Manitowoc QR0130A, QR0131W, QD0132A, QD0133W, QY0134A Technician's Handbook

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America’s #1 Selling Ice Machine

Manitowoc

QM20/QM30/QM45

SM50

Q130/Q170/Q210/Q270

Undercounter

Ice Machines

Part Number 80-01111-9 7/10

Safety Notices

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

Throughout this handbook, you will see the following types of

safety notices:

Procedural Notices

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

Throughout this handbook, you will see the following typ

es of procedural notices:

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

Warning

Text in a W arning box alerts you to a potentia l personal inju ry situation. Be sure to re ad th e Warning st atement be fore procee ding, an d work carefully.

Caution

Text in a Ca ution box alerts you to a si tuation i n which you could damage the equipment. Be sure to read the Caution statement before proceeding, and work carefully.

Important

Text in an Imp ortant box provide s you with information that may help you pe rform a procedure more e fficiently. Di sregarding this information will not cause damage or injury, but it may slow you down as you work.

Read These Before Proceeding:

Caution

Proper inst allation, care and maintenance are essential for maxi mum performance and troublefree ope ration of your Manitowoc equ ipment. If you encounter pro blems n ot covere d b y this handbook, do n ot procee d, cont act Mani towoc Foodservice Grou p. W e w ill b e hap py to provid e assistance.

Important

Routine a djustments an d mai ntenance procedures ou tlined in this h andbook a re not covered by the warranty.

! Warning

PERSONAL INJURY POTENTIAL

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

! Warning

POTENTIAL PERSONAL INJURY

SITUATION

This ice machin e con tains re frigerant ch arge. Installation an d b razing of the line set s must b e performed by a prope rly trained refri geration

technician aware of the Dangers of dealing with refrigerant charged e quipment. T he technician

must also be US Government Environment al Protection Agen cy (EP A) certified in prop er refrigerant handling and servicing procedures.

We reserve the right to make product

improvements at any time. Specifications and

design are subject to change without notice.

Part Number 80-01111-9 7/10 5

Table of Contents

GENERAL INFORMATION

Model Numbers . . . . . . . . . . . . . . . . . . . . . 11

How to Read a Model Number . . . . . . . . . 12

Accessories . . . . . . . . . . . . . . . . . . . . . . . 12

Bin Caster . . . . . . . . . . . . . . . . . . . . . . 12

Manitowoc Cleaner and Sanitizer . . . . 12

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

Q130/Q170/Q210/Q270 . . . . . . . . . . . 14

QM20/QM30 . . . . . . . . . . . . . . . . . . . . 15

QM45 . . . . . . . . . . . . . . . . . . . . . . . . . 15

Ice Machine Warranty Information . . . . . 17

Owner Warranty Registration Card . . . 17

Commercial Warranty Coverage . . . . . 17

Residential Warranty Coverage . . . . . 20

INSTALLATION

Location of Ice Machine . . . . . . . . . . . . . . 23

Ice Machine Clearance Requirements . . 24

Ice Machine Heat of Rejection . . . . . . . . . 24

Leveling the Ice Machin e . . . . . . . . . . . . . 25

QM45/Q130/Q170/Q210/Q270 . . . . . . 25

SM50/QM20/QM30 . . . . . . . . . . . . . . . 26

Electrical Requirements . . . . . . . . . . . . . . 27

Voltage . . . . . . . . . . . . . . . . . . . . . . . . 27

Electrical Specifications . . . . . . . . . . . . . 28

Water Service/Drains . . . . . . . . . . . . . . . . 31

Water Supply . . . . . . . . . . . . . . . . . . . . 31

Water Inlet Lines . . . . . . . . . . . . . . . . . 31

Drain Connections . . . . . . . . . . . . . . . . 31

Cooling Tower Applications . . . . . . . . . 32

COMPONENT IDENTIFICATION

QM45/Q130/Q170/Q210/Q270 . . . . . . . . . 37

QM20/QM30 . . . . . . . . . . . . . . . . . . . . . . . . 39

SM50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

MAINTENANCE

Ice Machine Inspection . . . . . . . . . . . . . . 43

Exterior Cleaning . . . . . . . . . . . . . . . . . . . 43

6 Part Number 80-01111-9 7/10

Cleaning the Condenser . . . . . . . . . . . . . 43

Air-cooled Condenser . . . . . . . . . . . . . 44

Water-cooled Condenser and 

Water Regulating Valve . . . . . . . . . . . 44

QM45/Q130/Q170/Q210/Q270 . . . . . . . . . 45

Interior Cleaning and Sanitizing . . . . . 45

QM20/QM30 . . . . . . . . . . . . . . . . . . . . . . . 60

Cleaning and Sanitizing Procedure . . 60

SM50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Cleaning Procedure . . . . . . . . . . . . . . 67

Sanitizing Procedure . . . . . . . . . . . . . 68

Removal of Parts for Cleaning and

Sanitizing . . . . . . . . . . . . . . . . . . . . . . 69

Removal from Service/Winterization . . . 77

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

Air-cooled Ice Machines . . . . . . . . . . . 77

Water-cooled Ice Machines . . . . . . . . 78

OPERATION

QM45/Q130/Q170/Q210/Q270 . . . . . . . . . 79

Initial Start-up or Start-up After 

Automatic Shut-off . . . . . . . . . . . . . . . 79

Freeze Sequence . . . . . . . . . . . . . . . . 79

Harvest Sequence . . . . . . . . . . . . . . . 80

Automatic Shut-off . . . . . . . . . . . . . . . 80

Energized Parts Chart . . . . . . . . . . . . 81

QM20/QM30 . . . . . . . . . . . . . . . . . . . . . . . 83

Initial Start-up or Start-up After 

Automatic Shut-off . . . . . . . . . . . . . . . 83

Freeze Sequence . . . . . . . . . . . . . . . . 83

Harvest Sequence . . . . . . . . . . . . . . . 84

Automatic Shut-off . . . . . . . . . . . . . . . 84

Energized Parts Chart . . . . . . . . . . . . 85

SM50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Initial Start-up or Start-up After 

