Manitowoc I0320, I0500, I0320A, I0500A User Manual

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Manitowoc

Ice Machines With R290

Technician’s Handbook

This manual is updated as new information and models are released.

Visit our website for the latest manual. www.manitowocice.com

America’s #1 Selling Ice Machine

Part Number STH038 5/12

Indigo™ Series

Refrigerant

Safety Notices

Warning

Caution

As you work on Manitowoc equipment, be sure to pay close attention to the safety notices in this handbook. Disregarding the notices may lead to serious injury and/or damage to the equipment.

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

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.

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

Procedural Notices

Important

As you work on Manitowoc equipment, be sure to read the procedural notices in this handbook. These notices supply helpful information which may assist you as you work.

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

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

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

Read These Before Proceeding:

Caution

Important

! Warning

Proper installation, care and maintenance are essential for maximum performance and troublefree operation of your Manitowoc equipment. If you encounter problems not covered by this manual, do not proceed, contact Manitowoc Foodservice Group. We will be happy to provide assistance.

Proper installation, care and maintenance are essential for maximum performance and troublefree operation of your equipment. Visit our website www.manitowocfsg.com for manual updates, translations, or contact information for service agents in your area.

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

Read this manual thoroughly before operating, installing or performing maintenance on the equipment. Failure to follow instructions in this manual can cause property damage, injury or death.

! Warning

Do not use electrical appliances or accessories

Warning

! Warning

other than those supplied by Manitowoc for your ice machine model.

Two or more people or a lifting device are required to lift this appliance.

This equipment contains high voltage electricity and refrigerant charge. Installation and repairs are to be performed by properly trained technicians aware of the dangers of dealing with high voltage electricity and refrigerant under pressure.The technician must also be certified in proper refrigerant handling and servicing procedures. All lockout and tag out procedures must be followed when working on this equipment.

Do not damage the refrigeration circuit when installing, maintaining or servicing the unit.

! Warning

Do not operate equipment that has been misused,

! Warning

Warning

! Warning

Warning

abused, neglected, damaged, or altered/modified from that of original manufactured specifications. This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision concerning use of the appliance by a person responsible for their safety. Do not allow children to play with this appliance.

All covers and access panels must be in place and properly secured, before operating this equipment.

Do not obstruct machine vents or openings.

Do not store gasoline or other flammable vapors or liquids in the vicinity of this or any other appliance.

Do not clean with water jet.

! Warning

It is the responsibility of the equipment owner to

! Warning

perform a Personal Protective Equipment Hazard Assessment to ensure adequate protection during maintenance procedures.

Two or more people are required to move this equipment to prevent tipping.

Some 50 hz models may contain up to 150 grams of R290 (propane) refrigerant. R290 (propane) is flammable in concentrations of air between approximately 2.1% and 9.5% by volume (LEL lower explosion limit and UEL upper explosion limit). An ignition source at a temperature higher than 470°C is needed for a combustion to occur. Refer to nameplate to identify the type of refrigerant in your equipment. Only trained and qualified personnel aware of the dangers are allowed to work on the equipment.

! Warning

When using electric appliances, basic precautions must always be followed, including the following:

a. Read all the instructions before using

the appliance.

b. To reduce the risk of injury, close

supervision is necessary when an appliance is used near children.

c. Do not contact moving parts.

d. Only use attachments recommended or

sold by the manufacturer.

e. Do not use outdoors.

f. For a cord-connected appliance, the

following must be included:

• Do not unplug by pulling on cord. To unplug, grasp the plug, not the cord.

• Unplug from outlet when not in use and before servicing or cleaning.

• Do not operate any appliance with a damaged cord or plug, or after the appliance malfunctions or is dropped or damaged in any manner. Contact the nearest authorized service facility for examination, repair, or electrical or mechanical adjustment.

g. Follow applicable lock out tag out

procedures before working on equipment.

h. Connect to a properly grounded outlet

only.

Table of Contents

General Information

How to Read a Model Number . . . . . . . . . 13

Model/Serial Number Location . . . . . . . . 14

Ice Machine Warranty Informatio n . . . . . 14

Owner Warranty Registration Card . . . 14

Commercial Warranty Coverage . . . . . 15

Installation

Location of Ice Machine . . . . . . . . . . . . . . 20

Clearance Req uir ements . . . . . . . . . . . . . 21

Ice Machine Heat of Rejection . . . . . . . . . 21

Ice Deflector . . . . . . . . . . . . . . . . . . . . . . . 22

Installation on a Bin . . . . . . . . . . . . . . . 22

Installation on a Dispenser . . . . . . . . . 22

Electrical Requirements . . . . . . . . . . . . . . 23

Maintenance

Cleaning and Sanitizing . . . . . . . . . . . . . . 25

General . . . . . . . . . . . . . . . . . . . . . . . . 25

Cleaning/Sanitizing Procedure . . . . . . 27

Preventative Maintenance Cleaning Proce-

dure . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

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

Cleaning / Sanitizing Procedure . . . . . . . 28

Cleaning Procedure . . . . . . . . . . . . . . 28

Sanitizing Procedure . . . . . . . . . . . . . . 33

Removal from Service/Winterization . . . 36

Part Number STH038 5/12 9

Operation

Control Panel Features . . . . . . . . . . . . . . 37

Menu Navigation Overview . . . . . . . . . . . 39

Display Panel Navigation . . . . . . . . . . . . 40

Alerts and Messages . . . . . . . . . . . . . . . . 42

Main Menu . . . . . . . . . . . . . . . . . . . . . . . . 43

Machine Info Menu . . . . . . . . . . . . . . . . . 44

Password Entry . . . . . . . . . . . . . . . . . . . . 45

Set-Up Menu . . . . . . . . . . . . . . . . . . . . . . . 48

Buttons . . . . . . . . . . . . . . . . . . . . . . . . 37

Display Panel . . . . . . . . . . . . . . . . . . . 38

Reset Password To Factory Defaults . 47

Language . . . . . . . . . . . . . . . . . . . . . . 48

Time & Date . . . . . . . . . . . . . . . . . . . . 48

Time Configuration . . . . . . . . . . . . . . . 50

Units . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Ice Clarity . . . . . . . . . . . . . . . . . . . . . . 51

LCD Brightness . . . . . . . . . . . . . . . . . 51

Password On . . . . . . . . . . . . . . . . . . . 52

Edit password . . . . . . . . . . . . . . . . . . . 52

Clean Minder . . . . . . . . . . . . . . . . . . . 52

IAuCS Runtime . . . . . . . . . . . . . . . . . . 53

Air Filter . . . . . . . . . . . . . . . . . . . . . . . 53

Water Filter . . . . . . . . . . . . . . . . . . . . . 54

LuminIce™ reminder . . . . . . . . . . . . . 54

USB Setup . . . . . . . . . . . . . . . . . . . . . 55

Factory Defaults . . . . . . . . . . . . . . . . . 55

10 Part Number STH038 5/12

Energy Saver Menu . . . . . . . . . . . . . . . . . 56

Ice Program . . . . . . . . . . . . . . . . . . . . . 57

Water Miser . . . . . . . . . . . . . . . . . . . . . 58

Statistics . . . . . . . . . . . . . . . . . . . . . . . 58

Service Menu . . . . . . . . . . . . . . . . . . . . . . 59

Data History . . . . . . . . . . . . . . . . . . . . 61

Real Time Data . . . . . . . . . . . . . . . . . . 62

Diagnostics . . . . . . . . . . . . . . . . . . . . . 64

Manual Harvest . . . . . . . . . . . . . . . . . . 65

Replace Control Board . . . . . . . . . . . . 65

USB Setup . . . . . . . . . . . . . . . . . . . . . 65

Event Log Menu . . . . . . . . . . . . . . . . . 66

Event Log . . . . . . . . . . . . . . . . . . . . . . 67

USB Flash Drive Specifications and Format-

ting . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Upgrading Firmware with a Flash Drive or Transferring Setup Data To Multiple Ma-

chines . . . . . . . . . . . . . . . . . . . . . . . . . 73

Exporting Data to a Flash Drive . . . . . 75

Safe Operation Mode . . . . . . . . . . . . . 76

Operational Checks . . . . . . . . . . . . . . . . . 77

General . . . . . . . . . . . . . . . . . . . . . . . . 77

Ice Thickness Check . . . . . . . . . . . . . . 78

Sequence of Operation . . . . . . . . . . . . . . 79

Self Contained Air or Water Cooled . . 79

Part Number STH038 5/12 11

Troubleshooting

Safety Limits . . . . . . . . . . . . . . . . . . . . . . 85

Safety Limit #1 . . . . . . . . . . . . . . . . . . 86

Safety Limit #2 . . . . . . . . . . . . . . . . . . 87

Troubleshooting By Symptom . . . . . . . . 88

Symptom #1 Ice Machine will not run . 90 Symptom #2 Low Production, Long Freeze

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Symptom #2 - Freeze Cycle Refrigeration System Operational Analysis Tables . 96

