0.170 Q1800 R-404A 17 lbs.

Amount reflects additional R-404A refrigerant added to nameplate charge for 50' to 100' line sets, to ensure proper operation at all ambient

conditions. Q1300 has 1.5 lbs. additional R-404A. Q1600 and Q1800 has 2.0 lbs. additional R-404A

36,000 50,000 0.130 0.170

SV1615

SINGLE CIRCUIT REMOTE CONDENSER

ELECTRICAL DISCONNECT

DISCHARGE LINE

LIQUID LINE

ELECTRICAL DISCONNECT

ELECTRICAL SUPPLY

ICE MACHINE

BIN

DISCHARGE REFRIGERANT LINE

LIQUID REFRIGERANT LINE

36.00" (91.44 cm) DROP

Section 2 Installation Instructions

Part No. 80-1100-3 2-19

Installation Check List

Is the Ice Machine level?

Has all of the internal packing been removed?

Have all of the electrical and water connections

been made?

Has the supply voltage been tested and checked

against the rating on the nameplate?

Is there proper clearance around the ice machine

for air circulation?

Has the ice machine been installed where

ambient temperatures will remain in the range of 35° - 110°F (1.7° - 43.3°C)?

Has the ice machine been installed where the

incoming water temperature will remain in the range of 33° - 90°F (0.6° - 32.2°C)?

Is there a separate drain for the water-cooled

condenser?

Is the water trough drain plug installed? (The drai n

plug is taped to the top of the water pump).

Are the ice machine and bin drains vented?

Are all electrical leads free from contact with

refrigeration lines and moving equipment?

Has the owner/operator been instructed regarding maintenance and the use of Manitowoc Cleaner and Sanitizer?

Has the owner/operator completed the warranty registration card?

Has the ice machine and bin been sanitized?

Is the toggle switch set to ice? (The toggle switch is located directly behind the front panel).

Is the ice thickness control set correctly? (Refer to Operational Checks on page 3-4 of this manual to check/set the correct ice bridge thickness).

Additional Checks for Remote Models

Has the receiver service valve been opened?

Does the remote condenser fan operate properly after start-up?

Has the remote condenser been located where ambient temperatures will remain in the range of

-20° - 120°F ( -6.6 - 49°C).

Is the line set routed properly?

Installation Instructions Section 2

2-20 Part No. 80-1100-3

THIS PAGE INTENTIONALLY LEFT BLANK

Part No. 80-1100-3 3-1

Section 3

Maintenance

Component Identification

Figure 3-1. Component Identification (Typical Q450 Shown)

WATER COOLED

MODEL

CONDENSER WATER REGULATING VALVE

WATER

CONDENSER

ICE THICKNESS

PROBE

EVAPORATOR

HIGH PRESSURE CUTOUT/

MANUAL RESET

(When applicable)

WATER

CURTAIN

WATER

TROUGH

ICE/OFF/CLEAN

SWITCH

WATER

PUMP

BIN SWITCH

DISTRIBUTION

TUBE

SV1604G

SV1605

HARVEST VALVE

AIR CONDENSER

REMOTE COUPLINGS

COMPRESSOR

DRAIN HOSE

WATER DUMP VALVE

Maintenance Section 3

3-2 Part No. 80-1100-3

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

• a fter cleaning and sanitizing NOTE: Routine adjustments and maintenance

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.). Repair or replace the probe as necessary.

Figure 3-2. Water Level Probe

ICE THICKNESS CHECK

The ice thickness probe is factory-set to maintain the ice bridge thickness at 1/8" (3.2 mm).

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" (3.2 mm) thick.

2. If adjustment is necessary, turn the ice thickness probe adjustment screw clockwise to increase bridge thickness, counterclockwise to decrease bridge thickness.

NOTE: Turning the adjustment 1/3 of a turn will change the ice thickness about 1/16" (1.5 mm).

Figure 3-3. Ice Thickness Check

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

SV1616

SV1208

ADJUSTING SCREW

1/8” ICE BRIDGE THICKNESS

Section 3 Maintenance

Part No. 80-1100-3 3-3

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.

• The harvest sequence water purge may be set to 15, 30, or 45 seconds.

• 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.

Figure 3-4. Water Purge Adjustment

Cleaning the Condenser

AIR-COOLED CONDENSER

(SELF-CONTAINED AND REMOTE MODELS) 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.

1. The washable aluminum filter on self-contained ice machines is designed to catch dust, dirt, lint and grease. This helps keep the co ndenser clean. Clean the filter with a mild soap and water solution.

Figure 3-5. Self-Contained Air-Cooled Filter

2. Clean the outside of the condenser (bottom of a remote condenser) with a soft brush or a vacuum with a brush attachment. Clean from top to bottom, not side to side. Be careful not to bend the condenser fins.

Continued on next page …

Important

The harvest sequence water purge is f actory-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.

SV1617

CONTROL BOARD

WATER PURGE ADJUSTMENT

Warning

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

Caution

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

SV1608

AIR FILTER

Maintenance Section 3

3-4 Part No. 80-1100-3

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.

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

Figure 3-6. 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.

WATER-COOLED CONDENSER AND WATER REGULATING VALVE

Symptoms of restrictions in the condenser water circuit include:

• Low ice production

• High water consumption

• High operating temperatures

• High operating pressures 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.

The cleaning procedures require special pumps and cleaning solutions. Follow the manufacturer’s instructions for the specific cleaner being used.

Caution

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

CONDENSER

SV1515

FIN COMB

“COMB” DOWN ONLY

Section 3 Maintenance

Part No. 80-1100-3 3-5

Interior Cleaning and Sanitizing

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 or installa tion of AuCS



accessory (Automatic Cleaning System). If required, an extremely dirty ice machine may be taken apart for cleaning and sanitizing.

MANITOWOC’S PATENTED CLEANING OR SANITIZING TECHNOLOGY

Manitowoc Ice Machines include technology that allows the initiation and completion of a cleaning or sanitizing cycle at the flip of a switch. This cycle will permit cleaning or sanitizing of all surfaces that come in contact with the water distribution system. Periodic maintenance must be performed that includes sanitizing the bin (or dispenser) and adjacent surface areas, which cannot be contacted by the water distribution system.

This technology will also allow initiation and completion of a clean or sanitize cycle, after which the ice machine automatically starts ice making again.

Refer to the cleaning or sanitizing procedure for complete details.

The AuCS Accessory can be set to automatically start and finish a clean or sanitize cycle every 2, 4, or 12 weeks. This accessory monitors ice-making cycles and initiates a cleaning or sanitizing cycle automatically. Refer to Automatic Cleaning System (AuCS) Accessory for further details.

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



is the element silver in the form of silver ions

(Ag+). AlphaSan



slowly releases silver ions via an ion

exchange mechanism. When AlphaSan



is 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



helps prevent bio-film build up it does not eliminate the need for periodic cleaning and maintenance. AlphaSan



has no adverse effect on the

taste of the ice or beverage.

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 th eir labeling. Read and understand all labels printed on bottles before use.

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.

Maintenance Section 3

3-6 Part No. 80-1100-3

CLEANING PROCEDURE

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.

Step 2 To start cleaning, plac e 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 one minute or until water starts to flow over the evaporator.

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

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 mode is completed. This entire cycle lasts approximately 25 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

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 cleaning cycle is completed, an ice

making sequence will start automatically.

Caution

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

Model Amount of Cleaner

Q200 Q280 Q320 Q370 3 ounces (90 ml)

Q420 Q450 Q600 Q800 5 ounces (150 ml)

Q1000 Q1300

Q1600 Q1800

9 ounces (270 ml)

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.

Section 3 Maintenance

Part No. 80-1100-3 3-7

SANITIZING PROCEDURE

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

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

Step 3 Mix a solution of water and 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.

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.

Solution Type Water Mixed With

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

Maintenance Section 3

3-8 Part No. 80-1100-3

AUTOMATIC CLEANING SYSTEM (AuCS)

This accessory monitors ice making cycles and initiates cleaning (or sanitizing) procedures automatically. The AuCS



Accessory can be set to automatically clean or

sanitize the ice machine every 2, 4, or 12 weeks.

Automatic Operation

The following occurs when the toggle switch is in the ICE position:

• The ice machine control board counts the number of ice harvest cycles.

•The AuCS



accessory interrupts the ice making mode and starts the cleaning (or sanitizing) mode when the harvest count equals the “Frequency of Cleaning” setting of the AuCS



• When the automatic cleaning (or sanitizing) cycle is complete (approximately 25 minutes), ice making resumes automatically, and the “Harvest Count” is reset to zero.

Manual Start Operat ion 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.

Step 2 To start the automatic cleaning system, move the toggle switch to 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 Self Cleaning mode. The AuCS



then automatically adds cleaner or sanitizer to the ice machine.

Step 3 The ice machine will automatically time out a ten minute cleaning or sanitizing cycle, followed by six rinse cycles, (de-energize the Clean light) and stop. This entire cycle lasts approximately 25 minutes.

Step 4 After the cleaning or sanitizing cycle stops, move the toggle switch to ICE position.

Step 5

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

cleaning or sanitizing cycle, 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 toggle switch from CLEAN to ICE position.

C. When the cleaning or sanitizing cycle is

completed, the clean light will turn off and an ice making sequence will start automatically.

Caution

Refer to the AuCS Accessory Installation - Use and Care Manual for complete details on the installation, operation, maintenance and cautionary statements of this accessory.

Important

Opening the curtain switch will interrupt the cleaning or sanitizing sequence. The sequence will resume from the point of interruption when the curtain recloses.

Caution

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

Section 3 Maintenance

Part No. 80-1100-3 3-9

REMOVAL OF PARTS FOR CLEANING/SANITIZING

1. Turn off the water supply to the ice machine at the water service valve.

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

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

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

5. Use the solution and a brush to clean the top, sides, and bottom evaporator extrusions; the inside of the ice machine panels; and the entire inside of the bin.

6. Thoroughly rinse all of the parts and surfaces with clean water.

7. 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 results, brush o r wipe the probes off while rinsing it. Thoroughly dry the probes before installing them.

8. Turn on the water and electrical supply.

Warning

Disconnect electric power to the ice machine at the electric switch box before proceeding.

Warning

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

Solution Type Water Mixed With

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

Sanitizer 4 gal. (15 l) 1 oz (30 ml) sanitizer

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.

Maintenance Section 3

3-10 Part No. 80-1100-3

Water Dump 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 “Cleaning Procedure” on Page 3-5.

Follow the procedure below to remove the dump valve.

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

2. Lift and slide the coil retainer cap fro m the 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.

Figure 3-7. Dump Valve Removal

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 th e plun ger spri ng stop.

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.

Figure 3-8. Dump Valve Disassembly

Warning

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

Important

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

CAP

PLUNGER SPRING STOP

SPRING

PLUNGER

DIAPHRAM

VALVE BODY

ENCLOSING

TUBE

COIL

Section 3 Maintenance

Part No. 80-1100-3 3-11

Water Pump

1. Disconnect the water pump power cord.

Figure 3-9. Water Pump Removal

2. Disconnect the hose from the pump outlet.

3. Loosen the screws securing the pump mounting bracket to the bulkhead.

4. Lift the pump and bracket assembly off the screws.

Ice Thickness Probe

1. Compress the side of the ice thickness probe near the top hinge pin and remove it from the bracket.

Figure 3-10. Ice Thickness Probe Removal

NOTE: At this point, the ice thickness probe can easily be cleaned. If complete removal is desired, continue with step 2 below.

2. Disconnect the wire lead from the control board inside the electrical control box.

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.