Automatic Shut-off . . . . . . . . . . . . . . . 86

Energized Parts Chart . . . . . . . . . . . . 88

Operational Checks . . . . . . . . . . . . . . . . . 89

QM45/Q130/Q170/Q210/Q270 . . . . . 89

QM20/QM30 . . . . . . . . . . . . . . . . . . . . 92

SM50 . . . . . . . . . . . . . . . . . . . . . . . . . 95

Part Number 80-01111-9 7/10 7

TROUBLESHOOTING

QM45/Q130/Q170/Q210/Q270 . . . . . . . . . 99

Diagnosing an Ice Machine

that Will Not Run . . . . . . . . . . . . . . . . . 99

Diagnosing Ice Thickness Control 

Circuitry . . . . . . . . . . . . . . . . . . . . . . . . 100

Ice Production Check . . . . . . . . . . . . . 103

Installation and Visual Inspection 

Checklist . . . . . . . . . . . . . . . . . . . . . . . 104

Water System Checklist . . . . . . . . . . . 105

Ice Formation Pattern . . . . . . . . . . . . . 106

Safety Limit Feature . . . . . . . . . . . . . . 108

Analyzing Discharge Pressure . . . . . . 115

Analyzing Suction Pressure . . . . . . . . 117

Hot Gas Valve . . . . . . . . . . . . . . . . . . . 121

Comparing Evaporator Inlet/Outlet

Temperatures . . . . . . . . . . . . . . . . . . . 125

Discharge Line Temperature Analysis 126 Refrigeration Component Diagnostic 

Chart . . . . . . . . . . . . . . . . . . . . . . . . . . 128

Final Analysis . . . . . . . . . . . . . . . . . . . 130

Refrigeration Component Diagnostic Chart 131

QM20/QM30 . . . . . . . . . . . . . . . . . . . . . . . . 134

Diagnosing an Ice Machine

that Will Not Run . . . . . . . . . . . . . . . . . 134

Refrigeration Diagnostics . . . . . . . . . . 135

Ice Formation Pattern . . . . . . . . . . . . . 137

QM45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

Electrical . . . . . . . . . . . . . . . . . . . . . . . 139

Refrigeration Diagnostics . . . . . . . . . . 140

Flooding Expansion Valve . . . . . . . . . . 143

Starving Expansion Valve/

Low Refrigerant Charge . . . . . . . . . . . 143

Overcharged System . . . . . . . . . . . . . 143

SM50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

Diagnosing an Ice Machine

that Will Not Run . . . . . . . . . . . . . . . . . 144

Ice Machine Will Not Harvest . . . . . . . 145

Ice Quality Is Poor — Cubes are 

Shallow, Incomplete or White . . . . . . . 146

8 Part Number 80-01111-9 7/10

Freeze Cycle Is Long, Low Ice 

Production . . . . . . . . . . . . . . . . . . . . . 147

Ice Machine Runs and No Ice 

Is Produced . . . . . . . . . . . . . . . . . . . . 148

Analyzing Discharge Pressure . . . . . . 149

Discharge Pressure High Checklist . . 150 Freeze Cycle Discharge Pressure Low

Checklist . . . . . . . . . . . . . . . . . . . . . . . 150

Analyzing Suction Pressure . . . . . . . . 151

Hot Gas Valve . . . . . . . . . . . . . . . . . . 154

COMPONENT CHECK PROCEDURES

Main Fuse . . . . . . . . . . . . . . . . . . . . . . . . . 159

Function . . . . . . . . . . . . . . . . . . . . . . . 159

Specifications . . . . . . . . . . . . . . . . . . . 159

Check Procedure . . . . . . . . . . . . . . . . 159

Bin Switch . . . . . . . . . . . . . . . . . . . . . . . . 160

QM45/Q130/Q170/Q210/Q270 . . . . . 160

Bin Thermostat . . . . . . . . . . . . . . . . . . . . 164

QM20/QM30 . . . . . . . . . . . . . . . . . . . . 164

SM50 . . . . . . . . . . . . . . . . . . . . . . . . . 166

Liquid Line Thermistor . . . . . . . . . . . . . . 169

QM20/QM30/SM50 . . . . . . . . . . . . . . . 169

Diagnosing Start Components . . . . . . . . 171

Capacitor . . . . . . . . . . . . . . . . . . . . . . 171

Relay . . . . . . . . . . . . . . . . . . . . . . . . . 171

ON/OFF/WASH Toggle Switch . . . . . . . . 172

Function . . . . . . . . . . . . . . . . . . . . . . . 172

Specifications . . . . . . . . . . . . . . . . . . . 172

Check Procedure . . . . . . . . . . . . . . . . 172

QM45/Q130/Q170/Q210/Q270 . . . . . 173

QM20/QM30 . . . . . . . . . . . . . . . . . . . . 173

Ice Thickness Probe . . . . . . . . . . . . . . . . 174

QM45/Q130/Q170/Q210/Q270 . . . . . 174

Ice Thickness Check . . . . . . . . . . . . . 175

Compressor Electrical Diagnostics . . . . 176

Check Resistance (Ohm) Values . . . . 176

Single Phase Compressors . . . . . . . . 176

Check Motor Windings to Ground . . . 176 Compressor Drawing Locked Rotor . . 177

Compressor Drawing High Amps . . . . 177

Fan Cycle Control . . . . . . . . . . . . . . . . . . 178

QM45/Q130/Q170/Q210/Q270 . . . . . 178

Part Number 80-01111-9 7/10 9

High Pressure Cutout (HPCO) Control . . 179

QM45/Q130/Q170/Q210/Q270 . . . . . . 179

Filter-Driers . . . . . . . . . . . . . . . . . . . . . . . . 180

Liquid Line Filter Drier . . . . . . . . . . . . . 180

Refrigerant Recovery/Evacuation . . . . . . 181

Definitions . . . . . . . . . . . . . . . . . . . . . . 181

Refrigerant Re-use Policy . . . . . . . . . . 182

Recovery and Recharging . . . . . . . . . . 184

System Contamination Cleanup . . . . . . . 190

General . . . . . . . . . . . . . . . . . . . . . . . . 190

Determining Severity of Contamination 190 Mild System Contamination Cleanup

Procedure . . . . . . . . . . . . . . . . . . . . . . 192

Severe System Contamination Cleanup

Procedure . . . . . . . . . . . . . . . . . . . . . . 193

Replacing Pressure Controls without

Removing Refrigerant Charge . . . . . . . 194

Q270 Condenser Fan Motor 

Replacement . . . . . . . . . . . . . . . . . . . . . . . 196

Brazing Procedures for Danf oss Solenoid

Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197

COMPONENT SPECIFICATIONS

Main Fuse . . . . . . . . . . . . . . . . . . . . . . . . . 199

Bin Switch . . . . . . . . . . . . . . . . . . . . . . . . . 199

QM45/Q130/Q170/Q210/Q270 . . . . . . 199

Bin Thermostat . . . . . . . . . . . . . . . . . . . . . 199

QM20/QM30/SM50 . . . . . . . . . . . . . . . 199

ON/OFF/WASH Toggle Switch . . . . . . . . . 199

Fan Control Cycle . . . . . . . . . . . . . . . . . . . 199

QM45/Q130/Q170/Q210/Q270 . . . . . . 199

High Pressure Cutout (HPCO) Control . . 200

Filter-Driers . . . . . . . . . . . . . . . . . . . . . . . . 200

Liquid Line Thermistor . . . . . . . . . . . . . . . 200

QM20/QM30/SM50 . . . . . . . . . . . . . . . 200

Total System Refrigerant Charge . . . . . . 201

10 Part Number 80-01111-9 7/10

CHARTS

Cycle Times, 24 Hr. Ice Production an d

Refrigerant Pressure Charts . . . . . . . . . . 203

QM20 Self-contained Air-cooled . . . . . 204

QM30 Self-contained Air-cooled . . . . . 205

QM45 Self-contained Air-cooled . . . . . 206

QM45 Operating Temperatures . . . . . 207

SM50 Self-contained Air-cooled . . . . . 208

Q130 Self-contained Air-cooled  (Before Serial Number 310047287) . . 209 Q130 Self-contained Air-cooled

(After Serial Number 310047287) . . . . 210

Q130 Self-contained Water-cooled . . 211

Q170 Self-contained Air-cooled . . . . . 212

Q210 Self-contained Air-cooled . . . . . 213

Q210 Self-contained Water-cooled . . 214

Q270 Self-contained Air-cooled . . . . . 215

Q270 Self-contained Water-cooled . . 216

DIAGRAMS

Wiring Diagrams . . . . . . . . . . . . . . . . . . . 217

QM20 . . . . . . . . . . . . . . . . . . . . . . . . . 218

QM30 . . . . . . . . . . . . . . . . . . . . . . . . . 219

QM30 . . . . . . . . . . . . . . . . . . . . . . . . . 220

QM45 . . . . . . . . . . . . . . . . . . . . . . . . . 221

SM50 . . . . . . . . . . . . . . . . . . . . . . . . . 222

Q130/Q210 . . . . . . . . . . . . . . . . . . . . . 223

Q130/Q170/Q210 . . . . . . . . . . . . . . . . 224

Q270 . . . . . . . . . . . . . . . . . . . . . . . . . . 225

Q270 . . . . . . . . . . . . . . . . . . . . . . . . . . 226

Electronic Control Boards . . . . . . . . . . . 227

Tubing Schematics . . . . . . . . . . . . . . . . . 230

Part Number 80-01111-9 7/10 11

General Information

Model Numbers

This manual covers the following models:

*QM Models – the suffix E represents 230 volt/1 ph/50 hz machine.

Self-contained

Air-cooled

Self-contained

Water-cooled

QM20A* N/A

QM30A* N/A

QM45A* N/A

SM50A N/A

QR0130A QR0131W

QD0132A QD0133W

QY0134A QY0135W

QD0172A N/A

QY0174A N/A

QR0210A QR0211W

QD0212A QD0213W

QY0214A QY0215W

QR0270A QR0271W

QD0272A QD0273W

QY0274A QY0275W

! Warning

An ice machin e con tains h igh voltage electricity and refri gerant ch arge. Rep airs are to b e performed by properly trained refri geration technicians aware of the dangers of d ealing with high vol tage e lectricity and refrigera nt und er pressure.

12 Part Number 80-01111-9 7/10

How to Read a Model Number

Accessories

Contact your Manitowoc distributor for these optional accessories:

BIN CASTER

Replaces standard legs.

MANITOWOC CLEANER AND SANITIZER

Manitowoc Ice Machine Cleaner and Sanitizer are available in convenient 16 oz. (473 ml) and 1 gal (3.78 l) bottles. These are the only cleaner and sanitizer approved for use with Manitowoc products.

* This cleaner must be used with all SM50 ice machines. Evaporator

damage will result with repeated use or high concentrations of P/N 94-0565-3 cleaner with SM50 ice machines.

Cleaner Part Number Sanitizer Part Number

16 oz 94-0456-3 16 oz 94-0565-3

*16 oz 000000084

1 Gallon 4-0580-3 1 Gallon 94-0581-3

A - Air-cooled W - Water-cooled

0 - Regular, Air-cooled 1 - Regular, Water-cooled 2 - Dice, Air-cooled 3 - Dice, Water-cooled 4 - Half-dice, Air-cooled 5 - Half-dice, Water-cooled

Series

Condenser

Type

Capacity

Q R 0130 A

R - Regular D - Dice Y - Half-dice

Cube Size

Part Number 80-01111-9 7/10 13

NOTE: The Manitowoc Automatic Cleaning System (AuCS

) accessory cannot be used with Undercounter ice machines SM50, QM20, QM30, QM45, Q130, Q170, Q210, or Q270.

QM20, QM30, QM45 ice machines do not have a water curtain covering the evaporator. Q130, Q210, Q170, Q270 have an ice damper that performs the

functions of the water curtain see Ice Damper Removal/Installation for Details.

Caution

Use only Ma nitowoc app roved Ice Machine Cleaner (part nu mber 9 4-0546-3 original gre en ice machin e cleaner or 000 000084 clea r met al safe ice ma chine clea ner) a nd San itizer (p art number 94-0565-3). It is a viola tion of Federal law to use th ese so lutions in a manner inconsistent with thei r l abeling. Re ad a nd understand all lab els printed on bottles before use.

14 Part Number 80-01111-9 7/10

Model/Serial Number Location

The model and serial 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 ice machine.

Q130/Q170/Q210/Q270

Model/Serial Number Location

MODEL/SERIAL

NUMBER PLATE

MODEL/SERIAL

NUMBER PLATE

SV1687G

Part Number 80-01111-9 7/10 15

QM20/QM30

QM45

MODEL/SERIAL

NUMBER PLATE

MODEL/SERIAL

NUMBER PLATE

SV1599

MODEL/SERIAL

NUMBER

PLATE

MODEL/SERIAL

NUMBER PLATE

SV1732

16 Part Number 80-01111-9 7/10

SM50

MODEL/SERIAL

NUMBER PLATE

Part Number 80-01111-9 7/10 17

Ice Machine Warranty Information

OWNER WARRANTY REGISTRATION CARD General

Warranty coverage begins the day the ice machine is installed.