Symptom #3 Harvest Problems . . . . . 118

Symptom #3 Will Not Harvest, Cubes Not

Melted . . . . . . . . . . . . . . . . . . . . . . . . . 119

Symptom #4 Will Not Harvest, Cubes Melt-

ed . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

12 Part Number STH038 5/12

Component Check Procedures

Electrical Components . . . . . . . . . . . . . . . 123

Control Board, Display board and Touch

Pad . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

Control Board Relay Test . . . . . . . . . . 126

USB Flash Drive Specifications and Format-

ting . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

Upgrading Firmware with a Flash Drive or Transferring Setup Data To Multiple Ma-

chines . . . . . . . . . . . . . . . . . . . . . . . . . 131

Exporting Data to a Flash Drive . . . . . 133

Programming A Replacement Control Board

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

Main Fuse . . . . . . . . . . . . . . . . . . . . . . 137

Bin Switch . . . . . . . . . . . . . . . . . . . . . . 138

Water Level Control Circuitry . . . . . . . 141

Ice Thickness Probe (Harvest Initiation)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

High Pressure Cutout (HPCO) Control 151

Fan Cycle Control . . . . . . . . . . . . . . . . 154

Thermistors . . . . . . . . . . . . . . . . . . . . . 155

Harvest Assist Air Pump . . . . . . . . . . . 159

Compressor Electrical Diagnostics . . . 160

Diagnosing Start Components . . . . . . 162

Refrigerant Recovery/Evacuation/Charging

procedures . . . . . . . . . . . . . . . . . . . . . 166

Liquid Line Filter-Driers . . . . . . . . . . . . 166

Total System Refrigerant Charge . . . . 166

Part Number STH038 5/12 13

Charts

Cycle Times/24-Hour Ice Production/Charts

Diagrams

Wiring Diagrams . . . . . . . . . . . . . . . . . . . 173

Electronic Control Board . . . . . . . . . . . . 176

Refrigeration Tubing Sche matics . . . . . 177

I0320A Air-Cooled Model . . . . . . . . . . 168

I0500A Air-Cooled Model . . . . . . . . . . 170

Wiring Diagram Legend . . . . . . . . . . . 173

I0320 . . . . . . . . . . . . . . . . . . . . . . . . . 174

I0500 . . . . . . . . . . . . . . . . . . . . . . . . . 175

14 Part Number STH038 5/12

General Information

How to Read a Model Number

P - Correctional Model

M - Marine Model

5 - 50H Z

6 - 60H Z

# HER TZ

X - LuminIce

Regulating Valve

HP - High Pressure Water

161 - 115 /60/1

261 - 208 -230 /60/1

251 - 230 /50/1

263 - 208 -230 /60/3

VOLTAGE

463 - 460 /60/3

3 - Three Phase

E - WRAS 50 Cyc le Only

NO INDICATOR - 1 Phase

A - Self-Contained Air -Cooled

W - Self-Contained Water -Cooled

N - Remote Air-Cooled

C - CVD Air-Cooled

DC - IB Dice Model

CONDENSER TYPE

YC - IB Half Dice

P I Y 0855 W3 – 263PHPX

0 to 6 & 8 - Self-Contained Unit

7 & 8 - CVD R emote C ondensing U nit

9 - Remote Air -Cooled C ondenser

9 - Ice Beverage Remote Condensing Unit

# CUBE SIZE CONDENSER TYPE

0 - Regular Air-Cooled

1 - Regular Water-Cooled

2 - Dice Air-Cooled

Part Number STH038 5/12 13

3 - Dice Water-Cooled

4 - Half-Dice Air-Cooled

5 - Half-Dice Water- Cooled

ICE MACHINE MODEL

I - Indigo Model

ICE CUBE SIZE

R - Regular

D - Dice

Y - Half-Dice

Not Used On IB Models

IB - Ice Beverage

Ice Machine Series

P - R290 Refrigerant

Model/Serial Number Location

Important

These numbers are required when requesting information from your local Manitowoc Distributor, service representative, or Manitowoc Ice. The model and serial number are listed on the OWNER WARRANTY REGISTRATION CARD. They are also listed on the MODEL/SERIAL NUMBER DECAL affixed to the front and rear of the ice machine.

Ice Machine Warranty Information

OWNER WARRANTY REGISTRATION CARD

Warranty coverage begins the day the ice machine is installed.

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

If the OWNER WARRANTY REGISTRATION CARD is not returned, Manitowoc will use the born on date recorded in the control board or the date of sale to the Manitowoc Distributor as the first day of warranty coverage for your new ice machine.

14 Part Number STH038 5/12

COMMERCIAL WARRANTY COVERAGE

Manitowoc Ice, (hereinafter referred to as the "COMPANY") warrants for a period of thirty-six months from the installation date (except as limited below) that new ice machines manufactured by the COMPANY shall be free of defects in material or workmanship under normal and proper use and maintenance as specified by the COMPANY and upon proper installation and start-up in accordance with the instruction manual supplied with the ice machine.

The COMPANY'S warranty hereunder with respect to the compressor shall apply for an additional twentyfour months, excluding all labor charges, and with respect to the evaporator for an additional twenty-four months, including labor charges.

The obligation of the COMPANY under this warranty is limited to the repair or replacement of parts, components, or assemblies that in the opinion of the COMPANY are defective. This warranty is further limited to the cost of parts, components or assemblies and standard straight time labor charges at the servicing location. Time and hourly rate schedules, as published from time to time by the COMPANY, apply to all service procedures.

Part Number STH038 5/12 15

Additional expenses including without limitation, travel time, overtime premium, material cost, accessing or removal of the ice machine, or shipping are the responsibility of the owner, along with all maintenance, adjustments, cleaning, and ice purchases.

Labor covered under this warranty must be performed by a COMPANY Contracted Service Representative or a refrigeration service agency as qualified and authorized by the COMPANY'S local Distributor.

The COMPANY'S liability under this warranty shall in no event be greater than the actual purchase price paid by customer for the ice machine.

The foregoing warranty shall not apply to (1) any part or assembly that has been altered, modified, or changed; (2) any part or assembly that has been subjected to misuse, abuse, neglect, or accidents; (3) any ice machine that has been installed and/or maintained inconsistent with the technical instructions provided by the COMPANY; or (4) any ice machine initially installed more than five years from the serial number production date. This warranty shall not apply if the Ice Machine's refrigeration system is modified with a condenser, heat reclaim device, or parts and assemblies other than those manufactured by the COMPANY, unless the COMPANY approves these modifications for specific locations in writing.

16 Part Number STH038 5/12

THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES OR GUARANTEES OF ANY

KIND, EXPRESSED OR IMPLIED, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

In no event shall the COMPANY be liable for any special, indirect, incidental or consequential damages. Upon the expiration of the warranty period, the COMPANY'S liability under this warranty shall terminate. The foregoing warranty shall constitute the sole liability of the COMPANY and the exclusive remedy of the customer or user.

To secure prompt and continuing warranty service, the warranty registration card must be completed and sent to the COMPANY within five (5) days from the installation date.

To obtain warranty service or information regarding your Product, please contact us at:

MANITOWOC ICE 2110 So. 26th St. P.O. Box 1720, Manitowoc, WI 54221-1720 Telephone: 920-682-0161 Fax: 920-683-7585 www.manitowocice.com

Part Number STH038 5/12 17

18 Part Number STH038 5/12

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Installation

Caution

Warning

The ice machine head section must be protected if it will be subjected to temperatures below 0°C (32°F). Failure caused by exposure to freezing temperatures is not covered by the warranty. See “Removal from Service/Winterization” page 36.

An ice machine contains high voltage electricity and refrigerant charge. Repairs are to be performed by properly trained refrigeration technicians aware of the dangers of dealing with high voltage electricity and refrigerant under pressure.The technician must also be certified in proper refrigerant handling and servicing procedures. All lockout and tag out procedures must be followed when working on this equipment.

Some 50 hz models may contain up to 15 grams of R290 (propane) refrigerant. R290 (propane) is flammable in concentrations of air between approximately 2.1% and 9.5% by volume (LEL lower explosion limit and UEL upper explosion limit). An ignition source at a temperature higher than 470°C is needed for a combustion to occur. Refer to nameplate to identify the type of refrigerant in your equipment. Only trained and qualified personnel aware of the dangers are allowed to work on the equipment.

Part Number STH038 5/12 19

Location of Ice Machine

Warning

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

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

• Air temperature - Minimum 1.6°C maximum 43°C.

• Ice Making Water Inlet - Water Pressure must be at least 1.38 bar, but must not exceed 5.52 bar.

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

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

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

Do not obstruct machine vents or openings.

20 Part Number STH038 5/12

Clearance Requirements

I0320 Self-Contained Air-Cooled

Top/Sides 305 mm

Back 127 mm

I0500

Top/Sides 203 mm

Back 127 mm

Self-Contained Air-Cooled

Ice Machine Heat of Rejection

Heat of Rejection

Series Ice

Machine

Conditioning*

I0320 3800 6000

I0500 6100 6900

*BTU/Hour Because the heat of rejection varies during the ice making

cycle, the figure shown is an average.

Air

Peak

Part Number STH038 5/12 21

ICE DEFLECTOR

Warning

INSTALLATION ON A BIN

An ice deflector is required for all bin installations and is included with all Manitowoc bins. Order the appropriate deflector kit for any bin without a deflector. Align sides and back of ice machine with sides and back of bin, when placing ice machine on bin..

Do not operate any ice machine with the deflector removed.

INSTALLATION ON A DISPENSER

No deflector is needed for machines that match the size of the dispenser unless required by the dispenser manufacturer. Adapters are required when a smaller ice machine is going on a larger dispenser. Align sides and back of ice machine with sides and back of dispenser/adapter, when placing ice machine on dispenser.

