Manitowoc Ice QYP0274A Manuel de service

Download

Page 1

ICE MACHINES

-Mode

2003 Manitowoc Ice, Inc.

80-1100-3

6/03

Page 2

Safety Notices

Procedural 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:

Warning

PERSONAL INJURY POTENTIAL

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

Warning

Text in a Warning box alerts you to a potential personal injury situation. Be sure to read the Warning statement before proceeding, and work carefully.

Caution

Text in a Caution box alerts you to a situation in which you could damage the ice machine. Be sure to read the Caution statement before proceeding, and work carefully.

As you work on a Q-Series Ice Machine , be sur e to re ad the procedural notices in this manual. These notices supply helpful information which may assist you as you work.

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

Important

Text in an Important box provides you with information that may help you perform a procedure more efficiently. Disregarding this information will not cause damage or injury, but it may slow you down as you work.

NOTE: Text set off as a Note provides you with simple, but useful, e xtra inf ormation about the procedure y ou are performing.

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

Specifications and design are subject to change without notice.

Page 3

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

Section 2 Installation Instructions

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

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

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

Remote Condenser Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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

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

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

Table of Contents

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Part No. 80-1100-3 1

Page 4

Table of Contents (continued)

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

2 Part No. 80-1100-3

Page 5

Section 3 Ice Machine Operation

Table of Contents (continued)

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

Self-Contained Air- and Water-Cooled Q200/Q280/Q320/Q370/Q420/Q450/Q600/Q800/Q1000/Q1300/Q1600/Q1800 . 3-2

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

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

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

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

Remote

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

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

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

Harvest Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Automatic Shut-Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Operational Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Water Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Ice Thickness Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Harvest Sequence Water Purge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Section 4 Maintenance

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

Interior Cleaning and Sanitizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

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

Cleaning & Sanitizing Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Ice Machine Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

Exterior Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

Cleaning the Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

Water-Cooled Condenser and Water Regulat ing Valve . . . . . . . . . . . . . . . . 4-9

Removal from Service/Winterization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

Self-Contained Air-Cooled Ice Machines . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

Water-Cooled Ice Machines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

Remote Ice Machines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

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

Part No. 80-1100-3

Page 6

Section 6 Electrical System

Table of Contents (continued)

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

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

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

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

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

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

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 With out 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

6-47

4 Part No. 80-1100-3

Page 7

Section 7 Refrigeration System

Table of Contents (continued)

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

Part No. 80-1100-3

Page 8

Table of Contents (continued)

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

6 Part No. 80-1100-3

Page 9

Section 1

General Information

Model Numbers

This manual covers the following models:

Self-Contained

Air-Cooled

QR0320A QD0322A QY0324A

QR0420A QD0422A QY0424A

QR0200A QD0202A QY0204A

QR0280A QD0282A QY0284A

QD0372A QY0374A

QR0450A QD0452A QY0454A

QR0600A QD0602A QY0604A

QR0800A QD0802A QY0804A

QR1000A QD1002A QY1004A

QR1300A QD1302A QY1304A

QR1800A QD1802A QY1804A

Self-Contained

Water-Cooled

QR0321W QD0323W QY0325W

QR0421W QD0423W QY0425W

QR0201W QD0203W QY0205W

QR0281W QD0283W QY0285W

QD0373W QY0375W

QR0451W QD0453W QY0455W

QR0601W QD0603W QY0605W

QR0801W QD0803W QY0805W

QR1001W QD1003W QY1005W

QR1301W QD1303W QY1305W

QD1603W QY1605W

QR1801W QD1803W QY1805W

Remote

QR0490N QD0492N QY0494N

QR0690N QD0692N QY0694N

QR0890N QD0892N QY0894N

QR1090N QD1092N QY1094N

QR1390N QD1392N QY1394N

QD1693N QY1694N

QR1890N QD1892N QY1894N

How to Read a Model Number

9 REMOTE

AIR-COOLED

# CU BE SIZ E 0 REGULAR

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

CONDENSER TYPE AIR-COOLED

WATER-COOLED AIR-COOLED WATER-COOLED AIR-COOLED WATER-COOLED

Q R 0450 A

ICE MACHINE

MODEL

ICE CUBE SIZE R REGULAR

D DICE Y HALF DICE

ICE MACHINE

SERIES

CONDENSER TYPE A SELF-CONTAINED AIR-COOLED

W SELF-CONTAINED WATER-COOLE N REMOTE AIR-COOLED

Ice Cube Sizes

Regular

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

2.86 x 2.86 x 2.22 cm

Dice

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

2.22 x 2.22 x 2.22 cm

Half Dice

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

0.95 x 2.86 x 2.22 cm

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

Warning

PERSONAL INJURY POTENTIAL

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

Part No. 80-1100-3 1-1

Page 10

General Information Section 1

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.

1-2

SV1600

Figure 1-1. Model/Serial Number Location

Part No. 80-1100-3

Page 11

Section 1 General Information

Warranty Coverage

GENERAL

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

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

Important

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

PARTS

1. Manitowoc warrants the ice machine a gainst def ects 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, w ater 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.

Part No. 80-1100-3 1-3

Page 12

General Information Section 1

THIS PAGE INTENTIONALLY LEFT BLANK

1-4

Part No. 80-1100-3

Page 13

Section 2

Installation Instructions

General

Refer to Installation Manual f or complete installation guidelines.

Ice Machine Dimensions

Q320/Q370/Q420 ICE MACHINES

WATER COOLED AIR COOLED

Failure to follow these installation guidelines may affect warranty coverage.

Important

SV1602 SV1611

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)

Part No. 80-1100-3 2-1

Page 14

Installation Instructions Section 2

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

WATER-COOLED SELF CONTAINED

SV1612 SV1628

AIR-COOLED

SELF CONTAINED

WATER-CO OLED

2-2

SV1613

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)

SV1627

Ice Machine Dimension H

Q1300/Q1600 29.5 in (74.9 cm)

Q1800 29.5 in (74.9 cm)

Part No. 80-1100-3

Page 15

Section 2 Installation Instructions

Q1300/Q1600/Q1800 ICE MACHINES (CONT.)

REMOTE AIR-COOLED

SV1629

Ice Storage Bin Dimensions

S170/S400/S570 ICE STORAGE BINS

SV1609

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)

S320/S420 ICE STORAGE BINS

SV1614

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)

Part No. 80-1100-3 2-3

Page 16

Installation Instructions Section 2

S970 ICE STORAGE BINS

Warning

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

The Q1300, Q1600 and Q 1 80 0 series ice machines require adding Manitowoc Ice Deflector Kit K00139 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.

Remote Condenser Dimensions

JC0495/JC0895/JC1095/JC1395

SV1610 SV1297

JC1895

2-4

SV1301

Part No. 80-1100-3

Page 17

Section 2 Installation Instructions

Location of Ice Machine

The location selected for the ice machin e must meet the following criteria. If any of these criteria are not met, select another location.

• The location must be free of airborne and other contaminants.

• The air temperature must be at least 35°F (1. 6°C), but must not exceed 110°F (43.4°C).

• 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.

Q1300/Q1600/

Q1800

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

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

Q370

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

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

All other

Q models

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.

The ice machine must be protected if it will be subjected to temperatures belo w 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.

Self-Contained

Air-Cooled

Self-Contained

Air-Cooled

Self-Contained

Air-Cooled

Caution

Water-Cooled

and Remote

Water-Cooled

and Remote

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 stac king kit.

Q450/Q600/

Q800/Q1000

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.

Stacked

Self-Contained

Air-Cooled

Stacked

Water-Cooled

and Remote*

Ice Machine Heat of Rejection

Series

Ice Machine

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

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

the figure shown is an average.

Air Conditioning

Heat of Rejection

Ice machines, like other refrigeration equipment, reject heat through the condenser. It is helpful to know the amount of heat rejected by the ice machine when sizing air conditioning equipment where self -c on ta ine d 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 am ount of heat add ed to an air conditioned environment by an ice machine using a water-cooled or remote condenser is negligible.

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

Peak

Part No. 80-1100-3 2-5

Page 18

Installation Instructions Section 2

Leveling the Ice Storage Bin

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

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

Caution

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

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 i nstructions are supp lied with the casters.

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.

SCREWS

AIR

BAFFLE

THREAD LEVELING LEG INTO BASE OF

THREAD ‘FOOT’ IN AS

FAR AS POSSIBLE

Figure 2-1. Leveling Leg and Foot

CABINET

SV1607

Figure 2-2. Air Baffle

SV1606

2-6

Part No. 80-1100-3

Page 19

Section 2 Installation Instructions

Electrical Service

GENERAL

Warning

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

VOLTA G E

The maximum allowabl e voltag e variation is ±10% of the rated voltage at i ce machine start-up (when the electrical load is highest).

Warning

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

FUSE/CIRCUIT BREAKER

A separate fuse/circuit break er 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.

Part No. 80-1100-3 2-7

Page 20

Installation Instructions Section 2

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

Vol tag e

Ice Machine

Q320

Q370

Q420

Phase

Cycle

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 4.7 115/1/60 20 12.9 20 12.2

208-230/1/60 15 6.2 15 5.8

230/1/50 15 6.2 15 5.8 115/1/60 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

Table 2-2. Q200 - Q1000 Ice Machines

Ice Machine

Q200

Q280

Q450

Q600

Q800

Q1000

Q1300

Q1600

Q1800

Voltage

Phase

Cycle

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 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 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

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

230/1/50 15 9.2 15 8.8 15 9.4 208-230/1/60 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 11.2 208-230/1/60 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 14.6 208-230/1/60 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 7.3 208-230/1/60 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 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

Maximum

Fuse/Circuit

Breaker

Maximum Fuse/

Circuit Breaker

Air-Cooled Water Cooled Remote

Circuit Amps

Air-Cooled Water Cooled

Minimum

Circuit Amps

Maximum

Fuse/Circuit

Breaker

Maximum Fuse/

Circuit Breaker

Minimum

Circuit Amps

Maximum

Fuse/Circuit

Breaker

Minimum

Circuit Amps

Minimum

Circuit Amps

2-8

Part No. 80-1100-3

Page 21

Section 2 Installation Instructions

Self-Contained Electrical Wiring Connections

Warning

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

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

Though wire nuts are sho wn in the drawings, the ice machine field wiring connections may use either wire nuts or screw terminals.

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

N=115V

L2=208-230V

GROUND

SELF CONTAINED ICE MACHINE 208-230/3/60

GROUND

ICE MACHINE

SV1190

CONNECTIONS

TO SEPARATE

FUSE/BREAKER

GROUND

SELF CONTAINED ICE MACHINE 230/1/50

SV1258

ICE MACHINE

CONNECTIONS

TO SEPARATE

FUSE/BREAKER

SV1191

GROUND

ICE MACHINE

CONNECTIONS

GROUND

TO SEPARATE

FUSE/BREAKER.

DISCONNECT ALL

POLES.

For United Kingdom Only

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

• The wire coloured blue

• The wire coloured brown

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

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

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

Part No. 80-1100-3 2-9

Page 22

Installation Instructions Section 2

Remote Electrical Wiring Connections

Warning

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

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

Though wire nuts are sho wn in the drawings, the ice machine field wiring connections may use either wire nuts or screw terminals.

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

SINGLE CIRCUIT

REMOTE

CONDENSER

GROUND

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

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

GROUND

NOTE: FAN MOTOR IS 208-230V

TO SEPARATE

FUSE/BREAKER

GROUND

SINGLE CIRCUIT

REMOTE

CONDENSER

ICE

MACHINE

SV1199

ICE

MACHINE

SV1255

GROUND

N=115V OR L2=208-230V

TO SEPARATE

FUSE/BREAKER

GROUND

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

SINGLE CIRCUIT

REMOTE

CONDENSER

ICE

MACHINE

SV1256

GROUND

TO SEPARATE

FUSE/BREAKER

DISCONNECT ALL

NOTE: FAN MOTOR IS 220-240V

(220-240).

POLES.

GROUND

2-10

Part No. 80-1100-3

Page 23

Section 2 Installation Instructions

Water Supply and Drain Requirements

WATER SUPPLY

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

Important

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

WATER INLET LINES

Follow these guidelines to install water inlet lines:

• Do not connect the ice machine to a hot wate r supply. Be sure all hot water restrictors installed for other equipment are working. (Check valves on sink faucets, dishwashers, etc.)

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

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

• Insulate water inlet lines to prevent condensation.

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, and the pressure drop through the condenser and water valves (inlet and outlet) when using a cooling tower on an ice machine.

• Water entering the co ndenser must not exceed 90°F (32.2°C).

• Water flow th rough the condenser m ust not e xceed 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).

Part No. 80-1100-3 2-11

Page 24

Installation Instructions Section 2

WATER SUPPLY AND DRAIN LINE SIZING/CONNECTIONS

Caution

Plumbing must conform to state and local codes.

Location Water Temperature Water Pressure Ice Machine Fitting

Ice Making Water Inlet

Ice Making

Water Drain

Condenser Water Inlet

Condenser

Water Drain

Bin Drain --- ---

33°F (0.6°C) Min.