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

COMMERCIAL 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 representative or Manitowoc Ice, if you need further warranty information.

Parts

Q130/Q170/Q210/Q270

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

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

SM50/QM20/QM30/QM45

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

Important

Complete and mail the OWNER W ARRANTYREGISTRATION C ARD as soo n as p ossible to validate the installation date.

18 Part Number 80-01111-9 7/10

Labor

Q130/Q170/Q210/Q270

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 (Q130/ Q170/Q210/Q270 only).

SM50/QM20/QM30/QM45

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

Exclusions

The following items are not included in the ice machine’s warranty coverage:

1. Normal maintenance, adjustments and cleaning as outlined in this manual.

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

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

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

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

6. Damage or problems caused by installation, cleaning and/or maintenance procedures inconsistent with the technical instructions provided in this manual.

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

Part Number 80-01111-9 7/10 19

Authorized Warranty Service

To comply with the provisions of the warranty, a refrigeration service company qualified and authorized by your Manitowoc distributor, or a Contracted Service Representative must perform the warranty repair.

Service Calls

Normal maintenance, adjustments and cleaning as outlined in this manual are not covered by the warranty.

20 Part Number 80-01111-9 7/10

RESIDENTIAL WARRANTY COVERAGE What Does this Limited Warranty Cover?

Subject to the exclusions and limitations below, Manitowoc Ice (“Manitowoc”) warrants to the original consumer that any new ice machine manufactured by Manitowoc (the “Product”) shall be free of defects in material or workmanship for the warranty period outlined below under normal use and maintenance, and upon proper installation and start-up in accordance with the instruction manual supplied with the Product.

How Long Does this Limited Warranty Last?

Who is Covered by this Limited Warranty?

This limited warranty only applies to the original consumer of the Product and is not transferable.

What are MANITOWOC ICE’S Obligations Under this Limited Warranty?

If a defect arises and Manitowoc receives a valid warranty claim prior to the expiration of the warranty period, Manitowoc shall, at its option: (1) repair the Product at Manitowoc’s cost, including standard straight time labor charges, (2) replace the Product with one that is new or at least as functionally equivalent as the original, or (3) refund the purchase price for the Product. Replacement parts are warranted for 90 days or the balance of the original warranty period, whichever is longer. The foregoing constitutes Manitowoc’s sole obligation and the consumer’s exclusive remedy for any breach of this limited warranty. Manitowoc’s liability under this limited warranty is limited to the purchase price of Product. Additional expenses including, without limitation, service travel time, overtime or premium labor charges, accessing or removing the Product, or shipping are the responsibility of the consumer.

Product Covered Warranty Period

Ice Machine Twelve (12) months

from the sale date

Part Number 80-01111-9 7/10 21

What Is Not Covered?

This limited warranty does cover, and you are solely responsible for the costs of: (1) periodic or routine maintenance, (2) repair or replacement of the Product or parts due to normal wear and tear, (3) defects or damage to the Product or parts resulting from misuse, abuse, neglect, or accidents, (4) defects or damage to the Product or parts resulting from improper or unauthorized alterations, modifications, or changes; and (5) defects or damage to any Product that has not been installed and/or maintained in accordance with the instruction manual or technical instructions provided by Manitowoc. To the extent that warranty exclusions are not permitted under some state laws, these exclusions may not apply to you.

EXCEPT AS STATED IN THE FOLLOWING SENTENCE, THIS LIMITED WARRANTY IS THE SOLE AND EXCLUSIVE WARRANTY OF MANITOWOC WITH REGARD TO THE PRODUCT. ALL IMPLIED WARRANTIES ARE STRICTLY LIMITED TO THE DURATION OF THE LIMITED WARRANTY APPLICABLE TO THE PRODUCTS AS STATED ABOVE, INCLUDING BUT NOT LIMITED TO, ANY WARRANTY OF MERCHANTABILITY OR OF FITNESS FOR A PARTICULAR PURPOSE.

Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you.

IN NO EVENT SHALL MANITOWOC OR ANY OF ITS AFFILIATES BE LIABLE TO THE CONSUMER OR ANY OTHER PERSON FOR ANY INCIDENTAL, CONSEQUENTIAL OR SPECIAL DAMAGES OF ANY KIND (INCLUDING, WITHOUT LIMITATION, LOSS OF PROFITS, REVENUE OR BUSINESS) ARISING FROM OR IN ANY MANNER CONNECTED WITH THE PRODUCT, ANY BREACH OF THIS LIMITED WARRANTY, OR ANY OTHER CAUSE WHATSOEVER, WHETHER BASED ON CONTRACT, TORT OR ANY OTHER THEORY OF LIABILITY.

Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you.

22 Part Number 80-01111-9 7/10

How State Law Applies

This limited warranty gives you specific legal rights, and you may also have rights that vary from state to state or from one jurisdiction to another.

Registration Card

To secure prompt and continuing warranty service, this warranty registration card must be completed and sent to Manitowoc within thirty (30) days from the sale date. Complete the following registration card and send it to Manitowoc at the address shown above. Retain a copy for your records.

HOW TO OBTAIN WARRANTY SERVICE

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

MANITOWOC ICE

2110 S. 26

St.,

P.O. Box 1720

Manitowoc, WI 54221-1720

Telephone: 920-682-0161 Fax: 920-683-7585

www.manitowocice.com

Part Number 80-01111-9 7/10 23

Installation

Location of Ice Machine

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

• The location must be indoors.

• The location must be free of airborne and other

contaminants.

• Air temperature:

• Q130/Q170/Q210/Q270/QM45 must be at least 40°F (4°C) but must not exceed 110°F (43.4°C).

• QM20/QM30 must be at least 50°F (10°C) but must not exceed 113°F (45°C).

• SM50 must be at least 50°F (10°C) but must not exceed 110°F (43°C).

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

• The location must be capable of supporting the weight of the ice machine and a full bin of ice.

• The location must allow enough clearance for

water, drain, and electrical connections in the rear

of the ice machine.

• The location must not obstruct airflow through or around the ice machine (condenser airflow is in and out the front). Refer to the chart below for clearance requirements.

• The ice machine must be protected if it will be subjected to temperatures below 32°F (0°C). Failure caused by exposure to freezing temperatures is not covered by the warranty.

24 Part Number 80-01111-9 7/10

Ice Machine Clearance Requirements

*NOTE: The ice machine may be built into a cabinet.

There is no minimum clearance requirement for the top or left and right sides of the ice machine. The listed values are recommended for efficient operation and servicing only.

Ice Machine Heat of Rejection

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

the figure shown is an average.

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

Self-contained

Air-cooled

Self-contained

Water-cooled

Top/Sides 5" (127 mm)* 5" (127 mm)*

Back 5" (127 mm)* 5" (127 mm)*

Series

Ice Machine

Heat of Rejection*

Air Conditioning** Peak

SM50 1145 2300

QM20 1450 2100

QM30 1600 2350

QM45 1750 2600

Q130 2100 3300

Q170 2200 2600

Q210 2400 3400

Q270 3800 6000

Part Number 80-01111-9 7/10 25

Leveling the Ice Machine

QM45/Q130/Q170/Q210/Q270

1. Screw the leveling legs onto the bottom of the ice machine.

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

3. Move the ice machine into its final position.

4. Level the ice machine to ensure that the siphon system functions correctly. Use a level on top of the ice machine. Turn each foot as necessary to level the ice machine from front to back and side to side.

NOTE: An optional 2-1/2" (6.35 cm) caster assembly is available for use in place of the legs on the Q130, Q170, Q210, Q270, or QM45. Installation instructions are supplied with the casters.

Leg Installation

Caution

The leg s must be screwe d in tightly to preven t them from bending.

THREAD

LEVELING LEG

INTO BASE OF

CABINET

THREAD “FOOT”

IN AS FAR AS

POSSIBLE

SV1606

26 Part Number 80-01111-9 7/10

SM50/QM20/QM30

After moving the ice machine into the installation location, it must be leveled for proper operation. Follow these steps to level the ice machine:

1. Use a level to check the levelness of the ice machine from front to back and from side to side.

2. If the ice machine is not level, adjust the leveling glides or legs on each corner of the base of the ice machine as necessary.

3. Check the levelness of the ice machine after each adjustment.

4. Repeat steps 2 and 3 until the ice machine is level from front to back and from side to side.

Levelers

Legs

SV1705

SV1606SV1679B

Part Number 80-01111-9 7/10 27

Electrical Requirements

VOLTAGE

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

The 115/1/60 ice machines are factory pre-wired with a 6' (1.8 m) power cord, and NEMA 5-15P-plug configuration.

The 208-230/1/60 and 230/1/50 ice machines are factory pre-wired with a power cord only, no plug is supplied.

FUSE/CIRCUIT BREAKER

A separate fuse/circuit breaker must be provided for each ice machine. Circuit breakers must be H.A.C.R. rated (does not apply in Canada).

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.