22 Part Number STH038 5/12

Electrical Requirements

Warning

Voltage

The maximum allowable voltage variation is +10/-0% of the rated voltage on the ice machine model/serial number plate at start-up (when the electrical load is highest).

Fuse/Breaker

A separate fuse/circuit breaker must be provided for each ice machine.

Total Circuit Ampacity

The total circuit ampacity is used to help select the wire size of the electrical supply.

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.

All wiring must conform to local, state and national codes and the appliance must be grounded.

Part Number STH038 5/12 23

24 Part Number STH038 5/12

This Page Intentionally Left Blank

Maintenance

Warning

Cleaning and Sanitizing

GENERAL

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

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

Manitowoc Ice Machine Cleaner and Sanitizer are the only products approved for use in Manitowoc ice machines.

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

Part Number STH038 5/12 25

Caution

Use only Manitowoc approved Ice Machine

Caution

Warning

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.

Do not mix Cleaner and Sanitizer solutions together. Do not use these solutions in a manner inconsistent with their labeling.

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

26 Part Number STH038 5/12

CLEANING/SANITIZING PROCEDURE

This procedure must be performed a minimum of once every six months.

• The ice machine and bin must be disassembled cleaned and sanitized.

• All ice produced during the cleaning and sanitizing procedures must be discarded.

• Removes mineral deposits from areas or surfaces that are in direct contact with water.

PREVENTATIVE MAINTENANCE CLEANING PROCEDURE

• This procedure cleans all components in the water flow path, and is used to clean the ice machine between the bi-yearly cleaning/sanitizing procedure.

EXTERIOR CLEANING

Clean the area around the ice machine as often as necessary to maintain cleanliness and efficient operation.

Wipe surfaces with a damp cloth rinsed in water to remove dust and dirt from the outside of the ice machine. If a greasy residue persists, use a damp cloth rinsed in a mild dish soap and water solution. Wipe dry with a clean, soft cloth.

The exterior panels have a clear coating that is stain resistant and easy to clean. Products containing abrasives will damage the coating and scratch the panels.

• Never use steel wool or abrasive pads for cleaning.

• Never use chlorinated, citrus based or abrasive cleaners on exterior panels and plastic trim pieces.

Part Number STH038 5/12 27

Cleaning / Sanitizing Procedure

Caution

Warning

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

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.

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

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

NOTE: Although not required and dependant on your installation, removing the ice machine top cover may allow easier access.

28 Part Number STH038 5/12

Step 1 Open the front door to access the evaporator

Caution

compartment. Ice must not be on the evaporator during the clean/sanitize cycle. Follow one of the methods below:

• Press the power switch at the end of a harvest cycle after ice falls from the evaporator(s).

• Press the power switch and allow the ice to melt

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

Step 2 Remove all ice from the bin/dispenser. Step 3 Press the clean switch. Water will flow

through the water dump valve and down the drain. Wait until the water trough refills and the display indicates add solution (approximately 1 minute), then add the proper amount of ice machine cleaner.

Model Amount of Cleaner

I0320 90 ml (3 oz) I0500 150 ml (5 oz)

Part Number STH038 5/12 29

Step 4 Wait until the clean cycle is complete

Warning

Off On / Off Mode

[ ]

(approximately 24 minutes). Then disconnect power to

the ice machine (and dispenser when used).

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

Step 5 Remove parts for cleaning..

A. Remove the water curtain

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

• Slide the left pin out.

B. Remove the water trough

• Depress tabs on right and left side of the water trough.

• Allow front of water trough to drop as you pull forward to disengage the rear pins.

30 Part Number STH038 5/12

C. Remove the water level probe

• Pull the water level probe straight down to disengage.

• Lower the water level probe until the wiring connector is visible.

• Disconnect the wire lead from the water level probe.

• Remove the water level probe from the ice machine.

D. Remove the ice thickness probe

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

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

E. Remove the water distribution tube

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

• Loosen the two outer screws (do not remove screws completely they are retained to prevent loss) and pull forward on the distribution tube to release from slip joint.

Part Number STH038 5/12 31

Step 6 Disassemble distribution tube by loosening

the two (2) middle thumbscrews and dividing. Mix a solution of cleaner and lukewarm 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

Water Mixed With

Type

Cleaner 4 L (1 gal) 500 ml (16 oz)

cleaner

Step 7 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 nylon 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.

32 Part Number STH038 5/12

Step 8 While components are soaking, use 1/2 of the

cleaner/water solution to clean all food zone 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 (area above water trough)

• Evaporator plastic parts - including top, bottom, and sides

• Bin or dispenser

Rinse all areas thoroughly with clean water.

SANITIZING PROCEDURE Step 9 Mix a solution of sanitizer and lukewarm

water.

Solution

Water Mixed With

Type

Sanitizer 12 L (3 gal) 60 ml (2 oz) sanitizer

Step 10 Use 1/2 of the sanitizer/water solution to

sanitize all removed components. Use a spray bottle 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.

Part Number STH038 5/12 33

Step 11 Use 1/2 of the sanitizer/water solution to

sanitize all food zone surfaces of the ice machine and bin (or dispenser). Use a spray bottle to liberally apply the solution. When sanitizing, pay particular attention to the following areas:

• Side walls

• Base (area above water trough)

• Evaporator plastic parts - including top, bottom and sides

• Bin or dispenser

Do not rinse the sanitized areas.

Step 12 Replace all removed components. Step 13 Wait 20 minutes. Step 14 Reapply power to the ice machine and press

the Clean button.

Step 15 Wait until the water trough refills and the

display indicates add solution (approximately 1 minute). 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

I0320 90 ml (3 oz) I0500 90 ml (3 oz)

Step 16 Select auto ice on, press the checkmark and

close and secure the front door. The ice machine will automatically start ice making after the sanitize cycle is complete (approximately 24 minutes).

34 Part Number STH038 5/12

Ice Thickness Probe & Water Level Probe

Clean the probes using the following procedure.

1. Mix a solution of Manitowoc ice machine cleaner and water 60 ml (2 oz) of cleaner to 500 ml (16 oz) of water in a container.

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

3. Clean all probe surfaces including all plastic parts (do not use abrasives). Verify all surfaces are clean. Thoroughly rinse probes with clean water.

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

Part Number STH038 5/12 35

Removal from Service/Winterization

Caution

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 0°C (32°F) or below.

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.

1. Press the power button.

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

3. Turn off the water supply.

4. Remove the water from the water trough.

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

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

7. 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 water inlet lines or the drain.

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

36 Part Number STH038 5/12

Operation

Manitowoc

Button

Power Button

LCD Display

Checkmark

Cleaning Button

Navigation Arrows

Control Panel Features

The control panel offers a series of pressure sensitive buttons and a four-line interactive display panel.

BUTTONS

Power Button: Powers the ice machine when in the

On/Off Mode. The ice machine can also be programmed to automatically power on and off in two Energy Saver modes.

Cleaning Button: Initiates a cleaning cycle. Refer to

the Maintenance section for details.

Part Number STH038 5/12 37

Menu Button: Moves the display from the Home

Screen, where ice machine status, alerts and messages are viewed, to the Main Menu, where machine information and its event log can be accessed, machine and Energy Saver settings can be adjusted, and service issues can be addressed.

Left and Righ t Arrows: The Left arrow moves the

display to the previous screen, allowing the user to “back out” of programming. Both the Left and Right arrows will move the cursor (underline) within a line of settings. NOTE: The Right arrow can also be used on many screens interchangeably with the checkmark to make a selection.

Up and Down Arrows: Move the highlight

[brackets] up one line or down one line.

Checkmark: Makes a selection and/or moves to the

next screen (or line).

DISPLAY PANEL

The LCD display panel is 16 characters wide and four lines deep. During ice machine operation and cleaning cycles, the Home screen’s top three lines provide valuable status information and the fourth line shows alerts and messages. In programming, four lines of the current screen are displayed and highlights, arrows, cursor and selections inform the user of available actions.

38 Part Number STH038 5/12

Menu Navigation Overview

On/Off Button

Menu Navigation Overview

Home Screen

When

Alert

Present

When Message Present

Alerts

Messages

Press Left Arrow From

Main Menu

Clean

Button

AuCS

Timer

Initiated

Clean

Function

AuCS

Clean

Function

Button

Main Menu Function

Machine

Info

Set-Up

Fact

Deflts

Energy

Saver

Service

Time & Date Time Config

Edit Password

Units Ice Clarity LCD Bright Password On/Off

Clean Minder AuCS Run Time Air Filter Water Filter LuminIce

Ice Program Water Miser Statistics

(Optional)

Password Entry

90/70 cap Model # IMH Serial # Cond Serial # Warranty

-Machine

-Evaporator

-Compressor Install Date Manuf Date Main SW Ver Disply SW Ver

Language

USB Setup

Ice Bin Sensor

Defaults Exit

Real Time Data Diagnostics Manual Harvest Repl Cnt Bd USB Setup Event Log

Data History

Part Number STH038 5/12 39

Display Panel Navigation

Time & Date > Time Config >

Units >

▼

[Language >]

▼

Highlights: Brackets indicate if a line on the screen

is “highlighted” or actionable. Move the brackets from line to line using the Down or Up arrow. Move the brackets down from the fourth line to view more of the menu displayed.

Arrows: Two kinds of arrows give cues to additional

information. “>” symbols show that another screen is available by pressing Checkmark while a line is highlighted. “ of the screen viewed. NOTE: Another cue to the length of a menu screen is that Exit is the last item.