90°F (32.2°C) Max.

--- ---

33°F (0.6°C) Min.

90°F (32.2°C) Max.

--- ---

20 psi (137.9 kPA) Min.

80 psi (551.5 kPA) Ma x.

20 psi (137.9 kPA) Min.

150 psi (1034.2 kPA) Max.

3/8" Female Pipe Thread

1/2" Female Pipe Thread

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

All Others - 3/8" Female Pipe Thread

1/2" Female Pipe Thread

3/4" Female Pipe Thread

Tubing Size Up to Ice

Machine Fitting

3/8" (9.5 mm) minimum

inside diameter

1/2" (12.7 mm) minimum

inside diameter

1/2" (12.7 mm) minimum

inside diameter

3/4" (19.1 mm) minimum

inside diameter

2-12

SV1626

Figure 2-3. Typical Water Supply Drain Installation

Part No. 80-1100-3

Page 25

Section 2 Installation Instructions

Remote Condenser/Line Set Installation

Remote Single

Ice Machine

Q490 JC0495 RT-20-R404A Q690 JC0895

Q890 Q1090 JC1095 Q1390 JC1395 RL-20-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)

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.

Circuit

Condenser

Line Set*

RT-35-R404A RT-50-R404A

RL-35-R404A RL-50-R404A

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.

IMPORTANT

EPA CERTIFIED TECHNICIANS

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

30.5 m), add nameplate charge.

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

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

Figure 2-4. Typical Additional Refrigerant Label

If there is no additional label, the nameplate charge is sufficient for line set s up to 100' (30. 5 m). (See the chart below.)

WARNING

Potential Personal Injury Situation

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

of dealing with refrigerant charged equipment.

Ice Machine

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.)

Nameplate Charge

(Charge Shipped in Ice Machine)

Refrigerant to be Added for

50'-100' Line Sets

Maximum System Charge

(Never Exceed )

Part No. 80-1100-3 2-13

Page 26

Installation Instructions Section 2

GENERAL

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

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

Caution

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

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

GUIDELINES FOR ROUTING LINE SETS

First, cut a 2.5" (6.35 cm) circular hole in the wall or roof for tubing routing. The line set en d 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.

SV1204

DOWNWARD

HORIZONTAL

SPIRAL

Figure 2-5. Routing Line Sets

2-14

Part No. 80-1100-3

Page 27

Section 2 Installation Instructions

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 char ge 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).

Caution

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

Calculated Line Set Distance

The maximum distance is 150' (45.7 m). Line set rises, drops, ho rizontal runs (or combina tions 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 mak e 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 f eet below t he 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 distance to get t he total calculated 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

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

SV1196 SV1195 SV1194

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

Part No. 80-1100-3 2-15

Page 28

Installation Instructions Section 2

LENGTHENING OR REDUCING LINE SET LENGTHS

In most cases, b y routing the line set properly, shortening will not be necessary. When shortening or lengthening is required, do so bef ore con necting the lin e 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 a bo ut 5 oz (1 43 g) 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 refr ig eratio n oil to the thr e ad s on the quick disconnect couplers before connecting them to the condenser.

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

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

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.

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

TURN COUNTERCLOCKWISE TO OPEN

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

Liquid Line Discharge Line

10-12 ft lb.

(13.5-16.2 N•m)

35-45 ft lb.

(47.5-61.0 N•m)

6. Check all fittings for leaks.

RECEIVER SERVICE VALVE CAP (TURN

SV1603

COUNTERCLOCKWISE TO REMOVE)

Figure 2-9. Backseating the Receiver Service Valve

2-16

Part No. 80-1100-3

Page 29

Section 2 Installation Instructions

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 Manito woc remote condenser.

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

approval is f or full w arranty cov erage to

test the condenser in

Important

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

HEAD PRESSURE CONTROL VALVE

Any remote condenser connected to a Manitowoc QModel Ice Machine must have a head pressure control valve #836809 -3 (a v ailab le from Ma nitow oc 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 for use 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 amps 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 exceed internal volume and try

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

CONDENSER ∆T

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

REFRIGERANT CHARGE

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

Caution

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

Caution

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

Part No. 80-1100-3 2-17

QUICK CONNECT FITTINGS

The ice machine and line sets come with quick connect fittings. It is recommended th at matching q uic k connects (availab le through Manitow oc 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.

Page 30

Installation Instructions Section 2

NON-MANITOWOC MULTI-CIRCUIT CONDENSER SIZING CHART

Internal

Ice

Machine

Model

Refrigerant Heat of Rejection

Type Charge

Average

Btu/hr

Peak

Condenser

Volu m e ( c u ft)

Design

Pressure

Min Max Discharge Liquid

Q450 R-404A 6 lbs. 7,000 9,600 0.020 0.035 500 psig Q600 R-404A 8 lbs. 9,000 13,900 0.045 0.060

safe working

pressure

Quick Connect Stubs-

Male Ends

coupling

P/N

83-6035-3

coupling

P/N

83-6034-3

Head

Pressure

Control

Valve

Manitowoc

P/N

83-6809-3

Q800 R-404A 8 lbs. 12,400 19,500 0.045 0.060 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

SINGLE CIRCUIT REMOTE CONDENSER

36,000 50,000 0.130 0.170

DISCHARGE LINE

2,500 psig

burst

pressure

mounting flange P/N 83-6006-3

ELECTRICAL DISCONNECT

mounting flange P/N 83-6005-3

substitutes

LIQUID LINE

ELECTRICAL DISCONNECT

ICE MACHINE

ELECTRICAL SUPPLY

DISCHARGE REFRIGERANT LINE

BIN

36.00" (91.44 cm) DROP

LIQUID REFRIGERANT LINE

Figure 2-10. Typical Single Circuit Remote Condenser Installation

SV1615

2-18

Part No. 80-1100-3

Page 31

Section 2 Installation Instructions

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)?

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 Manito woc 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 to ggle 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).

Is there a separate drain for the water-cooled

condenser?

Is the water trough dr ain plug installed? (The d rain

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

Additional Checks for Remote Models

Has the receiver service valve been opened?

Does the remote condenser f an operate pro perly 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?

Part No. 80-1100-3 2-19

Page 32

Installation Instructions Section 2

THIS PAGE INTENTIONALLY LEFT BLANK

2-20

Part No. 80-1100-3

Page 33

Component Identification

Section 3

Ice Machine Operation

HARVEST VALVE

WATER DUMP VALVE

DRAIN HOSE

COMPRESSOR

DISTRIBUTION

TUBE

REMOTE COUPLINGS

ICE THICKNESS

PROBE

AIR CONDENSER

WATER

CONDENSER

EVAPORATOR

CONDENSER WATER REGULATING VALVE

WATER COOLED

HIGH PRESSURE CUTOUT/

MANUAL RESET

(When applicable)

MODEL

SV1604G

ICE/OFF/CLEAN

SWITCH

WATER

CURTAIN

WATER

TROUGH

WATER

PUMP

SV1605

BIN SWITCH

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

Part No. 80-1100-3 3-1

Page 34

Ice Machine Operation Section 3

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

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

FREEZE SEQUENCE

3. Prechill

The compressor is on for 30 seconds 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 free ze lock has been surpassed.

3-2

Figure 3-2. Freeze Sequence

(Typical Q450 Shown)

Continued on next page …

Part No. 80-1100-3

Page 35

Section 3 Ice Machine Operation

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” for details.) The harvest valve also opens at the beginning of the water purge to divert hot refrigerant gas into the evaporat or.

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.)

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 (step s 1 - 2) , pr ovided the 3 minute delay period is complete.

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

Shown)

Figure 3-3. Harvest Sequence (Typical Q450 Shown)

Part No. 80-1100-3 3-3

Page 36

Ice Machine Operation Section 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. The harvest valve and HPR solenoid valves remain on for 5 seconds during initial compressor start-up and then shut off.

FREEZE SEQUENCE

3. Prechill

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

4. Freeze

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.)

Figure 3-5. Freeze Sequence (Typical Q450 Shown)

Continued on next page …

3-4

Part No. 80-1100-3

Page 37

Section 3 Ice Machine Operation

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” 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 retu rn s th e ice machine to the freeze sequence (Step 3 - 4.)

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 curtain swings back to the operating position, the bin switch re-closes and the ice machine restarts (steps 1 - 2) provided the 3 minute delay period is complete.

Figure 3-7. Automatic Shut-Off (Typical Q450

Shown)

Figure 3-6. Harvest Sequence (Typical Q450 Shown)

Part No. 80-1100-3 3-5

Page 38

Ice Machine Operation Section 3

Operational Checks

GENERAL

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

To ensure proper operation, always follow the Operational Checks:

• when starting the ice machine for the first time

• after a prolonged out of service period

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

procedures are not covered by the warranty.

WATER LEVEL

The water level sensor is set to maintain the proper water level above the water pump housing. The water level is not adjustable.

If the water level is incorrect, check the water level probe for damage (probe bent, etc.). Repair or replace the probe as necessary.

ICE THICKNESS CHECK

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

ADJUSTING SCREW

SV1616

1/8” ICE BRIDGE THICKNESS

SV1208

Figure 3-9. Ice Thickness Check

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

3-6

Figure 3-8. Water Level Probe

Part No. 80-1100-3

Page 39

Section 3 Ice Machine Operation

HARVEST SEQUENCE WATER PURGE

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

Important

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

• The harvest sequence water purge 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.

CONTROL BOARD

WATER PURGE ADJUSTMENT

Figure 3-10. Water Purge Adjustment

SV1617

Part No. 80-1100-3 3-7

Page 40

Ice Machine Operation Section 3

THIS PAGE INTENTIONALLY LEFT BLANK

3-8

Part No. 80-1100-3

Page 41

Section 4 Maintenance

Section 4

Maintenance

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. The ice machine must be taken apart for cleanin g and sanitizing.

Caution

Use only Manitowoc approved Ice Machine Cleaner and Sanitizer for this application (Manitowoc Cleaner part number 94-0546-3 and Manitowoc Sanitizer part number 94-0565-3). It is a violation of Federal law to use these solutions in a manner inconsistent with their labeling. Read and understand all labels printed on bottles before use.

CLEANING PROCEDURE

Caution

Do not mix Cleaner and Sanitizer solutions together. It is a violation of Federal law to use these solutions in a manner inconsistent with their labeling.

Step 3 Remove all ice from the bin. Step 4 Place the toggle switch in the CLEAN position.

The water will flow through the water dump valve and down the drain. Wait until the water trough refills and water flows over the evaporator, then add the proper amount of ice machine cleaner.

Model Amount of Cleaner

Q200/Q280/Q322/Q370 3 ounces (90 ml)

Q422/Q450/Q600/Q800 5 ounces (150 ml)

Q1000/Q1300/Q1400/Q1800 9 ounces (265 ml)

Step 5 Wait until the clean cycle is complete (approximately 30 minutes) then place the toggle switch in the OFF position and disconnect power to the ice machine (and dispenser when used).

Warning

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

Step 6 Remove parts for cleaning and hand sanitizing.

Warning

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

Ice machine cleaner is used to remove lime scale and mineral deposits. Ice machine sanitizer disinfects and removes 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.

Caution

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

Step 2 Remove top cover. This will allow easiest access for adding cleaning and sanitizing solutions.

A. Remove the water curtain

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

• Slide the left pin out.

Water Curtain Removal

Part No. 80-1100-3 4-1

Page 42

Maintenance Section 4

B. Remove the ice thickness probe

• Compress the hinge pin on the top of the ice thickness probe.

COMPRESS HINGE PIN TO REMOVE

SV3135

Ice Thickness Probe Removal

• Pivot the ice thickness probe to disengage one pin then the other. The ice thickness probe can be cleaned and sanitized at this point without complete removal. If complete removal is desired, disconnect the ice thickness control wiring from the control board.

C. Remove the water distribution tube

• Disconnect the water hose from the distribution tube.

1. LIFT UP

2. SLIDE BACK

3. SLIDE TO RIGHT

DISTRIBUTION TUBE

THUMBSCREW

LOCATING PIN

SV1620

Water Distribution Tube Removal

• Loosen the two thumbscrews which secure the distribution tube.

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

Caution

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

Disassemble for cleaning/sanitizing.

• Twist both of the inner tube ends until the tabs line up with the keyways.

• Pull the inner tube ends outward.

INNER TUBE

KEYWAY

TAB

SV1211

Water Distribution Tube Disassembly

4-2

Part No. 80-1100-3

Page 43

Section 4 Maintenance

D. Remove the white vinyl water distribution

tubing

• Disconnect the hose from the water pump outlet.

• Disconnect the hose from the dump valve (the tubing pressure fits - pull tubing into evaporator compartment).

E. Remove the water pump

• Disconnect the water pump power cord.