28 Part Number 80-01111-9 7/10

Electrical Specifications

Q130/Q170/Q210/Q270 Air-cooled Ice Machine

Ice Machine

Voltage

Phase Cycle

Max. Fuse/

Circuit

Breaker

Total

Amps

Q130

(Before

Serial Number

310047287)

115/1/60 15 amp 7.6

208-230/1/60 15 amp 3.3

230/1/50 15 amp 3.3

Q130

(After

Serial Number

310047287)

115/1/60 15 amp 7.0

208/1/60 15 amp 3.1

230/1/50 15 amp 3.0

Q170 115/1/60 15 amp 7.0

Q210

115/1/60 15 amp 6.5

208-230/1/60 15 amp 3.6

230/1/50 15 amp 3.6

Q270

Danfoss

115/1/60 15 amp 10.7

208-230/1/60 15 amp 5.2

230/1/50 15 amp 5.2

Q270

Tecumseh

115/1/60 15 amp 8.5

208-230/1/60 15 amp 4.5

230/1/50 15 amp 4.5

Part Number 80-01111-9 7/10 29

Q130/Q210/Q270 Water-cooled Ice Machine

Ice Machine

Voltage

Phase Cycle

Max. Fuse/

Circuit

Breaker

Total

Amps

Q130

(Before

Serial Number

310047287)

115/1/60 15 amp 6.8

208-230/1/60 15 amp 2.8

230/1/50 15 amp 2.8

Q130

(After

Serial Number

310047287)

115/1/60 15 amp 6.3

208/1/60 15 amp 2.6

230/1/50 15 amp 2.5

Q210

115/1/60 15 amp 6.1

208-230/1/60 15 amp 3.1

230/1/50 15 amp 3.1

Q270

Danfoss

115/1/60 15 amp 9.9

208-230/1/60 15 amp 4.7

230/1/50 15 amp 4.7

Q270

Tecumseh

115/1/60 15 amp 7.7

208-230/1/60 15 amp 4.0

230/1/50 15 amp 4.0

Warning

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

! Warning

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

30 Part Number 80-01111-9 7/10

QM20/QM30/QM45 Air-cooled Ice Machine

SM50 Air-cooled Ice Machine

Ice

Machine

V oltage Phase

Cycle

Max. Fuse/

Circuit

Breaker

Total

Amps

QM20

115/1/60 15 amp 3.5

230/1/50 15 amp 1.5

QM30

115/1/60 15 amp 5.3

230/1/50 15 amp 2.6

QM45

115/1/60 15 amp 5.2

230/1/50 15 amp 2.6

Ice

Machine

V oltage Phase

Cycle

Max. Fuse/

Circuit

Breaker

Total

Amps

SM50 115/1/60 15 amp 4.1

Part Number 80-01111-9 7/10 31

Water Service/Drains

WATER SUPPLY

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

WATER INLET LINES

Follow these guidelines to install water inlet lines:

• Do not connect the ice machine to a hot water

supply. Be sure all hot water restrictors installed for other equipment are working. (Check valves on sink faucets, dishwashers, etc.)

• If water pressure exceeds the maximum

recommended pressure, 80 psig (5.5 bar) obtain a water pressure regulator from your Manitowoc distributor.

• Install a water shut-off valve for ice making potable

water.

• 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.

Important

If yo u are inst alling a Man itowoc w ater filter system, refer to t he Installation Inst ructions supplied with the filter system for ice making water inlet connections.

32 Part Number 80-01111-9 7/10

COOLING TOWER APPLICATIONS Water Cooled Models Only

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

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

• Water flow through the condenser must not exceed 5 gallons (19 liters) per minute.

• Allow for a pressure drop of 7 psig (.48 bar) between the condenser water inlet and the outlet of the ice machine.

• Water exiting the condenser must not exceed 110°F (43.3°C).

Caution

Plumbing must conform to state and local codes

Part Number 80-01111-9 7/10 33

WATER SUPPLY AND DRAIN LINE SIZING/ CONNECTIONS

QM45/Q130/Q170/Q210/Q270

T ubing Size Up to

Ice Machine

Fitting

3/8" (9.5 mm) min.

inside diameter

3/8" (9.5 mm) min.

inside diameter

3/8" (9.5 mm) min.

inside diameter

1/2" (12.7 mm)

min. inside

diameter

Ice Machine

Fitting

3/8" Female

Pipe Thread

3/8" Female

Pipe Thread

3/8" Female

Pipe Thread

1/2" Female

Pipe Thread

Water

Pressure

20 psi (1.38 bar) min.

80 psi (5.5 bar) max.

20 psi (1.38 bar) min.

150 psi (10.3 bar) max.

—

Water

Temperature

33°F (0.6°C) min.

90°F (32.2°C) max.

33°F (0.6°C) min.

90°F (32.2°C) max.

—

Location

Ice Making

Water Inlet

Condenser

Water Inlet

Condenser

Water Drain

Bin Drain

34 Part Number 80-01111-9 7/10

QM20/QM30

T ubing Size Up to

Ice Machine

Fitting

3/8" (.95 cm) min.

inside diameter

5/8" (1.59 cm) min.

inside diameter

Ice Machine

Fitting

3/4" Male

Connection

5/8" (1.59 cm)

inside

diameter

flexible hose

Water

Pressure

34.8 psi (2.4 bar) min.

89.9 psi (6.2 bar) max.

—

Water

Temperature

50°F (10°C) min.

86°F (30°C) max.

—

Location

Ice Making

Water Inlet

Bin Drain

Part Number 80-01111-9 7/10 35

SM50

Tubing Size Up to

Ice Machine

Fitting

1/4" (.64 cm) min.

inside diameter

3/4" (1.9 cm) min.

inside diameter

3/8" (.96 cm) min.

inside diameter

Note: If air temperature is less than 60°F (15.5°C) water temperature must be equal or greater

than 50°F (10°C).

Ice Machine

Fitting

1/4" (.64 cm)

ID Copper

Tubing

3/4" (1.9 cm)

Hose Barb

3/8" (.96 cm)

Hose

Water

Pressure

20 psi (1.38 bar) min.

80 psi (5.5 bar) max.

—

Water

Temperature

50°F (10°C) min.

90°F (32.2°C) max.

—

Location

Ice Making

Water Inlet

Bin Drain

Drain Pump

36 Part Number 80-01111-9 7/10

This Page Intentionally Left Blank

Part Number 80-01111-9 7/10 37

Component Identification

QM45/Q130/Q170/Q210/Q270

Evaporator Compartment

ICE THICKNESS

PROBE

DISTRIBUTION

TUBE (Q210/Q270

SHOWN)

EVAPORATOR

(Q210/Q270

SHOWN)

WATER

TROUGH

ICE

DAMPER

WATER

PUMP

SV1694A

FLOAT VALVE

BIN SWITCH

MAGNET

SIPHON CAP

SV1695A

38 Part Number 80-01111-9 7/10

QM45/Q130/Q170/Q210 Ice Machines

Q270 Ice Machines

ON/OFF/WASH

TO GG L E

SWITCH

CONDENSER AIR

FILTER

COMPRESSOR

COMPARTMENT

ACCESS SCREWS

SV1686G

CONDENSER AIR FILTER

ON/OFF/WASH

TOGGLE SWITCH

COMPRESSOR

COMPARTMENT ACCESS

SCREWS

PT1288

Part Number 80-01111-9 7/10 39

QM20/QM30

WATER

DISTRIBUTION

TUBE

WATER

PUMP

OUTLET

HOSE

WATER PUMP

AND

BRACKET

ASSEMBLY

EVAPORATOR

ASSEMBLY

WATER

TROUGH

OVERFLOW

TUBE

SV1716A

40 Part Number 80-01111-9 7/10

QM20 Ice Machines

QM30 Ice Machines

SV1711

ON/OFF/WASH

TO GG L E SWITCH

SV1681A

ON/OFF/WASH

TO GG LE SWITCH

CONDENSER

AIR FILTER

Part Number 80-01111-9 7/10 41

SM50

CONTROL

PANEL

EVAPORATOR

COMPARTMENT

WATER

FILTER

GRILL

BIN LIGHT

WATER

SHUTTERS

BIN

THERMOSTAT

BIN

WATER

PUMP

ELECTRICAL

DRAIN

PUMP

DRAIN

WATER

INLET

REFRIGERATION

COMPRESSOR

42 Part Number 80-01111-9 7/10

WATER

PUMP

EVAPORATOR

WATER

SHUTTER

ASSEMBLY

NOTE:

EVAPORATOR

REMOVED

FOR CLARITY

EVAPORATOR

BUCKET

CONTROL

BOARD

WATER

SHUTTERS

SPRAY

NOZZLES

SPRAY

BAR

WATER

SUPPLY

LINE

Part Number 80-01111-9 7/10 43

Maintenance

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.) in front 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.

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

A commercial grade stainless steel cleaner/polish can be used as necessary.

Cleaning the Condenser

! Warning

Disconnect electric powe r to the ice machine a t the e lectric service s witch before clean ing the condenser.

Caution

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

CONDENSER

COMB

DOWN

ONLY

FIN COMB

44 Part Number 80-01111-9 7/10

AIR-COOLED 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.

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

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

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

A. Blow compressed air through the condenser fins

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

B. Use a commercial condenser coil cleaner. Follow

the directions and cautions supplied with the cleaner.

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

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

WATER-COOLED CONDENSER AND WATER REGULATING VALVE

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

Low ice production, high water consumption and high operating temperatures and pressures all may be symptoms of restrictions in the condenser water circuit.

Because the cleaning procedures require special pumps and cleaning solutions, they must be performed by qualified maintenance or service personnel.

! Warning

The conde nser fi ns are sharp. Use care whe n cleaning them.

Part Number 80-01111-9 7/10 45

QM45/Q130/Q170/Q210/Q270

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 cleaning and sanitizing.

Cleaning and Sanitizing Procedure

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

Caution

Use only Ma nitowoc app roved Ice Machine Cleaner (p art number 94-0 546-3) and Sanitizer (p art n umber 94 -0565-3). It is a violation of F ederal law to u se th ese solutions in a manner inconsistent with their labeling. Read and unde rstand all lab els printed on bottles before use.

Caution

Do no t mix Ice Machi ne Cle aner an d Sanitizer solutions together. It is a violation of Federal l aw to u se the se solutions i n a manner inconsistent with their labeling.