▼” and “▲” symbols indicate the limits

07 24 10 14:08 Exit >

40 Part Number STH038 5/12

Cursor: A cursor (underline) is used within lines

[Mo/Day/Yr ( )]

▼

Day/Mo/Yr ( ) 12 Hour ( ) 24 Hour ( )

▼

where actual settings can be adjusted. In these screens, use the Up and Down arrows to make changes to the value underlined. Move the cursor from digit to digit using the Right and Left arrows. Use the Checkmark to move the cursor down one line. Exit and re-enter the screen to start again at the top.

Selections: When parentheses ( ) appear, they

indicate a selection is available by pressing Checkmark while the line is highlighted. If the choice is exclusive, selecting it with the Checkmark will uncheck another selection. That is, in the above Time Config example, selecting Day/Mo/Yr will deselect Mo/Day/ Yr.

Part Number STH038 5/12 41

Alerts and Messages

When messages and alerts exist, they will be highlighted and can be selected with the Left arrow. Alerts displayed will have priority over messages.

Off On / Off Mode

[ ]

For example, if alerts are appearing in the fourth line of the display:

1. Press the Left arrow. A list of alerts will appear in the display.

2. Choose the alert you wish to address by moving the highlight brackets with the Down arrow.

3. Press Checkmark again. A screen appears with the date, time and total number of times an alert has occurred. Pressing the Down arrow will list some possible causes for the alert. At the bottom of the screen you will be able to clear the alert by pressing the Checkmark.

4. Return to the Home screen by selecting Exit and pressing the Checkmark.

42 Part Number STH038 5/12

Main Menu

Machine Info

Set-Up

Energy Saver

Factory Defaults

Service

Exit

Main Menu

From the Home screen, press the Menu button to enter the Main menu, where you can choose to see machine information, make setup changes, set the Energy Saver mode, or enter the Service Menu.

Part Number STH038 5/12 43

Machine Info Menu

From the Main menu, ensure that Machine Info is highlighted and press the Checkmark to view a list including capacity, model number, IMH (Ice Machine Head) serial number, condenser serial number, warranty, installation date, date of manufacture and software version. Use the Down arrow to highlight an item and use the Checkmark to view the information. Press the Left arrow to return to previous screens.

Set-Up Language

Time & Date

Time Configuration

Units

Ice Clarity

LCD Bright

Password On

Edit Password

Clean Minder

AuCS RunTime

Air Filter

Water Filter

LUMINICE

Ice Bin Sensor

USB Setup

44 Part Number STH038 5/12

Exit

Set-Up Menu

Password Entry

A password is not required, although a password can be turned on to prevent unauthorized control setting modification. You can use the Factory Default Password of "1234" or enter a four digit custom pin number of your choosing.

To turn on the password feature use the following procedure.

1. Press the Menu button.

2. From the Main menu, use the Down arrow to highlight setup and press the Right arrow.

3. Use the Down arrow to highlight Password ON and press the Right arrow.

4. Press the Right arrow again with Enter Passwrd highlighted and an icon will flash.

5. Use the Up & Down arrows to enter the factory password (1, 2, 3, 4). Enter the number 1 in the flashing icon (first digit of the factory password).

6. Press the right arrow to move to the next cell and use the Up & Down arrows to add the number 2. Repeat this process to add 3 & 4.

7. When the last number is entered press the Checkmark button to save your entry.

Enter Passwrd

▲

[ ]

Exit >

Part Number STH038 5/12 45

To enter a four digit password of your choosing use the following procedure.

1. Press the Menu button.

2. From the Main menu, use the Down arrow to highlight setup and press the Right arrow.

3. Use the Down arrow to select Edit Password and press the Right arrow.

4. Using the Up & Down arrows, enter the first digit of the factory password in the flashing icon.

5. Press the right arrow to move to the next cell and use the Up & Down arrows to add the number 2. Repeat this process to add 3 & 4.

6. When the last number is entered press the Checkmark button.

7. Follow steps 4 & 5 and enter your 4 digit password.

8. When the last number is entered press the Checkmark button to save your entry.

46 Part Number STH038 5/12

RESET PASSWORD TO FACTORY DEFAULTS

The password can be reset to the factory defaults when required. The default factory password is 1234. To reset the ice machine to factory defaults use the following procedure.

1. Press the Menu button.

2. From the Main menu, use the Down arrow to highlight Defaults

3. Press the Checkmark button two times to reset the ice machine. The display will return to the SetUp menu and the defaults listed below will be in effect. Refer to Setup to adjust settings.

Setting Default

Language English

Time/Date Month/Day/Year/Time

Time Configuration Mo/Day/Yr/24 Hour

Units Fahrenheit/Lbs/Gallons

Ice Clarity Off

LCD Brightness Level 2

Password On Off - Enter Password

Default Password = 1234

Edit Password Off - Edit password

Clean Minder Off

AuCS RunTime Off

Air Filter Minder Off

Water Filter Minder Auto

LuminIce Bulb Minder No

Ice Bin Sensor None

Part Number STH038 5/12 47

Set-Up Menu

[Mo/Day/Yr ( )]

▼

Day/Mo/Yr ( ) 12 Hour ( ) 24 Hour ( )

▼

From the Main menu, use the Down arrow to navigate to Set-Up and press the Checkmark. Select and customize machine settings on this menu. Press the Left arrow to return to previous screens.

LANGUAGE

1. From the Set-Up menu, use the Down arrow to highlight Language.

2. Press the Checkmark. You can choose to view the display in a language other than English, by highlighting your choice and pressing the Checkmark. Selecting one language will deselect the others.

3. When the check reflects your preference, use the Down arrow to navigate to Exit and press the Checkmark. The display will return to the Set-Up menu.

TIME & DATE

When the ice machine is installed, the correct time and date needs to be set for its location

Set the Time and Date

1. Press the Menu button.

2. Press the Down arrow until Set-Up is highlighted [bracketed].

3. Press the Checkmark. The Set-Up menu will be displayed and Time & Date will be highlighted [bracketed].

48 Part Number STH038 5/12

4. Press the Checkmark. The date will appear on the first line of the display (Mo/Day/Yr) and the time will appear on the second line (24 Hour). The month will have a blinking cursor.

5. Using the Up or Down arrow, adjust the month, if necessary.

6. When the correct month appears, use the Right arrow to move the blinking cursor to day.

7. Using the Up or Down arrow, adjust the day, if necessary.

8. When the correct day appears, use the Right arrow to move the blinking cursor to year.

9. Using the Up or Down arrow, adjust the year, if necessary.

10. When the correct year appears, press the Checkmark. Use the Right arrow to move the blinking cursor to hour.

11. Using the Up or Down arrow, adjust the hour, if necessary.

12. When the correct hour appears, use the Right arrow to move the blinking cursor to minutes.

13. Using the Up or Down arrow, adjust the minutes, if necessary.

14. When the correct minutes appear, press the Checkmark twice.

Part Number STH038 5/12 49

TIME CONFIGURATION

1. From the Set-Up menu, use the Down arrow to highlight Time Config.

2. Press the Checkmark. On this screen, you can choose whether the date will be displayed as Mo/Day/Yr or Day/Mo/Yr by highlighting your choice and pressing the Checkmark. Selecting one will deselect the other.

3. You can also choose whether the time will be displayed as 12 Hour or 24 Hour by highlighting your choice and pressing the Checkmark. Selecting one will deselect the other.

4. When the two checks reflect your preference, use the Down arrow to navigate to Exit and press the Checkmark. The display will return to the Set-Up menu.

UNITS

1. From the Set-Up menu, use the Down arrow to highlight Units.

2. Press the Checkmark. On this screen, you can choose whether the ice machine will display measurements in Celsius or Fahrenheit, kilograms or pounds, and gallons or liters by highlighting your choice of each pair and pressing the Checkmark. Selecting one of each pair will deselect the other. Make sure to navigate with the Down arrow to make all three choices.

3. When the three checks reflect your preferences, use the Down arrow to navigate to Exit and press the Checkmark. The display will return to the SetUp menu.

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ICE CLARITY

In areas with poor potable water quality, the ice machine makes cloudy ice. Setting Ice Clarity to ON will add additional water during the freeze cycle to dilute the water that contains a high content of dissolved solids in the water trough. This feature decreases production and increases water usage. A water filter is recommended to produce the highest quality ice while maintaining the least expensive mode of operation.

1. From the Set-Up menu, use the Down arrow to highlight Ice Clarity.

2. Press the Checkmark. On this screen, you can choose to turn the ice clarity feature ON or OFF by highlighting your choice and pressing the Checkmark. Selecting one will deselect the other.

3. When the check reflects your preference, use the Down arrow to navigate to Exit and press the Checkmark. The display will return to the Set-Up menu.

LCD BRIGHTNESS

Here, the brightness of the LCD display can be adjusted.

1. From the Set-Up menu, use the Down arrow to highlight LCD Bright.

2. Press the Checkmark. You will see one of four checkmarks indicating the brightness levels of the display. Level 1 is one checkmark, level 2 is two checkmarks, Level 3 is three checkmarks, etc.

3. Use the Up and Down arrows to select your preference.

4. When the checkmarks reflect your preference, press the Checkmark. The display will return to the Set-Up menu.

Part Number STH038 5/12 51

PASSWORD ON

A password can be added to prevent unauthorized changes to ice machine settings.