POWER CORD

WATER PUMP

LOOSEN SCREWS

F. Remove the water level probe

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

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

SCREW

WATER LEVEL PROBE

WATER TROUGH

WIRE LEAD

ICE MACHINE SIDE PANEL

DO NOT SOAK

WATER PUMP

MOTOR IN

CLEANER OR

SANITIZER

SOLUTIONS

SV1618

Water Pump Removal

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

• Lift the pump and bracket assembly off the screws.

SV1621

Water Level Probe Removal

Step 7 Mix a solution of cleaner and warm water.

Depending upon the amount of mineral buildup, a larger quantity of solution may be required. Use the ratio in the table below to mix enough solution to thoroughly clean all parts.

Solution Type Water Mixed With

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

Step 8 Use 1/2 of the cleaner/water mixture to clean all components. The cleaner solution will foam when it contacts lime scale and mineral deposits; once the foaming stops use a soft-bristle nylo n brush, sponge or cloth (NOT a wire brush) to carefully clean the parts. Soak parts for 5 minutes (15 - 20 minutes for heavily scaled parts). Rinse all components with clean water.

Part No. 80-1100-3 4-3

Page 44

Maintenance Section 4

Step 9 While components are soaking, use 1/2 of the

cleaner/water solution to clean all foodzone surfaces of the ice machine and bin (or dispenser). Use a nylon brush or cloth to thoroughly clean the following ice machine areas:

• Side walls

• Base (bottom of the water trough)

• Interior of the water trough

• Evaporator cells and evaporator plastic parts including top, bottom, and sides

• Bin or dispenser

• Ice machine top cover

Remove water trough drain plug and rinse all areas thoroughly with clean water . Reinsta ll water trough drain plug.

Clean/sanitize top, bottom and sides of evaporator.

Step 12 Use 1/2 of the sanitizer/water solution to

sanitize all foodzone surfaces of the ice machine and bin (or dispenser). Use a cloth or sponge to liberally apply the solution. Wipe all surfaces twice to ensure complete coverage with sanitizer solution. When sanitizing, pay particular attention to the following areas:

• Side walls

• Base (bottom of the water trough)

• Interior of water trough

• Evaporator cells and evaporator plastic parts including top, bottom and sides

• Bin or dispenser

• Ice machine top cover

Do not rinse the sanitized areas. Remove the water trough drain plug and wipe with solution. When the sanitizer solution has drained from the trough , reinstall the water trough drain plug.

Step 13 Replace all removed components. Step 14 Reapply power to the ice machine and place

the toggle switch in the CLEAN position.

Wipe bottom lip of evaporator with a sponge or cloth

soaked in cleaner

and then sanitizer solution.

Step 10 Mix a solution of sanitizer and warm water.

Solution Type Water Mixed With

Sanitizer 6 gal. (23 l) 4 oz (120 ml) sanitizer

Step 11 Use 1/2 of the sa nit izer /wa te r so lut ion to sanitize all removed components. Use a cloth or sponge to liberally apply the solution to all surfaces of the removed parts or soak the removed parts in the sanitizer/water solution. Do not rinse parts after sanitizing.

Step 15 Wait about two minutes or until water starts to flow over the evaporator. Add the proper amount of Manitowoc Ice Machine Sanitizer to the water trough by pouring between the water curtain and evaporator.

Model Amount of Sanitizer

Q200 Q280 Q322 Q370

Q422 Q450 Q600 Q800

Q1000

Q1300 Q1600 Q1800 8.75 ounces (258 ml)

3 ounces (90 ml)

4-4

Part No. 80-1100-3

Page 45

Section 4 Maintenance

Step 16 The ice machine will stop after the sanitize

cycle (approximately 30 minutes). Place the toggle switch in the OFF position and disconnect power to the ice machine.

Warning

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

Step 17 Repeat step 6 for hand sanitizing. Step 18 Mix a solution of sanitizer and warm water.

Solution Type Water Mixed With

Sanitizer 6 gal. (23 l) 4 oz (120 ml) sanitizer

Step 19 Use 1/2 of the sanitizer/water solution to sanitize all removed components. Use a cloth or sponge to liberally apply the solution to all surfaces of the removed parts or soak the removed parts in the sanitizer/water solution. Do not rinse parts after sanitizing.

Step 20 Use 1/2 of the sanitizer/water solution to sanitize all foodzone surfaces of the ice machine and bin (or dispenser). Use a cloth or sponge to liberally apply the solution. When sanitizing, pay particular attention to the following areas:

• Side walls

• Base (bottom of the water trough)

• Interior of water trough

• Evaporator cells and evaporator plastic parts including top, bottom and sides

• Bin or dispenser

• Ice machine top cover

Do not rinse the sanitized areas. Remove the water trough drain plug and wipe with solution. When the sanitizer solution has drained from the trough, reinstall the water trough drain plug.

Step 21 Install the removed parts, restore power and place the toggle switch in the ICE position.

Part No. 80-1100-3 4-5

Page 46

Maintenance Section 4

ADDITIONAL COMPONENT REMOVAL

The following components may be removed for easier access in some installations or they may need to be removed and cleaned to correct an operational problem.

Water Inlet Valve

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

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

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

Follow the procedure below to remove the water inlet valve.

Water Dump Valve

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

1. Set the toggle switch to ICE.

2. Verify the water trough fills with water at the beginning of the freeze cycle.

3. While the ice machine is in the freeze mode, check the water trough to determine if the dump valve is leaking. If there is no or little water in the water trough (during the freeze cycle) the dump valve is leaking.

A. If the dump valve is leaking, remove,

disassemble and clean it.

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

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

Warning

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

1. Remove the 1/4” hex head screws.

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

FILTER ACCESS SCREWS

FILTER SCREEN LOCATION

WATER INLET VALVE

Follow the procedure below to remove the dump valve.

Warning

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

1. Leaving the wires attached, twist coil and rotate it counter-clockwise1/4 turn.

2. Lift the coil assembly off the valve body.

3. Remove the spring, plunger, and nylon 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 4.

NOTE: During cleaning, do not stretch or damage the spring.

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

5. Twist the valve body to remove from mounting bracket.

4-6

Part No. 80-1100-3

Page 47

Section 4 Maintenance

COIL

SPRING

NYLON GASKET

Dump Valve Disassembly

PLUNGER

DIAPHRAM

MOUNTING BRACKET

VALVE BODY

Part No. 80-1100-3 4-7

Page 48

Maintenance Section 4

Ice Machine Inspection

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

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

Exterior Cleaning

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

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

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

Cleaning the Condenser

GENERAL

Warning

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

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

Warning

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

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

2. Clean the outside of the condenser with a soft brush or a vacuum with a brush attachment. Be careful not to bend the condenser fins.

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

A. Blow compressed air through the condenser fins

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

B. Use a commercial condenser coil cleaner.

Follow the directions and cautions supplied with the cleaner.

4-8

Part No. 80-1100-3

Page 49

Section 4 Maintenance

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

“COMB” DOWN

ONLY

CONDENSER

FIN

COMBS

SV1515

Straighten Bent Condenser Fins

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

Caution

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

Water-Cooled Condenser and Water Regulating Valve

Symptoms of restrictions in the condenser water circu it include:

• Low ice production

• High water consumption

• High operating temperatures

• High operating 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.

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

AlphaSan

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

slowly releases silver ions via an ion

helps prevent bio-film build up it

has no adverse effect on the

Part No. 80-1100-3 4-9

Page 50

Maintenance Section 4

Removal from Service/Winterization

GENERAL

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

Caution

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

Follow the applicable procedure below.

SELF-CONTAINED AIR-COOLED ICE MACHINES

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

2. Turn off the water supply.

3. Remove the water from the water trough.

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

5. Energize the ice machine and wait one minute for the water inlet valve to open.

6. 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.

7. 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.

SV1624

Pry Open the Water Regulating Valve

4-10

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.”

Part No. 80-1100-3

Page 51

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.

TO DISTRIBUTION TUBE

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 w ater inlet v alve to a six-m inute on time. Regardless of the water level probe input, the control board automatically shuts off the water inlet valv e if it remains on for 6 continuous minutes.

WATER INLET VALVE

TO DRAIN

WATER PUMP

WATER DUMP VALVE

SV1677

Figure 5-1. Water Flow Ov er the Evaporator

Part No. 80-1100-3 5-1

Page 52

Water System Ice Making Sequence of Operation Section 5

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.

TO DISTRIBUTION TUBE

WATER DUMP VALVE

AUTOMATIC SHUT-OFF

There is no water flow during an au tomatic shut-off.

WATER INLET VALVE

WATER PUMP

5-2

TO DRAIN

SV1677

Figure 5-2. Water Flow Down the Drain

Part No. 80-1100-3

Page 53

Section 6

Electrical System

Energized Parts Charts

SELF-CONTAINED AIR- AND WATER-COOLED MODELS

Control Board Relays Contactor

Ice Making

Sequence Of

Operation

START-UP 1

1. Water Purge

2. Refrigeration System

Start-Up FREEZE

SEQUENCE

3. Pre-Chill

4. Freeze On Off Off On On

HARVEST

SEQUENCE

5. Water Purge

6. Harvest Off Off On Off On On

7. AUTOMATIC SHUT-OFF

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:

1 2 3 4 5 5A 5B

Water Pump

On Off On On Off Off Off 45 Seconds

Off On On Off On On

Off

Off Off Off Off Off Off Off

Water Fill

Val ve

May cycle On/ Off during first

45 sec.

-----------

Cycles On,

then Off 1 more time

Locked Out

After Six

Minutes

30 sec. Off,

15 sec. On

Harvest

Val ve(s )

Off Off On On

On On On On

Water Dump Val v e

Contactor

Coil

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).

Com-

pressor

Condenser

Fan Motor

May Cycle

On/Off

May Cycle

On/Off

May Cycle

On/Off

May Cycle

On/Off

May Cycle

On/Off

Length

Of Time

5 Seconds

30 Seconds

Until 7 sec.

water contact

with ice

thickness probe

Factory-set at

45 Seconds

Bin switch

activation

Until bin switch

re-closes

Part No. 80-1100-3 6-1

Page 54

Electrical System Section 6

REMOTE MODELS

Control Board Relays Contactor

1 2 3 4 5 5A 5B

Ice Making

Sequence Of

Operation

START-UP

1. Water Purge

2. Refrigeration System

Start-Up FREEZE

SEQUENCE

3. Pre-Chill

4. Freeze On Off Off On On On

HARVEST

SEQUENCE

5. Water Purge

6. Harvest Off Off On Off On On On

7. AU TOMATIC

SHUT-OFF

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

Water

Pump

On Off On On

Off On On Off On On On 5 Seconds

Off

Off Off Off Off Off Off Off

Water Fill

Val ve

May cycle On/ Off during first

45 sec.

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

Cycles On,

then Off 1 more time

Locked Out

After Six

Minutes

30 sec. Off,

15 sec. On

Auto Shut-Off

a. Harvest

Valve(s)

b. HPR

Solenoid

Off Off On On On 30 Seconds

On On On On On

Water Dump

Val ve

FREEZE SEQUENCE

Contactor

Coil

b. Liquid

Line

Solenoid

Off Off Off 45 Seconds

Com-

pressor

Condenser

Fan Motor

Length

Of Time

Until 7 sec.

contact with

ice thickness

Factory-set

Seconds

Bin switch

activation

Until bin

switch re-

water

probe

at 45

closes

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:

6-2

• 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).

Part No. 80-1100-3

Page 55

Section 6 Electrical System

Wiring Diagram Sequence of Operation

SELF-CONTAINED MODELS

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

1. WATER PURGE

Before the compressor starts, the water pump and water dump solenoid are energized for 45 seconds to purge old water from the ice machine. This ensures that the icemaking 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).

TB35

TB32

HIGH PRES CUTOUT

ICE THICKNESS PROBE

WATER LEVEL PROBE

NOT USED

CONTACTOR CONTACTS

(42)

TB33

(64)

(66)

(51)

(55)

(62)

(63)

BIN SWITCH

*OVERLOAD

(48)

(85) (86)

(52)

FAN CYCLE CONTROL

SEE SERIAL PLATE FOR VOLTAGE

(22)

(80)

(81)

TERMINATES AT PIN CONNECTION

CONTACTOR COIL

VIEW FOR WIRING

(57)

TB31

TB37

(21)

WATER VALVE

(77)

HARVEST SOLENOID

(76)

DUMP SOLENOID

(98)

(59)

(73)

(56)

(45)

FAN MOTOR (AIR COOLED ONLY)

(20)

(61)

(60)

TRANS.

FUSE (7A)

LOW D.C.