! Warning

Wear rubb er glo ves and safe ty g oggles (and/or face sh ield) when h andling Ice Machine Cleaner or Sanitizer.

46 Part Number 80-01111-9 7/10

Step 1 Set the toggle switch to the OFF position after

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

Step 2 Remove all ice from the bin. Step 3 To start a cleaning cycle, move the toggle

switch to the WASH position.

Step 4 Add the proper amount of Manitowoc Ice

Machine Cleaner to the water trough.

Step 5 Wait until the clean cycle is complete

(approximately 22 minutes) then place the toggle switch in the OFF position, disconnect power and water supplies to the ice machine.

Caution

Never use a nything to force ice fro m the evaporator. Damage may result.

Model Amount of Cleaner

QM45 1.5 ounce (45 ml)

Q130 1 ounce (30 ml)

Q170 2 ounces (60 ml)

Q210 2 ounces (60 ml)

Q270 2 ounces (60 ml)

! Warning

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

Part Number 80-01111-9 7/10 47

Step 6 Remove parts for cleaning.

A. Remove Two Thumbscrews and Water

Pump Cover (When Used).

B. Remove the Vinyl Hose Connecting the

Water Pump and Water Distribution Tube

C. Remove Water Pump

• Disconnect the water pump power cord

• Loosen the screws securing the pumpmounting bracket to the bulkhead

• Lift the pump and bracket assembly off

the mounting screws.

Water Pump Removal

DO NOT SOAK WATER PUMP MOTOR IN CLEANER OR SANITIZER

SOLUTIONS

WHEN USED- REMOVE

THUMBSCREWS AND

WATER PUMP COVER

48 Part Number 80-01111-9 7/10

D. Remove the Ice Thickness Probe

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

Ice Thickness Probe Removal

NOTE: At this point, the ice thickness probe can easily be cleaned. If complete removal is desired follow the ice thickness probe wire to the bulkhead grommet (exit point) in the back wall. Pop the bulkhead grommet out of the back wall by inserting fingernails or a flat object between the back wall and the grommet and prying forward. Pull the bulkhead grommet and wire forward until the connector is accessible, then disconnect the wire lead from the connector.

Ice Thickness Probe Cleaning

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

• Soak the ice thickness probe a minimum of 10 minutes.

Clean all ice thickness probe surfaces and verify the ice thickness probe cavity is clean. Rinse thoroughly with clean water, then dry completely. Incomplete rinsing and drying of the ice thickness probe can cause premature harvest.

SV1138A

ICE

THICKNESS

PROBE

COMPRESS SIDES OF ICE

THICKNESS PROBE

Part Number 80-01111-9 7/10 49

E. Remove the Water Distribution Tube

Q170/Q210/Q270 Models

Q170/Q210/Q270

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.

SV1630

DISTRIBUTION

TUBE

THUMB SCREW

1. LIFT UP

2. SLIDE BACK

3. SLIDE TO RIGHT

THUMB

SCREW

50 Part Number 80-01111-9 7/10

Disassembly

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

• Pull the inner tube ends outward.

Q210/Q270 Water Distribution Tube Disassembly

SV1211

INNER

TUBE

TA B

KEYWAY

INNER

TUBE

Part Number 80-01111-9 7/10 51

Q130 Models

Q130 Water Distribution Tube Removal

• Loosen the two thumbscrews, which secure the distribution tube.

• Lift the distribution tube up off the thumbscrews.

Disassembly

• Twist the barbed end until the tab lines up with the keyway.

• Pull the inner tube end outward.

Q130 Water Distribution Tube Disassembly

SV1731C

THUMBSCREW

REMOVE ICE

THICKNESS PROBE

THUMBSCREW

DISTRIBUTION

TUBE

SV1741

KEYWAY

TAB

52 Part Number 80-01111-9 7/10

F. Remove the Float Valve

• Turn the splash shield counterclockwise one or two turns.

FLOAT VALVE REMOVAL

• Pull the float valve forward and off the mounting bracket.

• Disconnect the water inlet tube from the float valve at the compression fitting.

• Remove the cap and filter screen for cleaning.

SV1695-2

FLOAT VALVE

BRACKET

COMPRESSION

FITTING

CAP AND FILTER

SCREEN

SPLASH

SHIELD

SHUT-OFF

VAL V E

FLOAT

Part Number 80-01111-9 7/10 53

G. Remove the Water Trough

• Apply downward pressure on the siphon tube and remove from the bottom of the water trough.

• Remove the upper thumbscrew.

• While supporting the water trough remove the two thumbscrews from beneath the water trough.

• Remove the water trough from the bin area.

SV1689-1

UPPER

THUMBSCREW

SV1689-2

LOWER

THUMBSCREWS

REMOVE

SIPHON

TUBE

54 Part Number 80-01111-9 7/10

H. Remove the ice damper.

Q130

• Grasp left side of ice damper and apply p

ressure against the right-hand ice damper

mounting bracket.

• Pull forward on the ice damper until the lefth

and mounting pin disengages.

Installation

• Grasp the right side of ice damper and place le

ft hand pin in the mounting bracket.

• While applying pressure against the left-hand mo

unting bracket push the damper until the

right-hand mounting pin engages.

Q170/Q210/Q270

SV1731F

STEP 1

STEP 2

SV1731G

STEP 2

STEP 1

Part Number 80-01111-9 7/10 55

• Grasp ice damper and apply pressure toward the left hand mounting bracket.

• Apply pressure to the right hand mounting brac

ket with thumb.

• Pull ice damper forward when the right hand ice da

mper pin disengages.

Installation

• Place ice damper pin in left hand mounting b

racket and apply pressure toward the left

hand mounting bracket.

• Apply pressure to the right hand mounting brac

ket with thumb.

• Push ice damper toward evaporator until right h

and damper pin engages.

SV1742A

STEP 2

STEP 1

STEP 3

SV1742H

STEP 2

STEP 1

STEP 3

56 Part Number 80-01111-9 7/10

I. Remove the Bin Door

• Grasp the rear of the bin door and pull bin door forward approximately 5".

• Slide bin door to the rear while applying upward pressure (The rear door pins will ride up into the track slot and slide backward to the stop tab).

• While applying pressure against the bin door pull down on the rear of each bin door track until the door pins clear the stop tabs.

• Slide the rear door pins off the end and then below the door track. Slide bin door forward allowing the back of the door to lower into the bin. Continue forward with the bin door until the front pins bottom out in the track.

• Lift right side of door until the front pins clear the track, then remove door from bin.

• Remove rollers (4) from all door pins.

STOP TAB

TRACK SLOT

SLIDE DOOR

FORWARD

SV1748

Part Number 80-01111-9 7/10 57

Step 7 Mix a solution of cleaner and warm water.

Depending on 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.

Step 8 Use ½ of the cleaner/water solution 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 brush, sponge or cloth (not a wire brush) to carefully clean the parts. Soak the parts for 5 minutes (15 – 20 minutes for heavily scaled parts). Rinse all components with clean water.

Step 9 While components are soaking, use ½ of the

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

• Evaporator plastic parts – including top, bottom and sides

• Bin bottom, sides and top

Rinse all areas thoroughly with clean water.

Step 10 Mix a solution of sanitizer and warm water.

Step 11 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.

Solution

Type

Water Mixed with

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

Solution

Type

Water Mixed With

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

58 Part Number 80-01111-9 7/10

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

sanitize all foodzone surfaces of the ice machine and bin. Use a cloth or sponge to liberally apply the solution. When sanitizing, pay particular attention to the following areas:

• Evaporator plastic parts - including top, bottom and sides

• Bin bottom, sides and top

Do not rinse the sanitized areas.

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

and place the toggle switch in the WASH position. Add the proper amount of Manitowoc Ice Machine

Sanitizer to the water trough.

Step 15 Wait until the sanitize cycle is complete

(approximately 22 minutes) then place the toggle switch in the OFF position, disconnect power and water supplies to the ice machine.

Step 16 Repeat step 6 to remove parts for hand

sanitizing.

Step 17 Mix a solution of sanitizer and warm water.

Model Amount of Sanitizer

QM45 1.5 ounces (45 ml)

Q130 1.6 ounces (48 ml)

Q170 2.2 ounces (66 ml)

Q210 2.2 ounces (66 ml)

Q270 1.9 ounces (57 ml)

! Warning

Disconnect el ectric po wer to the i ce machine at th e electric sw itch box before proceeding.

Solution

Type

Water Mixed With

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

Part Number 80-01111-9 7/10 59

Step 18 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 19 Use 1/2 of the sanitizer/water solution to

sanitize all foodzone surfaces of the ice machine and bin. Use a cloth or sponge to liberally apply the solution. When sanitizing, pay particular attention to the following areas:

• Evaporator plastic parts - including top, bottom and sides

• Bin bottom, sides and top

Do not rinse the sanitized areas.

Step 20 Replace all removed components. Step 21 Reapply power and water to the ice machine

and place the toggle switch in the ICE position.

60 Part Number 80-01111-9 7/10

QM20/QM30

CLEANING AND SANITIZING PROCEDURE

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

Caution

Use only Ma nitowoc app roved Ice Machine Cleaner (p art number 94-0 546-3) and Sanitizer (p art n umber 94 -0565-3). It is a violation of F ederal law to use th ese solutions in a manner inconsistent with their labeling. Read and unde rstand all lab els printed on bottles before use.

Caution

Do n ot mix Ice Machi ne Cleaner an d Sanitizer solutions toge ther. It is a violation of Federal law to use th ese solu tions in a manner inconsistent with their labeling.

! Warning

Wear rubb er glove s a nd safety goggles (and/or face shie ld) w hen handling Ice Machine Cleaner or Sanitizer.