Warning

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

SV1618

POWER CORD

WATER PUMP

LOOSEN SCREWS

PUMP OUTLET

Warning

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

SV1619

DISCONNECT WIRE LEAD

COMPRESS HINGE PIN TO REMOVE

ICE THICKNESS PROBE

Maintenance Section 3

3-12 Part No. 80-1100-3

Water Level Probe

1. Loosen the screw that holds the water level probe in place. The probe can easily be cleaned at this point without proceeding to step 2.

2. If complete removal is required, disconnect the wire lead from the control board inside the electrical control box.

Figure 3-11. Water Level Probe Removal

Water Inlet Valve

The water inlet valve normally does not require removal for cleaning. Follow the instructions below to determine if removal is necessary.

1. Set the ICE/OFF/CLEAN switch to OFF. Locate the water inlet valve (in the compressor area of the ice machine). It pours water into the water trough.

2. When the ice machine is off, the water inlet valve must completely stop water flow into the machine. Watch for water flow. If water flows, remove, disassemble and clean the valve.

3. 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, remove, disassemble, and clean the valve.

Follow the procedure below to remove the water inlet valve.

1. Remove the valve shield if necessary.

2. Remove the filter access screws that hold the valve in place.

NOTE: The water inlet valve can be disassembled and cleaned without disconnecting the incoming water supply line to the ice machine.

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

4. If necessary, remove the enclosure tube access screws to clean interior components.

Figure 3-12. Water Inlet Valve Removal

Figure 3-13. Exploded View of Water Inlet Valve

Warning

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

SCREW

WATER LEVEL PROBE

SV1621

WATER TROUGH

WIRE LEAD

ICE MACHINE SIDE PANEL

Warning

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

SV1622

FILTER ACCESS SCREWS

INCOMING WATER LINE

WATER INLET VALVE

SV1623

ENCLOSURE TUBE ACCESS SCREWS

ELECTRICAL SOLENOID

RESTRICTOR (FLAT SIDE MUST FACE OUT)

MOUNTING PLATE

FILTER ACCESS SCREWS

FITTING

O-RING

ENCLOSURE TUBE

SPRING

RUBBER SEAL

VALVE BODY

FILTER SCREEN

Section 3 Maintenance

Part No. 80-1100-3 3-13

Water Distribution Tube

1. Disconnect the water hose from the distribution tube.

Figure 3-14. Water Distribution Tube Removal

1. Loosen the two thumbscrews which secure the distribution tube.

2. Lift the right side of the distribution tube up off the locating pin, then slide it back and to the right.

3. Disassemble for cleaning.

A. Twist both of the inner tube ends until the tabs

line up with the keyways.

B. Pull the inner tube ends outward.

Figure 3-15. Water Distribution Tube Disassembly

Water Curtain

1. Gently flex the curtain in the center and remove it from the right side.

Figure 3-16. Water Curtain Removal

2. Slide the left pin out.

Caution

Do not force this removal. Be sure the locating pin is clear of the hole before sliding the distribution tube out.

SV1620

1. LIFT UP

2. SLIDE BACK

3. SLIDE TO RIGHT

DISTRIBUTION TUBE

THUMBSCREW

LOCATING PIN

SV1211

INNER TUBE

TAB

KEYWAY

INNER TUBE

SV1213

STEP 1

STEP 2

Maintenance Section 3

3-14 Part No. 80-1100-3

Water Treatment/Filtration

GENERAL

Local water conditions may require the installation of a water treatment system to inhibit scale formation, filter out sediment, and remove chlorine taste and odor. Consult your local distributor for information on Manitowoc’s full line of NSF



-certified Tri-Liminator

filtration systems.

FILTER REPLACEMENT PROCEDURE

Tri-Liminator



systems include a pre-filter and a primary filter. For maximum filtration efficiency, replace the primary filter cartridge every six months. If the filter gauge reading drops below 20 psig prior to six months usage, replace the pre-filter first.

1. Turn off the water supply at the inlet shutoff valve.

Figure 3-17. Typical Tri-Liminator



Water Filtration System

2. Depress the pressure release button to relieve the pressure.

3. Unscrew the housing from the cap.

4. Remove the used filter cartridge from the housing and discard it.

5. Remove the O-ring from the housing groove. Wipe the housing groove and the O-ring clean.

6. Lubricate the O-ring with petroleum jelly.

7. Press the O-ring into the housing groove.

8. Insert a new filter cartridge into the housing. Make sure it slips down over the housing standpipe.

9. Screw the housing on to the cap and carefully handtighten it.

10. Repeat steps 3-9 for each filter housing.

11. Turn on the water supply to allow the housing and filter to slowly fill with water.

12. Depress the pressure release button to release trapped air from the housing.

13. Check for leaks.

CAP

CARTRIDGE

SEAL

PRESSURE RELEASE BUTTON

PRE-FILTER

PRIMARY FILTER

OUTLET SIDE

O-RING

SHUT OFF VALVE

SEAL

HOUSING

INLET SIDE

Caution

Hand-tighten only. Do not overtighten. Do not use a spanner wrench.

Section 3 Maintenance

Part No. 80-1100-3 3-15

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.

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.

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.

WATER-COOLED ICE MACHINES

1. Perform steps 1-6 under “Self-Contained Air-Cooled 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.

Figure 3-18. 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 service valves. Hang a tag on the switch as a reminder to open the valves before restarting.

3. Perform steps 1-6 under “Self-Contained Air-Cooled Ice Machines.”

AUCS



Accessory

Refer to the AuCS



Accessory manual for winterization

of the AuCS



Accessory.

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.

SV1624

Maintenance Section 3

3-16 Part No. 80-1100-3

THIS PAGE INTENTIONALLY LEFT BLANK

Part No. 80-1100-3 4-1

Section 4

Ice Machine Sequence of Operation

Self-Contained Air- and Water-Cooled Q200/Q280/Q320/Q370/Q420/Q450/Q600/Q800/Q1000/Q1300/Q1600/Q1800

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.

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. It remains on until the water level sensor closes for 3 continuous seconds, or until a six-minute time period has expired. (See “Water Inlet Valve Safety Shutoff,” Page 6-50.) The harvest valve(s) remains on for 5 seconds during initial compressor start-up and then shuts of f.

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 prior to water flow, to prechill the evaporator.

4. Freeze

The water pump restarts after the 30 second 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 7 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.

Figure 4-1. Freeze Sequence

(Typical Q450 Shown)

Continued on next page …

Ice Machine Sequence of Operation Section 4

4-2 Part No. 80-1100-3

HARVEST SEQUENCE

5. Water Purge

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. 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.

After the 45 second water purge, the water fill valve, water pump and dump valve de-energize. (Refer to “Water Purge Adjustment” on Page 3-3 for details.) The harvest valve also opens at the beginning of the water purge to divert hot refrigerant gas into the evaporator.

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 reclosing of the bin switch terminates the harvest sequence and returns the ice machine to the freeze sequence (Step 3 - 4.)

Figure 4-2. Harvest Sequence (Typical Q450 Shown)

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 7 seconds, the ice machine shuts off. 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 (steps 1 - 2) , pr ovide d the 3 minute delay period is complete.

Figure 4-3. Automatic Shut-Off (Typical Q450

Shown)

Section 4 Ice Machine Sequence of Operation

Part No. 80-1100-3 4-3

Remote Q450/Q600/Q800/Q1000/Q1300/Q1600/Q1800

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

1. Water Purge

The harvest valve and harvest pressure regulating (HPR) solenoid valves also energize during water purge, although they stay on for an additional 5 seconds (50 seconds total on time) during the initial refrigeration system start-up.

2. Refrigeration System Start-Up

The compressor and liquid line solenoid valve energize after the 45 second water purge and remain on throughout the entire Freeze and Harvest Sequences. 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, or until a six-minute time period has expired. (See “Water Inlet Valve Safety Shutoff,” Page 6-50.). The harvest valve and HPR solenoid valves remain on for 5 seconds during initial compressor start-up and then shut off.

The remote condenser fan motor starts at the same time the compressor starts and remains on throughout the entire Freeze and Harvest Sequences. (The compressor and condenser fan motor are wired through the contactor, therefore, anytime the contactor coil is energized, the compressor and fan motor are on.)

FREEZE SEQUENCE

3. Prechill

The compressor is on for 30 seconds prior to water flow, to prechill the evaporator.

4. Freeze

Figure 4-4. Freeze Sequence (Typical Q450 Shown)

Continued on next page …

Ice Machine Sequence of Operation Section 4

4-4 Part No. 80-1100-3

HARVEST SEQUENCE

5. Water Purge

After the 45 second water purge, the water fill valve, water pump and dump valve de-energize. (Refer to “Water Purge Adjustment” on Page 3-3 for details.) The harvest valve(s) and HPR solenoid valve also open at the beginning of the water purge.

6. Harvest

The HPR valve and the harvest valve(s) remain 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-closing of the bin switch terminates the harvest sequence and returns the ice machine to the freeze sequence (Step 3 - 4.)

Figure 4-5. Harvest Sequence (Typical Q450 Shown)

AUTOMATIC SHUT-OFF

7. Automatic Shut-Off

The ice machine remains off until enough ice has been removed from the storage bin to allow the ice to drop clear of the water curtain. As the water curtai n swings back to the operating position, the bin switch re-closes and the ice machine restarts (step s 1 - 2) p rovided th e 3 minute delay period is complete.

Figure 4-6. Automatic Shut-Off (Typical Q450

Shown)

Part No. 80-1100-3 5-1

Section 5

Water System Ice Making Sequence of Operation

NOTE: The sequence of operation is the same for selfcontained and remote models.

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

1. Before the ice machine starts, the water pump and water dump solenoid are energized for 45 seconds to purge old water from the water trough. This ensures that the ice-making cycle starts with fresh water. The water fill valve energizes after the 45second water purge, and remains on until the water level probe is satisfied.

FREEZE CYCLE

2. To pre-chill the evaporator, there is no water flow over the evaporator for the first 30 seconds of the freeze cycle.

3. The water pump starts after the 30-second pre-chill. An even flow of water is directed across the evaporator and into each cube cell.

During the first 45 seconds of the Freeze Cycle, the water fill valve cycles on and off as many times as needed to refill the water trough.

After the 45 seconds, the water fill valve cycles on and off one more time to refill the water trough. The water fill valve then remains off for the duration of the Freeze Cycle.

WATER INLET VALVE SAFETY SHUT-OFF

This feature limits the water inlet valve to a six-minute on time. Regardless of the water level probe input, the control board automatically shuts off th e water inlet valve if it remains on for 6 continuous minutes.

Figure 5-1. Water Flow Over the Evaporator

SV1677

TO DRAIN

WATER DUMP VALVE

TO DISTRIBUTION TUBE

WATER PUMP

WATER INLET VALVE

Water System Ice Making Sequence of Operation Section 5

5-2 Part No. 80-1100-3

HARVEST CYCLE

4. The water pump and water dump solenoid are energized for 45 seconds to purge the water from the water trough. The water fill valve energizes for the last 15 seconds of the 45-second purge cycle, to flush sediment from the bottom of the water trough.

5. After the 45-second purge, the water pump and water dump valve de-energize.

AUTOMATIC SHUT-OFF

There is no water flow during an automatic shut-off.

Figure 5-2. Water Flow Down the Drain

SV1677

TO DRAIN

WATER DUMP VALVE

TO DISTRIBUTION TUBE

WATER PUMP

WATER INLET VALVE

Part No. 80-1100-3 6-1

Section 6

Electrical System

Energized Parts Charts

SELF-CONTAINED AIR- AND WATER-COOLED MODELS

1. Initial Start-Up or Start-Up After Automatic Shut-Off

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 15, 30 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 recloses prior to 3 minutes.

Safety Timers

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

FREEZE SEQUENCE

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

HARVEST SEQUENCE 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).