VOLTAGE

PLUG

(65)

(67)

(66)

COMPRESSOR

(68)

(69)

(62)

(53)

RUN CAPACITOR**

(58)

CLEAN LIGHT

WATER LEVEL

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

TOGGLE SWITCH

ICE

INTERNAL WORKING

OFF

VIEW

CLEAN

(49)

RUN CAPACITOR

(47)

(46) (50)

TB34

PTCR

WATER PUMP

L2 (N)

(75)

TB30

(99)

TB30

(74)

TB30

SV1646-1

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

Part No. 80-1100-3 6-3

Page 56

Electrical System Section 6

2. REFRIGERATION SYSTEM START-UP

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

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

TB35

SEE SERIAL PLATE FOR VOLTAGE

TB32

HIGH PRES CUTOUT

ICE THICKNESS PROBE

WATER LEVEL PROBE

NOT USED

CONTACTOR CONTACTS

(42)

TB33

(64)

(66)

(51)

(55)

BIN SWITCH

(52)

(62)

(63)

(65)

*OVERLOAD

(48)

FAN CYCLE CONTROL

(85) (86)

TRANS.

FUSE (7A)

LOW D.C.

VOLTAGE

PLUG

(67)

(66)

COMPRESSOR

(68)

(69)

(62)

(53)

RUN CAPACITOR**

(20)

(61)

(60)

(57)

(58)

CLEAN LIGHT

WATER LEVEL

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

TOGGLE SWITCH

ICE

INTERNAL WORKING

OFF

VIEW

CLEAN

(49)

RUN CAPACITOR

(47)

(46) (50)

TB34

PTCR

(21)

WATER VALVE

(77)

HARVEST SOLENOID

(76)

DUMP SOLENOID

(98)

TB31

TB37

(59)

(73)

(56)

(45)

FAN MOTOR (AIR COOLED ONLY)

(22)

(80)

(81)

WATER PUMP

TERMINATES AT PIN CONNECTION

CONTACTOR COIL

VIEW FOR WIRING

Figure 6-2. Self-Contained — Refrigeration System Start-Up

(75)

(99)

(74)

SV1646-2

L2 (N)

TB30

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

6-4

Part No. 80-1100-3

Page 57

Section 6 Electrical System

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.

TB35

TB32

HIGH PRES CUTOUT

ICE THICKNESS PROBE

WATER LEVEL PROBE

NOT USED

CONTACTOR CONTACTS

(42)

TB33

(64)

(66)

(51)

(55)

BIN SWITCH

(52)

(62)

(63)

(65)

*OVERLOAD

(48)

FAN CYCLE CONTROL

(85) (86)

TRANS.

FUSE (7A)

LOW D.C.

VOLTAGE

PLUG

(67)

(66)

COMPRESSOR

RUN CAPACITOR**

(53)

(20)

(61)

(60)

(58)

CLEAN LIGHT

WATER LEVEL

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

(68)

ICE

(69)

OFF

CLEAN

(62)

(49)

RUN CAPACITOR

(47)

TB34

SEE SERIAL PLATE FOR VOLTAGE

(21)

WATER VALVE

(77)

HARVEST SOLENOID

(76)

DUMP SOLENOID

(57)

TOGGLE SWITCH

INTERNAL WORKING VIEW

(46) (50)

PTCR

(98)

TB31

TB37

(59)

(73)

(56)

(45)

FAN MOTOR (AIR COOLED ONLY)

TERMINATES AT PIN CONNECTION

CONTACTOR COIL

VIEW FOR WIRING

(22)

(80)

(81)

WATER PUMP

(99)

(74)

L2 (N)

(75)

SV1646-3

TB30

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

Part No. 80-1100-3 6-5

Page 58

Electrical System Section 6

4. FREEZE

The water pump starts after the 30second 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.

TB35

TB32

HIGH PRES CUTOUT

ICE THICKNESS PROBE

WATER LEVEL PROBE

NOT USED

CONTACTOR CONTACTS

(42)

TB33

(64)

(66)

(51)

(55)

(62)

(63)

BIN SWITCH

*OVERLOAD

(48)

(85) (86)

(52)

FAN CYCLE CONTROL

SEE SERIAL PLATE FOR VOLTAGE

(20)

(61)

(60)

TRANS.

FUSE (7A)

LOW D.C.

VOLTAGE

PLUG

(65)

(66)

(67)

COMPRESSOR

(53)

RUN CAPACITOR**

(68)

(69)

(62)

(58)

CLEAN LIGHT

WATER LEVEL

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

TOGGLE SWITCH

ICE

OFF

CLEAN

(49)

RUN CAPACITOR

(47)

(46) (50)

TB34

PTCR

(21)

WATER VALVE

(77)

HARVEST SOLENOID

(76)

DUMP SOLENOID

(57)

INTERNAL WORKING VIEW

(98)

TB31

TB37

(59)

(73)

(56)

(45)

FAN MOTOR (AIR COOLED ONLY)

(22)

(80)

(81)

TERMINATES AT PIN CONNECTION

CONTACTOR COIL

VIEW FOR WIRING

WATER PUMP

(99)

(74)

L2 (N)

(75)

TB30

SV1646-4

TB30

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

6-6

Part No. 80-1100-3

Page 59

Section 6 Electrical System

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.

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.

TB35

TB32

HIGH PRES CUTOUT

ICE THICKNESS PROBE

WATER LEVEL PROBE

NOT USED

CONTACTOR CONTACTS

(42)

TB33

(64)

(66)

(51)

(52)

(55)

(62)

(63)

BIN SWITCH

*OVERLOAD

(48)

(85) (86)

FAN CYCLE CONTROL

SEE SERIAL PLATE FOR VOLTAGE

(20)

(61)

(60)

TRANS.

FUSE (7A)

LOW D.C.

VOLTAGE

PLUG

(65)

(67)

(66)

COMPRESSOR

(53)

RUN CAPACITOR**

(68)

(69)

(62)

(58)

CLEAN LIGHT

WATER LEVEL

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

TOGGLE SWITCH

ICE

OFF

CLEAN

(49)

RUN CAPACITOR

(47)

(46) (50)

TB34

PTCR

(21)

WATER VALVE

(77)

HARVEST SOLENOID

(76)

DUMP SOLENOID

(57)

INTERNAL WORKING VIEW

(98)

TB31

TB37

(59)

(73)

(56)

(45)

FAN MOTOR (AIR COOLED ONLY)

(22)

(80)

(81)

TERMINATES AT PIN CONNECTION

CONTACTOR COIL

VIEW FOR WIRING

WATER PUMP

(75)

(99)

(74)

SV1646-5

L2 (N)

TB30

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

Part No. 80-1100-3 6-7

Page 60

Electrical System Section 6

6. HARVEST

The harvest valve(s) remains open, allowing refrigerant gas to warm the evaporator. This causes the cubes to slide, as a sheet, off the evaporator and into the storage bin.

The 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).

TB35

TB32

HIGH PRES CUTOUT

ICE THICKNESS PROBE

WATER LEVEL PROBE

NOT USED

CONTACTOR CONTACTS

(42)

TB33

(64)

(66)

(51)

(55)

(62)

(63)

BIN SWITCH

*OVERLOAD

(48)

(85) (86)

(52)

FAN CYCLE CONTROL

SEE SERIAL PLATE FOR VOLTAGE

(20)

(61)

(60)

TRANS.

FUSE (7A)

LOW D.C.

VOLTAGE

PLUG

(65)

(66)

(67)

COMPRESSOR

(53)

RUN CAPACITOR**

(68)

(69)

(62)

(58)

CLEAN LIGHT

WATER LEVEL

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

TOGGLE SWITCH

ICE

OFF

CLEAN

(49)

RUN CAPACITOR

(47)

(46) (50)

TB34

PTCR

(21)

WATER VALVE

(77)

HARVEST SOLENOID

(76)

DUMP SOLENOID

(57)

INTERNAL WORKING VIEW

(98)

TB31

TB37

(59)

(73)

(56)

(45)

FAN MOTOR (AIR COOLED ONLY)

(22)

(80)

(81)

TERMINATES AT PIN CONNECTION

CONTACTOR COIL

VIEW FOR WIRING

WATER PUMP

(75)

(99)

(74)

SV1646-6

L2 (N)

TB30

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

6-8

Part No. 80-1100-3

Page 61

Section 6 Electrical System

Automatic Shut-Off

7. AUTOMATIC SHUT-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.

TB35

TB32

HIGH PRES CUTOUT

ICE THICKNESS PROBE

WATER LEVEL PROBE

NOT USED

CONTACTOR CONTACTS

(42)

TB33

(64)

(66)

(51)

(52)

(55)

(62)

(63)

BIN SWITCH

*OVERLOAD

(48)

(85)

FAN CYCLE CONTROL

(61)

(60)

TRANS.

FUSE (7A)

LOW D.C.

VOLTAGE

PLUG

(65)

(67)

(66)

COMPRESSOR

(86)

(53)

RUN CAPACITOR**

CLEAN LIGHT

WATER LEVEL

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

(68)

ICE

(69)

OFF

CLEAN

(62)

(49)

(47)

TB34

SEE SERIAL PLATE FOR VOLTAGE

(20)

(58)

TOGGLE SWITCH

RUN CAPACITOR

(46) (50)

PTCR

(21)

WATER VALVE

(77)

HARVEST SOLENOID

(76)

DUMP SOLENOID

(57)

INTERNAL WORKING VIEW

(98)

TB31

TB37

(59)

(73)

(56)

(45)

FAN MOTOR (AIR COOLED ONLY)

TERMINATES AT PIN CONNECTION

(22)

(80)

(81)

WATER PUMP

CONTACTOR COIL

VIEW FOR WIRING

L2 (N)

(75)

(99)

(74)

SV1646-7

TB30

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

Part No. 80-1100-3 6-9

Page 62

Electrical System Section 6

REMOTE MODELS

Initial Start-Up Or Start-Up After Automatic Shut-Off

1. WATER PURGE

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).

TB35

HIGH PRES CUTOUT

ICE THICKNESS PROBE

WATER LEVEL PROBE

(42)

TB32

CONTACTOR CONTACTS

TB33

NOT USED

(64)

(66)

(51)

(55)

BIN SWITCH

*OVERLOAD

(48)

(52)

(62)

(63)

TERMINATES AT

PIN CONNECTION

(F1)

SEE SERIAL PLATE FOR VOLTAGE

(20)

HPR

(61)

(60)

TRANS.

FUSE (7A)

LOW D.C.

VOLTAGE PLUG

(65)

(67)

(66)

COMPRESSOR

(53)

(68)

ICE

(69)

OFF

CLEAN

(62)

(49)

(47)

TB34

CLEAN LIGHT

WATER LEVEL

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

FAN MOTOR

SOLENOID

(77)

HARVEST SOLENOID

DUMP SOLENOID

(57)

TB31

(58)

TOGGLE SWITCH

INTERNAL WORKING VIEW

RUN CAPACITOR

(46)

REMOTE

PTCR

TB37

(59)

(73)

(56)

(45)

(76)

(98)

REMOTE CONDENSER

(22)(21)

WATER VALVE

(81)

WATER PUMP

(83)

CONTACTOR COIL

VIEW FOR WIRING

(50)

(79)(78)

(80)

(99)

LIQUID LINE SOLENOID

(F2)

L2 (N)

(75)

TB30

(82)

(74)

TB30

SV1648-1

RUN CAPACITOR

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

6-10

Part No. 80-1100-3

Page 63

Section 6 Electrical System

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.)

TB35

HIGH PRES CUTOUT

ICE THICKNESS PROBE

WATER LEVEL PROBE

(42)

TB32

CONTACTOR CONTACTS

TB33

NOT USED

(64)

(66)

(51)

(55)

BIN SWITCH

*OVERLOAD

(48)

(52)

(F1)

(62)

(63)

(65)

TERMINATES AT

PIN CONNECTION

TRANS.

FUSE (7A)

LOW D.C. VOLTAGE PLUG

(67)

(66)

COMPRESSOR

SEE SERIAL PLATE FOR VOLTAGE

(20)

HPR

(61)

(60)

CLEAN LIGHT

WATER LEVEL

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

(68)

ICE

(69)

OFF

CLEAN

(62)

(49)

(47)

(53)

TB34

FAN MOTOR

RUN CAPACITOR

SOLENOID

(77)

HARVEST SOLENOID

DUMP SOLENOID

(57)

TB31

(58)

TOGGLE SWITCH

INTERNAL WORKING VIEW

RUN CAPACITOR

REMOTE

(46)

PTCR

TB37

(59)

(73)

(56)

(45)

(76)

(98)

REMOTE CONDENSER

WATER VALVE

(81)

WATER PUMP

(83)

CONTACTOR COIL

VIEW FOR WIRING

(50)

(22)(21)

(79)(78)

(80)

LIQUID LINE SOLENOID

(F2)

(99)

(82)

(74)

L2 (N)

(75)

SV1648-2

TB30

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

Part No. 80-1100-3 6-11

Page 64

Electrical System Section 6

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.

TB35

HIGH PRES CUTOUT

ICE THICKNESS PROBE

WATER LEVEL PROBE

(42)

TB32

CONTACTOR CONTACTS

TB33

NOT USED

(64)

(66)

(51)

(55)

BIN SWITCH

*OVERLOAD

(48)

(52)

(62)

(63)

TERMINATES AT

PIN CONNECTION

(F1)

SEE SERIAL PLATE FOR VOLTAGE

(20)

HPR

(61)

(60)

TRANS.