1. From the Set-Up menu, use the Down arrow to highlight Password On.

2. Enter the password and press the Checkmark.

3. Press the Left arrow to return to previous screens and to the Set-Up menu.

EDIT PASSWORD

The password can be changed on this screen

1. From the Set-Up menu, use the Down arrow to highlight Edit Password.

2. Press the Checkmark and confirm current password.

3. Enter new password and press the Checkmark.

4. Press the Left arrow to return to previous screens and to the Set-Up menu.

CLEAN MINDER

Clean Minder is a feature that displays a cleaning reminder at a set time interval.

1. From the Set-Up menu, use the Down arrow to highlight Clean Minder.

2. Press the Checkmark. On this screen, you can choose to turn the reminder ON or OFF by highlighting your choice and pressing the Checkmark. Selecting one will deselect the other.

3. You can also choose the time interval from this screen by highlighting Set Interval and pressing the Checkmark.

4. Press the Left arrow to return to previous screens and to the Set-Up menu.

52 Part Number STH038 5/12

IAUCS RUNTIME

tomatic Cleaning System is an optional accessory

and will perform a cleaning cycle at a set time interval.

1. From the Set-Up menu, use the Down arrow to highlight AuCS RunTime.

2. Press the Checkmark. On this screen, you can choose to turn the feature ON or OFF by highlighting your choice and pressing the Checkmark. Selecting one will deselect the other.

3. You can also choose the time interval from this screen by highlighting Set Interval and pressing the Checkmark.

4. Press the Left arrow to return to previous screens and to the Set-Up menu.

AIR FILTER

The ice machine has a feature that displays a clean air filter reminder at a set time interval.

1. From the Set-Up menu, use the Down arrow to highlight Air Filter.

2. Press the Checkmark. On this screen, you can choose to turn the reminder to AUTO or OFF by highlighting your choice and pressing the Checkmark. Selecting one will deselect the other.

3. You can also choose the time interval from this screen by highlighting Set Interval and pressing the Checkmark.

4. Press the Left arrow to return to previous screens and to the Set-Up menu.

Part Number STH038 5/12 53

WATER FILTER

The ice machine has a feature that displays a replace water filter reminder at a set time interval.

1. From the Set-Up menu, use the Down arrow to highlight Water Filter.

2. Press the Checkmark. You can record the filter type on this screen by highlighting Filter Type and pressing the Checkmark.

3. After making your selection, press the Left arrow to return to the previous screen.

4. On this screen, you can also choose to turn the reminder to AUTO or OFF by highlighting your choice and pressing the Checkmark. Selecting one will deselect the other.

5. You can further choose the time interval from this screen by highlighting Set Interval and pressing the Checkmark.

6. Press the Left arrow to return to previous screens and to the Set-Up menu.

LUMINICE™ REMINDER

The LuminIce™ growth inhibitor recirculates the air in the ice machine foodzone over a UV bulb. This process will inhibit the growth of common microorganisms on all exposed foodzone surfaces.

The Bulb Minder is a feature that displays a reminder to change its bulb every 12 months.

1. From the Set-Up menu, use the Down arrow to highlight LuminIce Minder.

2. Press the Checkmark. On this screen, you can choose to turn the reminder to AUTO or OFF by highlighting your choice and pressing the Checkmark. Selecting one will deselect the other.

3. When the check reflects your preference, use the Down arrow to navigate to Exit and press the Checkmark. The display will return to the Set-Up menu.

54 Part Number STH038 5/12

USB SETUP

Refer to “Upgrading Firmware with a Flash Drive” and “Exporting Data to a Flash Drive” for more information on this setting. Flash drives must be correctly sized and formatted - 2 gigabytes or smaller, Fat 32 file system, 512 allocation units - Refer to page 69 for full specification and formatting details.

FACTORY DEFAULTS

The entire setup can be reset to the factory defaults.

1. From the Set-Up menu, use the Down arrow to highlight Fact Deflts.

2. Press the Checkmark two times to reset the ice machine. The display will return to the Set-Up menu.

Setting Default

Language English

Time/Date Month/Day/Year/Time

Time Configuration Mo/Day/Yr/24 Hour

Units Fahrenheit/Lbs/Gallons

Ice Clarity Off

LCD Brightness Level 2

Password Off - Enter Password

Default Password = 1234

Edit Password Off - Edit Password

Clean Minder Off

AuCS RunTime Off

Air Filter Minder Off

Water Filter Minder Auto

LuminIce Bulb Minder No

Ice Bin Sensor None

NOTE: For more details and instructions for changing ice machine settings, see “Set-Up Menu”.

Part Number STH038 5/12 55

Energy Saver Menu

Energy Saver Ice Program

Water Miser

Statistics

Exit

From the Main menu, use the Down arrow to navigate to Energy Saver and press the Checkmark. Set up an energy saving ice program, enable the Water Miser and view usage statistics from this menu. Press the Left arrow to return to previous screens.

Energy Saver Menu

56 Part Number STH038 5/12

ICE PROGRAM

Important

To save energy and water, the ice machine can be programmed to only power up during time periods that the ice will be used or when the bin level is being depleted by heavy use.

Setting an ice program will take the ice machine out of the On/Off Mode and the Power button will be disabled.

1. In the Energy Saver menu, ensure that Ice Program is highlighted.

2. Press the Checkmark. On this screen, you can choose to turn on the time program or the bin level program by highlighting your choice and pressing the Checkmark. Selecting one will deselect the other. If one of them is selected and you wish to turn both off, highlight the choice and press Checkmark again.

3. If neither of the programs is selected, highlighting Settings and pressing the Checkmark will simply return to the top of this screen. If one of the programs is selected, highlight Settings and press the Checkmark to choose the times or bin levels. NOTE: For details on how to use the cursor for the time program, refer to “Display Panel Navigation” in this section.

4. Select Exit to return to previous screens and again to the Energy Saver menu.

Part Number STH038 5/12 57

WATER MISER

Water Miser is a feature that reduces water usage by eliminating flush cycles. Enabling this feature is only recommended for systems with de-ionized or reverse osmosis filtering.

1. From the Energy Saver menu, use the Down arrow to highlight Water Miser.

2. Press the Checkmark. On this screen, you can choose to turn the Water Miser ON or OFF by highlighting your choice and pressing the Checkmark. Selecting one will deselect the other.

NOTE: Settings will not be saved if the Checkmark is not pressed after choosing On or Off.

3. Press the Left arrow to return to previous screens and to the Energy Saver menu.

STATISTICS

1. From the Energy Saver menu, use the Down arrow to highlight Statistics.

2. Press the Checkmark. Choose to view ice production, potable water usage or energy usage statistics by highlighting your choice and pressing the Checkmark.

3. Press the Left arrow to return to previous screens and to the Energy Saver menu.

58 Part Number STH038 5/12

Service Menu

From the Main menu, use the Down arrow to navigate to Service and press the Checkmark. This menu is intended for the use of trained service personnel. Below is an overview of the service menu. The following pages list the navigation options available by drilling into the menus with the down arrow.

Service Data History 00000000 00000000 00000000 00000000 00000000 00000000 Lifetime Exit

RealTime Data Time & Temp Inputs Outputs Exit

Diagnostics Control Board Temp Sensors Inputs Exit

Man Harvest Hrvst Started Exit

Repl Cntl Bd Manual Setup USB Setup Exit

USB Setup USB Stick Exit

Event Log View ELog Clear ELog Exit

Exit

Part Number STH038 5/12 59

Event Log

View

Clear

Service

USB Setup

Manual

Repl Cnt Bd

Harvest

Manual

Diagnostics

USB Stick

Download Firm

Setup

USB Setup

Started

Harvest

Board

Temp

Control

Export ALL

Export Setup

Download Conf

Input

Sensors

60 Part Number STH038 5/12

Data

Real Time

Data

History

Temp

Inputs

Time &

Outputs

Current Day

Current Day -1

Current Day -2

Current Day -3

Current Day -4

Current Day -5

Lifetime

DATA HISTORY

Press the Checkmark with Data History highlighted to view a list of eight-digit dates (Current, Current + 1 ... Current + 5), along with Lifetime (be sure to use the Down arrow to reveal all the available information).

For each of the dates, use the Checkmark to view:

• Minimum Freeze

• Maximum Freeze

• Minimum Harvest

• Maximum Harvest

• Maximum Temperature Delta T3 - T4

•Delta

•T3

•T4

•RunTime

• Ice Production

• Cycle Count

• Potable Water

• Clean Cycles

• Exit For Lifetime, use the Checkmark to view:

• Install Date

• Control Board Replacement Date

• Control Board DOM (Date Of Manufacture)

•RunTime

• Cycle Count

• Potable Water

• Clean Cycles

• Exit

Part Number STH038 5/12 61

REAL TIME DATA

Press the Checkmark with Real Time Data highlighted to get readings on Time & Temp, Inputs and Outputs (be sure to use the Down arrow to reveal all the available information).