Ice Making

Sequence Of

Operation

Control Board Relays Contactor

Length

Of Time

1 2 3 4 5 5A 5B

Water Pump

Water Fill

Valve

Harvest

Valve(s)

Water Dump Valve

Contactor

Coil

Com-

pressor

Condenser

Fan Motor

START-UP 1

1. Water Purge

On Off On On Off Off Off 45 Seconds

2. Refrigeration System

Start-Up

Off On On Off On On

May Cycle

On/Off

5 Seconds

FREEZE

SEQUENCE

3. Pre-Chill

Off

May cycle On/ Off during first

45 sec.

-----------

Cycles On,

then Off 1 more time

Locked Out

After Six

Minutes

Off Off On On

May Cycle

On/Off

30 Seconds

4. Freeze On Off Off On On

May Cycle

On/Off

Until 7 sec.

water contact

with ice

thickness probe

HARVEST

SEQUENCE

5. Water Purge

30 sec. Off,

15 sec. On

On On On On

May Cycle

On/Off

Factory-set at

45 Seconds

6. Harvest Off Off On Off On On

May Cycle

On/Off

Bin switch

activation

7. AUTOMATIC SHUT-OFF

Off Off Off Off Off Off Off

Until bin switch

re-closes

Electrical System Section 6

6-2 Part No. 80-1100-3

REMOTE MODELS

1. Initial Start-Up or Start-Up After Automatic Shut-Off

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 recloses prior to 3 minutes.

Harvest Water Purge

The circuit board has an adjustable water purge in the harvest cycle. This permits a 15, 30 or 45 second purge cycle.

Safety Timers

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

FREEZE SEQUENCE

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

HARVEST SEQUENCE

• 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).

Ice Making

Sequence Of

Operation

Control Board Relays Contactor

Length

Of Time

1 2 3 4 5 5A 5B

Water Pump

Water Fill

Valve

a. Harvest

Valve(s)

Water Dump

Valve

Contactor

Coil

Com-

pressor

Condenser

Fan Motor

b. HPR

Solenoid

b. Liquid

Line

Solenoid

START-UP

1. Water Purge

On Off On On

Off Off Off 45 Seconds

2. Refrigeration System

Start-Up

Off On On Off On On On 5 Seconds

FREEZE

SEQUENCE

3. Pre-Chill

Off

May cycle

On/Off during

first 45 sec.

------------

Cycles On,

then Off 1 more time

Locked Out

After Six

Minutes

Off Off On On On 30 Seconds

4. Freeze On Off Off On On On

Until 7 sec.

water

contact with

ice thickness

probe

HARVEST

SEQUENCE

5. Water Purge

30 sec. Off,

15 sec. On

On On On On On

Factory-set

at 45

Seconds

6. Harvest Off Off On Off On On On

Bin switch

activation

7. AUTOMATIC

SHUT-OFF

Off Off Off Off Off Off Off

Until bin

switch re-

closes

Section 6 Electrical System

Part No. 80-1100-3 6-3

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, it stays on for an additional 5 seconds (50 seconds total).

Figure 6-1. 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 Closed / ON #2 Water Fill Valve Open / OFF #3 Harvest Solenoid Closed / ON #4 Water Dump Valve Closed / ON #5 Contactor Coil Open / OFF

Compressor OFF Condenser Fan Motor OFF

Safety Controls (Which could stop ice machine operation)

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

*OVERLOAD

FAN CYCLE CONTROL

BIN SWITCH

TB35

TB33

(52)

(51)

(48)

CONTACTOR CONTACTS

(42)

(66)

(64)

ICE THICKNESS PROBE

WATER LEVEL PROBE

NOT USED

B35

HIGH PRES CUTOUT

TB32

(55)

RUN CAPACITOR

RUN CAPACITOR**

TB34

(53)

(47)

(85) (86)

COMPRESSOR

FAN MOTOR (AIR COOLED ONLY)

(45)

(46) (50)

PTCR

BIN SWITCH LIGHT HARVEST LIGHT/

SAFETY LIMIT CODE LIGHT

CLEAN LIGHT WATER LEVEL

(49)

(63)

(62)

(66)

(65)

(69)

ICE OFF

CLEAN

(67)

(68)

LOW D.C.

VOLTAGE

PLUG

(62)

TOGGLE SWITCH

68 67

66 62

VIEW FOR WIRING

INTERNAL WORKING VIEW

TB37

(74)

(59)

(73)

(56)

CONTACTOR COIL

TERMINATES AT PIN CONNECTION

TB3

TB30

L2 (N)

SEE SERIAL PLATE FOR VOLTAGE

(58)

FUSE (7A)

TRANS.

2 4

1 3 5

(61)

(60)

TB31

(76)

(98)

(57)

(99)

(75)

HARVEST SOLENOID

DUMP SOLENOID

(81)

WATER PUMP

(77)

(80)

(21)

(22)

WATER VALVE

TB30

(20)

SV1646-1

Electrical System Section 6

6-4 Part No. 80-1100-3

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. It remains on until the water level sensor closes for 3 continuous seconds.

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

At the same time the compressor starts, the condenser fan motor (aircooled models) is supplied with power. It continues to be supplied with power throughout the Freeze and Harvest cycles.

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, these components are supplied with power.)

Figure 6-2. 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 Open / OFF #2 Water Fill Valve Closed / ON #3 Harvest Solenoid Closed / ON #4 Water Dump Valve Open / OFF #5 Contactor Coil Closed / ON

Compressor ON Condenser Fan Motor ON

Safety Controls (Which could stop ice machine operation)

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

*OVERLOAD

FAN CYCLE CONTROL

BIN SWITCH

TB35

TB33

(52)

(51)

(48)

CONTACTOR CONTACTS

(42)

(66)

(64)

ICE THICKNESS PROBE

WATER LEVEL PROBE

NOT USED

B35

HIGH PRES CUTOUT

TB32

(55)

RUN CAPACITOR

RUN CAPACITOR**

TB34

(53)

(47)

(85) (86)

COMPRESSOR

FAN MOTOR (AIR COOLED ONLY)

(45)

(46) (50)

PTCR

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

CLEAN LIGHT WATER LEVEL

(49)

(63)

(62)

(66)

(65)

(69)

ICE OFF

CLEAN

(67)

(68)

LOW D.C.

VOLTAGE

PLUG

(62)

TOGGLE SWITCH

66 62

VIEW FOR WIRING

INTERNAL WORKING VIEW

TB37

(74)

(59)

(73)

(56)

CONTACTOR COIL

TERMINATES AT PIN CONNECTION

TB3

TB30

L2 (N)

SEE SERIAL PLATE FOR VOLTAGE

(58)

FUSE (7A)

TRANS.

2 4

1 3 5

(61)

(60)

TB31

(76)

(98)

(57)

(99)

(75)

SOLENOID

DUMP SOLENOID

(81)

WATER PUMP

(77)

(80)

HARVEST

(21)

(22)

WATER VALVE

TB30

(20)

SV1646-2

Section 6 Electrical System

Part No. 80-1100-3 6-5

Freeze Sequence

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

compressor runs for 30 seconds prior to water flow.

The water fill valve remains on until the water level sensor closes for three continuous seconds.

Figure 6-3. Self-Contained — Pre-Chill

Table 6-3. Self-Contained Models

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

#1 Water Pump Open / OFF #2 Water Fill Valve Closed / ON #3 Harvest Solenoid Open / OFF #4 Water Dump Valve Open / OFF #5 Contactor Coil Closed / ON

Compressor ON Condenser Fan Motor ON

Safety Controls (Which could stop ice machine operation)

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

*OVERLOAD

FAN CYCLE CONTROL

BIN SWITCH

TB35

TB33

(52)

(51)

(48)

CONTACTOR CONTACTS

(42)

(66)

(64)

ICE THICKNESS PROBE

WATER LEVEL PROBE

NOT USED

B35

HIGH PRES CUTOUT

TB32

(55)

RUN CAPACITOR

RUN CAPACITOR**

TB34

(53)

(47)

(85) (86)

COMPRESSOR

FAN MOTOR (AIR COOLED ONLY)

(45)

(46) (50)

PTCR

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

CLEAN LIGHT WATER LEVEL

(49)

(63)

(62)

(66)

(65)

(69)

ICE OFF

CLEAN

(67)

(68)

LOW D.C.

VOLTAGE

PLUG

(62)

TOGGLE SWITCH

66 62

VIEW FOR WIRING

INTERNAL WORKING VIEW

TB37

(74)

(59)

(73)

(56)

CONTACTOR COIL

TERMINATES AT PIN CONNECTION

TB3

TB30

L2 (N)

SEE SERIAL PLATE FOR VOLTAGE

(58)

FUSE (7A)

TRANS.

2 4

1 3

(61)

(60)

TB31

(76)

(98)

(57)

(99)

(75)

HARVEST SOLENOID

DUMP SOLENOID

(81)

WATER PUMP

(77)

(80)

(21)

(22)

WATER VALVE

TB30

(20)

SV1646-3

Electrical System Section 6

6-6 Part No. 80-1100-3

4. FREEZE The water pump starts after the 30-

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

After six minutes the water inlet valve is locked out and can not add additional water.

When sufficient ice has formed, the water flow (not the ice) contacts the ice thickness probes. After approximately 7 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.

Figure 6-4.

Self-Contained — Freeze

Table 6-4. Self-Contained Models

4. Freeze (Until 7 Seconds of Water Contact with Ice Thickness Probe) Toggle Switch ICE Bin Switch Closed Control Board Relays

#1 Water Pump Closed / ON #2 Water Fill Valve Cycles ON then OFF #3 Harvest Solenoid Open / OFF #4 Water Dump Valve Open / OFF #5 Contactor Coil Closed / ON

Compressor ON Condenser Fan Motor ON

Safety Controls (Which could stop ice machine operation)

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

*OVERLOAD

FAN CYCLE CONTROL

BIN SWITCH

TB35

TB33

(52)

(51)

(48)

CONTACTOR CONTACTS

(42)

(66)

(64)

ICE THICKNESS PROBE

WATER LEVEL PROBE

NOT USED

B35

HIGH PRES CUTOUT

TB32

(55)

RUN CAPACITOR

RUN CAPACITOR**

TB34

(53)

(47)

(85) (86)

COMPRESSOR

FAN MOTOR (AIR COOLED ONLY)

(45)

(46) (50)

PTCR

BIN SWITCH LIGHT HARVEST LIGHT/

SAFETY LIMIT CODE LIGHT

CLEAN LIGHT WATER LEVEL

(49)

(63)

(62)

(66)

(65)

(69)

ICE OFF

CLEAN

(67)

(68)

LOW D.C.

VOLTAGE

PLUG

(62)

TOGGLE SWITCH

68 67

66 62

VIEW FOR WIRING

INTERNAL WORKING VIEW

TB37

(74)

(59)

(73)

(56)

CONTACTOR COIL

TERMINATES AT PIN CONNECTION

TB3

TB30

L2 (N)

SEE SERIAL PLATE FOR VOLTAGE

(58)

FUSE (7A)

TRANS.

2 4

1 3 5

(61)

(60)

TB31

(76)

(98)

(57)

(99)

(75)

HARVEST SOLENOID

DUMP SOLENOID

(81)

WATER PUMP

(77)

(80)

(21)

(22)

WATER VALVE

TB30

(20)

SV1646-4

Section 6 Electrical System

Part No. 80-1100-3 6-7

Harvest Sequence

5. WATER PURGE 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.

Figure 6-5.