FUSE (7A)

LOW D.C.

VOLTAGE PLUG

(65)

(67)

(66)

COMPRESSOR

(53)

(68)

(69)

(62)

ICE

OFF

CLEAN

(49)

(47)

TB34

RUN CAPACITOR

CLEAN LIGHT

WATER LEVEL

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

FAN MOTOR

SOLENOID

(77)

HARVEST SOLENOID

DUMP SOLENOID

(57)

TB31

(58)

TOGGLE SWITCH

INTERNAL WORKING VIEW

RUN CAPACITOR

(46)

REMOTE

PTCR

TB37

(59)

(73)

(56)

(45)

(76)

(98)

REMOTE CONDENSER

(22)(21)

WATER VALVE

(81)

WATER PUMP

(83)

CONTACTOR COIL

VIEW FOR WIRING

(50)

(79)(78)

(80)

(99)

LIQUID LINE SOLENOID

(F2)

(75)

(82)

(74)

SV1648-3

L2 (N)

TB30

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

6-12

Part No. 80-1100-3

Page 65

Section 6 Electrical System

4. FREEZE

The water pump starts after the 30second 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.

TB35

HIGH PRES CUTOUT

ICE THICKNESS PROBE

WATER LEVEL PROBE

(42)

TB32

CONTACTOR CONTACTS

TB33

NOT USED

(64)

(66)

(51)

(55)

BIN SWITCH

*OVERLOAD

(48)

(52)

(F1)

(62)

(63)

(65)

TERMINATES AT

PIN CONNECTION

TRANS.

FUSE (7A)

LOW D.C. VOLTAGE PLUG

(67)

(66)

COMPRESSOR

SEE SERIAL PLATE FOR VOLTAGE

(20)

HPR

(61)

(60)

CLEAN LIGHT

WATER LEVEL

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

(68)

ICE

(69)

OFF

CLEAN

(62)

(49)

(47)

(53)

TB34

FAN MOTOR

RUN CAPACITOR

SOLENOID

(77)

HARVEST SOLENOID

DUMP SOLENOID

(57)

TB31

(58)

TOGGLE SWITCH

INTERNAL WORKING VIEW

RUN CAPACITOR

REMOTE

(46)

PTCR

TB37

(59)

(73)

(56)

(45)

(76)

(98)

REMOTE CONDENSER

WATER VALVE

(81)

WATER PUMP

(83)

CONTACTOR COIL

VIEW FOR WIRING

(50)

(22)(21)

(79)(78)

(80)

LIQUID LINE SOLENOID

(F2)

(75)

(99)

(82)

(74)

SV1648-4

L2 (N)

TB30

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

Part No. 80-1100-3 6-13

Page 66

Electrical System Section 6

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.

TB35

HIGH PRES CUTOUT

ICE THICKNESS PROBE

WATER LEVEL PROBE

(42)

TB32

CONTACTOR CONTACTS

TB33

NOT USED

(64)

(66)

(51)

(55)

BIN SWITCH

*OVERLOAD

(48)

(52)

(62)

(63)

TERMINATES AT

PIN CONNECTION

(F1)

SEE SERIAL PLATE FOR VOLTAGE

(20)

HPR

(61)

(60)

TRANS.

FUSE (7A)

LOW D.C.

VOLTAGE PLUG

(65)

(67)

(66)

COMPRESSOR

(53)

(68)

(69)

(62)

ICE

OFF

CLEAN

(49)

(47)

TB34

RUN CAPACITOR

CLEAN LIGHT

WATER LEVEL

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

FAN MOTOR

SOLENOID

(77)

HARVEST SOLENOID

DUMP SOLENOID

(57)

TB31

(58)

TOGGLE SWITCH

INTERNAL WORKING VIEW

RUN CAPACITOR

(46)

REMOTE

PTCR

TB37

(59)

(73)

(56)

(45)

(76)

(98)

REMOTE CONDENSER

(22)(21)

WATER VALVE

(81)

WATER PUMP

(83)

CONTACTOR COIL

VIEW FOR WIRING

(50)

(79)(78)

(80)

(99)

LIQUID LINE SOLENOID

(F2)

(75)

(82)

(74)

SV1648-5

L2 (N)

TB30

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

6-14

Part No. 80-1100-3

Page 67

Section 6 Electrical System

6. HARVEST

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

TB35

HIGH PRES CUTOUT

ICE THICKNESS PROBE

WATER LEVEL PROBE

(42)

TB32

CONTACTOR CONTACTS

TB33

NOT USED

(64)

(66)

(51)

(55)

BIN SWITCH

*OVERLOAD

(48)

(52)

(F1)

(62)

(63)

(65)

TERMINATES AT

PIN CONNECTION

TRANS.

FUSE (7A)

LOW D.C. VOLTAGE PLUG

(67)

(66)

COMPRESSOR

SEE SERIAL PLATE FOR VOLTAGE

(20)

HPR

(61)

(60)

CLEAN LIGHT

WATER LEVEL

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

(68)

ICE

(69)

OFF

CLEAN

(62)

(49)

(47)

(53)

TB34

FAN MOTOR

SOLENOID

(77)

HARVEST SOLENOID

DUMP SOLENOID

(57)

TB31

(58)

TOGGLE SWITCH

INTERNAL WORKING VIEW

RUN CAPACITOR

REMOTE

(46)

PTCR

TB37

(59)

(73)

(56)

(45)

(76)

(98)

REMOTE CONDENSER

WATER VALVE

(78)

(81)

WATER PUMP

(83)

CONTACTOR COIL

VIEW FOR WIRING

(50)

(22)(21)

(79)

(80)

LIQUID LINE SOLENOID

(F2)

L2 (N)

(75)

TB30

(99)

TB30

(82)

(74)

TB30

SV1648-6

RUN CAPACITOR

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

Part No. 80-1100-3 6-15

Page 68

Electrical System Section 6

Automatic Shut-Off

7. AUTOMATIC SHUT-OFF

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

TB35

HIGH PRES CUTOUT

ICE THICKNESS PROBE

WATER LEVEL PROBE

(42)

TB32

CONTACTOR CONTACTS

TB33

NOT USED

(64)

(66)

(51)

(55)

BIN SWITCH

*OVERLOAD

(48)

(52)

(62)

(63)

TERMINATES AT

PIN CONNECTION

(F1)

SEE SERIAL PLATE FOR VOLTAGE

(20)

HPR

(61)

(60)

TRANS.

FUSE (7A)

LOW D.C.

VOLTAGE PLUG

(65)

(67)

(66)

COMPRESSOR

(53)

(68)

(69)

(62)

ICE

OFF

CLEAN

(49)

(47)

TB34

RUN CAPACITOR

CLEAN LIGHT

WATER LEVEL

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

FAN MOTOR

SOLENOID

(77)

HARVEST SOLENOID

DUMP SOLENOID

(57)

TB31

(58)

TOGGLE SWITCH

INTERNAL WORKING VIEW

RUN CAPACITOR

(46)

REMOTE

PTCR

TB37

(59)

(73)

(56)

(45)

(76)

(98)

REMOTE CONDENSER

(22)(21)

WATER VALVE

(81)

WATER PUMP

(83)

CONTACTOR COIL

VIEW FOR WIRING

(50)

(79)(78)

(80)

(99)

LIQUID LINE SOLENOID

(F2)

(75)

(82)

(74)

SV1648-7

L2 (N)

TB30

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

6-16

Part No. 80-1100-3

Page 69

Section 6 Electrical System

Wiring Diagrams

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

Warning

Always disconnect power before working on electrical circuitry.

WIRING DIAGRAM LEGEND

The following symbols are used on all of the wiring diagrams:

* Internal Compressor Overload

(Some models have external compressor overloads)

** Fan Motor Run Capacitor

(Some models do not incorporate fan motor run capacitor)

TB Terminal Board Connection

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

( ) Wire Number Designation

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

—>>— Multi-Pin Connection

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

Part No. 80-1100-3 6-17

Page 70

Electrical System Section 6

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

TB35

HIGH PRES CUTOUT

ICE THICKNESS PROBE

(42)

TB32

CONTACTOR CONTACTS

TB33

CAUTION: DISCONNECT POWER BEFORE WORKING

WATER LEVEL PROBE

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

(64)

(66)

(51)

(48)

(55)

NOT USED

BIN SWITCH

(52)

(62)

(63)

*OVERLOAD

(85) (86)

FAN CYCLE CONTROL

TRANS.

(65)

FUSE (7A)

LOW D.C. VOLTAGE PLUG

(67)

(66)

COMPRESSOR

TOGGLE SWITCH

(68)

(69)

(62)

(49)

(47)

(53)

TB34

(20)

(61)

(60)

(57)

TB31

(58)

TB37

CLEAN LIGHT

WATER LEVEL LIGHT

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

ICE

INTERNAL WORKING

OFF

VIEW

CLEAN

PTCR

FAN MOTOR (AIR COOLED ONLY)

RUN CAPACITOR**

SEE SERIAL PLATE FOR VOLTAGE

(21) (22)

WATER VALVE

(77)

HARVEST SOLENOID

(59)

(56)

(76)

DUMP SOLENOID

(98)

(73)

TERMINATES AT PIN CONNECTION

(80)

(81)

WATER PUMP

CONTACTOR COIL

VIEW FOR WIRING

(50)

(99)

(74)

(75)

L2 (N)

TB3

SV1654

6-18

Part No. 80-1100-3

Page 71

Section 6 Electrical System

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

SEE SERIAL PLATE FOR VOLTAGE

HIGH PRES CUTOUT

(88)

(42)

CAUTION: DISCONNECT POWER BEFORE WORKING

(89)

ICE THICKNESS PROBE

WATER LEVEL PROBE

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

(55)

NOT USED

(64)

BIN SWITCH

(66)

(62)

(63)

(65)

TRANS.

FUSE (7A)

LOW D.C. VOLTAGE PLUG

(67)

(66)

(68)

(69)

(62)

(20)

(61)

(60)

(57)

(58)

CLEAN LIGHT

WATER LEVEL

BIN SWITCH LIGHT

HARVEST LIGHT/

SAFETY LIMIT CODE LIGHT

VIEW FOR

ICE

OFF

CLEAN

WIRING

(21)

(77)

HARVEST SOLENOID

(59)

(56)

WATER

VALVE

(76)

DUMP SOLENOID

(98)

(22)

(81)

WATER PUMP

TERMINATES AT PIN CONNECTION

(74)

(80)

(99)

CONTACTOR COIL

L2 (N)

(75)

CONTACTOR

CONTACTS

OVERLOAD INTERNAL

{230V 50/60 HZ}

(51)

(48)

(46)

POTENTIAL

RELAY

(86)(85)

FAN CYCLE CONTROL

COMPRESSOR

(45)

(47)

(49)

(44)

START CAPACITOR

RUN CAPACITOR**

FAN MOTOR (AIR COOLED ONLY)

COMPRESSOR TERMINAL LAYOUT VIEWED FROM END

OF COMPRESSOR

(50)

SV3018

Part No. 80-1100-3 6-19

Page 72

Electrical System Section 6

Q320 - SELF CONTAINED - 1 PHASE WITHOUT TERMINAL BOARD

CAUTION: DISCONNECT POWER BEFORE WORKING

(55)

WATER LEVEL PROBE

NOT USED

BIN SWITCH

(64)

(48)

(51)

(42)

HIGH PRES CUTOUT

(88)

CONTACTOR CONTACTS

(89)

ICE THICKNESS PROBE

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

(61)

TRANS.

FUSE (7A)

LOW D.C. VOLTAGE PLUG

(62)

(63)

(65)

*OVERLOAD

(85)

TOGGLE SWITCH

(67)

(66)

COMPRESSOR

(86)

(68) (69)

(62)

(20)

(60)

(57)

(58)

CLEAN LIGHT

WATER LEVEL

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

ICE

OFF

CLEAN

(49)

(47)

FAN MOTOR (AIR COOLED ONLY)

SEE SERIAL PLATE FOR VOLTAGE

(21)

WATER VALVE

(77)

HARVEST SOLENOID

(76)

DUMP SOLENOID

(98)

TERMINATES AT PIN CONNECTION

(56)

(59)

VIEW FOR WIRING

PTCR

(22)

(80)

(81)

(99)

WATER PUMP

CONTACTOR COIL

(74)

(50)

L2 (N)

(75)

6-20

FAN CYCLE CONTROL

OVERLOAD

RUN CAPACITOR**

COMPRESSOR

(48)

(49)

(47)

RUN CAPACITOR

(46)

PTCR

(45)

Part No. 80-1100-3

SV2070

(50)

Page 73

Section 6 Electrical System

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

TB35

HIGH PRES CUTOUT

ICE THICKNESS PROBE

WATER LEVEL PROBE

CAUTION: DISCONNECT POWER BEFORE WORKING

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

(64)

(66)

(55)

BIN SWITCH

TRANS.