Use the Checkmark to view: Time and Temperature

• Status Off/On - Displays stage of cycle

•Time

• T1 Thermistor Temperature

• T2 Thermistor Temperature

• T3 Thermistor Temperature

• T4 Thermistor Temperature

• T3 & T4 Delta Temperature

• 100 hz

• 120 hz

• Exit Inputs

• Status Off/On - Displays stage of cycle

• Curtain Switch 1

• Curtain Switch 2

• LPCO Switch

• HPCO Switch

• Bin Level - Low (Optional Bin Level Probe) Status

• Bin Level - Medium (Optional Bin Level Probe) Status

• Bin Level High (Optional Bin Level Probe) Status

• Sensing Ice No/Yes

• Water Level Low No/Yes

• Water Level High No/Yes

• Exit

62 Part Number STH038 5/12

Outputs

• Status Off/On - Displays stage of cycle

• Water Pump Off/On

• Hot Gas Valve 1 Off/On

• Hot Gas Valve 2 Off/On

• Air Pump Off/On

• Water Valve Off/On

• Dump Valve Off/On

• Compressor Control Off/On

• AuCS Relay Off/On

• LuminIce Off/On

• Exit

Part Number STH038 5/12 63

DIAGNOSTICS

Press the Checkmark with Diagnostics highlighted to enter screens where you can run diagnostics on the control board, sensors and switches.

Control Board

• Self Check

• Enable Relays

• Exit

Temperature Sensors

• T1 Thermistor Temperature

• T2 Thermistor Temperature

• T3 Thermistor Temperature

• T4 Thermistor Temperature

• Exit

Inputs

• Curtain Switch 1 Closed/Open

• Curtain Switch 2 Closed/Open

• LPCO Switch Closed/Open

• HPCO Switch Closed/Open

• Bin Level - Low (Optional Bin Level Probe) Closed/ Open

• Bin Level - Medium (Optional Bin Level Probe) Closed/Open

• Bin Level - High (Optional Bin Level Probe) Closed/Open

• Sensing Ice No/Yes

• Water Level Low No/Yes

• Water Level High No/Yes

• Exit

64 Part Number STH038 5/12

MANUAL HARVEST

Press the Checkmark with Manual Harvest highlighted to initiate a manual harvest.

Manual Harvest

• Harvest Started

• Exit

REPLACE CONTROL BOARD

Press the Checkmark with Replace Control Board highlighted to program the replacement control board. The data can copied from the defective control board (refer to exporting data to a flash drive page xx), or entered manually through the Indigo interface.

• Manual Setup

• Board Install Date

• Input Model Number

• Ice Machine serial Number

• Condenser/condensing unit serial number

• USB Setup

• Insert Drive

• Press Checkmark and wait for completion

• Exit

USB SETUP

• USB Stick

• Download Firmware Insert drive and wait for completion

• Download Configuration Insert drive and wait for completion

• Export All Insert drive and wait for completion

• Export Setup Insert drive and wait for completion

• Exit

Part Number STH038 5/12 65

EVENT LOG MENU

Event Log View ELog

Clear ELog

Exit

From the Service menu, use the Down arrow to navigate to Event Log and press the Checkmark.

Ensure View ELog is highlighted and press the Checkmark to see the first event code, when it occurred and how many times. Use the Down arrow to view information on subsequent event codes. For more information on event codes, see “Service Menu”. Use the Left arrow to return to the Event Log menu.

To clear the event log: In the Event Log Menu, use the Down arrow to highlight Clear ELog and press the Checkmark. Press the Left arrow to return to previous screens.

Event Log Menu

66 Part Number STH038 5/12

EVENT LOG

Refer to the following table for Event Code descriptions.

Code Description

E01 Long Freeze Cycle

E02 Long Harvest Cycle

E03 Input Power Loss

E04 High Condenser Temperature

E05 High Pressure Control Opened

E06 Spare

E07 Starving TXV or Low On Charge

E08 TXV Fault

E09 #1 Evaporator Flooding

E10 #2 Evaporator Flooding

E11 Refrigeration Fault

E12 Curtain Switch Fault - Open more than 12 hours

E13 Spare

E14 Spare

E15 Fan Cycle Control Fault - Lo Liquid Line Temperature

E16 Remote Condenser Fault

E17 Spare

E18 Spare

E19 Ice Thickness Probe Fault

E20 Water System Fault

E21 T1 Temperature Sensor Issue

E22 T2 Temperature Sensor Issue

E23 T3 Temperature Sensor Issue

E24 T4 Temperature Sensor Issue

E25 Bin Level Probe Low Sensor Fault

E26 Bin Level Probe Medium Sensor Fault

E27 Bin Level Probe High Sensor Fault

E28 AuCS

E29 USB Communication Fault

E30 USB Download Fault

E31 Safe Mode

E32 RS485 Communication Fault

E33 KeyBoard Fault

E34 Display Fault

Part Number STH038 5/12 67

68 Part Number STH038 5/12

Event Log Detail

E-Log Display Text Error Description

Definition

E01

Long Freeze

6 consecutive 60 Minute Freeze cycles = shut down and flash the SL#1 light on board

E02

Long Harvest

3 consecutive - 3.5 Minute Harvests logs SL#2 in memory, but runs until 500 long harvest cycles occur.

E03

Power Loss

Power Supply (Event Log only No Alarm)

When power is interrupted to the ice machine the control board will log the event in the ELOG and

stamp the loss of power on power-up.

E04

Hi Cnd Temp or Wtr Cnd Fault

Air Condenser High temp, or water Condenser High temperature

1). Liquid Line Temperature too High for Self-contained Air Cooled Ice machine = Air Cooled Condenser Fault

2). Liquid Line Temperature too High for Self-contained Water Cooled ice machine = W ater Cooled Condenser Fault

E05

HPC Fault

High Pressure Cutout (HPC)

The high pressure cutout switch (HPCO) opened

Detail Event Log Service Definition

Part Number STH038 5/12 69

E11

Refig Fault

Refrigeration System (Refrig Fault)

The compressor discharge temperature did not increase by at least 10 F, and the evaporator temperature did not decreased by at least 10 F - Measured from Refrigeration Start up to Two Minutes

into the Freeze cycle.

E12

Curtain Fault

Curtain Switch open for more than 12 hours (Curtain Fault)

The ice machine is set to ice making and remains in bin full condition for more than 12 hours.

The curtain switch is open or curtain is off.

E13 Spare

E-Log Display Text Error Description

Definition

Detail Event Log Service Definition

70 Part Number STH038 5/12

E21

T1 Fault

T1 Sensor

Each thermistor reading is monitored continuously using six second average values. During Pre-chill a thermistor had a six second average thermistor values fall outside of the valid temperature range.

E22

T2 Fault

T2 Sensor

E23

T3 Fault

T3 Sensor

E24

T4 Fault

T4 Sensor

E25

Bin Prb Fault

Bin Low Sens

Each thermistor reading is monitored continuously using six second average values. A thermistor had a six second average value outside of the valid range for more than 10 continous minutes

E26

Bin Prb Fault

Bin Med Sens

E-Log Display Text Error Description

Definition

Detail Event Log Service Definition

USB FLASH DRIVE SPECIFICATIONS AND FORMATTING

Updating firmware on Indigo™ model ice machines requires a properly formatted 2 GB or smaller USB flash drive. All USB flash drives must be formatted before use to remove any software programs or files currently on the flash drive.

USB Flash Drive Specifications:

• USB 2 Version

• 2 GB or less capacity

• Fat32 File System

• 512 MB File Allocation Unit

USB Flash Drive Formatting:

Procedure to format a USB flash drive varies with operating system software.

Windows 7 or Windows Vista Computers:

1. Insert USB flash drive; your computer may indicate:

• “Found New Hardware” follow the prompts to install the USB flash drive

• USB flash drive may auto play - Close auto play window

2. Press Windows Key and E key simultaneously to access windows explorer.

3. Right click on your USB Flash Drive.

4. Left click on “Format”.

5. Verify or select the settings below:

• USB flash drive capacity - 2 GB or less

• File System - Fat32

• Allocation Unit Size - Must be 512 MB

• Volume Label is Optional - Rename if desired

• Deselect “Perform A Quick Format” (no checkmark)

6. Left click on “Start” - You will receive a warning “Formatting will remove all data” left click “OK”. A “Format Complete” box will display when formatting is finished. Close the pop up and windows explorer.

Part Number STH038 5/12 71

Windows XP Computers:

1. Insert USB flash drive; your computer may indicate:

• “Found New Hardware” follow the prompts to install the USB flash drive

• USB flash drive may auto launch - Close auto launch window.

2. To access Disk Management:

• Left click on the Windows Start Button

• Left click on “Run”

• Type compmgmt.msc and left click on “OK”

• Left click on “Disk Management”.

3. Verify USB flash drive capacity is 2 GB or less

4. Right click on the USB flash drive, then left click on “Format” from the drop down list.

5. Verify or select the settings below:

• Volume Label is Optional - Rename if desired

• File System - Fat32

• Allocation Unit Size must be 512 MB

• Deselect “Perform A Quick Format” (no checkmark)

6. Left click on “OK” you will receive a warning -

“Formatting will remove all data” left click on “OK”, wait until formatting is complete and “status” indicates “Healthy”, then close the disk management window.

72 Part Number STH038 5/12

UPGRADING FIRMWARE WITH A FLASH DRIVE

Important

USB Setup USB Stick Download Frm

OR TRANSFERRING SETUP DATA TO MULTIPLE MACHINES

The flash drive must be formatted before using, All files and software on the flash drive are removed during the formatting process. Refer to page 69 USB Flash Drive Specifications and Formatting.

1. Drag and drop the files from your email onto a flash drive or refer to Exporting data to a flash drive to transfer settings to multiple machines.