Part Number 80-01111-9 7/10 61

Step 1 Set the toggle switch to the OFF position after

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

Step 2 Remove all ice from the bin. Step 3 To start a cleaning cycle, move the toggle

switch to the WASH position.

Step 4 Wait until water flows over the evaporator

(about three minutes) then add the proper amount of Manitowoc Ice Machine Cleaner to the water trough.

Step 5 Wait until the clean cycle is complete

(approximately 45 minutes) then place the toggle switch in the OFF position, disconnect power and water supplies to the ice machine.

Caution

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

Model Amount of Cleaner

QM20/QM30 45 ml

Warning

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

62 Part Number 80-01111-9 7/10

Step 6 Remove parts for cleaning.

A. Remove the Overflow Tube

• To remove the tube, lift it up while using a slight back and forth motion to loosen it from the drain hole.

When installing the tube, be sure it is completely inserted into the drain hole to prevent water leakage during normal operation.

Removing the Overflow Tube

B. Remove the Vinyl Hose

• Disconnect the water pump discharge hose from the distribution tube and water pump.

DRAIN

HOLE

OVERFLOW

TUBE

Part Number 80-01111-9 7/10 63

C. Remove the Water Pump

• Disconnect the water pump power cord.

• Loosen the screws that hold the water pump in place.

• Lift the water pump and bracket assembly up and off the screws.

Removing the Water Pump

D. Remove the Water T rough

• Remove the screws holding the water trough to the walls of the cabinet.

WATER

PUMP

SCREWS

SV3019

REMOVE SCREWS

64 Part Number 80-01111-9 7/10

Step 7 Mix a solution of cleaner and warm water.

Depending on 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.

Step 8 Use half of the cleaner/water solution to clean

Step 9 While components are soaking, use half of the

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

• Evaporator plastic parts – including top, bottom and sides

• Bin bottom, sides and top

Rinse all areas thoroughly with clean water.

Step 10 Mix a solution of sanitizer and warm water.

Step 11 Use half of the sanitizer/water solution to

Solution Type Water Mixed with

Cleaner 4L. (1 gal)

500 ml (16 oz)

cleaner

Solution

Type

Water Mixed With

Sanitizer 23 L. (6 gal )

120 ml

(4 ounces) sanitizer

Part Number 80-01111-9 7/10 65

Step 12 Use half of the sanitizer/water solution to

sanitize all foodzone surfaces of the ice machine and bin. Use a cloth or sponge to liberally apply the solution. When sanitizing, pay particular attention to the following areas:

• Evaporator plastic parts - including top, bottom and sides

• Bin bottom, sides and top

Do not rinse the sanitized areas.

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

and place the toggle switch in the WASH position.

Step 15 Add the proper amount of Manitowoc Ice

Machine Sanitizer to the water trough.

Step 16 Wait until the sanitize cycle is complete

(approximately 45 minutes) then place the toggle switch in the OFF position, disconnect power and water supplies to the ice machine.

Step 17 Repeat step 6 to remove parts for hand

sanitizing.

Step 18 Mix a solution of sanitizer and warm water.

Step 19 Use half of the sanitizer/water solution to

Model Amount of Sanitizer

QM20/QM30 45 ml

! Warning

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

Solution Type Water Mixed With

Sanitizer 23L. (6 gal )

120 ml (4 oz)

sanitizer

66 Part Number 80-01111-9 7/10

Step 20 Use half of the sanitizer/water solution to

sanitize all foodzone surfaces of the ice machine and bin. Use a cloth or sponge to liberally apply the solution. When sanitizing, pay particular attention to the following areas:

• Evaporator plastic parts - including top, bottom and sides

• Bin bottom, sides and top

Do not rinse the sanitized areas.

Step 21 Replace all removed components. Step 22 Reapply power and water to the ice machine

and place the toggle switch in the ICE position.

Part Number 80-01111-9 7/10 67

SM50

CLEANING PROCEDURE

SM50 uses a tin plated evaporator. Do not use standard cleaner, use only 000000084 cleaner for this ice machine.

Ice machine cleaner is used to remove lime scale or other mineral deposits. It is not used to remove algae or slime. Refer to “Sanitizing Procedure” on page 68 for removal of algae and slime.

1. To start a cleaning cycle, press the CLEAN switch. The ice machine will initiate a 2 minute harvest to remove any ice from the evaporator. Or, set the switch to the OFF position and allow the ice to melt off the evaporator.

2. Remove all ice from the bin.

3. The clean light will energize to indicate the clean cycle has started.

Caution

Use onl y Manitowoc app roved Ice Ma chine Cleaner (part number 94-0546-3 original green ice machine cl eaner or 000000084 cl ear met al safe ice mach ine cleaner) and Sani tizer (p art number 94-0565-3). It is a viola tion of Fed eral la w to use these solutions in a manner inconsistent with their labeling. Re ad and u nderstand a ll labels printed on bottles before use.

Caution

Never use a nything to force i ce from the evaporator. Damage may result.

68 Part Number 80-01111-9 7/10

4. Wait until the Clean light flashes (3 minutes) then add 3 oz of Manitowoc cleaner by lifting the water shutter and pouring directly into the spray area. The ice machine will automatically time out a ten minute cleaning cycle, followed by eight rinse cycles, and stop. The Clean light will turn off to indicate the Clean cycle is complete. This entire cycle lasts approximately 30 minutes.

5. When the cleaning process stops, remove all parts as described in Removal of Parts for Cleaning and Sanitizing.

6. Mix 16 oz (480 ml) cleaner with 1 gal (4 L) of warm water in a non metallic container.-

7. Take all components to sink for cleaning. Use 1/2 of the Cleaner/Water mixture and clean all components with a soft nylon brush or cloth. Disassemble spray bar, remove nozzles and inserts and soak for 5 minutes. For heavily scaled parts, soak in solution for 15 – 20 minutes. Rinse all components with clean water.

8. While components are soaking, use nylon brush or cloth to clean inside of ice bin. Clean inside of door, door gasket, bin, top of evaporator and evaporator bucket. Rinse all areas thoroughly with clean water.

SANITIZING PROCEDURE

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

NOTE: Always perform a cleaning procedure before sanitizing the ice machine.

1. Mix 4 oz (120 ml) sanitizer with 6 gal (13 L) of warm water in a non metallic container.

2. Take all components to sink for sanitizing. Use the Sanitizer/Water mixture and sanitize all components that were removed for the Cleaning Procedure with a soft nylon brush or cloth. Soak for 5 minutes. Do not rinse sanitized components.

Part Number 80-01111-9 7/10 69

3. While components are soaking, use nylon brush or cloth to sanitize the inside of ice bin. Sanitize inside of door, door gasket, bin, top of evaporator and evaporator bucket. Do not rinse sanitized components.

4. Replace all components removed.

5. To start a sanitizing cycle, press the CLEAN switch. The Clean light will energize to indicate the sanitizing cycle has started.

6. Wait until the Clean light flashes (3 minutes) then add 0.5 oz (15 ml) of Manitowoc sanitizer by lifting the water shutter and pouring directly into the spray area. The ice machine will automatically time out a ten minute cleaning cycle, followed by eight rinse cycles, and stop. The Clean light will turn off to indicate the Cleaning cycle is completed. This entire cycle lasts approximately 30 minutes.

NOTE: The ice machine will automatically continue from the previous point before the clean cycle was initiated.

• If the ice machine was in the ice making cycle, the control board will initiate a 2 minute harvest cycle, perform the clean cycle and start ice making again automatically.

• If the ice machine was in the off cycle, the control board will perform a clean cycle and turn off automatically.

• If the ice machine was in a delay mode, the control board will perform a clean cycle and resume the delay period automatically.

REMOVAL OF PARTS FOR CLEANING AND SANITIZING

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

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

3. Remove the parts or components you want to clean or sanitize:

! Warning

Disconnect el ectric po wer to the ice machine at the electric switch box before proceeding.

70 Part Number 80-01111-9 7/10

WATER SHUTTERS

The water shutter is designed to keep the spraying water from escaping the evaporator compartment.

To remove just the water shutters:

1. Grasp one end of the water shutter and lift up.

2. Pivot water shutter and disengage remaining end.

3. To re-install into ice machine, grasp one end of the water shutters, install one end, pivot the opposite end and pull down into position. Make sure tabs are secure in grooves.

To remove water shutter assembly:

1. Slide evaporator bucket forward 1/2" (13 mm).

2. Lift shutter assembly straight up.

Warning

Removing the water shu tters whil e the water pump is running will allow water to spray from ice machine. D isconnect the e lectrical p ower to the ice machine at the electric service switch box and turn off the water supply.

GRASP

WATER

SHUTTERS

HERE

WATER

SHUTTERS

SHUTTER

ASSEMBLY

Part Number 80-01111-9 7/10 71

ICE CHUTE

The ice chute is positioned over the spray nozzles and allows the ice to easily fall into the bin. It must be firmly positioned over the spray bar, with the front edge inside the water trough. Spray nozzles must align with the spray holes or spray water will fall into the bin.

1. Grab protruding spray hole on one end and lift up and remove.

2. To re-install ice chute, grasp protruding spray hole and position over Water Distribution Assembly. Make sure rear supports are over spray bar, and front edge is inside of water trough.

72 Part Number 80-01111-9 7/10

SUMP DRAIN OVERFLOW TUBE

1. Remove clamp.

2. Pull down to remove overflow tube and tubing as an assembly. The sump trough water will drain into the bin.

3. Remove overflow tube from vinyl tubing by pulling.

REMOVE CLAMP

AND

PULL DOWN

Part Number 80-01111-9 7/10 73

WATER TROUGH

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

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

74 Part Number 80-01111-9 7/10

SPRAY BAR, WATER PUMP AND HOSE

Remove spray bar clamp and spray bar.