(62)

(63)

(65)

TB32

NOT USED

FUSE (7A)

LOW D.C. VOLTAGE PLUG

(67)

(66)

(60)

TOGGLE SWITCH

(68)

(69)

(62)

SEE SERIAL PLATE FOR VOLTAGE

(20)

(61)

(57)

TB31

(58)

TB37

(56)

CLEAN LIGHT

WATER LEVEL LIGHT

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

ICE

INTERNAL WORKING

OFF

VIEW

CLEAN

(21)

WATER VALVE

(77)

HARVEST SOLENOID

(76)

DUMP SOLENOID

(98)

(59)

(73)

(22)

(80)

(81)

WATER PUMP

TERMINATES AT PIN CONNECTION

CONTACTOR COIL

VIEW FOR WIRING

(99)

(74)

(75)

L2 (N)

TB30

(49)

TB35

(42)

CONTACTOR CONTACTS

TB33

(51)

*OVERLOAD

(48)

(52)

(85) (86)

FAN CYCLE CONTROL

COMPRESSOR

(53)

RUN CAPACITOR**

(47)

TB34

RUN CAPACITOR

(46) (50)

(45)

PTCR

FAN MOTOR (AIR COOLED ONLY)

TB3

TB30

SV1646

Part No. 80-1100-3 6-21

Page 74

Electrical System Section 6

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

(89)

HIGH PRES CUTOUT

(88)

ICE THICKNESS PROBE

WATER LEVEL PROBE

NOT USED

BIN SWITCH

CAUTION: DISCONNECT POWER BEFORE WORKING

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

(55)

TRANS.

FUSE (7A)

(62)

(63)

(64)

(65)

(67)

(66)

LOW D.C. VOLTAGE PLUG

TOGGLE SWITCH

(62)

(68)

(69)

(20) (21)

(61)

(60)

(57)

(58)

(56)

CLEAN LIGHT

WATER LEVEL

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

ICE

OFF

CLEAN

VIEW FOR WIRING

SEE SERIAL PLATE FOR VOLTAGE

(22)

WATER VALVE

(77)

HARVEST SOLENOID

(76)

DUMP SOLENOID

(98)

WATER PUMP

(59)

CONTACTOR COIL

TERMINATES AT PIN CONNECTION

(80)

(81)

(99)

(74)

L2 (N)

(75)

6-22

(42)

CONTACTOR CONTACTS

(48)

(51)

*OVERLOAD

(85)

FAN CYCLE CONTROL

COMPRESSOR

(86)

(49)

(47)

(45)

PTCR

FAN MOTOR (AIR COOLED ONLY)

RUN CAPACITOR**

(50)

(46)

(50)

SV2071

Part No. 80-1100-3

Page 75

Section 6 Electrical System

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

SEE SERIAL PLATE FOR VOLTAGE

TB35

ICE THICKNESS PROBE

WATER LEVEL PROBE

HIGH PRES CUTOUT

NOT USED

CAUTION: DISCONNECT POWER BEFORE WORKING

TB32

(64)

BIN SWITCH

(66)

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

(65)

TRANS.

FUSE (7A)

LOW D.C. VOLTAGE PLUG

(67)

(66)

(55)

(62)

(63)

TOGGLE SWITCH

(68)

(69)

(62)

(20)

(61)

(60)

(57)

TB31

(58)

TB37

CLEAN LIGHT

WATER LEVEL LIGHT

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

ICE

INTERNAL WORKING

OFF

VIEW

CLEAN

HARVEST SOLENOID

DUMP SOLENOID

(59)

(56)

(21)

WATER VALVE

(77)

(76)

(98)

(73)

(22)

(80)

(81)

WATER PUMP

TERMINATES AT PIN CONNECTION

CONTACTOR COIL

VIEW FOR WIRING

(99)

(74)

(75)

TB30

(53)

(96)

TB34

RUN CAPACITOR**

FAN MOTOR (AIR COOLED ONLY)

(42)

TB35

COMPRESSOR

TB33

(52)

(85)

FAN CYCLE CONTROL

(86)

TB30

SV1647a

Part No. 80-1100-3 6-23

Page 76

Electrical System Section 6

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

CAUTION: DISCONNECT POWER BEFORE WORKING

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

SEE SERIAL PLATE FOR VOLTAGE

L1L2L3

(89)

(88)

(42)

ICE THICKNESS PROBE

WATER LEVEL PROBE

HIGH PRES CUTOUT

NOT USED

BIN SWITCH

(55)

(64)

(62)

(63)

(65)

TRANS.

FUSE (7A)

LOW D.C. VOLTAGE PLUG

TOGGLE SWITCH

(67)

(66)

(68)

(69)

(62)

(20) (21)

(61)

(60)

(57)

(58)

(56)

CLEAN LIGHT

WATER LEVEL

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

ICE

OFF

CLEAN

WATER VALVE

(77)

HARVEST SOLENOID

(76)

DUMP SOLENOID

(98)

WATER PUMP

(59)

CONTACTOR COIL

VIEW FOR WIRING

(22)

(80)

(81)

(99)

TERMINATES AT PIN CONNECTION

(75)

(74)

6-24

CONTACTOR CONTACTS

(51)

T1T3

(85)

FAN CYCLE CONTROL

(86)

FAN MOTOR (AIR COOLED ONLY)

RUN CAPACITOR**

SV2072

Part No. 80-1100-3

Page 77

Section 6 Electrical System

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

TB35

HIGH PRES CUTOUT

ICE THICKNESS PROBE

WATER LEVEL PROBE

(64)

(66)

(55)

BIN SWITCH

TB32

AUCS DISPENSE TIME

CAUTION: DISCONNECT POWER BEFORE WORKING

DIAGRAM SHOWN DURING FREEZE CYCLE

ON ELECTRICAL CIRCUITRY.

TRANS.

FUSE (7A)

LOW D.C.

VOLTAGE PLUG

(62)

(63)

(65)

(67)

(66)

TOGGLE SWITCH

(68)

(69)

(62)

(20)

RH HARVEST

(61)

(60)

(58)

CLEAN LIGHT

WATER LEVEL LIGHT

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

ICE

OFF

CLEAN

SOLENOID

LH HARVEST SOLENOID

(57)

TB31

TB37

INTERNAL WORKING VIEW

SEE SERIAL PLATE FOR VOLTAGE

WATER

(21)

(77)

(59)

(73)

(56)

(88)

(76)

DUMP SOLENOID

(98)

TERMINATES AT PIN CONNECTION

VALVE

(87)

(80)

(81)

WATER PUMP

CONTACTOR COIL

VIEW FOR WIRING

(22)

(99)

(74)

(75)

L2(N)

TB30

TB35

(42)

CONTACTOR CONTACTS

TB33

(95)

(51)

(52)

*OVERLOAD

(48)

(85) (86)

FAN CYCLE CONTROL

CRANKCASE HEATER

COMPRESSOR

(53)

RUN CAPACITOR**

(47)

TB34

(49)

RUN CAPACITOR

(46) (50)

(45)

PTCR

(44)

FAN MOTOR (AIR COOLED ONLY)

(94)

CONTACTOR CONTACTS

(96)

TB30

SV1652

Part No. 80-1100-3 6-25

Page 78

Electrical System Section 6

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

HIGH PRES CUTOUT

(88)

(42)

ICE THICKNESS PROBE

WATER LEVEL PROBE

(89)

AUCS DISPENSE TIME

BIN SWITCH

(64)

CAUTION: DISCONNECT POWER BEFORE WORKING

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

(55)

TRANS.

FUSE (7A)

LOW D.C. VOLTAGE PLUG

(62)

(63)

(65)

TOGGLE SWITCH

(67)

(66)

(62)

(60)

CLEAN LIGHT

WATER LEVEL LIGHT

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

(68)

ICE

(69)

OFF

CLEAN

SEE SERIAL PLATE FOR VOLTAGE

(20) (21)

(61)

HARVEST SOLENOID

DUMP SOLENOID

(57)

(59)

(58)

(56)

VIEW FOR WIRING

WATER VALVE

(77)

(76)

(98)

WATER PUMP

CONTACTOR COIL

(22)

(80)

(81)

(99)

TERMINATES AT PIN CONNECTION

(74)

L2 (N)

(75)

6-26

(95)

*OVERLOAD

L1 L2

CONTACTOR CONTACTS

(48)

(51)

(85)

FAN CYCLE CONTROL

CRANKCASE HEATER

COMPRESSOR

(86)

(94)

(49)

RUN CAPACITOR

(47)

PTCR

RUN CAPACITOR**

(46)

(45)

FAN MOTOR (AIR COOLED ONLY)

(50)

CONTACTOR CONTACTS

Part No. 80-1100-3

(96)

SV2075

Page 79

Section 6 Electrical System

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

SEE SERIAL PLATE FOR VOLTAGE

L3 L2 L1

TB35

TB32

HIGH PRES CUTOUT

ICE THICKNESS PROBE

WATER LEVEL PROBE

AUCS DISPENSE TIME

(64)

(66)

CAUTION: DISCONNECT POWER BEFORE WORKING

BIN SWITCH

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

(65)

TRANS.

FUSE (7A)

LOW D.C. VOLTAGE PLUG

(67)

(66)

TOGGLE SWITCH

(55)

(62)

(63)

(68)

(69)

(62)

(20)

(61)

(60)

(57)

(58)

CLEAN LIGHT

WATER LEVEL LIGHT

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

ICE

INTERNAL WORKING

OFF

VIEW

CLEAN

(21)

RH HARVEST SOLENOID

(77)

LH HARVEST SOLENOID

TB31

TB37

(56)

(88)

(76)

(59)

(73)

DUMP SOLENOID

(98)

WATER VALVE

(87)

(80)

(81)

WATER PUMP

TERMINATES AT PIN CONNECTION

CONTACTOR COIL

VIEW FOR WIRING

(22)

(99)

(74)

N - 50HZ ONLY

(75)

TB30

L2L3

COMPRESSOR

TB35

(42)

TB35

TB33

(95)

(52)

(85)

FAN CYCLE CONTROL

CRANKCASE HEATER

(96)

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

(86)

(53)

TB34

RUN CAPACITOR**

FAN MOTOR (AIR COOLED ONLY)

(94)

TB30

SV1653

Part No. 80-1100-3 6-27

Page 80

Electrical System Section 6

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

SEE SERIAL PLATE FOR VOLTAGE

L3 L2 L1

(88)

(42)

ICE THICKNESS PROBE

WATER LEVEL PROBE

(89) (55)

HIGH PRES CUTOUT

AUCS DISPENSE TIME

BIN SWITCH

(64)

CAUTION: DISCONNECT POWER BEFORE WORKING

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

(60)

CLEAN LIGHT

WATER LEVEL LIGHT

BIN SWITCH LIGHT

HARVEST LIGHT/

SAFETY LIMIT CODE LIGHT

(68)

ICE

(69)

OFF

CLEAN

(62)

(63)

(65)

TRANS.

FUSE (7A)

LOW D.C. VOLTAGE PLUG

(67)

(66)

TOGGLE SWITCH

(61)

(57)

(58)

(56)

(21)(20)

WATER VALVE

RH HARVEST SOLENOID

(88)

(77)

LH HARVEST SOLENOID

(76)

DUMP SOLENOID

(98) (99)

WATER PUMP

(59)

TERMINATES AT PIN CONNECTION

CONTACTOR COIL

VIEW FOR WIRING

(22)

(81)

(80)

(87)

(75)

N - 50HZ ONLY

L2L3

COMPRESSOR

CONTACTOR CONTACTS

(51)

(95)

(85)

FAN CYCLE CONTROL

CRANKCASE HEATER

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

FAN MOTOR (AIR COOLED ONLY)

(86)

RUN CAPACITOR**

(94)

(96)

SV3008

6-28

Part No. 80-1100-3

Page 81

Section 6 Electrical System

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

TB35

HIGH PRES CUTOUT

ICE THICKNESS PROBE

WATER LEVEL PROBE

TB32

CAUTION: DISCONNECT POWER BEFORE WORKING

NOT USED

(64)

(66)

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

(55)

TRANS.

FUSE (7A)

LOW D.C.

VOLTAGE PLUG

(62)

(63)

BIN SWITCH

(65)

(67)

(66)

(20)

TOGGLE SWITCH

(68)

(69)

CLEAN

(62)

SEE SERIAL PLATE FOR VOLTAGE

(61)

(60)

(57)

TB31

(58)

TB37

CLEAN LIGHT

WATER LEVEL LIGHT

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

ICE

INTERNAL WORKING

OFF

VIEW

HPR SOLENOID

(77)

HARVEST SOLENOID

(76)

DUMP SOLENOID

(98)

(59)

(73)

(56)

(22)(21)

WATER VALVE

(79)(78)

(80)

(81)

WATER PUMP

(83)

LIQUID LINE SOLENOID

CONTACTOR COIL

VIEW FOR WIRING

(99)

(82)

(74)

(75)

L2 (N)

TB3

(49)

TB35

(42)

CONTACTOR CONTACTS

TB33

(51)

COMPRESSOR

*OVERLOAD

(48) (45)

(52)

TERMINATES AT

PIN CONNECTION

(F1)

(53)

(47)

TB34

RUN CAPACITOR

(46)

PTCR

REMOTE

FAN MOTOR

RUN CAPACITOR

REMOTE CONDENSER

(50)

(F2)

TB3

SV1648

Part No. 80-1100-3 6-29

Page 82

Electrical System Section 6

)

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

CAUTION: DISCONNECT POWER BEFORE WORKING

ON ELECTRICAL CIRCUITRY.