2. Ensure that the ice machine’s power is on.

3. Press the Menu button.

4. Press the Down arrow until Service is highlighted.

5. Press the Checkmark. The Service menu will be displayed.

6. Press the Down arrow until USB Setup is highlighted.

7. Press the Checkmark. USB Stick will appear highlighted.

8. Press the Checkmark again. A submenu with Download Frm (Download Firmware) appears.

9. Ensure that Download Frm is highlighted and press the Checkmark. A display of instructions will appear.

Part Number STH038 5/12 73

RT Harvest

Compressor

LT Harvest

Pump

Display Light Micro Light Clean Light Harvest Light SL-1 Light SL-2 Light

Fuse

Thermistors

Display

RS485

Bin LED

Water Level Probe

LuminIce

Transformer

Battery

Bin Switches

Bin Thermostat

USB

Ice Thickness Probe Light

Water Level Probe Light

Right Bin Switch Light

Left Bin Switch Light

Dump Valve

Relay Lights

USB Connector

10. Follow the on-screen instructions:

11. Depending on software version either Complete,

12. Verify the new firmware version loaded by

Control Board

A. Insert Drive (Insert the flash drive into the

USB port on the ice machine’s control board.)

B. Press Check (Press the Checkmark.) C. Wait For Comp (Wait approximately 5 to 10

minutes for the Firmware upgrade to complete.

Success or the On/Off screen will appear.

navigating to Menu/Machine information/Main Software Version and verify the firmware version number.

74 Part Number STH038 5/12

EXPORTING DATA TO A FLASH DRIVE

Important

USB Setup USB Stick Export All

Data can be copied from the control board memory to a flash drive and used to transfer setup and/or cycle data to a replacement control board or to transfer setup information to multiple ice machines. Data may also be requested by service department personnel for analysis or as an aid to troubleshooting. The data files are small and can be attached to an email.

The flash drive must be formatted before using, Refer to page 71 USB Flash Drive Specifications and Formatting.

1. Ensure that the ice machine’s power is on.

2. Press the Menu button.

3. Press the Down arrow until Service is highlighted.

4. Press the Checkmark. The Service menu will be displayed.

5. Press the Down arrow until USB Setup is highlighted.

6. Press the Checkmark. USB Stick will appear highlighted.

7. Press the Checkmark again. A submenu with Export ALL and Export Setup appears.

NOTE: There are four files stored in ice machine memory:

• Asset Data - ASDATAoo.CSV

• Operating Data - OPDATAoo.CSV

• Real Time Data - RTDATAoo.CSV

• Ice Machine Settings - Settinoo.CSV

Part Number STH038 5/12 75

Select only “Ice Machine Settings” file when multiple machines will be programmed with the same user specified settings. Select “Export All” if you are installing a replacement board.

8. Highlight Export ALL or Export Setup, depending on your requirements, and press the Checkmark. A display of instructions will appear.

9. Follow these on-screen instructions to:

A. Insert Drive (Insert the flash drive into the

USB port on the ice machine’s control board.) B. Press Check (Press the Checkmark.) C. Wait For Comp (Wait approximately 5 to 10

minutes for the download to complete. D. Depending on software version either Export

Complete, Success or the On/Off screen will

appear.

SAFE OPERATION MODE

Allows the ice machine to operate up to 72 hours if the ice thickness probe (E19 fault) and/or water level probe sensors fail (E20 fault).

• When the control board starts the safe mode an alert is flashed on the LCD display to notify the end-user they have a production problem.

• The control board automatically initiates and monitors the safe mode. The control will automatically exit the safe mode if a normal signal is received from the input.

• After 72 hours the control board will enter a standby mode and turn off

NOTE: The control board needs a five cycle history to operate safe mode. If five cycles have never been successfully completed the ice machine will shut-off.

• Example - The ice machine is a new installation and the water has not been turned on. The ice machine will stop after five cycles with five long freeze cycles and five water system faults in the event log.

76 Part Number STH038 5/12

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 maintenance

procedures are not covered by the warranty.

Part Number STH038 5/12 77

ICE THICKNESS CHECK

3 mm (1/8")

ICE BRIDGE THICKNESS

PLACE 9/32” DRILL BIT

HERE TO SET INTIAL

GAP

After a harvest cycle, inspect the ice cubes in the ice storage bin. The ice thickness probe is factory-set to maintain the ice bridge thickness at 3 mm (1/8").

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 3 mm (1/8") thick.

2. If adjustment is necessary, turn the ice thickness probe adjustment screw clockwise to increase bridge thickness, counterclockwise to decrease bridge thickness. As a starting point place a 7 mm (9/32") drill bit between the ice thickness probe and the evaporator. Make final adjustments to achieve a 3 mm (1/8") thick bridge.

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

3. Make sure the ice thickness probe wire doesn’t restrict movement of the probe.

78 Part Number STH038 5/12

Ice Thickness Check

Sequence of Operation

SELF CONTAINED AIR OR WATER COOLED

NOTE: The power button must be depressed and the

water curtain/ice dampers must be in place on the evaporator before the ice machine will start.

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

1. Water Purge

Before the refrigerant compressor starts, the water pump and water dump solenoid energize to purge the ice machine of old water. This feature ensures that the ice making cycle starts with fresh water.

2. Refrigeration System Equalization and Start-Up

The harvest valve(s) and air pump(s) energize to equalize high and low side refrigeration pressure.

After 5 seconds the contactor energizes the compressor and supplies power to the condenser fan motor. After 5 seconds the harvest valve(s) and air pump(s) de-energize.

NOTE: The fan motor is wired through a fan cycle pressure control and will cycle on and off when the room temperatures is below 21°C (70°F).

Part Number STH038 5/12 79

Freeze Sequence

3. Prechill

The compressor lowers the temperature of the evaporator(s) before the water pump is energized. The water fill valve will energize and remain on until water completes the water level probe circuit.

4. Freeze

The water pump(s) energizes and water flows over the evaporator. After water contacts the water level probe the water fill valve de-energizes. The control board will automatically cycle the water fill valve within the 6 minute water fill time limit. The valve energizes once in the pre-chill and up to twice in the freeze cycle.

The freeze cycle continues until the six minute freeze lock expires and enough ice has formed to send a signal from the ice thickness probe to the control board.

Harvest Sequence

5. Water Purge

The air pump(s) (when used) and the harvest valve(s) open at the beginning of the water purge to divert hot refrigerant gas into the evaporator.

The water pump(s) continues to run, and the water dump valve energizes to purge the water in the water trough.

6. Harvest

The air pump (when used) remains energized and the harvest valve(s) remains open. 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 opens the water curtain/ice damper and bin switch.

The momentary opening and re-closing of the bin switch terminates the harvest sequence and returns the ice machine to the freeze sequence (Step 3 - 4.)

80 Part Number STH038 5/12

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/ice damper and will hold it open. After the water curtain/ice damper is held open for 30 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 or all of the ice dampers. As the water curtain/ice dampers swing back to the closed position, the bin switch re-closes and the ice machine restarts (steps 1 - 2), provided the 3 minute delay period is complete.

Control Board Timers

The control board has the following non-adjustable timers:

• The ice machine is locked into the freeze cycle for 6 minutes before a harvest cycle can be initiated. This can be overridden by initiating a manual harvest. Refer to “Manual Harvest” on page 65

• The maximum freeze time is 60 minutes at which time the control board automatically initiates a harvest sequence.

• The maximum harvest time is 3.5 minutes. The control board automatically initiates a freeze sequence when these times are exceeded.

• The maximum water fill is 6 minutes.

Part Number STH038 5/12 81

82 Part Number STH038 5/12

Single Evaporator Models

Energized Parts Chart

Ice Making

Sequence of

Operation

Water Pump

Harvest

Valve(s)

Air

Pump(s)*

Water

Inlet

Valve

Water Dump Valve

Contactor

Coil

Compressor

Condenser

Fan Motor

Length

of Time

Start-Up

1. Water Purge

On Off

Off

Off On Off Off Off

45 Seconds

2. Refrigeration

Off On On Off Off Off Off Off

5 Seconds

Part Number STH038 5/12 83

Harvest Sequence

5. Water Purge

On On On Off On On On

May Cycle

On/Off

Factory

Set at

45 Seconds

Single Evaporator Models

Energized Parts Chart (Continued)

Ice Making

Sequence of

Operation

Water Pump

Harvest

Valve(s)

Air

Pump(s)*

Water

Inlet

Valve

Water Dump Valve

Contactor

Coil

Compressor

Condenser

Fan Motor

Length

of Time

84 Part Number STH038 5/12

This Page Intentionally Left Blank

Troubleshooting

Safety Limits

In addition to standard safety controls, the control board has built in safety limit controls which protect the ice machine from major component failures.

Safety limits are stored and indicated by the control board after three cycles. The number of cycles required to stop the ice machine varies for each safety limit.

• Safety Limit 1 - If the freeze time reaches 60

minutes, the control board automatically initiates a harvest cycle. If 6 consecutive 60-minute freeze cycles occur, the ice machine stops

• Safety Limit 2 - If the harvest time reaches 3.5

minutes, the control board automatically returns the ice machine to the freeze cycle. If 500 consecutive 3.5 minute harvest cycles occur, the ice machine stops.

Part Number STH038 5/12 85

SAFETY LIMIT #1

Freeze time exceeds 60 minutes for 6 consecutive freeze cycles.