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 Closed / ON #2 Water Fill Valve Cycles OFF then ON #3 Harvest Solenoid Closed / ON #4 Water Dump Valve Closed / ON #5 Contactor Coil Closed / ON

Compressor ON Condenser Fan Motor ON

Safety Controls (Which could stop ice machine operation)

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

*OVERLOAD

FAN CYCLE CONTROL

BIN SWITCH

TB35

TB33

(52)

(51)

(48)

CONTACTOR CONTACTS

(42)

(66)

(64)

ICE THICKNESS PROBE

WATER LEVEL PROBE

NOT USED

B35

HIGH PRES CUTOUT

TB32

(55)

RUN CAPACITOR

RUN CAPACITOR**

TB34

(53)

(47)

(85) (86)

COMPRESSOR

FAN MOTOR (AIR COOLED ONLY)

(45)

(46) (50)

PTCR

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

CLEAN LIGHT WATER LEVEL

(49)

(63)

(62)

(66)

(65)

(69)

ICE OFF

CLEAN

(67)

(68)

LOW D.C.

VOLTAGE

PLUG

(62)

TOGGLE SWITCH

68 67

VIEW FOR WIRING

INTERNAL WORKING VIEW

TB37

(74)

(59)

(73)

(56)

CONTACTOR COIL

TERMINATES AT PIN CONNECTION

TB3

TB30

L2 (N)

SEE SERIAL PLATE FOR VOLTAGE

(58)

FUSE (7A)

TRANS.

2 4

1 3 5

(61)

(60)

TB31

(76)

(98)

(57)

(99)

(75)

HARVEST SOLENOID

DUMP SOLENOID

(81)

WATER PUMP

(77)

(80)

(21)

WATER VALVE

(22)

TB30

(20)

SV1646-5

Electrical System Section 6

6-8 Part No. 80-1100-3

6. HARVEST The harvest valve(s) remains open,

allowing refrigerant gas to warm the evaporator. This ca uses 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).

Figure 6-6. Self-Contained — Harvest

Table 6-6. Self-Contained Models

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

#1 Water Pump Open / OFF #2 Water Fill Valve Open / OFF #3 Harvest Solenoid Closed / ON #4 Water Dump Valve Open / OFF #5 Contactor Coil Closed / ON

Compressor ON Condenser Fan Motor ON

Safety Controls (Which could stop ice machine operation)

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

*OVERLOAD

FAN CYCLE CONTROL

BIN SWITCH

TB35

TB33

(52)

(51)

(48)

CONTACTOR CONTACTS

(42)

(66)

(64)

ICE THICKNESS PROBE

WATER LEVEL PROBE

NOT USED

B35

HIGH PRES CUTOUT

TB32

(55)

RUN CAPACITOR

RUN CAPACITOR**

TB34

(53)

(47)

(85) (86)

COMPRESSOR

FAN MOTOR (AIR COOLED ONLY)

(45)

(46) (50)

PTCR

BIN SWITCH LIGHT HARVEST LIGHT/

SAFETY LIMIT CODE LIGHT

CLEAN LIGHT WATER LEVEL

(49)

(63)

(62)

(66)

(65)

(69)

ICE OFF

CLEAN

(67)

(68)

LOW D.C.

VOLTAGE

PLUG

(62)

TOGGLE SWITCH

68 67

66 62

VIEW FOR WIRING

INTERNAL WORKING VIEW

TB37

(74)

(59)

(73)

(56)

CONTACTOR COIL

TERMINATES AT PIN CONNECTION

TB3

TB30

L2 (N)

SEE SERIAL PLATE FOR VOLTAGE

(58)

FUSE (7A)

TRANS.

2 4

1 3 5

(61)

(60)

TB31

(76)

(98)

(57)

(99)

(75)

HARVEST SOLENOID

DUMP SOLENOID

(81)

WATER PUMP

(77)

(80)

(21)

(22)

WATER VALVE

TB30

(20)

SV1646-6

Section 6 Electrical System

Part No. 80-1100-3 6-9

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 7 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).

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

Figure 6-7. 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 Water Pump Open / OFF #2 Water Fill Valve Open / OFF #3 Harvest Solenoid Open / OFF #4 Water Dump Valve Open / OFF #5 Contactor Coil Open / OFF

Compressor OFF Condenser Fan Motor OFF

Safety Controls (Which could stop ice machine operation)

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

*OVERLOAD

FAN CYCLE CONTROL

BIN SWITCH

TB35

TB33

(52)

(48)

CONTACTOR CONTACTS

(42)

(51)

(64)

(66)

ICE THICKNESS PROBE

WATER LEVEL PROBE

NOT USED

B35

HIGH PRES CUTOUT

TB32

(55)

TB3

RUN CAPACITOR

RUN CAPACITOR**

TB34

(47)

(86)

COMPRESSOR

(53)

(85)

FAN MOTOR (AIR COOLED ONLY)

(45)

(46) (50)

PTCR

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

CLEAN LIGHT WATER LEVEL

(49)

(63)

(62)

(66)

(65)

(69)

(67)

ICE OFF

CLEAN

(68)

LOW D.C.

VOLTAGE

PLUG

(62)

TOGGLE SWITCH

68 67

VIEW FOR WIRING

INTERNAL WORKING VIEW

TB37

(74)

(59)

(73)

(56)

CONTACTOR COIL

TERMINATES AT PIN CONNECTION

TB3

TB30

L2 (N)

SEE SERIAL PLATE FOR VOLTAGE

(58)

4 1 3 5

FUSE (7A)

TRANS.

(61)

(60)

TB31

(76)

(98)

(57)

(99)

(75)

HARVEST SOLENOID

DUMP SOLENOID

(81)

WATER PUMP

(77)

(80)

(21)

(22)

WATER VALVE

TB30

(20)

SV1646-7

Electrical System Section 6

6-10 Part No. 80-1100-3

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, they stay on for an additional 5 seconds (50 seconds total).

Figure 6-8. 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 Closed / ON #2 Water Fill Valve Open / OFF #3 Harvest Solenoid Closed / ON

Harvest Pressure Regulating (HPR) Solenoid Closed / ON #4 Water Dump Valve Closed / ON #5 Contactor Coil Open / OFF

Liquid Line Solenoid De-energized

Compressor OFF

Condenser Fan Motor OFF Safety Controls (Which could stop ice machine operation)

High Pressure Cut-Out Closed

Main Fuse (On Control Board) Closed

TERMINATES AT

PIN CONNECTION

*OVERLOAD

BIN SWITCH

ICE THICKNESS PROBE

(F1)

TB33

(52)

(51)

(48)

B35

(42)

CONTACTOR CONTACTS

(66)

WATER LEVEL PROBE

NOT USED

(64)

TB32

B35

(55)

HIGH PRES CUTOUT

(74)

(73)

REMOTE

FAN MOTOR

RUN CAPACITOR

PTCR

TB34

(53)

REMOTE CONDENSER

(F2)

(45)

TB3

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

RUN CAPACITOR

TOGGLE SWITCH

INTERNAL WORKING VIEW

CLEAN LIGHT

WATER LEVEL

ICE

(68)

(46)

(49)

(47)

COMPRESSOR

(62)

(66)

(69)

(67)

OFF

CLEAN

LOW D.C. VOLTAGE PLUG

(63)

(65)

(62)

(50)

TB3

66 62

(56)

TB3

CONTACTOR COIL

VIEW FOR WIRING

(57)

(58)

1 3

FUSE (7A)

TRANS.

(61) (60)

HARVEST

(80)

TB31

TB37

(76)

(98)

(59)

(99)

SOLENOID

DUMP SOLENOID

WATER PUMP

SOLENOID

TB3

(82)

(83)

(81)

(75)

LIQUID LINE

(77)

HPR SOLENOID

(79)(78)

L2 (N)

SEE SERIAL PLATE FOR VOLTAGE

(22)(21) WATER

VALVE

(20)

SV1648-1

Section 6 Electrical System

Part No. 80-1100-3 6-11

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.)

Figure 6-9. Remote — Refrigeration System Start-Up

Table 6-9. Remote Models

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

#1 Water Pump Open / OFF #2 Water Fill Valve Closed / ON #3 Harvest Solenoid Closed / ON

Harvest Pressure Regulating (HPR) Solenoid Closed / ON #4 Water Dump Valve Open / OFF #5 Contactor Coil Closed / ON

Liquid Line Solenoid Energized

Compressor ON

Condenser Fan Motor ON Safety Controls (Which could stop ice machine operation)

High Pressure Cut-Out Closed

Main Fuse (On Control Board) Closed

TERMINATES AT

PIN CONNECTION

*OVERLOAD

BIN SWITCH

ICE THICKNESS PROBE

(F1)

TB33

(52)

(51)

(48)

B35

(42)

CONTACTOR CONTACTS

(66)

WATER LEVEL PROBE

NOT USED

(64)

TB32

B35

(55)

HIGH PRES CUTOUT

(74)

(73)

REMOTE

FAN MOTOR

RUN CAPACITOR

PTCR

TB34

(53)

REMOTE CONDENSER

(F2)

(45)

TB3

BIN SWITCH LIGHT HARVEST LIGHT/

SAFETY LIMIT CODE LIGHT

RUN CAPACITOR

TOGGLE SWITCH

INTERNAL WORKING VIEW

CLEAN LIGHT

WATER LEVEL

(68)

ICE

(46)

(49)

(47)

COMPRESSOR

(62)

(66)

(69)

(67)

OFF

CLEAN

LOW D.C. VOLTAGE PLUG

(63)

(65)

(62)

(50)

TB3

68 67

66 62

(56)

COIL

VIEW FOR WIRING

TB3

CONTACTOR

TB3

(57)

(58)

1 3

FUSE (7A)

TRANS.

(61) (60)

HARVEST

(80)

TB31

TB37

(76)

(98)

(59)

(99)

SOLENOID

WATER PUMP

SOLENOID

TB3

LIQUID LINE

(81)

(82)

(75)

DUMP

(83)

HPR SOLENOID

L2 (N)

SEE SERIAL PLATE FOR VOLTAGE

(22)(21)

WATER VALVE

(77)

(79)(78)

(20)

SV1648-2

Electrical System Section 6

6-12 Part No. 80-1100-3

Freeze Sequence

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

compressor runs for 30 seconds prior to water flow.

NOTE: The water fill valve remains on until the water level sensor closes for three continuous seconds.

Figure 6-10. Remote — Pre-Chill

Table 6-10. Remote Models

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

#1 Water Pump Open / OFF #2 Water Fill Valve Closed / ON #3 Harvest Solenoid Open / OFF

Harvest Pressure Regulating (HPR) Solenoid Open / OFF #4 Water Dump Valve Open / OFF #5 Contactor Coil Closed / ON

Liquid Line Solenoid Energized

Compressor ON

Condenser Fan Motor ON Safety Controls (Which could stop ice machine operation)

High Pressure Cut-Out Closed

Main Fuse (On Control Board) Closed

TERMINATES AT

PIN CONNECTION

*OVERLOAD

BIN SWITCH

ICE THICKNESS PROBE

(F1)

TB33

(52)

(51)

(48)

B35

(42)

CONTACTOR CONTACTS

(66)

WATER LEVEL PROBE

NOT USED

(64)

TB32

B35

(55)

HIGH PRES CUTOUT

(74)

(73)

REMOTE

FAN MOTOR

RUN CAPACITOR

PTCR

TB34

(53)

REMOTE CONDENSER

(F2)

(45)

TB3

BIN SWITCH LIGHT HARVEST LIGHT/

SAFETY LIMIT CODE LIGHT

RUN CAPACITOR

TOGGLE SWITCH

INTERNAL WORKING VIEW

CLEAN LIGHT

WATER LEVEL

(68)

ICE

(46)

(49)

(47)

COMPRESSOR

(62)

(66)

(69)

(67)

OFF

CLEAN

LOW D.C. VOLTAGE PLUG

(63)

(65)

(62)

(50)

TB3

66 62

(56)

COIL

VIEW FOR WIRING

TB3

CONTACTOR

TB3

(57)

(58)

1 3

FUSE (7A)

TRANS.

(61) (60)

HARVEST

(80)

TB31

TB37

(76)

(98)

(99)

(75)

SOLENOID

DUMP SOLENOID

(81)

WATER PUMP

SOLENOID

TB3

(82)

(59)

(83)

LIQUID LINE

HPR SOLENOID

L2 (N)

SEE SERIAL PLATE FOR VOLTAGE

(22)(21) WATER

VALVE

(77)

(79)(78)

(20)

SV1648-3

Section 6 Electrical System

Part No. 80-1100-3 6-13

4. FREEZE The water pump starts after the 30-

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

After six minutes the water inlet valve is locked out and can not add additional water.

When sufficient ice has formed, the water flow (not the ice) contacts the ice thickness probes. After approximately 7 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.

Figure 6-11. Remote — Freeze

Table 6-11. Remote Models

4. Freeze (Until 7 Seconds of Water Contact with Ice Thickness Probe) Toggle Switch ICE Bin Switch Closed Control Board Relays

#1 Water Pump Closed / ON #2 Water Fill Valve Cycles / ON then OFF #3 Harvest Solenoid Open / OFF

Harvest Pressure Regulating (HPR) Solenoid Open / OFF #4 Water Dump Valve Open / OFF #5 Contactor Coil Closed / ON

Liquid Line Solenoid Energized

Compressor ON

Condenser Fan Motor ON Safety Controls (Which could stop ice machine operation)

High Pressure Cut-Out Closed

Main Fuse (On Control Board) Closed

TERMINATES AT

PIN CONNECTION

*OVERLOAD

BIN SWITCH

ICE THICKNESS PROBE

(F1)

TB33

(52)

(51)

(48)

B35

(42)

CONTACTOR CONTACTS

(66)

(64)

WATER LEVEL PROBE

NOT USED

TB32

B35

(55)

HIGH PRES CUTOUT

(74)

(73)

REMOTE

FAN MOTOR

RUN CAPACITOR

PTCR

TB34

(53)

REMOTE CONDENSER

(F2)

(45)

TB3

BIN SWITCH LIGHT HARVEST LIGHT/

SAFETY LIMIT CODE LIGHT

RUN CAPACITOR

TOGGLE SWITCH

INTERNAL WORKING VIEW

CLEAN LIGHT

WATER LEVEL

(68)

ICE

(46)

(49)

(47)

COMPRESSOR

(62)

(66)

(69)

(67)

OFF

CLEAN

LOW D.C. VOLTAGE PLUG

(63)

(65)

(62)

(50)

TB3

68 67

66 62

(56)

COIL

VIEW FOR WIRING

TB3

CONTACTOR

TB3

(57)

(58)

1 3

FUSE (7A)

TRANS.

(61) (60)

HARVEST

(80)

TB31

TB37

(76)

(98)

(59)

(99)

SOLENOID

DUMP SOLENOID

(81)

WATER PUMP

SOLENOID

TB3

(82)

(83)

LIQUID LINE

(75)

HPR SOLENOID

L2 (N)

SEE SERIAL PLATE FOR VOLTAGE

(22)(21)

WATER VALVE

(77)

(79)(78)

(20)

SV1648-4

Electrical System Section 6

6-14 Part No. 80-1100-3

Harvest Sequence

5. WATER PURGE 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” on Page 3-3 for details.) The harvest valve and HPR solenoid also open at the beginning of the water purge to divert hot refrigerant gas into the evaporator.

Figure 6-12. 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 Closed / ON #2 Water Fill Valve Cycles / OFF then ON #3 Harvest Solenoid Closed / ON

Harvest Pressure Regulating (HPR) Solenoid Closed / ON #4 Water Dump Valve Closed / ON #5 Contactor Coil Closed / ON

Liquid Line Solenoid Energized

Compressor ON

Condenser Fan Motor ON Safety Controls (Which could stop ice machine operation)

High Pressure Cut-Out Closed

Main Fuse (On Control Board) Closed

TERMINATES AT

PIN CONNECTION

*OVERLOAD

BIN SWITCH

ICE THICKNESS PROBE

(F1)

TB33

(52)

(51)

(48)

B35

(42)

CONTACTOR CONTACTS

(66)

(64)

WATER LEVEL PROBE

NOT USED

TB32

B35

(55)

HIGH PRES CUTOUT

(74)

(73)

REMOTE

FAN MOTOR

RUN CAPACITOR

PTCR

TB34

(53)

REMOTE CONDENSER

(F2)

(45)

TB3

BIN SWITCH LIGHT HARVEST LIGHT/

SAFETY LIMIT CODE LIGHT

RUN CAPACITOR

TOGGLE SWITCH

INTERNAL WORKING VIEW

CLEAN LIGHT

WATER LEVEL

(68)

ICE

(46)

(49)

(47)

COMPRESSOR

(62)

(66)

(69)

(67)

OFF

CLEAN

LOW D.C. VOLTAGE PLUG

(63)

(65)

(62)

(50)

TB3

66 62

(56)

COIL

VIEW FOR WIRING

TB3

CONTACTOR

TB3

(57)

(58)

1 3

FUSE (7A)

TRANS.

(61) (60)

HARVEST

(80)

TB31

TB37

(76)

(98)

(99)

SOLENOID

DUMP SOLENOID

(81)

WATER PUMP

SOLENOID

TB3

(82)

(83)

(59)

(75)

LIQUID LINE

HPR

L2 (N)

SEE SERIAL PLATE FOR VOLTAGE

(22)(21) WATER

VALVE

(77)

(79)(78)

SOLENOID

(20)

SV1648-5

Section 6 Electrical System

Part No. 80-1100-3 6-15

6. HARVEST The harvest valve(s) and HPR

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

Figure 6-13. 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 Open / OFF #2 Water Fill Valve Open / OFF #3 Harvest Solenoid Closed / ON

Harvest Pressure Regulating (HPR) Solenoid Closed / ON #4 Water Dump Valve Open / OFF #5 Contactor Coil Closed / ON

Liquid Line Solenoid Energized

Compressor ON

Condenser Fan Motor ON Safety Controls (Which could stop ice machine operation)

High Pressure Cut-Out Closed

Main Fuse (On Control Board) Closed

TERMINATES AT

PIN CONNECTION

*OVERLOAD

BIN SWITCH

ICE THICKNESS PROBE

(F1)

TB33

(52)

(51)

(48)

B35

(42)

CONTACTOR CONTACTS

(66)

(64)

WATER LEVEL PROBE

NOT USED

TB32

B35

(55)

HIGH PRES CUTOUT

(73)

(74)

REMOTE

FAN MOTOR

RUN CAPACITOR

PTCR

TB34

(53)

REMOTE CONDENSER

(F2)

(45)

TB3

BIN SWITCH LIGHT HARVEST LIGHT/

SAFETY LIMIT CODE LIGHT

RUN CAPACITOR

TOGGLE SWITCH

INTERNAL WORKING VIEW

CLEAN LIGHT

WATER LEVEL

(68)

ICE

(46)

(49)

(47)

COMPRESSOR

(62)

(66)

(69)

(67)

OFF

CLEAN

LOW D.C. VOLTAGE PLUG

(63)

(65)

(62)

(50)

TB3

68 67

66 62

(56)

COIL

VIEW FOR WIRING

TB3

CONTACTOR

TB3

(57)

(58)

1 3

FUSE (7A)

TRANS.

(61) (60)

HARVEST

(80)

TB31

TB37

(76)

(98)

(59)

(99)

SOLENOID

DUMP SOLENOID

WATER PUMP

SOLENOID

TB3

(82)

(83)

(81)

(75)

LIQUID LINE

HPR SOLENOID

L2 (N)

SEE SERIAL PLATE FOR VOLTAGE

(22)(21)

WATER VALVE

(77)

(79)

(78)

(20)

SV1648-6

Electrical System Section 6

6-16 Part No. 80-1100-3

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 7 seconds, the ice machine shuts off.

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

Figure 6-14. 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 Water Pump Open / OFF #2 Water Fill Valve Open / OFF #3 Harvest Solenoid Open / OFF

Harvest Pressure Regulating (HPR) Solenoid Open / OFF #4 Water Dump Valve Open / OFF #5 Contactor Coil Open / OFF

Liquid Line Solenoid De-energized

Compressor ON

Condenser Fan Motor ON Safety Controls (Which could stop ice machine operation)

High Pressure Cut-Out Closed

Main Fuse (On Control Board) Closed

TERMINATES AT

PIN CONNECTION

*OVERLOAD

BIN SWITCH

ICE THICKNESS PROBE

(F1)

TB33

(52)

(51)

(48)

B35

(42)

CONTACTOR CONTACTS

(66)

(64)

WATER LEVEL PROBE

NOT USED

TB32

B35

(55)

HIGH PRES CUTOUT

(74)

(73)

REMOTE

FAN MOTOR

RUN CAPACITOR

PTCR

TB34

(53)

REMOTE CONDENSER

(F2)

(45)

TB3

BIN SWITCH LIGHT HARVEST LIGHT/

SAFETY LIMIT CODE LIGHT

RUN CAPACITOR

TOGGLE SWITCH

INTERNAL WORKING VIEW

CLEAN LIGHT

WATER LEVEL

(68)

ICE

(46)

(49)

(47)

COMPRESSOR

(62)

(66)

(69)

(67)

OFF

CLEAN

LOW D.C. VOLTAGE PLUG

(63)

(65)

(62)

(50)

TB3

66 62

(56)

COIL

VIEW FOR WIRING

TB3

CONTACTOR

TB3

(57)

(58)

1 3

FUSE (7A)

TRANS.

(61) (60)

HARVEST

(80)

TB31

TB37

(76)

(98)

(59)

(99)

(75)

SOLENOID

DUMP SOLENOID

(81)

WATER PUMP

LIQUID LINE SOLENOID

TB3

(82)

(83)

HPR SOLENOID

L2 (N)

SEE SERIAL PLATE FOR VOLTAGE

(22)(21) WATER

VALVE

(77)

(79)(78)

(20)

SV1648-7

Section 6 Electrical System

Part No. 80-1100-3 6-17

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.

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 Number Designation

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

—>>— Multi-Pin Connection

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

Warning

Always disconnect power before working on electrical circuitry.

Electrical System Section 6

6-18 Part No. 80-1100-3

Q200/Q280/Q320 - SELF CONTAINED - 1 PHASE WITH TERMINAL BOARD

TB31

TB37

TB32

TB35

TB34

(53)

TB33

(52)

(51)

(48)

(50)

(49)

(47)

(55)

(61)

(77)

(76)

(60)

(98)

(57)

(74)

(58)

(59)

(73)

(99)

(85) (86)

2 4

FUSE (7A)

TRANS.