1. Grasp pump and pull straight down until water pump disengages and electrical connector is visible.

2. Disconnect the electrical connector.

3. Remove the water pump from ice machine.

4. Remove clamp from hose to remove from pump.

5. Do not submerse the water pump motor in cleaner or sanitizer. If soaking is required, immerse pump to normal water level during the freeze.

! Warning

Disconnect the e lectric pow er to the ice machine at the electric service switch b ox and turn off the water supply before proceeding.

DO NOT

IMMERSE

MOTOR IN

SOLUTION

REMOVE

CLAMP

REMOVE

CLAMP

MAXIMUM

SOLUTION

HEIGHT WHEN

SOAKING

Part Number 80-01111-9 7/10 75

SPRAY BAR DISASSEMBLY

The spray bar supplies water to the individual ice making cups. Water from the water pump sprays through the nozzles, located on the upper portion of the tubes.

1. Grasp one end of the spray bar, lift up and remove from seat formed in evaporator bucket.

2. Remove clamp on water inlet tubing by grasping both ears on clip and separating.

3. Apply food grade lubricant to ease re-assembly of spray bar components when necessary.

4. To re-install spray bar, position water inlet tubing on inlet ports, and squeeze clips until tight.

5. Reposition assembly on water trough seat. Nozzles and inserts can be removed for cleaning by unscrewing nozzles. Inserts are located inside the spray bar ports. The spray bar also disassembles for easy cleaning.

REMOVE

CLAMP

76 Part Number 80-01111-9 7/10

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

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

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

NOTE: Do not rinse sanitized components.

9. Install the removed parts.

10. Turn on the water and electrical supply.

Warning

Wear ru bber gloves an d sa fety g oggles (and/or face shie ld) whe n han dling Ice Ma chine Clea ner or Sanitizer.

Solution

Type

Water Mixed With

Cleaner 1 gal (4 l)

16 oz (500 ml)

cleaner

Sanitizer 6 gal (23 l)

4 oz (120 ml)

sanitizer

! Warning

Do not mi x Cleaner and Sanitizer solu tions together. It is a viola tion of Fe deral law to use these solutions in a manner inconsistent with their labeling.

Caution

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

Part Number 80-01111-9 7/10 77

Removal from Service/Winterization

GENERAL

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

Follow the applicable procedure below.

SELF-CONTAINED AIR-COOLED ICE MACHINES

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

2. Turn off the water supply.

3. Remove the water from the water trough.

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

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

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

Caution

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

78 Part Number 80-01111-9 7/10

WATER-COOLED ICE MACHINES

1. Perform steps 1-6 under “Self-contained Aircooled Ice Machines” on page 77.

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.

Pry Open the Water Regulating Valve

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

SV1624

Part Number 80-01111-9 7/10 79

Operation

QM45/Q130/Q170/Q210/Q270

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

1. Pressure Equalization

Before the compressor starts the hot gas valve is energized for 15 seconds to equalize pressures during the initial refrigeration system start-up.

2. Refrigeration System Start-up

The compressor starts after the 15-second pressure equalization, and remains on throughout the entire Freeze and Harvest Sequences. The hot gas valve 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 relay. As a result, any time the relay 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 starts after the 30-second prechill. An even flow of water is directed across the evaporator and into each cube cell, where it freezes.

When sufficient ice has formed, the water flow (not the ice) contacts the ice thickness probe. After approximately 7 seconds of continual water contact, the Harvest Sequence is initiated. The ice machine cannot initiate a Harvest Sequence until a 6-minute freeze time has been surpassed.

80 Part Number 80-01111-9 7/10

HARVEST SEQUENCE

5. Harvest

The water pump de-energizes stopping flow over the evaporator. The rising level of water in the sump trough diverts water out of the overflow tube, purging excess minerals from the sump trough. The hot gas valve also opens to divert hot refrigerant gas into the evaporator.

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 contacts the ice damper, opening the bin switch.

The momentary opening and re-closing of the bin switch terminates the Harvest Sequence and returns the ice machine to the Freeze Sequence (steps 3 - 4).

AUTOMATIC SHUT-OFF

6. Automatic Shut-off

When the storage bin is full at the end of a harvest sequence, the sheet of cubes fails to clear the ice damper and will hold it down. After the ice damper 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 damper. As the ice damper 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.

Part Number 80-01111-9 7/10 81

ENERGIZED PARTS CHART Q130/Q170/Q210/Q270/QM45

Self-Contained Ice Machines

* Condenser Fan Motor: The fan motor is wired through a fan cycle

pressure control; therefore, it may cycle on and off.

Length of

Time

15 seconds

5 seconds

30 seconds

Until 7 sec.

Water contact

w/ice

thickness

probe

Relay

Compressor

Fan Motor*

off

Compressor

off

Control Board Relays

Relay

Coil

off

Hot Gas Valve

off

Water Pump

off

ICE MAKING

SEQUENCE OF

OPERATION

Initial Start-up

1. Water purge

2. Refrigeration

System Start-up

Freeze Sequence

3. Pre chill

4. Freeze

82 Part Number 80-01111-9 7/10

Length of

Time

Bin switch

activation

Until bin

switch

re-closes

Relay

Condenser

Fan Motor*

off

Compressor

off

Control Board Relays

Relay

Coil

off

Hot Gas

Valve

off

Water Pump

off

ICE MAKING

SEQUENCE OF

OPERATION

Harvest

Sequence

5. Harvest

Automatic

Shut-off

6. Auto Shut-off

Part Number 80-01111-9 7/10 83

QM20/QM30

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

1. Water Purge

The water fill valve and the hot gas valve are energized for 2.9 minutes (175 seconds). This ensures that the ice making cycle starts with fresh water, and that the refrigerant pressures are equalized prior to refrigeration system start-up.

2. Refrigeration System Start-up

The compressor starts 2.9 minutes (175 seconds) after the water fill valve and hot gas valve are energized. (The water fill valve and hot gas valve remain energized for 5 seconds during compressor start-up, and then shut off.) The compressor remains on throughout the entire freeze and harvest cycles.

FREEZE SEQUENCE

3. Freeze Cycle

The condenser fan motor and water pump are energized and remain on throughout the entire freeze cycle. An even flow of water is directed across the evaporator and into each cube cell, where it freezes.

The control system automatically determines the length of the freeze cycle by monitoring the temperature of the refrigeration system liquid line.

84 Part Number 80-01111-9 7/10

HARVEST SEQUENCE

4. Harvest Cycle

The condenser fan motor and water pump deenergize. The water fill valve energizes to purge the water in the water trough. The hot gas valve also energizes at the beginning of the harvest cycle to divert hot refrigerant gas into the evaporator. The hot refrigerant gas warms the evaporator, causing the cubes to slide, as a sheet, off the evaporator and into the ice storage bin.

The control system automatically determines the length of the harvest cycle, based on the temperature of the refrigeration system liquid line at the end of the freeze cycle. At the end of the harvest cycle, the ice machine returns to another freeze cycle (step 3).

AUTOMATIC SHUT-OFF

5. Automatic Shut-off

The level of ice in the ice storage bin controls the ice machine shut-off. When the bin is full, ice cubes contact the bin thermostat bulb holder, which cools down and opens to stop the ice machine. The ice machine remains off until enough ice has been removed from the bin. This causes the thermostat bulb holder to warm and close, restarting the ice machine. When the ice machine restarts, it returns to the startup sequence (steps 1 – 2).

Part Number 80-01111-9 7/10 85

ENERGIZED PARTS CHART QM20/QM30

Self-Contained Ice Machines

Length of

“ON” Time

2.9 minutes (175 seconds)

5 seconds

Automatically

determined

Automatically

determined

Until bin

thermostat

re-closes

Control Board Relays

Water Pump

Fan Motor

off

Hot Gas Valve

Water Fill Valve

off

Compressor

off

ICE MAKING

SEQUENCE OF

OPERATION

Initial Start-up

1. Water purge

2. Refrigeration System

Start-up

3. Freeze Cycle

4. Harvest Cycle

5. Auto-shut-off

86 Part Number 80-01111-9 7/10

SM50

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

Sequence of Operation

Bin thermostat and the optional drain pump safety switch must be closed before the ice machine will start.

1. Initial Start-up or Start-up After Automatic Shut-off – Water Fill

Before the compressor starts, the water pump, water inlet valve and hot gas valve are energized for about 3 minutes.

2. Refrigeration System Start-up

The compressor starts after the water fill, and remains on throughout the Freeze and Harvest cycles. The hot gas valve 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. The condenser fan motor will remain energized during the entire freeze cycle.

3. Freeze

The water pump sprays water into the inverted cups. The water freezes layer by layer, until an ice cube forms in each cup. The control system monitors the temperature of the refrigeration system liquid line to determine the length of the freeze cycle.

Part Number 80-01111-9 7/10 87

4. Harvest

The water pump de-energizes and the water inlet valve energizes to assist harvest and refill the water sump. The hot gas valve opens and the refrigerant gas warms the evaporator allowing the cubes to release from the evaporator and drop into the storage bin.

The control system automatically determines:

• Length of time the ice machine will remain in the

harvest cycle

• Whether the condenser fan motor is energized or

de-energized during the harvest cycle

At the end of the harvest cycle the ice machine will start another freeze cycle (step 3).

5. Automatic Shut-off

88 Part Number 80-01111-9 7/10

ENERGIZED PARTS CHART SM50

Self-contai ned Ice Mach ines

* Liquid line thermistor determines the length of the freeze and

harvest cycles. Liquid line temperature also determines fan motor operation during the harvest cycle.

Duration

175 seconds

5 seconds

Automatically

determined*

Automatically

determined*

Until bin

thermostat

Re-closes

Fan

Motor

(5)

off

Compressor

(4)

off

Harvest

Valve

(3)

off

Water

Inlet

Valve

(2)

off

Water

Pump

(1)

off

SEQUENCE

(Relay)

Initial Start-up/

Start-up after

Automatic Shutoff

Refrigeration

System Start-up

Freeze Cycle

Harvest

Automatic Shutoff

Part Number 80-01111-9 7/10 89

Operational Checks

QM45/Q130/Q170/Q210/Q270 Siphon System

To reduce mineral build-up and cleaning frequency, the water in the sump trough must be purged during each harvest cycle.

When the water pump de-energizes the level in the water trough rises above the standpipe starting a siphon action. The siphon action stops when the water level in the sump trough drops. When the siphon action stops, the float valve refills the water trough to the correct level.

Follow steps 1 through 6 under water level check to verify the siphon system functions correctly

Water Level

Check the water level while the ice machine is in the ice mode and the water pump is running. The correct water level is 1/4" (6.3 mm) to 3/8" (9.5 mm) below the top of the standpipe, a line in the water trough indicates the correct level.

SV1689-1

SET THE WATER LEVEL TO

THE LINE IN THE WATER

TROUGH

SIPHON CAP

90 Part Number 80-01111-9 7/10

Water Level Check

The float valve is factory-set for the proper water level. If adjustments are necessary:

1. Verify the ice machine is level.

2. Remove the siphon cap from the standpipe.

3. Place the main ON/OFF/WASH toggle switch to the ON position, and wait until the float valve stops adding water.

4. Adjust the water level to [1/4" to 3/8" (6.3 to 9.5 mm) below the standpipe] the line in the water trough:

A. Loosen the two screws on the float valve

bracket.

B. Raise or lower the float valve assembly as

necessary, then tighten the screws.

5. Move the main ON/OFF/WASH toggle switch to the OFF position. The water level in the trough will rise above the standpipe and run down the drain.

6. Replace the siphon cap on the standpipe, and verify water level and siphon action by repeating steps 3 through 5.

Ice Thickness Check

After a harvest cycle, inspect the ice cubes in the ice storage bin. The ice thickness probe is set to maintain an ice bridge of 1/8" (3.2 mm). If an adjustment is needed, follow the steps below.

1. Turn the ice thickness probe adjustment screw clockwise for a thicker ice bridge, or counterclockwise for a thinner ice bridge.

Part Number 80-01111-9 7/10 91

Ice Thickness Adjustment

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

1/8" ICE BRIDGE

THICKNESS

ADJUSTING

SCREW

SV3114

SV3113

92 Part Number 80-01111-9 7/10

QM20/QM30

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

Water Inlet Valve

The water inlet valve energizes in the harvest cycle. The water level will rise and flow out the overflow tube and down the drain. Verify the overflow tube is in place in the water trough. The water level is not adjustable.

ATTACHMENT

POINT

OVERFLOW

TUBE

SV3019

Part Number 80-01111-9 7/10 93

Ice Thickness Check

QM20/QM30 dice ice cube formation is slightly different from our previous models. Manitowoc ice machines have a unique cube shape. It is normal to have a dimple in the ice cube (a concave indentation in the cube). Ice cubes from the QM20/QM30 may appear to have a slightly larger dimple than other Manitowoc ice cube machines. Therefore, cube size for the QM20/QM30 is determined by measuring the slab weight (the combined weight of all cubes from one harvest cycle). To determine proper slab weight follow the instructions listed below.

Correct Ice Bridge Thickness

1. Ensure the air filter, front, and back panels are installed properly and close the bin door.

2. During the third

harvest cycle open the bin door

and catch the entire slab of ice.

3. Weigh the ice slab. The combined weight of all cubes from one harvest should weigh between 7 – 9 oz (200 – 270 g). If the slab weight is within this range, the ice machine is working properly and no further action is needed. If the slab weight is not within this range or you desire a slightly thicker or thinner cube, continue to step 4.

4. Remove the air filter.

Warning

Do not touch electrical wires. Disconnect power to the ice machin e before makin g any ice th ickness adjustments.

SV3113

ICE BRIDGE SHOULD BE

1/16 – 1/8" THICK

A DIMPLE IN EACH

CUBE CELL IS

NORMAL

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5. Remove the two screws holding the front panel in place and remove the front cover.

6. Locate the ice thickness control dial on the control board (see below). Turn the dial clockwise for a thicker cube or counterclockwise for a thinner cube.

Ice Thickness Adjustment Dial

7. Ensure all of the panels and air filter are reinstalled properly and the bin door is closed. Repeat steps 1 – 3.

After completing the procedure above, if you are unable to obtain a sheet of ice weighing 7 – 9 oz (200 – 270 g) contact the Manitowoc Service Department for further assistance.

DIAL IS FACTORY

SET TO ZERO

ICE THICKNESS

ADJUSTMENT

DIAL

SV1710

Part Number 80-01111-9 7/10 95

SM50

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

Water Inlet Valve

Bin Thermostat Adjustment

The bin thermostat stops the ice machine when the bin is full. Turn the thermostat to the left to decrease the level of ice in bin or to the right to increase the level of ice in bin.

Power Button (Green)

Pressing the “Power” button once will energize the ice machine and green Power light. Pressing the “Power” button a second time will de-energize the ice machine.

Automatic Ice Making Light (Blue)

This light is energized when the ice machine is the ice making position. The light is off when the ice machine is in the clean cycle.

Delay Start

Pressing the “Delay Start” button will initiate a delay cycle. The ice machine will not run until the delay time expires.

• Pressing the button once will energize the 2 hour

light and initiate a two hour delay period.

• Pressing the button a second time will energize the

4 hour light and initiate a four hour delay period.

• Pressing the button a third time will energize the 8

hour light and initiate an eight hour delay period.

• Pressing the button a fourth time will cancel the

delay cycle.

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Clean (Green)

Pressing the “Clean” button will initiate a clean cycle and de-energize the “Automatic Ice Making” light. The clean light will flash during the clean cycle to indicate the proper time to add ice machine cleaner or sanitizer.

Replace Filter (Red)

When the ice machine completes 8000 freeze/harvest cycles the light will energize to indicate the filter needs replacement. Depressing the “Clean” button for 6 seconds will reset the counter and de-energize the light.

Safety Timers

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

• Initial cycle is 5 minutes longer than subsequent cycles.

• The ice machine is locked into the freeze cycle for 10 minutes (15 minutes initial cycle) before a harvest cycle can be initiated.

• The maximum freeze time is 120 minutes at which time the control board automatically initiates a harvest cycle (step 4).

• The maximum harvest time is 5 minutes at which time the control board automatically starts a freeze cycle.

Part Number 80-01111-9 7/10 97

Cube Weight Adjustment

The cube weight can be increased from the factory setting by adjusting the finish time.

ADDITIONAL FINISHING TIME CHECK

1. Press and hold the power button for 5 seconds.

2. Count the flashes on the Automatic Ice Making light. The light will flash once for each additional minute of freeze cycle time.

ADJUSTING FINISHING TIME

Adjust in 1 minute increments and allow the ice machine to run several freeze/harvest cycles, then inspect the ice cubes. If a heavier cube weight is desired add another minute of freeze time and repeat the process.

1. Press and hold the “Power” button.

2. Press and release the “Clean” button once for each additional minute of freeze cycle time desired.

3. Five minutes is the maximum additional freeze time that can be added. Pressing the clean button 6 times will reset the finishing time to zero additional minutes.

SM050 Control Panel

SM050 Ice Cube

POWER

DELAY STAR T

2 4 8

HOURS

AUTOMATIC

ICE

MAKING

CLEAN

REPLACE

WATE R FI LTE R

TO RESET:

PUSH AND HOLD CLEAN

BUTTON FOR 6 SECONDS

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This Page Intentionally Left Blank

Part Number 80-01111-9 7/10 99

Troubleshooting

QM45/Q130/Q170/Q210/Q270

DIAGNOSING AN ICE MACHINE THAT WILL NOT RUN

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

2. Verify control board fuse is okay.

3. If the bin switch light functions, the fuse is okay.

4. Verify the bin switch functions properly. A defective bin switch can falsely indicate a full bin of ice.

5. Verify ON/OFF/WASH toggle switch functions properly. A defective toggle switch may keep the ice machine in the OFF mode.

6. Verify low DC voltage is properly grounded. Loose DC wire connections may intermittently stop the ice machine.

7. Replace the control board.

8. Be sure Steps 1 – 5 were followed thoroughly. Intermittent problems are not usually related to the control board.

! Warning

High (line) voltage is applied to the control board (terminals # 2 a nd # 4) at a ll times. Re moving control board fuse o r moving the tog gle switch to OFF wi ll not remove the po wer supp lied to the control board.

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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 ON/OFF/WASH switch to OFF and back to ON. Wait until the water starts to flow over the evaporator.

Step 2 Clip the jumper wire to the ice thickness probe

and any cabinet ground.

Step 2 Jumper wire connected from probe to ground

Monitoring Harvest Light Correction

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

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

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

The ice 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.

GROUND

JUMPER WIRE

ICE THICKNESS

PROBE

CONNECTION

EVAPORATOR

BIN SWITCH

LIGHT

(GREEN)

SV1592i

HARVEST LIGHT

(RED)

Manitowoc QR0130A, QR0131W, QD0132A, QD0133W, QY0134A Technician's Handbook

Specifications and Main Features

Frequently Asked Questions

User Manual