(89)

HIGH PRES CUTOUT

(88)

(42)

ICE THICKNESS PROBE

WATER LEVEL PROBE

AUCS DISPENSE TIME

BIN SWITCH

(64)

DIAGRAM SHOWN DURING FREEZE CYCLE

(55)

TRANS.

FUSE (7A)

(62)

(63)

(65)

LOW D.C. VOLTAGE PLUG

TOGGLE SWITCH

(67)

(66)

(68)

(69)

(62)

(20) (21)

(61)

(60)

CLEAN LIGHT

WATER LEVEL LIGHT

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

ICE

OFF

CLEAN

(57)

VIEW FOR WIRING

SEE SERIAL PLATE FOR VOLTAGE

(22)

WATER

HPR SOLENOID

(78) (79)

(88) (80)

HARVEST SOLENOID

(77)

DUMP SOLENOID

(98)

(59) (83) (82)

(58)

(56)

VALVE

(81)

(99)

WATER PUMP

LIQUID LINE SOLENOID

CONTACTOR COIL

(74)

L2 (N

(75)

6-30

CONTACTOR CONTACTS

(48)

(51)

*OVERLOAD

COMPRESSOR

(49)

RUN CAPACITOR

F1 F2

(47)

(46)

PTCR

REMOTE

FAN MOTOR

RUN CAPACITOR**

(45)

REMOTE CONDENSER

(50)

(94)

SV2073

Part No. 80-1100-3

Page 83

Section 6 Electrical System

Q800/Q1000 -REMOTE - 3 PHASE WITH TERMINAL BOARD

SEE SERIAL PLATE FOR VOLTAGE

L3 L2 L1

TB35

ICE THICKNESS PROBE

WATER LEVEL PROBE

AUCS DISPENSE TIME

HIGH PRES CUTOUT

(64)

CAUTION: DISCONNECT POWER BEFORE WORKING

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

TB32

(65)

TRANS.

FUSE (7A)

LOW D.C. VOLTAGE PLUG

TOGGLE SWITCH

(67)

(66)

(55)

(62)

(63)

BIN SWITCH

(68)

(69)

(62)

(20)

(61)

(60)

(57)

TB31

(58)

TB37

CLEAN LIGHT

WATER LEVEL LIGHT

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

ICE

INTERNAL WORKING

OFF

VIEW

CLEAN

(21)

HPR SOLENOID

(78)

(77)

HARVEST SOLENOID

(76)

DUMP SOLENOID

(98)

(59)

(73)

(56)

(22)

WATER VALVE

(79)

(80)

(81)

(99)

WATER PUMP

(83)

CONTACTOR COIL

VIEW FOR WIRING

LIQUID LINE SOLENOID

(82)

(74)

(75)

TB30

(53)

(96)

TB34

REMOTE

FAN MOTOR

RUN CAPACITOR

(F2)

(42)

CONTACTOR CONTACTS

COMPRESSOR

TB35

TB33

(52)

(F1)

TERMINATES AT

PIN CONNECTION

REMOTE CONDENSER

TB30

SV1649

Part No. 80-1100-3 6-31

Page 84

Electrical System Section 6

Q800/Q1000 -REMOTE - 3 PHASE WITHOUT TERMINAL BOARD

SEE SERIAL PLATE FOR VOLTAGE

L3 L2 L1

(89)

HIGH PRES CUTOUT

(88)

(42)

ICE THICKNESS PROBE

WATER LEVEL PROBE

(55)

NOT USED

BIN SWITCH

(64)

CAUTION: DISCONNECT POWER BEFORE WORKING

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

TRANS.

FUSE (7A)

LOW D.C.

VOLTAGE PLUG

(62)

(63)

(65)

TOGGLE SWITCH

(67)

(66)

(68) (69)

(62)

CLEAN

(60)

ICE

OFF

(20)

(61)

(57)

(58)

(56)

CLEAN LIGHT

WATER LEVEL LIGHT

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

INTERNAL WORKING VIEW

HPR SOLENOID

(77)

HARVEST SOLENOID

(76) DUMP SOLENOID

(98)

WATER PUMP

(59)

(21)

(78)

(83)

(22)

WATER VALVE

(79)

(80)

(81)

(75)

(99)

(82)

LIQUID LINE SOLENOID

CONTACTOR COIL

(74)

VIEW FOR WIRING

COMPRESSOR

6-32

(85)

CONTACTOR CONTACTS

(51)

(F2)

REMOTE

FAN MOTOR

RUN CAPACITOR

REMOTE CONDENSER

(F1)

SV2074

Part No. 80-1100-3

Page 85

Section 6 Electrical System

Q1300/Q1800 - REMOTE - 1 PHASE WITH TERMINAL BOARD

TB35

HIGH PRES CUTOUT

ICE THICKNESS PROBE

WATER LEVEL PROBE

CAUTION: DISCONNECT POWER BEFORE WORKING

TB32

AUCS DISPENSE TIME

(55)

(64)

(66)

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

TRANS.

FUSE (7A)

LOW D.C. VOLTAGE PLUG

(62)

(63)

BIN SWITCH

(65)

(67)

(66)

TOGGLE SWITCH

(68)

(69)

(62)

(20)

(61)

(60)

CLEAN LIGHT

WATER LEVEL LIGHT

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

ICE

OFF

CLEAN

(21)

RH HARVEST SOLENOID

(57)

(58)

INTERNAL WORKING VIEW

LH HARVEST SOLENOID

TB31

TB37

SEE SERIAL PLATE FOR VOLTAGE

WATER VALVE

HPR SOLENOID

(77)

(76)

DUMP SOLENOID

(98)

(59)

(73)

(56)

(83)

(22)

(79)(78)

(87)(88)

(80)

(81)

WATER PUMP

CONTACTOR COIL

VIEW FOR WIRING

(75)

(99)

(82)

LIQUID LINE SOLENOID

(74)

L2 (N)

TB3

TB35

(42)

CONTACTOR CONTACTS

TB33

(51)

(48)

(52)

*OVERLOAD

TERMINATES AT

PIN CONNECTION

(F1)

CRANKCASE HEATER

COMPRESSOR

(49)

(47)

(53)

TB34

RUN CAPACITOR

(46)

PTCR

FAN MOTOR

RUN CAPACITOR

(44)

REMOTE

(45)

(94)(95)

(50)

(F2)

REMOTE CONDENSER

CONTACTOR CONTACTS

(96)

SV1650

TB3

Part No. 80-1100-3 6-33

Page 86

Electrical System Section 6

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

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

(55)(89)

HIGH PRES CUTOUT

(88)

ICE THICKNESS PROBE

WATER LEVEL PROBE

AUCS DISPENSE TIME

BIN SWITCH

(64)

(62)

(63)

(65)

TRANS.

FUSE (7A)

LOW D.C. VOLTAGE PLUG

(67)

(66)

TOGGLE SWITCH

(68)

(69)

(62)

ICE

OFF

CLEAN

(61)

(60)

(57)

CLEAN LIGHT

WATER LEVEL LIGHT

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

INTERNAL WORKING VIEW

SEE SERIAL PLATE FOR VOLTAGECAUTION: DISCONNECT POWER BEFORE WORKING

(21)(20)

HPR SOLENOID

RH HARVEST SOLENOID

(77)

LH HARVEST SOLENOID

DUMP SOLENOID

TB37

(59)

(58)

(56)

(78)

(88)

(76)

(98)

(83)

CONTACTOR COIL

(22)

WATER VALVE

(79)

(87)

(80)

(75)

(81)

(99)

WATER PUMP

(82)

LIQUID LINE SOLENOID

VIEW FOR WIRING

L2 (N)

(74)

6-34

(42)

CONTACTOR CONTACTS

(95)

*OVERLOAD

(48)

(51)

CRANKCASE HEATER

COMPRESSOR

(F1) (F2)

(49)

(47)

PTCR

(44)

REMOTE

FAN MOTOR

RUN CAPACITOR

(46) (50)

(94)

(45)

REMOTE CONDENSER

(F2)

CONTACTOR CONTACTS

(96)

Part No. 80-1100-3

SV2076

Page 87

Section 6 Electrical System

Q1300/Q1800 - REMOTE - 3 PHASE WITH TERMINAL BOARD

SEE SERIAL PLATE FOR VOLTAGE

L3 L2 L1

TB35

TB32

HIGH PRES CUTOUT

ICE THICKNESS PROBE

WATER LEVEL PROBE

AUCS DISPENSE TIME

(64)

(66)

CAUTION: DISCONNECT POWER BEFORE WORKING

BIN SWITCH

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

(65)

TRANS.

FUSE (7A)

LOW D.C. VOLTAGE PLUG

(67)

(66)

TOGGLE SWITCH

(68)

(69)

(62)

(55)

(62)

(63)

(20)

RH HARVEST

(61)

(60)

ICE

OFF

CLEAN

SOLENOID

(57)

(58)

TB37

CLEAN LIGHT

WATER LEVEL LIGHT

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

INTERNAL WORKING VIEW

(21)

HPR SOLENOID

(77)

LH HARVEST SOLENOID

(76)

DUMP SOLENOID

TB31

(98)

(59)

(73)

(56)

(78)

(88)

(83)

CONTACTOR COIL

VIEW FOR WIRING

WATER VALVE

(79)

(87)

(80)

(81)

WATER PUMP

LIQUID LINE SOLENOID

(99)

(82)

(74)

(75)

(22)

N - 50H ONLY

TB30

CRANKCASE HEATER

(96)

(53)

TB34

REMOTE CONDENSER

REMOTE

FAN MOTOR

RUN CAPACITOR

(94)

TB30

(F2)

L2L3

COMPRESSOR

TB35

(42)

TB35

CONTACTOR CONTACTS

(95)

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

(F1)

TB33 (52)(51)

TERMINATES AT

PIN CONNECTION

SV1651

Part No. 80-1100-3 6-35

Page 88

Electrical System Section 6

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

SEE SERIAL PLATE FOR VOLTAGE

L3 L2 L1

(55)(89)

HIGH PRES CUTOUT

(88)

(42)

ICE THICKNESS PROBE

WATER LEVEL PROBE

NOT USED

BIN SWITCH

(64)

CAUTION: DISCONNECT POWER BEFORE WORKING

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

TRANS.

FUSE (7A)

LOW D.C.

VOLTAGE PLUG

(62)

(63)

(65)

TOGGLE SWITCH

(67)

(66)

(68) (69)

(62)

(20)

(61)

(60)

CLEAN LIGHT

WATER LEVEL LIGHT

BIN SWITCH LIGHT

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT

ICE

OFF

CLEAN

HPR SOLENOID

LH HARVEST SOLENOID

(77)

RH HARVEST SOLENOID

(76)

DUMP SOLENOID

(57)

(58)

(56)

INTERNAL WORKING VIEW

(98)

(59)

(21)

(78)

(88)

WATER PUMP

(22)

WATER VALVE

(79)

(87)

(80)

(75)

(81)

(99)

(82)(83)

LIQUID LINE SOLENOID

CONTACTOR COIL

(74)

VIEW FOR WIRING

N - 50 H

ONL

COMPRESSOR

6-36

CONTACTOR CONTACTS

(95) (94)

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

(F1)

(51)

REMOTE CONDENSER

(96) (96)

REMOTE

FAN MOTOR

RUN CAPACITOR

(F2)

SV2077

Part No. 80-1100-3

Page 89

Section 6 Electrical System

THIS PAGE INTENTIONALLY LEFT BLANK

Part No. 80-1100-3 6-37

Page 90

Electrical System Section 6

Component Specifications and Diagnostics

MAIN FUSE

Function

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

Specifications

The main fuse is 250 Volt, 7 amp.

Check Procedure

Warning

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

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

Warning

Disconnect electrical power to the entire ice machine before proceeding.

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

BIN SWITCH

Function

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

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

This occurs when the bin switch is opened and closed again within 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.

Important

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

Reading Result

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

Specifications

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

6-38

Part No. 80-1100-3

Page 91

Section 6 Electrical System

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).

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 remains off: When the harvest cycle time reaches 3.5 minutes and the bin switch is not closed, the ice machine stops as though the bin were full.

• Water curtain is put back on: If the bin switch closes prior to reaching the 3.5minute point, the ice machine immediately returns to another freeze sequence prechill.

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

Part No. 80-1100-3 6-39

Page 92

Electrical System Section 6

COMPRESSOR ELECTRICAL DIAGNOSTICS

The compressor will not start or will trip repeatedly on overload.

Check Resistance (Ohm) Values

NOTE: Compressor windings can have very low ohm values. Use a properly calibrated meter.

Perform the resistance test after the compressor cools. The compressor dome should be cool enough to touch (below 120°F/49°C) to assure that the overload is closed and the resistance readings will be accurate.

SINGLE PHASE COMPRESSORS

1. Disconnect power from the cuber and remove the wires from the compressor terminals.

2. The resistance values must be within published guidelines for the compressor. The resistance values between C and S and between C and R, when added together, should equal the resistance value between S and R.

3. If the overload is open, there will be a resistance reading between S and R, and open readings between C and S and between C and R. Allow the compressor to cool, then check the readings again.

THREE PHASE COMPRESSORS

1. Disconnect power from the cuber and remove the wires from the compressor terminals.

2. The resistance values 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 compressor attempts to start, or hums and trips the overload protector, check the starting components before replacing the compressor.

• Visual evidence of capacitor failure can include a bulged terminal end or a ruptured membrane. Do not assume a capacitor is good if no visual evidence is present.

• A good test is to install a known good substitute capacitor.

• Use a capacitor tester when checking a suspect capacitor. Clip the bleed resistor off the capacitor terminals before testing.

6-40

Part No. 80-1100-3

Page 93

Section 6 Electrical System

PTCR DIAGNOSTICS

What is a PTCR?

A PTCR (or Positive Temperature 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 starting.

Compressor Start Sequence

PTCR’s provide additional starting torque by increasing the current in the auxiliary (start) winding during starting. The PTCR is wired across the run capacitor (in series with the start winding).

1. It is important for the refrigerant discharge and suction pressures to be somewhat equalized prior to the compressor starting. To assure equalization of pressures the harvest valve (and HPR valve on remotes) will energize for 45 seconds prior to compressor starting. The harvest valve (and HPR valve on remotes) remains on for an additional 5 seconds while the compressor is starting.

2. When starting the compressor, the contactor closes and the PTCR, which is at a low resistance value, allows high starting current to flow in the start winding.

3. The current passing through the PTCR causes it to rapidly heat up, and after approximately .25-1 second it abruptly “switches” to a very high resistance, virtually stopping current flow through it.

4. At this point the motor is up to speed and all current going through the start winding will now pass through the run capacitor.

5. The PTCR remains hot and at a high resistance as long as voltage remains on the circuit.

6. It is important to provide time between compressor restarts to allow the PTCR to cool down to near its initial temperature (low resistance). When the contactor opens to stop the compressor, the PTCR cools down to its initial low resistance and is again ready to provide starting torque assistance. To assure the PTCR has cooled down, during an automatic shut-off, the Q model ice machines have a built-in 3-minute off time before it can restart.

Part No. 80-1100-3 6-41

Page 94

Electrical System Section 6

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 off. 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.

CONTACTOR CONTACTS

COMPRESSOR

RUN CAPACITOR

PTCR

SV1506

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

CONTACTOR CONTACTS

COMPRESSOR

RUN CAPACITOR

Troubleshooting PTCR’s

WHY A GOOD PTCR MAY FAIL TO START THE COMPRESSOR

The PTCR must be cooled before attempting to start the compressor, otherwise the high starting torque may not last long enough.

For example, if the PTCR is properly cooled, say 60°F (15.6°C) when the compressor starts, it will take .25 to

1.0 seconds before its temperature reaches 260°F (126.6°C), and current flow is stopped.

If the PTCR is still warm, say 160°F (71.1°C) when the compressor starts, it will take only .125 to .50 seconds before its temperature reaches 260°F (126.6°C), and current flow is stopped. This decreased time may be insufficient to start the compressor.

A good PTCR may be too hot to operate properly at start-up because:

• The ice machine’s 3-minute delay has been overridden. Opening and closing the service disconnect or cycling the toggle switch from OFF to ICE will override the delay period.

• The control box temperature is too high. Though rare, very high air temperatures (intense sunlight, etc.) can greatly increase the temperature of the control box and its contents. This may require a longer off time to allow the PTCR to cool.

• The compressor has short-cycled, or the compressor overload has opened. Move the toggle switch to OFF and allow the compressor and PTCR to cool.

Continued on next page …

Figure 6-16. After Start-Up

(Current Flows Through Run Capacitor)

6-42

PTCR

SV1507

Part No. 80-1100-3

Page 95

Section 6 Electrical System

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

• The voltage at the compressor during start-up is too low.

Manitowoc ice machines are rated at ±10% of nameplate voltage at compressor start-up. (Ex: An ice machine rated at 208-230 should have a compressor start-up voltage between 187 and 253 volts.)

• The compressor discharge and suction pressures are not matched closely enough or equalized.

These two pressures must be somewhat equalized before attempting to start the compressor. The harvest valve (and HPR valve on remotes) energizes for 45 seconds before the compressor starts, and remains on 5 seconds after the compressor starts. Make sure this is occurring and the harvest valve (and HPR solenoid) coil is functional before assuming that the PTCR is bad.

CHECKING THE PTCR

Model

Q200 Q280 Q320 Q420 Q450 Q600

Q800 Q1000 Q1300 Q1600 Q1800

Manitowoc

Part Number

8505003 305C20 22-50 Ohms

8504993 305C19 18-40 Ohms

8504913 305C9 8-22 Ohms

Cera-Mite

Part Number

Room

Temperature

Resistance

Warning

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

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

NOTE: The PTCR case temperature may reach 210°F (100°C) while the compressor is running. This is normal. Do not change a PTCR just because it is hot.

2. Wait at least 10 minutes for the PTCR to cool to room temperature.

3. Remove the PTCR from the ice machine.

4. Measure the resistance of the PTCR as shown below. If the resistance falls outside of the acceptable range, replace it.

SV1540

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

SV1541

Figure 6-18. Manitowoc PTCR 8504913

Part No. 80-1100-3 6-43

Page 96

Electrical System Section 6

ICE/OFF/CLEAN TOGGLE SWITCH

Function

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

Specifications

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 where the wire numbers are connected to the switch terminals, or refer to the wiring diagram to take proper readings.

CONTROL BOARD RELAYS

Function

The control board relays energize and de-energize system components.

Specifications

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

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)

Switch Setting Termin als Ohm Reading

66-62 Open

ICE

CLEAN

OFF

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

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

6-44

Part No. 80-1100-3

Page 97

Section 6 Electrical System

ELECTRONIC CONTROL BOARD

AC LI NE VOLTAGE ELECTRICAL PLUG (NUMBERS MARKED ON WIRES)

CLEAN LIGHT YELLOW

WATER LEVEL PROBE LIGHT GREEN

MAIN FUSE (7A)

BIN SWITCH LIGHT GREEN

AUTOM ATIC CLEANING SYSTEM (AuCS) ACCESSORY PLUG

ICE THICKNESS PROBE (3/16'' CONNECTION)

WATER LEVEL PROBE

JUMPER USED ON Q1300/Q1600/ Q1800 ONLY

DC LOW VOLTAGE ELECTRICAL PLUG (NUMBERS MARKED ON WIRES)

HARVEST LIGHT/ SAFETY LIMIT CODE LIGHT RED

SV1588

Figure 6-19. Control Board

Part No. 80-1100-3 6-45

Page 98

Electrical System Section 6

General

Q-Model control boards use a dual voltage transformer. This means only one control board is needed for both 115V and 208-230V use.

Safety Limits

In addition to standard safety controls, such as the high pressure cut-out, the control board has built-in safety limits.

These safety limits protect the ice machine from major component failures. For more information, see “Safety Limits” on Page 7-13.

Inputs

The control board, along with inputs, controls all electrical components, including the ice machine sequence of operation. Prior to diagnosing, you must understand how the inputs affect the control board operation.

Refer to specific component specifications (inputs), wiring diagrams and ice machine sequence of operation sections for details.

As an example, refer to “Ice Thickness Probe” on the next page for information relating to how the probe and control board function together.

This section will include items such as:

• How a harvest cycle is initiated

• How the harvest light functions with the probe

• Freeze time lock-in feature

• Maximum freeze time

• Diagnosing ice thickness control circuitry

6-46

Part No. 80-1100-3

Page 99

Section 6 Electrical System

Ice Thickness Probe (Harvest Initiation)

HOW THE PROBE WORKS

Manitowoc’s electronic sensing circuit does not rely on refrigerant pressure, evaporator temperature, water levels or timers to produce consistent ice formation.

As ice forms on the evaporator, water (not ice) contacts the ice thickness probe. After the water completes this circuit across the probe continuously for 6-10 seconds, a harvest cycle is initiated.

SV1730A

Figure 6-20. Ice Thickness Probe

HARVEST/SAFETY LIMIT LIGHT

This light’s primary function is to be on as water contacts the ice thickness probe during the freeze cycle, and remain on throughout the entire harvest cycle. The light will flicker as water splashes on the probes.

The light’s secondary function is to continuously flash when the ice machine is shut off on a safety limit, and to indicate which safety limit shut off the ice machine.

FREEZE TIME LOCK-IN FEATURE

The ice machine control system incorporates a freeze time lock-in feature. This prevents the ice machine from short cycling in and out of harvest.

The control board locks the ice machine in the freeze cycle for six minutes. If water contacts the ice thickness probe during these six minutes, the harvest light will come on (to indicate that water is in contact with the probe), but the ice machine will stay in the freeze cycle. After the six minutes are up, a harvest cycle is initiated. This is important to remember when performing diagnostic procedures on the ice thickness control circuitry.

To allow the service technician to initiate a harvest cycle without delay, this feature is not used on the first cycle after moving the toggle switch OFF and back to ICE.

MAXIMUM FREEZE TIME

The control system includes a built-in safety which will automatically cycle the ice machine into harvest after 60 minutes in the freeze cycle.

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, or 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).

ADJUSTING SCREW

1/8” ICE BRIDGE THICKNESS

SV1208

Figure 6-21. Ice Thickness Check

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

Ice Thickness Probe Cleaning

1. Mix a solution of Manitowoc ice machine cleaner and water (2 ounces of cleaner to 16 ounces of water) in a container.

2. Soak ice thickness probe in container of cleaner/ water solution while disassembling and cleaning water circuit components (soak ice thickness probe for 10 minutes or longer).

3. Clean all ice thickness probe surfaces including all plastic parts (do not use abrasives). Verify the ice thickness probe cavity is clean. Thoroughly rinse ice thickness probe (including cavity) with clean water, then dry completely. Incomplete rinsing and

drying of the ice thickness probe can cause premature harvest.

4. Reinstall ice thickness probe, then sanitize all ice machine and bin/dispenser interior surfaces.

Part No. 80-1100-3 6-47

Page 100

Electrical System Section 6

DIAGNOSING ICE THICKNESS CONTROL CIRCUITRY

Ice Machine Does Not Cycle Into Harvest When Water Contacts The Ice Thickness Control Probe

Step 1 Bypass the freeze time lock-in feature by moving the ICE/OFF/CLEAN switch to OFF and back to ICE. Wait

until the water starts to flow over the evaporator.

Step 2 Clip the jumper wire leads to the ice thickness probe and any cabinet ground.

ICE THICKNESS PROBE

EVAPORATOR

GROUND

JUMPER WIRE

CLEAN LIGHT

WATER LEVEL LIGHT

BIN SWITCH LIGHT

HARVEST/SAFETY LIMIT LIGHT

SV1588ASV3010

Figure 6-22. Step 2

Step 2 Jumper wire connected from probe to ground

Monitoring of Harvest Light Correction

The harvest light comes on, and 6-10 seconds later, ice machine cycles from freeze to harvest.

The harvest light comes on but the ice machine stays in the freeze sequence.

The ice thickness control circuitry is functioning properly. Do not change any parts.

The ice thickness control circuitry is functioning properly. The ice machine is in a six-minute freeze time lock-in. Verify step 1 of this procedure was followed correctly.

The harvest light does not come on. Proceed to Step 3, below.

Step 3 Disconnect the ice thickness probe from the control board at terminal 1C. Clip the jumper wire leads to terminal 1C on the control board and any cabinet ground. Monitor the harvest light.

EVAPORATOR

ICE THICKNESS PROBE

JUMPER WIRE

GROUND

SV3011 SV1588G

CLEAN LIGHT

WATER LEVEL LIGHT

BIN SWITCH LIGHT

HARVEST/SAFETY LIMIT LIGHT

Figure 6-23. Step 3

Step 3 Jumper wire connected from control board terminal 1C to ground

Monitoring of Harvest Light Correction

The harvest light comes on, and 6-10 seconds later, ice

The ice thickness probe is causing the malfunction.

machine cycles from freeze to harvest. The harvest light comes on but the ice machine stays in the

freeze sequence.

The control circuitry is functioning properly. The ice machine is in a six-minute freeze time lock-in (verify step 1 of this procedure was followed correctly).

The harvest light does not come on. The control board is causing the malfunction.

6-48

Part No. 80-1100-3