(56)

ICE THICKNESS PROBE

(75)

HARVEST SOLENOID

DUMP SOLENOID

(81)

(80)

WATER PUMP

TB3

CONTACTOR COIL

HIGH PRES CUTOUT

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

B35

TB3

CONTACTOR CONTACTS

(42)

COMPRESSOR

FAN CYCLE CONTROL

FAN MOTOR (AIR COOLED ONLY)

RUN CAPACITOR**

L2 (N)

SEE SERIAL PLATE FOR VOLTAGE

CAUTION: DISCONNECT POWER BEFORE WORKING

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

TERMINATES AT PIN CONNECTION

PTCR

TB3

LOW D.C. VOLTAGE PLUG

(64)

(63)

BIN SWITCH

(62)

(66)

(65)

(69)

(67)

(68)

TOGGLE SWITCH

68 67

66 62

ICE OFF

CLEAN

(66)

(62)

VIEW FOR WIRING

INTERNAL WORKING VIEW

*OVERLOAD

CLEAN LIGHT

WATER LEVEL LIGHT

WATER LEVEL PROBE

(21) (22)

WATER VALVE

NOT USED

(20)

SV1654

Section 6 Electrical System

Part No. 80-1100-3 6-19

Q280/Q370 - SELF CONTAINED - 1 PHASE WITHOUT TERMINAL BOARD

START CAPACITOR

POTENTIAL

RELAY

COMPRESSOR TERMINAL LAYOUT VIEWED FROM END

OF COMPRESSOR

CAUTION: DISCONNECT POWER BEFORE WORKING

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

SAFETY LIMIT CODE LIGHT

HARVEST LIGHT/

WATER LEVEL

CLEAN LIGHT

BIN SWITCH LIGHT

CLEAN

OFF

ICE

(68)

(69)

(62)

(49)

(47)

COMPRESSOR

OVERLOAD INTERNAL

{230V 50/60 HZ}

(86)(85)

(51)

(48)

CONTACTOR

CONTACTS

(42)

FAN CYCLE CONTROL

RUN CAPACITOR**

FAN MOTOR (AIR COOLED ONLY)

(50)

VIEW FOR WIRING

SEE SERIAL PLATE FOR VOLTAGE

L2 (N)

(74)

TERMINATES AT PIN CONNECTION

(59)

(58)

(56)

(98)

DUMP SOLENOID

(57)

(81)

(99)

(75)

(80)

(76)

HARVEST SOLENOID

(77)

WATER

VALVE

(21)

(22)

(60)

(61)

(55)

HIGH PRES CUTOUT

WATER LEVEL PROBE

NOT USED

ICE THICKNESS PROBE

LOW D.C. VOLTAGE PLUG

BIN SWITCH

(64)

(66)

(67)

(63)

(62)

CONTACTOR COIL

WATER PUMP

FUSE (7A)

TRANS.

3 1

(65)

(89)

(88)

(20)

(46)

(44)

(45)

SV3018

Electrical System Section 6

6-20 Part No. 80-1100-3

Q320 - SELF CONTAINED - 1 PHASE WITHOUT TERMINAL BOARD

*OVERLOAD

OVERLOAD

(51)

(48)

(45)

(46)

(49)

(47)

(48)

(50)

(49)

(47)

(55)

(61)

(20)

(76)

(60)

(98)

(57)

(74)

(58)

(59)

(99)

(85)

(86)

FUSE (7A)

TRANS.

(56)

ICE THICKNESS PROBE

(75)

HARVEST SOLENOID

DUMP SOLENOID

(81)

(22)

WATER PUMP

CONTACTOR COIL

HIGH PRES CUTOUT

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

LOW D.C. VOLTAGE PLUG

CONTACTOR CONTACTS

(42)

COMPRESSOR

RUN CAPACITOR

FAN CYCLE CONTROL

FAN MOTOR (AIR COOLED ONLY)

RUN CAPACITOR**

L2 (N)

SEE SERIAL PLATE FOR VOLTAGE

CAUTION: DISCONNECT POWER BEFORE WORKING

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

TERMINATES AT PIN CONNECTION

PTCR

(64)

(63)

BIN SWITCH

(62)

(66)

(65)

(69)

(67)

(68)

TOGGLE SWITCH

67 69

66 62

ICE

OFF

CLEAN

(62)

VIEW FOR WIRING

CLEAN LIGHT

WATER LEVEL

WATER LEVEL PROBE

(77)

(80)

WATER VALVE

NOT USED

(89)

(88)

(21)

SV2070

Section 6 Electrical System

Part No. 80-1100-3 6-21

Q420/Q450/Q600/Q800/Q1000 - SELF CONTAINED 1 PHASE WITH TERMINAL BOARD

TB31

TB37

TB32

B35

TB34

*OVERLOAD

(53)

TB33

(52)

(51)

(48)

(45)

(46) (50)

(49)

(47)

(55)

(61)

(21)

(76)

(60)

(98)

(57)

(74)

(58)

(59)

(73)

(99)

(85) (86)

4 1 3 5

FUSE (7A)

TRANS.

(56)

ICE THICKNESS PROBE

(75)

HARVEST SOLENOID

DUMP SOLENOID

(81)

(22)

WATER PUMP

TB30

CONTACTOR COIL

HIGH PRES CUTOUT

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

LOW D.C. VOLTAGE PLUG

TB35

TB3

CONTACTOR CONTACTS

(42)

COMPRESSOR

RUN CAPACITOR

FAN CYCLE CONTROL

FAN MOTOR (AIR COOLED ONLY)

RUN CAPACITOR**

L2 (N)

SEE SERIAL PLATE FOR VOLTAGE

CAUTION: DISCONNECT POWER BEFORE WORKING

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

TERMINATES AT PIN CONNECTION

PTCR

TB3

(64)

(63)

BIN SWITCH

(62)

(66)

(65)

(69)

(67)

(68)

TOGGLE SWITCH

66 62

ICE OFF

CLEAN

(66)

(62)

VIEW FOR WIRING

INTERNAL WORKING VIEW

CLEAN LIGHT

WATER LEVEL LIGHT

WATER LEVEL PROBE

(77)

(80)

WATER VALVE

NOT USED

(20)

SV1646

Electrical System Section 6

6-22 Part No. 80-1100-3

Q420/Q450/Q600/Q800/Q1000 - SELF CONTAINED 1 PHASE WITHOUT TERMINAL BOARD

*Overload

(51)

(48)

(45)

(46)

(49)

(50)

(47)

(55)

(61)

(20) (21)

(76)

(60)

(98)

(57)

(74)

(58)

(59)

(99)

(85)

(86)

1 5

FUSE (7A)

TRANS.

(56)

ICE THICKNESS PROBE

(75)

HARVEST SOLENOID

DUMP SOLENOID

(81)

(22)

WATER PUMP

CONTACTOR COIL

HIGH PRES CUTOUT

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

LOW D.C. VOLTAGE PLUG

CONTACTOR CONTACTS

(42)

COMPRESSOR

FAN CYCLE CONTROL

FAN MOTOR (AIR COOLED ONLY)

RUN CAPACITOR**

L2 (N

)

SEE SERIAL PLATE FOR VOLTAGE

CAUTION: DISCONNECT POWER BEFORE WORKING

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

TERMINATES AT PIN CONNECTION

PTCR

(64)

(63)

BIN SWITCH

(62)

(66)

(65)

(69)

(67)

(68)

TOGGLE SWITCH

66 62

ICE OFF

CLEAN

(62)

VIEW FOR WIRING

CLEAN LIGHT

WATER LEVEL

WATER LEVEL PROBE

(77)

(80)

WATER VALVE

NOT USED

(89)

(88)

SV2071

Section 6 Electrical System

Part No. 80-1100-3 6-23

Q800/Q1000 - SELF CONTAINED - 3 PHASE WITH TERMINAL BOARD

TB31

TB37

(77)

(76)

(98)

(74)

(59)

(73)

(99)

(85)

(86)

(75)

HARVEST SOLENOID

DUMP SOLENOID

(81)

(80)

WATER PUMP

TB3

CONTACTOR COIL

TB3

FAN CYCLE CONTROL

FAN MOTOR (AIR COOLED ONLY)

RUN CAPACITOR**

SEE SERIAL PLATE FOR VOLTAGE

CAUTION: DISCONNECT POWER BEFORE WORKING

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

TERMINATES AT PIN CONNECTION

(61)

(60)

(57)

(58)

4 1

3 5

FUSE (7A)

TRANS.

(56)

ICE THICKNESS PROBE

TB3

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

LOW D.C. VOLTAGE PLUG

TB32

TB35

TB34

(53)

TB33

(52)

HIGH PRES CUTOUT

(96)

(42)

COMPRESSOR

TB35

(55)

TB3

(64)

(63)

BIN SWITCH

(62)

(66)

(65)

(69)

(67)

(68)

TOGGLE SWITCH

66 62

ICE

OFF

CLEAN

(66)

(62)

VIEW FOR WIRING

INTERNAL WORKING VIEW

CLEAN LIGHT

WATER LEVEL LIGHT

(21)

(22)

WATER VALVE

WATER LEVEL PROBE

NOT USED

(20)

SV1647a

Electrical System Section 6

6-24 Part No. 80-1100-3

Q800/Q1000 - SELF CONTAINED - 3 PHASE WITHOUT TERMINAL BOARD

L1L2L3

(51)

(55)

(61)

(20) (21)

(76)

(60)

(98)

(57)

(74)

(58)

(59)

(99)

(85)

(86)

1 5

FUSE (7A)

TRANS.

(56)

ICE THICKNESS PROBE

(75)

HARVEST SOLENOID

DUMP SOLENOID

(81)

(22)

WATER PUMP

CONTACTOR COIL

HIGH PRES CUTOUT

BIN SWITCH LIGHT HARVEST LIGHT/

SAFETY LIMIT CODE LIGHT

LOW D.C. VOLTAGE PLUG

CONTACTOR CONTACTS

T1T3

FAN CYCLE CONTROL

FAN MOTOR (AIR COOLED ONLY)

RUN CAPACITOR**

SEE SERIAL PLATE FOR VOLTAGE

CAUTION: DISCONNECT POWER BEFORE WORKING

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

TERMINATES AT PIN CONNECTION

(64)

(63)

BIN SWITCH

(62)

(66)

(65)

(69)

(67)

(68)

TOGGLE SWITCH

66 62

ICE

OFF

CLEAN

(62)

VIEW FOR WIRING

CLEAN LIGHT

WATER LEVEL

WATER LEVEL PROBE

(77)

(80)

WATER VALVE

NOT USED

(89)

(88)

(42)

SV2072

Section 6 Electrical System

Part No. 80-1100-3 6-25

Q1300/Q1800 - SELF CONTAINED - 1 PHASE WITH TERMINAL BOARD

TB31

TB37

TB32

TB35

TB34

*OVERLOAD

(53)

TB33

(52)

(51)

(48)

(45)

(46) (50)

(49)

(47)

(55)

(61)

(77)

(76)

(60)

(98)

(57)

(74)

(58)

(59)

(73)

(99)

(85) (86)

1 3 5

FUSE (7A)

TRANS.

(56)

ICE THICKNESS PROBE

(75)

LH HARVEST SOLENOID

DUMP SOLENOID

(81)

(80)

WATER PUMP

TB3

CONTACTOR COIL

HIGH PRES CUTOUT

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

LOW D.C. VOLTAGE PLUG

TB35

TB3

CRANKCASE HEATER

(94)

(95)

B35

TB3

CONTACTOR CONTACTS

(96)

(42)

COMPRESSOR

RUN CAPACITOR

FAN CYCLE CONTROL

FAN MOTOR (AIR COOLED ONLY)

RUN CAPACITOR**

L2(N)

SEE SERIAL PLATE FOR VOLTAGE

CAUTION: DISCONNECT POWER BEFORE WORKING

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

TERMINATES AT PIN CONNECTION

PTCR

(44)

(64)

(63)

BIN SWITCH

(62)

(66)

(65)

(69)

(67)

(68)

TOGGLE SWITCH

66 62

ICE

OFF

CLEAN

(66)

(62)

VIEW FOR WIRING

INTERNAL WORKING VIEW

WATER VALVE

(21)

(22)

CLEAN LIGHT

WATER LEVEL LIGHT

WATER LEVEL PROBE

(87)

(88)

RH HARVEST SOLENOID

AUCS DISPENSE TIME

(20)

SV1652

Electrical System Section 6

6-26 Part No. 80-1100-3

Q1300/Q1600/Q1800 - SELF CONTAINED - 1 PHASE WITHOUT TERMINAL BOARD

*OVERLOAD

(51)

(48)

(95)

(45)

(46)

(49)

(47)

(50)

(94)

(96)

(55)

(61)

(20) (21)

(76)

(60)

(98)

(57)

(74)

(58)

(59)

(99)

(85)

(86)

1 5

FUSE (7A)

TRANS.

(56)

ICE THICKNESS PROBE

(75)

HARVEST SOLENOID

DUMP SOLENOID

(81)

(22)

WATER PUMP

CONTACTOR COIL

HIGH PRES CUTOUT

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

LOW D.C. VOLTAGE PLUG

CONTACTOR CONTACTS

L1 L2

COMPRESSOR

CRANKCASE HEATER

RUN CAPACITOR

FAN CYCLE CONTROL

FAN MOTOR (AIR COOLED ONLY)

RUN CAPACITOR**

L2 (N

)

SEE SERIAL PLATE FOR VOLTAGE

CAUTION: DISCONNECT POWER BEFORE WORKING

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

TERMINATES AT PIN CONNECTION

PTCR

(64)

(63)

BIN SWITCH

(62)

(66)

(65)

(69)

(67)

(68)

TOGGLE SWITCH

66 62

ICE

OFF

CLEAN

(62)

VIEW FOR WIRING

CLEAN LIGHT

WATER LEVEL LIGHT

WATER LEVEL PROBE

AUCS DISPENSE TIME

(77)

(80)

WATER VALVE

(89)

(88)

(42)

SV2075

Section 6 Electrical System

Part No. 80-1100-3 6-27

Q1300/Q1800 - SELF CONTAINED - 3 PHASE WITH TERMINAL BOARD

TB31

TB37

(77)

(76)

(98)

(74)

(59)

(73)

(99)

(85)

(86)

(75)

LH HARVEST SOLENOID

DUMP SOLENOID

(81)

(80)

WATER PUMP

TB30

CONTACTOR COIL

TB30

FAN CYCLE CONTROL

FAN MOTOR (AIR COOLED ONLY)

RUN CAPACITOR**

SEE SERIAL PLATE FOR VOLTAGE

CAUTION: DISCONNECT POWER BEFORE WORKING

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

TERMINATES AT PIN CONNECTION

(61) (60)

(57)

(58)

4 1 3

FUSE (7A)

TRANS.

(56)

ICE THICKNESS PROBE

TB30

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

TB32

TB35

TB34

(53)

TB33

(52)

HIGH PRES CUTOUT

TB35

CRANKCASE HEATER

(94)

(95)

(96)

(42)

COMPRESSOR

L3 L2 L1

TB35

(55)

LOW D.C. VOLTAGE PLUG

(64)

(63)

BIN SWITCH

(62)

(66)

(65)

(69)

(67)

(68)

TOGGLE SWITCH

68 67

ICE OFF

CLEAN

(66)

(62)

VIEW FOR WIRING

INTERNAL WORKING VIEW

N - 50H

ONLY

TB30

NOTE: WIRE (96) IS NOT USED ON 50HZ

TB30

CLEAN LIGHT

WATER LEVEL LIGHT

WATER VALVE

(21)

(22)

(87)

(88)

RH HARVEST SOLENOID

AUCS DISPENSE TIME

WATER LEVEL PROBE

(20)

SV1653

Electrical System Section 6

6-28 Part No. 80-1100-3

Q1300/Q1600/Q1800 - SELF CONTAINED - 3 PHASE WITHOUT TERMINAL BOARD

(77)

(76)

(98) (99)

(85)

(86)

(75)

LH HARVEST SOLENOID

DUMP SOLENOID

(81)

(80)

WATER PUMP

CONTACTOR COIL

FAN CYCLE CONTROL

FAN MOTOR (AIR COOLED ONLY)

RUN CAPACITOR**

SEE SERIAL PLATE FOR VOLTAGE

CAUTION: DISCONNECT POWER BEFORE WORKING

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

TERMINATES AT PIN CONNECTION

(61)

(60)

(57)

(59)

(58)

1 5

FUSE (7A)

TRANS.

(56)

ICE THICKNESS PROBE

BIN SWITCH LIGHT

HARVEST LIGHT/

SAFETY LIMIT CODE LIGHT

(51)

HIGH PRES CUTOUT

CRANKCASE HEATER

(94)

(95)

CONTACTOR CONTACTS

(96)

COMPRESSOR

L3 L2 L1

L2L3

LOW D.C. VOLTAGE PLUG

(64)

(88)

(89) (55)

(42)

(63)

BIN SWITCH

(62)

(65)

(69)

(67)

(68)

TOGGLE SWITCH

68 67 69

66 62

ICE OFF

CLEAN

(66)

(62)

VIEW FOR WIRING

N - 50H

ONLY

NOTE: WIRE (96) IS NOT USED ON 50HZ

CLEAN LIGHT

WATER LEVEL LIGHT

WATER VALVE

(21)(20)

(22)

(87)

RH HARVEST SOLENOID

AUCS DISPENSE TIME

WATER LEVEL PROBE

(88)

SV3008

Section 6 Electrical System

Part No. 80-1100-3 6-29

Q450/Q600/Q800/Q1000 - REMOTE - 1 PHASE WITH TERMINAL BOARD

TB31

TB37

TB32

TB35

(55)

(77)

(76)

(98)

(59)

(99)

(75)

HPR SOLENOID

(79)(78)

HARVEST SOLENOID

DUMP SOLENOID

(81)

(80)

WATER PUMP

LIQUID LINE SOLENOID

TB3

(82)

(83)

HIGH PRES CUTOUT

REMOTE

FAN MOTOR

RUN CAPACITOR

L2 (N)

SEE SERIAL PLATE FOR VOLTAGE

CAUTION: DISCONNECT POWER BEFORE WORKING

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

REMOTE CONDENSER

TERMINATES AT

PIN CONNECTION

(F1)

(F2)

(61) (60)

(57)

(58)

4 1 3

FUSE (7A)

TRANS.

(56)

ICE THICKNESS PROBE

TB3

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

(74)

(73)

TB3

CONTACTOR COIL

TB34

*OVERLOAD

(53)

TB33

(52)

(51)

(48) (45)

(46)

(50)

(49)

(47)

B35

CONTACTOR CONTACTS

(42)

COMPRESSOR

RUN CAPACITOR

PTCR

TB3

LOW D.C. VOLTAGE PLUG

(64)

(63)

BIN SWITCH

(62)

(66)

(65)

(69)

(67)

(68)

TOGGLE SWITCH

68 67

66 62

ICE OFF

CLEAN

(66)

(62)

VIEW FOR WIRING

INTERNAL WORKING VIEW

CLEAN LIGHT

WATER LEVEL LIGHT

WATER LEVEL PROBE

(22)(21)

WATER VALVE

NOT USED

(20)

SV1648

Electrical System Section 6

6-30 Part No. 80-1100-3

Q450/Q600/Q800/Q1000 - REMOTE - 1 PHASE WITHOUT TERMINAL BOARD

*OVERLOAD

(51)

(48)

(42)

(45)

(46)

(49)

(47)

(50)

(94)

(55)

(61)

(20) (21)

(77)

(60)

(98)

(57)

(74)

(58)

(59) (83) (82)

(99)

4 1 3 5

FUSE (7A)

TRANS.

(56)

ICE THICKNESS PROBE

(75)

HARVEST SOLENOID

HPR SOLENOID

DUMP SOLENOID

(81)

(22)

WATER PUMP

CONTACTOR COIL

HIGH PRES CUTOUT

BIN SWITCH LIGHT HARVEST LIGHT/

SAFETY LIMIT CODE LIGHT

LOW D.C. VOLTAGE PLUG

CONTACTOR CONTACTS

COMPRESSOR

RUN CAPACITOR

LIQUID LINE SOLENOID

REMOTE

FAN MOTOR

REMOTE CONDENSER

RUN CAPACITOR**

L2 (

SEE SERIAL PLATE FOR VOLTAGE

CAUTION: DISCONNECT POWER BEFORE WORKING

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

PTCR

F1 F2

(64)

(63)

BIN SWITCH

(62)

(66)

(65)

(69)

(67)

(68)

TOGGLE SWITCH

68 67

66 62

ICE

OFF

CLEAN

(62)

VIEW FOR WIRING

CLEAN LIGHT

WATER LEVEL LIGHT

WATER LEVEL PROBE

AUCS DISPENSE TIME

(88) (80)

(78) (79)

WATER VALVE

(89)

(88)

SV2073

Section 6 Electrical System

Part No. 80-1100-3 6-31

Q800/Q1000 -REMOTE - 3 PHASE WITH TERMINAL BOARD

TB31

TB37

TB32

TB35

TB34

(53)

TB33

(52)

(55)

(77)

(76)

(98)

(59)

(99)

(75)

HPR SOLENOID

(79)

(78)

HARVEST SOLENOID

DUMP SOLENOID

(81)

(80)

WATER PUMP

LIQUID LINE SOLENOID

TB3

(82)

(83)

HIGH PRES CUTOUT

TB3

CONTACTOR CONTACTS

(96)

(42)

COMPRESSOR

REMOTE

FAN MOTOR

RUN CAPACITOR

EE SERIAL PLATE FOR VOLTAGE

CAUTION: DISCONNECT POWER BEFORE WORKING

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

REMOTE CONDENSER

L3 L2 L1

TB35

TERMINATES AT

PIN CONNECTION

(F1)

(F2)

(61)

(60)

(57)

(58)

1 3 5

FUSE (7A)

TRANS.

(56)

ICE THICKNESS PROBE

TB3

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

LOW D.C. VOLTAGE PLUG

(74)

(73)

TB3

CONTACTOR COIL

(64)

(63)

BIN SWITCH

(62)

(66)

(65)

(69)

(67)

(68)

TOGGLE SWITCH

68 67

66 62

ICE

OFF

CLEAN

(62)

VIEW FOR WIRING

INTERNAL WORKING VIEW

CLEAN LIGHT

WATER LEVEL LIGHT

WATER LEVEL PROBE

(22)

(21)

WATER VALVE

AUCS DISPENSE TIME

(20)

SV1649

Electrical System Section 6

6-32 Part No. 80-1100-3

Q800/Q1000 -REMOTE - 3 PHASE WITHOUT TERMINAL BOARD

(55)

(89)

(88)

(42)

(51)

(85)

(77)

(76)

(98)

(59)

(99)

(75)

HPR SOLENOID

(79)

(78)

HARVEST SOLENOID

DUMP SOLENOID

(81)

(80)

WATER PUMP

LIQUID LINE SOLENOID

(82)

(74)

(83)

HIGH PRES CUTOUT

CONTACTOR CONTACTS

COMPRESSOR

REMOTE

FAN MOTOR

RUN CAPACITOR

SEE SERIAL PLATE FOR VOLTAGE

CAUTION: DISCONNECT POWER BEFORE WORKING

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

REMOTE CONDENSER

L3 L2 L1

(F1)

(F2)

(61)

(20)

(60)

(57)

(58)

1 5

FUSE (7A)

TRANS.

(56)

ICE THICKNESS PROBE

BIN SWITCH LIGHT HARVEST LIGHT/

SAFETY LIMIT CODE LIGHT

LOW D.C. VOLTAGE PLUG

CONTACTOR COIL

(64)

(63)

BIN SWITCH

(62)

(66)

(65)

(69)

(67)

(68)

TOGGLE SWITCH

68 67

66 62

ICE

OFF

CLEAN

(62)

VIEW FOR WIRING

INTERNAL WORKING VIEW

CLEAN LIGHT

WATER LEVEL LIGHT

WATER LEVEL PROBE

(22)

(21)

WATER VALVE

NOT USED

SV2074

Section 6 Electrical System

Part No. 80-1100-3 6-33

Q1300/Q1800 - REMOTE - 1 PHASE WITH TERMINAL BOARD

TB31

TB37

TB32

B35

TB34

(53)

TB33

(52)

(51)

(55)

(77)

(76)

(98)

(59)

(99)

(75)

WATER VALVE

(22)

(21)

LH HARVEST SOLENOID

DUMP SOLENOID

(81)

(80)

WATER PUMP

LIQUID LINE SOLENOID

TB3

(82)

(83)

HIGH PRES CUTOUT

TB35

CONTACTOR CONTACTS

(42)

REMOTE

FAN MOTOR

RUN CAPACITOR

L2 (N)

SEE SERIAL PLATE FOR VOLTAGE

CAUTION: DISCONNECT POWER BEFORE WORKING

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

REMOTE CONDENSER

TERMINATES AT

PIN CONNECTION

(F1)

(F2)

(61)

(60)

(57)

(58)

4 1

FUSE (7A)

TRANS.

(56)

ICE THICKNESS PROBE

TB3

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

LOW D.C. VOLTAGE PLUG

*OVERLOAD

(48)

(45)

(46)

(50)

(49)

(47)

(74)

(73)

TB3

CONTACTOR COIL

TB35

TB3

CRANKCASE HEATER

(94)(95)

TB3

CONTACTOR CONTACTS

(96)

COMPRESSOR

RUN CAPACITOR

PTCR

(44)

(64)

(63)

BIN SWITCH

(62)

(66)

(65)

(69)

(67)

(68)

TOGGLE SWITCH

66 62

ICE OFF

CLEAN

(66)

(62)

VIEW FOR WIRING

INTERNAL WORKING VIEW

HPR SOLENOID

(87)(88)

CLEAN LIGHT

WATER LEVEL LIGHT

WATER LEVEL PROBE

(79)(78)

RH HARVEST SOLENOID

AUCS DISPENSE TIME

(20)

SV1650

Electrical System Section 6

6-34 Part No. 80-1100-3

Q1300/Q1600/Q1800 - REMOTE - 1 Phase Without Terminal Board

TB37

(48)

(51)

(55)(89)

(88)

(42)

(77)

(76)

(98)

(59)

(99)

(75)

RH HARVEST SOLENOID

(87)

(88)

HPR SOLENOID

(79)

(78)

LH HARVEST SOLENOID

DUMP SOLENOID

(81)

(80)

WATER PUMP

LIQUID LINE SOLENOID

(82)

(83)

HIGH PRES CUTOUT

CONTACTOR CONTACTS

CONTACTOR

RUN CAPACITOR

CONTACTS

(49)

(96)

(74)

(94)

(47)

(45)

(46) (50)

(44)

PTCR

(95)

COMPRESSOR

CRANKCASE HEATER

*OVERLOAD

REMOTE

FAN MOTOR

RUN CAPACITOR

SEE SERIAL PLATE FOR VOLTAGECAUTION: DISCONNECT POWER BEFORE WORKING

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

REMOTE CONDENSER

L2 (N)

(F1) (F2)

(F2)

(61)

(60)

(57)

(58)

4 1

3 5

FUSE (7A)

TRANS.

(56)

ICE THICKNESS PROBE

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

LOW D.C. VOLTAGE PLUG

CONTACTOR COIL

(64)

(63)

BIN SWITCH

(62)

(66)

(65)

(69)

(67)

(68)

TOGGLE SWITCH

68 67

66 62

ICE

OFF

CLEAN

(62)

VIEW FOR WIRING

INTERNAL WORKING VIEW

CLEAN LIGHT

WATER LEVEL LIGHT

WATER LEVEL PROBE

(22)

(21)(20)

WATER VALVE

AUCS DISPENSE TIME

SV2076

Section 6 Electrical System

Part No. 80-1100-3 6-35

Q1300/Q1800 - REMOTE - 3 PHASE WITH TERMINAL BOARD

(64)

(63)

BIN SWITCH

(62)

(66)

(65)

(69)

(67)

(68)

TOGGLE SWITCH

68 67

66 62

ICE

OFF

CLEAN

(66)

(62)

VIEW FOR WIRING

INTERNAL WORKING VIEW

TB31

TB37

TB32

TB35

TB34

(53)

TB33 (52)(51)

(55)

(77)

(76)

(98)

(59)

(99)

(75)

WATER VALVE

(22)

(21)

LH HARVEST SOLENOID

DUMP SOLENOID

(81)

(80)

WATER PUMP

LIQUID LINE SOLENOID

TB30

(82)

(83)

HIGH PRES CUTOUT

TB35

TB30

CRANKCASE HEATER

(94)

TB30

CONTACTOR CONTACTS

(96)

(42)

COMPRESSOR

REMOTE

FAN MOTOR

RUN CAPACITOR

SEE SERIAL PLATE FOR VOLTAGE

CAUTION: DISCONNECT POWER BEFORE WORKING

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

REMOTE CONDENSER

L3 L2 L1

L2L3

TB35

TERMINATES AT

PIN CONNECTION

(F1)

(F2)

(61) (60)

(57)

(58)

4 1 3 5

FUSE (7A)

TRANS.

(56)

ICE THICKNESS PROBE

TB30

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

LOW D.C. VOLTAGE PLUG

(74)

(73)

TB30 CONTACTOR COIL

(95)

N - 50H

ONLY

NOTE: WIRE (96) IS NOT USED ON 50HZ

TB30

HPR SOLENOID

(87)

(88)

CLEAN LIGHT WATER LEVEL LIGHT

WATER LEVEL PROBE

(79)

(78)

RH HARVEST SOLENOID

AUCS DISPENSE TIME

(20)

SV1651

Electrical System Section 6

6-36 Part No. 80-1100-3

Q1300/Q1600/Q1800 - REMOTE - 3 PHASE WITHOUT TERMINAL BOARD

(55)(89)

(88)

(42)

(51)

(95) (94)

(96) (96)

NOTE: WIRE (96) IS NOT USED ON 50HZ

(77)

(76)

(98)

(59)

(99)

(75)

HPR SOLENOID

(87)

(88)

(79)

(78)

RH HARVEST SOLENOID

DUMP SOLENOID

(81)

(80)

WATER PUMP

LIQUID LINE SOLENOID

(82)(83)

HIGH PRES CUTOUT

CONTACTOR CONTACTS

COMPRESSOR

REMOTE

FAN MOTOR

RUN CAPACITOR

SEE SERIAL PLATE FOR VOLTAGE

CAUTION: DISCONNECT POWER BEFORE WORKING

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

REMOTE CONDENSER

L3 L2 L1

(F1)

(F2)

(61)

(20)

(60)

(57)

(58)

1 5

FUSE (7A)

TRANS.

(56)

(74)

ICE THICKNESS PROBE

BIN SWITCH LIGHT HARVEST LIGHT/

SAFETY LIMIT CODE LIGHT

LOW D.C. VOLTAGE PLUG

CONTACTOR COIL

(64)

(63)

BIN SWITCH

(62)

(66)

(65)

(69)

(67)

(68)

TOGGLE SWITCH

68 67

66 62

ICE OFF

CLEAN

(62)

VIEW FOR WIRING

INTERNAL WORKING VIEW

CLEAN LIGHT WATER LEVEL LIGHT

WATER LEVEL PROBE

(22)

(21)

WATER

N - 50 H

ONL

VALVE

NOT USED

LH HARVEST SOLENOID

SV2077

Section 6 Electrical System

Part No. 80-1100-3 6-37

THIS PAGE INTENTIONALLY LEFT BLANK

Electrical System Section 6

6-38 Part No. 80-1100-3

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

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

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 7 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 7 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.

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 evaporatormounting bracket.

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 chec k bin switch operation.

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.

Warning

Disconnect electrical power to the entire ice machine before proceeding.

Reading Result

Open (OL) Replace fuse Closed (O) Fuse is good

Important

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

Section 6 Electrical System

Part No. 80-1100-3 6-39

Check Procedure

1. Set the toggle switch to OFF.

2. Watch the bin switch light on the control board.

3. Move the water curtain toward the evaporator. The bin switch must close. The bin switch light “on” indicates the bin switch has closed properly.

Move the water curtain away from the evaporator. The bin switch must open. The bin switch light “off” indicates the bin switch has opened properly.

OHM Test

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 numerous times by opening and closing the water curtain.

NOTE: To prevent misdiagnosis:

• Always use the water curtain magnet to cycle the switch (a larger or smaller magnet will affect switch operation).

• Watch for consistent readings when the bin switch is cycled open and closed (bin switch failure could be erratic).

Water Curtain Removal Notes

The water curtain must be on (bin switch closed) to start 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 re mains 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.

Electrical System Section 6

6-40 Part No. 80-1100-3

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 clo sed 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 must be within published guidelines for the compressor. The resistance values between C and S and between C and R, when added together, sh ould 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 must be within published guidelines for the compressor. 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 the 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.

The voltage when the compressor is trying to start must be within ±10% of the nameplate voltage.

Diagnosing Capacitors

• If the compr essor atte mpt s to st art, or h ums and t rips

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 capa citor terminals before testing.

Section 6 Electrical System

Part No. 80-1100-3 6-41

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 heat 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 star ting.

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 Q model ice machines have a built-in 3-minute off time before it can restart.

Electrical System Section 6

6-42 Part No. 80-1100-3

Q-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 7 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 three -minute delay period is complete.

Figure 6-15. During Start-Up (First .25 - 1.0 Seconds)

Figure 6-16. After Start-Up

(Current Flows Through 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, other wise 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 comp ressor has short-cycled, or th e compressor overload has opened. Move the toggle switch to OFF and allow the compressor and PTCR to cool.

Continued on next page …

SV1506

CONTACTOR CONTACTS

RUN CAPACITOR

PTCR

COMPRESSOR

SV1507

CONTACTOR CONTACTS

RUN CAPACITOR

PTCR

COMPRESSOR

Section 6 Electrical System

Part No. 80-1100-3 6-43

There are other problems that may cause compressor start-up failure with a good PTCR in a new, properly wired ice machine.

• Th e 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

1. Visually inspect the PTCR. Check for signs of physical damage.

NOTE: The PTCR case temperature may reach 21 0 °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.

Figure 6-17. Manitowoc PTCR’s 8505003 & 8504993

Figure 6-18. Manitowoc PTCR 8504913

Warning

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

Model

Manitowoc

Part Number

Cera-Mite

Part Number

Room

Temperature

Resistance

Q200 Q280 Q320 Q420 Q450

8505003 305C20 22-50 Ohms

Q600 Q800

Q1000

8504993 305C19 18-40 Ohms

Q1300 Q1600 Q1800

8504913 305C9 8-22 Ohms

SV1540

SV1541

Electrical System Section 6

6-44 Part No. 80-1100-3

ICE/OFF/CLEAN TOGGLE SWITCH Function

The switch is used to place the ice machine in ICE, OFF or CLEAN mode of operation.

Specifications

Double-pole, double-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 all wires from the switch, or by disconnecting the Molex connector and removing wire #69 from the toggle switch.

3. Check across the toggle switch terminals using a calibrated ohm meter . Note wher e the wire numbers are connected to the switch terminals, or refer to the wiring diagram to take proper readings.

4. Replace the toggle switch if ohm readings do not match all three switch settings.

CONTROL BOARD RELAYS Function

The control board relays energize and de -e n ergize system components.

Specifications

Relays are not field replaceable. There are five relays on the control board:

Switch Setting Terminals Ohm Reading

ICE

66-62 Open 67-68 Closed 67-69 Open

CLEAN

66-62 Closed 67-68 Open 67-69 Closed

OFF

66-62 Open 67-68 Open 67-69 Open

Relay Controls

#1 Water Pump #2 Water Inlet Valve #3 Harvest Valve / HPR Valve (Remotes) #4 Water Dump Valve #5 Contactor (Self-Contained)

Contactor / Liquid Line Solenoid (Remotes)

Manitowoc QD0323W, QR0420A, QD0322A, QY0325W, QY0324A Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual