Manitowoc Ice K-0250 SERVICE MANUAL

KOOLAIRE

Ice Machines

Technician’s

Handbook

This manual is updated as new information and models are

released. Visit our website for the latest manual. www.kool-aire.com

Part Number STH045 8/15

Safety Notices

Warning

Caution

As you work on Koolaire 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 Koolaire 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: T ext 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

Warning

Proper installation, care and maintenance are essential for maximum performance and troublefree operation of your equipment. Visit our website www.kool-aire.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.

Do not use electrical appliances or accessories other than those supplied by Koolaire for your ice machine model.

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

! Warning

This equipment contains high voltage electricity

Warning

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.

Do not operate equipment that has b een misused, 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.

Warning

Do not obstruct machine vents or openings.

! Warning

Warning

! Warning

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.

It is the responsibility of the equipment owner to 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.

! Warning

When using electric appliances, basic

We reserve the right to make product

improvements at any time. S pecifications and

design are subject to change without notice.

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

Model Numbers . . . . . . . . . . . . . . . . . . . . . 13

How to Read a Model Number . . . . . . . . .14

Ice Machine Warranty Information . . . . .15

Commercial Warranty Coverage . . . . .15

Residential Warranty Coverage . . . . .18

Limited Warranty for Ice Storage Bins . .21

Limited Warranty . . . . . . . . . . . . . . . . .21

INSTALLATION

Location of Ice Machine . . . . . . . . . . . . . .25

Ice Machine Clearance Requirements . .26

Clearance Requiremen ts . . . . . . . . . . . . .26

Ice Machine Heat of Rejection . . . . . . . . .27

Leveling the Ice Machine . . . . . . . . . . . . .27

Electrical Requirements . . . . . . . . . . . . . .28

Water Service/Drains . . . . . . . . . . . . . . . .29

Water Supply . . . . . . . . . . . . . . . . . . . .29

Water Inlet Lines . . . . . . . . . . . . . . . . .29

Drain Connections . . . . . . . . . . . . . . . .30

Cooling Tower Applications . . . . . . . . . 30

MAINTENANCE

Interior Cleaning and Sanitizing . . . . . . .33

General . . . . . . . . . . . . . . . . . . . . . . . .33

Cleaning and Sanitizing Procedure . . . 33

Toggle switch Operation . . . . . . . . . . .34

Remove Parts for Cleaning . . . . . . . . .38

Preventative Maintenance Cleaning . . . .40

Ice Machine Inspection . . . . . . . . . . . . . .41

Cleaning the Condenser . . . . . . . . . . . . . 42

Removal from Service/Winterization . . .43

Air-cooled Models . . . . . . . . . . . . . . . .43

Water-cooled Models . . . . . . . . . . . . .43

Part Number STH045 8/15 9

OPERATION

Ice Making Sequence of Operation . . . . 45

Control Board Timers . . . . . . . . . . . . 46

Energized Parts Chart . . . . . . . . . . . . 48

Operational Checks . . . . . . . . . . . . . . . . . 50

Ice Thickness Check . . . . . . . . . . . . . 50

TROUBLESHOOTING

Control Board Test Mode . . . . . . . . . . . . 51

Diagnosing an Ice Machine that Will Not Run

Ice Machine Does Not Cycle Into Harvest when Water Loses Contact with the Harvest

Float Switch . . . . . . . . . . . . . . . . . . . . . . . 53

Ice Machine Cycles Into Harvest Before Water loses Contact with the Harvest Float Switch

Ice Production Check . . . . . . . . . . . . . . . 56

Installation/Visual Inspection Checklist 57

Water System Checklist . . . . . . . . . . . . . 58

Ice Formation Pattern . . . . . . . . . . . . . . . 59

Safety Limits . . . . . . . . . . . . . . . . . . . . 61

Analyzing Discharge Pressure . . . . . . . . 68

Analyzing Suction Pressure . . . . . . . . . . 70

Harvest Valve . . . . . . . . . . . . . . . . . . . . . . 74

Comparing Evaporator Inlet/Outlet

Temperatures . . . . . . . . . . . . . . . . . . . . . . 78

Discharge Line Temperature Analysis . 79 Refrigeration Component Diagnostics . 81

Final Analysis . . . . . . . . . . . . . . . . . . . 83

Refrigeration Component Diagnostic Chart

10 Part Number STH045 8/15

COMPONENT CHECK PROCEDURES

Main Fuse . . . . . . . . . . . . . . . . . . . . . . . . .87

Bin Switch . . . . . . . . . . . . . . . . . . . . . . . . .88

Float Switch . . . . . . . . . . . . . . . . . . . . . . . 90

Compressor Electrical Diagnostics . . . . 92

Fan Cycle Control . . . . . . . . . . . . . . . . . . .94

High Pressure Cutout (HPCO) Control . .95

Refrigeration Components . . . . . . . . . . .96

Head Pressure Control Valve . . . . . . . 96

Harvest Pressure Regulating (HPR) System

Remote Condenser Only . . . . . . . . . . . 100

Water Regulating Valve . . . . . . . . . . .103

Refrigerant Recovery/Evacuation . . . . . .104

Definitions . . . . . . . . . . . . . . . . . . . . . .104

Refrigerant Re-use Policy . . . . . . . . . .105

Recovery and Recharging Procedures 107 Remote Condenser Model Procedure .110

System Contamination Cleanup . . . . . . . 113

Determining Severity of Contamination 113 Mild System Contamination Cleanup

Procedure . . . . . . . . . . . . . . . . . . . . . .115

Severe System Contamination Cleanup

Procedure . . . . . . . . . . . . . . . . . . . . . .116

Replacing Pressure Controls without

Removing Refrigerant Charge . . . . . . .117

Refrigerant Amount . . . . . . . . . . . . . . . . .119

Part Number STH045 8/15 11

YCHARTS

Cycle Times, 24 Hr. Ice Production and

Refrigerant Pressure Charts . . . . . . . . . . 121

K0250A Self-contained Air-cooled . . . 122 K0350A Self-contained Air-cooled . . . 123 K0350W Self-contained Water-cooled 124 K0420A Self-contained Air-cooled . . . 125 K0420W Self-contained Water-cooled 126 K0500A Self-contained Air-cooled . . . 127 K0500W Self-contained Water-cooled 128 K0600A Self-contained Air-cooled . . . 129 K0600W Self-contained Water-cooled 130 K1000A Self-contained Air-cooled . . . 131 K1000W Self-contained Water-cooled 132

K1000N Remote Air-cooled . . . . . . . . 133

K1350A Self-contained Air-cooled . . . 134 K1350W Self-contained Water-cooled 135

K1350N Remote Air-cooled . . . . . . . . 136

DIAGRAMS

Wiring Diagrams . . . . . . . . . . . . . . . . . . . 137

Wiring Diagram Legend . . . . . . . . . . . 137

K0250, K0350, K0420, K0500, K0600, K1000  Self contained Air OR Water-cooled . . 138

K1000 Remote Air-cooled . . . . . . . . . 139

K13500 - K1800 Air or Water-cooled . 140 K13500 - K1800 Air or Water-cooled . 141 K13500 - K1800 remote Air-cooled . . 142 K13500 - K1800 remote Air-cooled . . 143

Electronic Control Board . . . . . . . . . . . 144

Refrigeration Tubing Schematics . . . . . 145

Self-contained Air or Water-cooled . . . 145

Remote Air-cooled . . . . . . . . . . . . . . . 146

12 Part Number STH045 8/15

General Information

Model Numbers

This manual covers the following models:

Self-Contained

Air-Cooled

KD0250A KY0250A KD0350A KY0350A KD0420A KY0420A KD0500A KY0500A KD0600A KY0600A KD1000A KY1000A KD1350A KY1350A

Self-Contained

Water-Cooled

----

---KD0350W KY0350W KD0420W KY0420W KD0500W KY0500W KD0600W KY0600W KD1000W KY1000W KD1350W KY1350W

Remote

----

---KY1000N KD1000N KY1350N KD1350N

Part Number STH045 8/15 13

How to Read a Model Number

! Warning

A - Air-cooled W - Water-cooled N - Remote Air-cooled

Series

Condenser

Type

Model

K D 0350 A E

D - Dice Y - Half-dice

Cube Size

E - WRAS 50Hz

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.

14 Part Number STH045 8/15

Ice Machine Warranty Information

Important

Owner Warranty Registration Card General

Warranty coverage begins the day the ice machine is installed.

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

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

COMMERCIAL WARRANTY COVERAGE

The Koolaire brand warranty is administered through Manitowoc Ice (hereinafter referred to as the “COMPANY”) warrants for a period of 36 months from the installation date (except as limited below) that new ice machines manufactured by the C OMP ANY 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 and evaporator shall apply for an additional tenty four months, excluding all 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.

Part Number STH045 8/15 15

Time and hourly rate schedules, as published from time to time by the COMPANY, apply to all service procedures. 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 Factory Authorized Service Company 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.

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.

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.

In no event shall the

16 Part Number STH045 8/15

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.

Warranty Service

To comply with the provisions of the warranty, a refrigeration service company qualified and authorized by your Koolaire distributor, or a Factory Authorized Servicer must perform the warranty repair.

Service Calls

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

For factory assistance Contact: Manitowoc Foodservice Ice Machine Division

2110 South 26th Street, PO Box 1720,

Manitowoc WI, 54221-1720 T elephone: 920-682-0161 Fax: 920-683-7585

Website: www.kool-aire.com

Authorized

Part Number STH045 8/15 17

RESIDENTIAL WARRANTY COVERAGE WHAT DOES THIS LIMITED WARRANTY COVER?

Subject to the exclusions and limitations below, Manitowoc Foodservice (“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 startup in accordance with the instruction manual supplied with the Product.

HOW LONG DOES THIS LIMITED WARRANTY LAST?

Product CoveredWarranty Period Ice MachineTwelve (12) months from the sale date

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’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.

18 Part Number STH045 8/15

HOW TO OBTAIN WARRANTY SERVICE To obtain warranty service or information regarding

your Koolaire product, please contact: MANITOWOC ICE 2110 So. 26th St. P.O. Box 1720, Manitowoc, WI 54221-1720 Telephone: 920-682-0161 Fax: 920-683-7585 www.kool-aire.com WHAT IS NOT COVERED? This limited warranty does not 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 T o The Product. All Implied Warranties Are S trictly 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.

Continued on next page …

Part Number STH045 8/15 19

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 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.

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 T o 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.

For factory assistance Contact: Manitowoc Foodservice Ice Machine Division

2110 South 26th Street, PO Box 1720,

Manitowoc WI, 54221-1720 T elephone: 920-682-0161 Fax: 920-683-7585

Website: www.kool-aire.com

20 Part Number STH045 8/15

Limited Warranty for Ice Storage Bins

LIMITED WARRANTY

Koolaire®, a division of Manitowoc FSG Operations, LLC (“Company”), warrants the new Ice Storage Bin sold by 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.

WHAT IS COVERED

Parts and Labor for a period of twelve (12) months. The Ice Storage Bin Warranty begins on the date of

the original installation. This Warranty shall not apply to any Ice Storage Bin initially installed more than five (5) years from the serial number production date.

The obligation of the Company under this Warranty is limited to the repair or replacement of parts, components, or assemblies that in the sole 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. Additional expenses including without limitation, travel time, overtime premium, material costs, accessing or removal of the Ice Storage Bin or shipping are the responsibility of the Purchasers, along with all maintenance, adjustments, cleaning and ice purchase. Labor covered under this Warranty must be performed by an approved Company contracted Service Representative or a refrigeration service agency as qualified and authorized by the Company’s local Distributor. Company’s liability under this Warranty shall in no event be greater than the actual purchase price paid by the purchaser for the Ice Storage Bin.

Part Number STH045 8/15 21

EXCLUSIONS FROM COVERAGE

Repair or replacement of parts required because of misuse, improper care or storage, negligence, alteration, use of incompatible supplies or lack of specified maintenance shall be excluded.

• Normal maintenance items. Failures caused by adverse environmental, water conditions or improper drainage.

• Improper or unauthorized repair

• Any Ice Storage Bin that has been installed and or maintained inconsistent with the instructions provided by the Company

• Parts subject to damage beyond the control of the Company, or to the Ice Storage Bin’s which have been subject to accidents, damage in shipment, fire, floods, other hazards acts of God that are beyond the control of the Company.

• This Limited Warranty shall not apply if the Ice Storage Bin is modified with parts and assemblies other than those manufactured by the Company, unless the Company approves these modifications for specific locations in writing prior to the commencement of the modification.

22 Part Number STH045 8/15

LIMITATIONS OF LIABILITY

The preceding paragraphs set forth the exclusive remedy for all claims based on failure of, or defect in, Ice Storage Bins sold hereunder, whether the failure or defect arises before or during the Warranty period and whether a claim, however instituted , is based on contract, indemnity, Warranty, tort (including negligence), strict liability ,implied by stat ute, common law or otherwise, and Company and agents shall not be liable for any claims for personal injuries or consequential damages or loss, howsoever caused. Upon the expiration of the Warranty period, all such liability shall terminate. THE FOREGOING WARRANTIES ARE EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES, WHETHER WRITTEN, ORAL, IMPLIED OR STATUTORY. NO IMPLIED WARRANTY OF MERCANTABILITY OR FITNESS FOR PARTICULAR PURPOSE SHALL APPLY; COMPANY DOES NOT WARRANTY ANY PRODUCTS OR SERVICES OF OTHERS.

REMEDIES

The liability of Company for breach of any Warranty obligation

hereunder is limited to: (i) the repair or replacement of the Ice Storage Bin on which the liability is based, or with respect to services, re-performance of the services; or (ii) at Company’s option, the refund of the amount paid for the said equipment or services, Any breach by Company with respect to any item or unit or equipment or services shall be deemed a breach with respect to any item or unit of equipment or services shall be deemed a breach with respect to that item or unit or service only.

Part Number STH045 8/15 23

WARRANTY CLAIM PROCEDURE

Customer shall be responsible to: Complete and return Warranty registration card or

All Warranty service must be performed by an approved Koolaire contracted or authorized Service Representative.

To schedule a service appointment contact your local Koolaire Service Representative or visit us at www.kool-aire.com to find a Service Representative near you.

GOVERNING LAW

This Limited Wa rranty shall be governed b y the laws of the state of Wisconsin, USA, excluding their conflicts of law principles. The United Nations Convention on Contracts for the International Sale of Goods is hereby excluded in its entirety from application to this Limited Warranty.

For factory assistance contact: Manitowoc Ice Machine Division 21 10 South 26th Street, P.O. Box 1720 Manitowoc, WI 54221-1720 Telephone: 844-724-2273 Website:www.kool-aire.com

24 Part Number STH045 8/15

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: Must be at least 40°F (4°C) but must not exceed 110°F (43.4°C).

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

• The location must 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 air flow is in the back and out the sides. Refer to the chart 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.

Part Number STH045 8/15 25

Ice Machine Clearance Requirements

! Warning

Caution

Clearance Requirements

Do not obstruct ice machine vents or openings

K0250

Top/Sides 12" (30.5 cm) n/a

Back 5" (12.7 cm)* n/a

K0350 - K0420 K0500 - K0600 K1000 - K1350

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

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

*There is no minimum clearance required for water-cooled or remote ice machines. This value is recommended for efficient operation and servicing only.

Self-Contained

Air-Cooled

Self-Contained

Air-Cooled

Self-Contained

Water-Cooled*

Water-Cooled

and Remote*

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 co vered by the warranty.

26 Part Number STH045 8/15

Ice Machine Heat of Rejection

Caution

Series

Ice Machine

K0250 4600 5450 K0350 3800 6000 K0420 5400 6300 K0500 5300 6100 K0600 9000 13900 K1000 16250 18600 K1350 28300 34300

1 B.T.U./Hour 2 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.

Heat of Rejection Air

Conditioning

Peak

Leveling the Ice Machine

1. The leveling legs must be screwed into the bottom of the bin as far as possible.

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

2. Move the bin into its final position.

3. Use a level on top of the bin. Adjust each foot as necessary and level from front to back and side to side.

Part Number STH045 8/15 27

Electrical Requirements

! Warning

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).

Fuse/Circuit 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

Refer to ice machine data plate, for electrical requirements. The ice machine data plate information overrides all other published data.

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

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

28 Part Number STH045 8/15

Water Service/Drains

Important

! Warning

WATER SUPPLY

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

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

For ice making, connect to a potable water supply only.

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 inst alled 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 Koolaire distributor.

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

• Insulate water inlet lines to prevent condensation.

Part Number STH045 8/15 29

DRAIN CONNECTIONS

Caution

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.

• Install a tee to vent the ice machine drain to the atmosphere.

• Insulate drain lines to prevent condensation.

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).

Plumbing must conform to state and local codes

30 Part Number STH045 8/15

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