Possible cause list

Water System

• Loss of water from sump area

• Low water pressure 1.37 bar min (20 psig)

• High water pressure 5.51 bar max (80 psig)

• High water temperature 32°C max (90°F)

• Clogged water distribution tube

• Dirty/defective water fill valve

• Dirty/defective water dump valve

• Defective water pump

• Dirty/defective water level probe

Electrical System

• Low incoming voltage

• Ice thickness probe out of adjustment

• Harvest cycle not initiated electrically

• Contactor not energizing

• Compressor electrically non-operational

• Defective fan cycling control

• Defective fan motor

Miscellaneous

• High inlet air temperature

• Condenser discharge air recirculation

• Restricted air flow/dirty condenser fins

• Defective harvest valve

• Non-Manitowoc components

• Improper refrigerant charge

• Defective compressor

• TXV starving or flooding (check bulb mounting)

• Non-condensable in refrigeration system

• Plugged or restricted high side refrigerant lines or component

86 Part Number STH038 5/12

SAFETY LIMIT #2

Harvest time exceeds 3.5 minutes for 500 consecutive harvest cycles

Possible Cause Checklist

Improper Installation

• Refer to “Installation/Visual Inspection Checklist” page 102

Water System

• Loss of water from sump area

• Water area (evaporator) dirty

• Dirty/defective water dump valve

• Low water pressure 1.37 bar min (20 psig)

• Vent tube not installed on water outlet drain

• Clogged water distribution tube

• Dirty/defective water fill valve

• Defective water pump

• Water freezing behind evaporator

• Plastic extrusions and gaskets not securely mounted to the evaporator

Electrical System

• Ice thickness probe out of adjustment

• Ice thickness probe dirty

• Bin switch closed/defective

• Premature harvest

Refrigeration System

• Defective harvest valve

• TXV flooding (check bulb mounting)

• Defective fan cycling control

• Non-Manitowoc components

• Improper refrigerant charge

Part Number STH038 5/12 87

Troubleshooting By Symptom

The troubleshooting procedures follow flow charts. There are four symptoms, the symptom that you are experiencing will determine which flow chart to use. The flow chart asks yes and no questions to determine the problem. The flow chart will direct you to a procedure to correct the problem.

SYMPTOM #1

Ice Machine Stops Running

Ice machine is in Ice Making cycle

Has a History of Shutting Down

• Refer to Ice Machine Stops Running Flow Chart SYMPTOM #2

Ice Machine has a Long Freeze Cycle.

Ice Formation is Thick

Thin Ice Fill on Top or Bottom of Evaporator

Low Production

Safety Limit #1 (possible)

• Refer to Freeze Cycle Refrigeration System Operational Analysis Table

SYMPTOM #3

Ice Machine Will Not Harvest - Freeze Cycle is Normal and Ic e Cub es are N ot Mel ted A fter Harvest

Safety Limit #2 (possible)

• Refer to Refrigeration Harvest Flow Chart

Symptom #4 Ice Machine Will Not Harvest - Freeze Cycle is

Normal and Ice Cubes are Melted After Harvest

• Refer to Ice Meltout Flow Chart

88 Part Number STH038 5/12

Reset To Factory Defaults

Before starting troubleshooting procedures, reset the control board to factory defaults to prevent misdiagnosis. Before resetting to factory defaults do one of the following:

A. Copy settings to a usb device and flash

settings into the control board when diagnostics are complete.

B. Write down any customer settings so they

can be re-entered when diagnostics are complete.

This procedure also resets the password to the factory default. The default factory password is 1234. To reset the ice machine to factory defaults use the following procedure.

1. Ensure that the ice machine’s power is on.

2. Press the Menu button.

3. From the Main menu, use the Down button to highlight Fact Deflts

4. Press either the Checkmark or right arrow two times to reset the ice machine. The display will return to the Set-Up menu and the defaults listed below will be in affect. Refer to Setup to adjust settings.

Setting Default

Language English

Time/Date Month/Day/Year/Time

Time Configuration Mo/Day/Yr/24 Hour

Units Fahrenheit/Lbs/Gallons

Ice Clarity Off

LCD Brightness Level 2

Password On Off - Enter Password

Default Password = 1234

Edit Password Off - Edit password

Clean Minder Off

AuCS RunTime Off

Air Filter Minder Off

Water Filter Minder Off

Part Number STH038 5/12 89

90 Part Number STH038 5/12

SYMPTOM #1 ICE MACHINE WILL NOT RUN

Yes

START

Is the display interface

energized and functioning?

Is there an Alert or

Error Logged?

Refer to Alert/Error Log

Yes

Does the ice machine start

when the Power button is pushed?

Yes

Are there any lights on

Yes

Part Number STH038 5/12 91

Yes

Display light

flashing

heartbeat?

Install the water curtain/damper.

Line voltage at wires

55 & 56 on 9 pin control

board connector?

Supply power to the

Refer to display & control

board diagnostics

Yes

92 Part Number STH038 5/12

Press power button to

start ice making, does safety

limit light flash?

Is magnet on the

water curtain/damper

Yes

Replace the water

curtain/damper.

Yes

Ice machine starts?

Yes

Refer to bin switch

diagnostics.

Diagnosing an Ice Machine That Will Not Run

Warning

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

1. Verify primary voltage is supplied to ice machine and the fuse/circuit breaker is closed.

2. Verify the high pressure cutout is closed.

3. Verify control board fuse is okay. If the micro or display lights on the control board are energized the fuse is okay.

4. Verify all bin switches function properly. A defective bin switch can falsely indicate a full bin of ice.

5. Perform control board, display board and touch screen diagnostics. Be sure steps 1-6 were followed thoroughly. Intermittent problems are not usually related to the control board.

Part Number STH038 5/12 93

SYMPTOM #2 LOW PRODUCTION, LONG FREEZE Ice Machine has a Long Freeze Cycle.

Ice Formation is Thick or Thin on Top or Bottom of Evaporator or Low Production

How to Use the Freeze Cycle Refrigeration System Operational Analysis Table

GENERAL

These tables must be used with charts, checklists and other references to eliminate refrigeration components not listed on the tables and external items and problems which can cause good refrigeration components to appear defective. The tables list different defects that may affect the ice machine’s operation.

The items listed below must be followed to provide accurate data:

1. Before starting, see “Before Beginning Service” for a few questions to ask when talking to the ice machine owner.

2. All doors and panels must be in place.

3. Initial freeze cycle is not used for diagnostics.

4. Wait 3 minutes into the second freeze cycle before monitoring temperatures. This will allow the system to stabilize and minimizes fluctuations.

94 Part Number STH038 5/12

PROCEDURE

Step 1 Complete the “Operation Analysis” column.

Read down the left “Operational Analysis” column. Perform all procedures and check all information listed. Each item in this column has supporting reference material to help analyze each step.

While analyzing each item separately, you may find an “external problem” causing a good refrigerant component to appear bad. Correct problems as they are found. If the operational problem is found, it is not necessary to complete the remaining procedures.

Step 2 Enter Checkmarks (

).

Each time the actual findings of an item in the “Operational Analysis” column matches the published findings on the table, enter a Checkmark.

Example: Freeze cycle suction temperature is determined to be low. Enter a Checkmark in the “low” column.

Step 3 Add the Checkmarks listed under each of the four columns. Note the column number with the highest total and proceed to “Final Analysis.”

NOTE: If two columns have matching high numbers,

a procedure was not performed properly, supporting material was not analyzed correctly or the problem component is not covered by the analysis table.

Part Number STH038 5/12 95

96 Part Number STH038 5/12

SYMPTOM #2 - FREEZE CYCLE REFRIGERATION SYSTEM OPERATIONAL ANALYSIS TABLES

SINGLE EXPANSION VALVE SELF CONTAINED AIR and WATERCOOLED CONDENSER

Operational Analysis 1 2 3 4

Ice Production

Air-Temperature Entering Condenser_____________ Water Temperature Entering Ice Machine_________ Published 24 hour ice production________________ Calculated (actual) ice production_______________ NOTE: The ice machine is operating properly if the ice fill patterns is normal and ice production is within 10% of charted capacity.

Installation and Water System

All installation and water related problems must be corrected before proceeding with chart.

Part Number STH038 5/12 97

Suction Line Temperature 3 minutes into the freeze cycle

Normal or High Normal or High Low Normal or High

Freeze Cycle Suction Temperature _______ ______ _____

If suction temperature is High or Low refer to freeze cycle high or low suction temperature problem checklist page 109 to eliminate problems and/or components not listed on this table before proceeding.

Suction temperature is

High

Suction temperature is

Low or Normal

Suction temperature is

High

Suction temperature is

High

SINGLE EXPANSION VALVE SELF CONTAINED AIR and WATERCOOLED CONDENSER

Operational Analysis 1 2 3 4

98 Part Number STH038 5/12

Wait 5 minutes into the freeze cycle. Compare temperatures of

compressor discharge line

and harvest valve inlet.

The harvest valve inlet is

Hot

-and-

approaches the

temperature of a Hot

compressor discharge

line.

The harvest valve inlet is Cool enough to hold

hand on

-and-

the compressor

discharge line is Hot.

The harvest valve inlet

is Cool enough to hold

hand on

-and-

the compressor

discharge line is Cool

enough to hold hand on.

The harvest valve inlet is Cool enough to hold

hand on

-and-

the compressor

discharge line is Hot.

Discharge Line Temperature

Record freeze cycle

Discharge line

SINGLE EXPANSION VALVE SELF CONTAINED AIR and WATERCOOLED CONDENSER

Operational Analysis 1 2 3 4

Manitowoc I0320, I0500, I0320A, I0500A User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual