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K-0170
Installation Manual
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Manitowoc Ice K-0170 Installation Manual

Koolaire Ice Machines
UnderCounter Models
lnstallation, Operation and Maintenance Manual
Part Number 040004686 8/15
Section 1 General Information
Section 2 Installation Instructions
Table of Contents
Bin Caster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Arctic Pure Water Filter System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Manitowoc Cleaner and Sanitizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Fuse/Circuit Breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Total Circuit Ampacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Ground Fault Circuit Interrupter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
K130/K170/K210/K270 Ice Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Water Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Water Inlet Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Drain Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Cooling Tower Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Section 3 Operation
Ice Making Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Initial Start-up Or Start-up After Automatic Shut-off . . . . . . . . . . . . . . . . . . . . . . 10
Freeze Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Harvest Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Automatic Shut-off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Energized Parts Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Operational Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Siphon System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Water Float Valve Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Water Level Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Ice Bridge Thickness Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2 Part Number 040004686 8/15
Section 4 Maintenance
Section 5 Customer Support
Table of Contents (continued)
Interior Cleaning and Sanitizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Cleaning and Sanitizing Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Ice Machine Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Exterior Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Cleaning the Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Removal from Service/Winterization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Safety Limit Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Commercial Ice Machine Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Residential Ice Machine Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Part Number 040004686 8/15 3
Section 1
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Warning
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Caution
Important
!
Caution
Important
!
Warning
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Warning
!
Warning
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Warning
!
Warning
General Information

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:
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

As you work on Manitowoc equipment, be sure to read the procedural notices in this handbook. These notices supply helpful information which may assist you as you work.
Throughout this handbook, you will see the following types of procedural notices:

Read These Before Proceeding:

Proper installation, care and maintenance are essential for maximum performance and trouble-free operation of your equipment. Visit our website www.manitowocfsg.com for manual updates, translations, or contact information for service agents in your area.
Routine adjustments and maintenance procedures outlined in this handbook are not covered by the warranty.
Read this manual thoroughly before operating, installing or performing maintenance on the equipment. Failure to follow instructions in this manual can cause property damage, injury or death.
Do not use electrical appliances or accessories other than those supplied by Manitowoc for your ice machine model.
Two or more people or a lifting device are required to lift this appliance.
Text in an Important box provides you with information that may help you perform a procedure more efficiently. Disregarding this information will not cause damage or injury, but it may slow you down as you work.
NOTE: Text set off as a Note provides you with simple, but useful, extra information about the procedure you are performing.
This equipment contains high voltage electricity and refrigerant charge. Installation and repairs are to be performed by properly trained technicians aware of the dangers of dealing with high voltage electricity and refrigerant under pressure.The technician must also be certified in proper refrigerant handling and servicing procedures. All lockout and tag out procedures must be followed when working on this equipment.
Do not damage the refrigeration circuit when installing, maintaining or servicing the unit.
4 Part Number 040004686 8/15
Section 1 General Information
!
Warning
!
Warning
!
Warning
!
Warning
!
Warning
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Warning
!
Warning
!
Warning
!
Warning
Important
Do not operate equipment that has been misused, abused, neglected, damaged, or altered/modified from that of original manufactured specifications. This appliance is not intende d for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision concerning use of the appliance by a person responsible for their safety. Do not allow children to play with this appliance.
All covers and access panels must be in place and properly secured, before operating this equipment.
Do not obstruct machine vents or openings.
Do not store gasoline or other flammable vapors or liquids in the vicinity of this or any other appliance.
When using electric appliances, basic precautions mu st 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.
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.
Some 50 hz models may contain up to 150 grams of R290 (propane) refrigerant. R290 (propane) is flammable in concentrations of air between approximately 2.1% and 9.5% by volume (LEL lower explosion limit and UEL upper explosion limit). An ignition source at a temperature higher than 470°C is needed for a combustion to occur. Refer to nameplate to identify the type of refrigerant in your equipment. Only trained and qualified personnel aware of the dangers are allowed to work on the equipment.
Objects placed or dropped in the bin can affect human health and safety. Locate and remove any objects immediately.
The Commonwealth of Massachusetts requires that all water-cooled models must be connected only to a closed loop, cooling tower system.
Part Number 040004686 8/15 5
General Information Section 1
!
Warning
!
Warning
!
Warning

Model Numbers

This manual covers the following models:
Self-Contained
Air-Cooled
KD0172A -­KY0174A -­KR0270A KR0271W KD0272A KD0273W KY0274A KY0275W
PERSONAL INJURY POTENTIAL
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 allow children to perform cleaning or maintenance without adult supervision.
Self-Contained
Water-Cooled

Accessories

Contact your local distributor for these optional accessories:

BIN CASTER

Replaces standard legs.

ARCTIC PURE WATER FILTER SYSTEM

Engineered specifically for ice machines, Arctic Pure water filters are an efficient, dependable, and affordable method of inhibiting scale formation, filtering sediment, and removing chlorine taste and odor.

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 these ice machines
Cleaner Part Number Sanitizer Part Number
16oz 94-0456-3 16oz 94-0565-3 1 Gallon 94-0580-3 1 Gallon 94-0581-3
These ice machines do not have a water curtain covering the evaporator. The ice damper performs the functions of the water curtain see Section 3 for details.
Do not damage the refrigeration circuit when installing, maintaining or servicing the unit.
Do not use electrical appliances or accessories other than those supplied by Manitowoc for your ice machine model.
6 Part Number 040004686 8/15
Section 2
!
Caution
!
Caution
!
Warning
Installation Instructions

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.
• The air temperature must be at least 40F (4C), but must not exceed 110F (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.
Self-Contained
Air-Cooled
Top/Sides 5" (127 mm)* 5" (127 mm)*
Back 5" (127 mm)* 5" (127 mm)*
NOTE: The ice machine may be built into a cabin et . 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.
The ice machine must be protected if it will be subjected to temperatures below 32F (0C). Failure caused by exposure to freezing temperatures is not covered by the warranty. See “Removal from Service/Winterization” Section 4.
Self-Contained
Water-Cooled

Ice Machine Heat of Rejection

Series
Ice Machine
K170 2200 2600 K270 3800 6000
* 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 -c on tained air ­cooled ice machines are installed.
Air Conditioning** Peak
Heat of Rejection*

Leveling the Ice Machine

1. Screw the leveling legs onto the bottom of the ice machine.
2. Screw the foot of each leg in as far as possible.
The legs must be screwed in tightly to prevent them from bending.
3. Move the ice machine into its final position.
Do not obstruct ice machine vents or openings.
4. Level the ice machine to assure 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 ½" caster assembly is available for use in place of the legs on the K130, K170, K210 and K270. Installation instructions are supplied with the casters.
Part Number 040004686 8/15 7
Installation Instructions Section 2
!
Warning
!
Warning
!
Warning

Electrical Service

GENERAL

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

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 8’ power cord, and NEMA 5-15P-plug configuration.
The 208-230/1/60 and 230/50/1 ice machines are factory pre-wired with a 8’ 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).
The ice machine must be grounded in accordance with national and local electrical codes.

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.

GROUND FAULT CIRCUIT INTERRUPTER

Ground Fault Circuit Interrupter (GFCI/GFI) protection is a system that shuts down the electric circuit (opens it) when it senses an unexpected loss of power, presumably to ground. Koolaire does not recommend the use of a GFCI/GFI circuit protection with our equipment. If code requires the use of a GFCI/GFI then you must follow the local code. The circuit must be dedicated, sized properly and there must be a panel GFCI/GFI breaker. We do not recommend GFCI/GFI outlets as they are known for more intermittent n uisance trips than panel breakers.
PERSONAL INJURY POTENTIAL
If the supply cord is damaged, do not operate the equipment until the cord is replaced by a service agent or similarly qualified person.

K130/K170/K210/K270 ICE MACHINE

Ice Machine Voltage
Phase
Cycle
K170 1 15/1/60 15 7.2 -- --
208-230/1/60 15 4.0* -- --
230/1/50 15 4.0* -- --
K270 1 15/1/60 15 10.7 15 9.9
208-230/1/60 15 5.2 15 4.7
230/1/50 15 5.2 15 4.7
* Indicates preliminary data
Air-Cooled Water Cooled
Maximum Fuse/
Circuit Breaker
Total Amps Maximum Fuse/
Circuit Breaker
Total Amps
8 Part Number 040004686 8/15
Section 2 Installation Instructions
!
Warning
Important

Water Service/Drains

WATER SUPPLY

Local water conditions may require treatment of the water to inhibit scale formation, filter sediment, remove chlorine, and improve taste and clarity.
PERSONAL INJURY POTENTIAL
For ice making, connect to a potable water supply only .
If you are installing a water filter system, refer to the Installation Instructions supplied with the filter system for ice making water inlet connections.

WATER INLET LINES

Follow these guidelines to install water inlet lines:
• Do not connect the ice machine to a hot 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 (80 psig-551.5 kPA) recommended pressure, obtain a water pressure regulator from your local distributor.
• Install a water shut-off valve and union for both the ice making and condenser water lines.
• Insulate water inlet lines to prevent condensation.

DRAIN CONNECTIONS

Follow these guidelines when installing drain lines to prevent drain water from flowing back into the ice machine and storage bin:
• Drain lines must have a 1.5 inch drop per 5 feet of run (2.5 cm per meter), and must not create traps.
• The floor drain must be large enough to accommodate drainage from all drains.
• Run separate bin and water-cooled condenser dra in lines. Insulate them to prevent condensation.
• Vent the bin drai n to the atmosphere. Do not vent the condenser drain on water-cooled models.

COOLING TOWER APPLICATIONS

(Water-Cooled Models) A water cooling tower installation does not require
modification of the ice machine. The water regulator valve for the condenser continues to control the refrigeration discharge pressure.
It is necessary to know the amount of heat rejection and the pressure drop through the condenser and water valves (inlet and outlet) when using a cooling tower on an ice machine.
• Water entering the condenser must not exceed 90F (32C).
• Water flow through the con denser must not exceed 5 gallons (19 liters) per minute.
• Allow for a pressure drop of 7 psi (48 kPA) between the condenser water inlet and the outlet of the ice machine.
• Water exiting the condenser must not exceed 110F (43C).

Water Supply and Drain Line Sizing/Connections

Location Water
Temperature
Ice Making
Water Inlet
Condenser W ater
Inlet
Condenser W ater
Drain
Bin Drain
Part Number 040004686 8/15 9
40F (4C) Min.
90F (32C) Max.
40F (4C) Min.
90F (32C) Max.
--- --- 1/2" Female Pipe
--- --- 1/2" Female Pipe
20 psi (137.9 kPA) Min.
80 psi (551.5 kPA) Max.
20 psi (137.9 kPA) Min.
150 psi (1034.2 kPA) Max.
Water
Pressure
Ice Machine
Fitting
3/8" Female Pipe
Thread
3/8" Female Pipe
Thread
K270 Only
1/2" Female Pipe
Thread
Thread
Thread
Tubing Size Up to Ice
Machine Fitting
3/8" (9.5 mm) minimum
inside diameter
3/8" (9.5 mm) minimum
inside diameter
K270 Only
1/2" (12.7 mm)
minimum inside diameter
1/2" (12.7 mm) minimum
inside diameter
1/2"” (12.7 mm) minimum
inside diameter
Installation Instructions Section 2
!
Warning
Before Starting the Ice Machine
All ice machines are factory-operated and adjusted before shipment. Normally, new installations do not require any adjustment.
To ensure proper operation, follow the Operational Checks in Section 3 of this manual. Starting the ice machine and completing the Operational Checks are the responsibilities of the owner/operator.
Adjustments and maintenance procedures outlined in this manual are not covered by the warranty.
PERSONAL INJURY POTENTIAL
Do not operate equipment th at has been misused, abused, neglected, damaged, or altered/modified from that of original manufactured specifications.

Installation Checklist

Are the ice machine and bin drains vented?
Is the ice machine level?
Are all electrical leads free from contact with refrigeration lines and moving equipment?
Has all of the internal packing been removed?
Has the owner/operator been instructed
Have all of the electrical and water connection s been made?
regarding maintenance and the us e of Cle an er and Sanitizer?
Has the supply voltage been tested and checked against the rating on the nameplate?
Is there proper clearance around the ice machine for air circulation?
Is the ice machine grounded and polarity correct?
Has the ice machine been installed where ambient temperatures will remain in the range of 40° – 110°F (4° – 43°C)?
Has the ice machine been installed where the incoming water temperature will remain in the range of 40° – 90°F (4° – 32°C)?
Is there a separate drain for the water-coole d condenser?
Is there a separate drain for the bin?
Has the owner/operator completed the warranty registration card?
Has the ice machine and bin been sanitized?
Is the toggle switch set to ice? (The toggle switch is located directly behind the front panel).
Is the ice thickness control set correctly? (Refer to Operational Checks to check/set the correct ice bridge thickness).
Is the float valve in the OPEN position?
10 Part Number 040004686 8/15

Section 3 Operation

Section 3
Operation

Ice Making Sequence of Operation

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 start­up 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 energizes to prechill the evaporator prior to water flow.
4. Freeze
The water pump starts after the 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.

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 valv e 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 040004686 8/15 11
Operation Section 3

Energized Parts Chart

CONTROL BOARD RELAYS RELAY
INITIAL START-UP/
START UP AFTER AUTO SHUT-OFF:
1. Pressure
Equalization
2. Refrigeration System Start-up
FREEZE
SEQUENCE:
3. Pre-Chill
4. Freeze
HARVEST
SEQUENCE:
5. Harvest
1 2 3 3A 3B
WATER
PUMP
OFF ON OFF OFF OFF
OFF ON ON ON ON
OFF OFF ON ON ON
ON OFF ON ON ON
OFF ON ON ON ON
HOT GAS
VALVE
RELAY
COIL
COMPRESSOR CONDENSER
FAN MOTOR
LENGTH
of “ON”
TIME
15
Seconds
5
Seconds
30
Seconds
Until 7 sec.
water contact
with ice
thickness
probe
Bin switch activation
AUTOMATIC SHUT-
OFF:
6. Auto Shut-Off
* Condenser Fan Motor: The fan motor is wired through a fan cycle pressure control, therefore, it may cycle on and off.
OFF OFF OFF OFF OFF
Until
bin switch
re-closes
12 Part Number 040004686 8/15
Section 3 Operation
WATER
LEVEL
SIPHON
CAP
STANDPIPE
DRAIN
PRESS TO
OPEN
PRESS TO
CLOSE

Operational Checks

GENERAL

Your Koolaire ice machine was factory-operated and adjusted before shipment. Normally , a newly installed ice machine does not require any adjustment.
To ensure proper operation, always follow these Operational Checks when starting the ice machine:
• for the first time
• after a prolonged out of service period
• after cleaning and sanitizing Routine adjustments and maintenance procedures
outlined in this manual are not covered by the warranty.

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 st artin g 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.
Siphon System Check
Follow steps 1 through 6 under water level check.

WATER FLOAT VALVE CHECK

Before water will flow into the water trough the float valve shut-off must be in the OPEN position.
Water Level
Part Number 040004686 8/15 13
Operation Section 3
SIPHON CAP
SET THE WA TER LEVEL
TO THE LINE IN THE
WATER TROUGH
ADJUSTING SCREW
1/8" ICE BRIDGE THICKNESS

WATER LEVEL CHECK

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" (6.3mm) to 3/8" (9.5mm) below the top of the standpipe a line in the water trough indicates the correct level.
Water Level
The float valve is factory-set for the proper water level. If adjustments are necessary:
1. Verify the ice machine is level (see page 2-4).
2. Remove the siphon cap from the standpipe.

ICE BRIDGE THICKNESS CHECK

The ice thickness probe is factory-set to maintain the ice bridge thickness at 1/8" (3.2 mm).
1. Inspect the bridge connecting the cubes. It should be about 1/8" (3.2 mm) thick.
2. If adjustment is necessary, turn the ice thickness probe adjustment screw clockwise to increase bridge thickness, or counterclockwise to decrease bridge thickness.
NOTE: Turning the adjustment 1/3 of a turn will change the ice thickness about 1/16" (1.5 mm).
3. Place the ma in 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:
5. Loosen the two screws on the float valve bracket.
6. Raise or lower the float valve assembly as necessary, then tighten the screws.
7. 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.
8. Replace the siphon cap on the standpipe, and verify water level and siphon action by repeating steps 3 through 5.
Ice Thickness Check
Make sure the ice thickness probe wire and the bracket do not restrict movement of the probe.
14 Part Number 040004686 8/15

Section 4 Maintenance

!
Caution
!
Caution
!
Warning
!
Caution
!
Warning
Section 4
Maintenance

Interior Cleaning and Sanitizing

GENERAL

Clean and sanitize the ice machine every six months for efficient operation. If the ice machine requires more frequent cleaning and sanitizing, consult a qualified service company to test the water quality and recommend appropriate water treatment.
The ice machine must be taken apart for cleaning and sanitizing.
Use only Koolaire approved Ice Machine Cleaner (part number 94-0546-3) and Sanitizer (part number 94-0565-3). It is a violation of Federal law to use these solutions in a manner inconsistent with their labeling. Read and understand all labels printed on bottles before use.

CLEANING AND SANITIZING PROCEDURE

Do not mix Ice Machine Cleaner and Sanitizer solutions together. It is a violation of Federal law to use these solutions in a manner inconsistent with their labeling.
Ice machine cleaner is used to remove lime scale and mineral deposits. Ice machine sanitizer disinfects and removes algae and slime.
Step 1 Set the toggle switch to the OFF position after ice falls from the evaporator at the end of a Harvest cycle. Or, set the switch to the OFF position and allow the ice to melt off the evaporator.
Never use anything to force ice from the evaporator. Damage may result.
Step 2 Remove all ice from the bin. Step 3 T o st art a cleaning cycle, move the toggle switch
to the WASH position. Step 4 Add the proper amount of Ice Machine Cleaner
to the water trough.
Model Amount of Cleaner
K170 2 ounces (60 ml) K270 2 ounces (60 ml)
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.
Wear rubber gloves and safety gogg les (an d/or face shield) when handling Ice Machine Cleaner or Sanitizer.
Part Number 040004686 8/15 15
Disconnect electric power to the ice machine at the electric switch box before proceeding.
Maintenance Section 4
DO NOT SOAK
WATER PUMP MOTOR IN
CLEANER OR SANITIZER
SOLUTIONS
When Used - REMOVE
THUMBSCREWS AND
WATER PUMP COVER
ICE THICKNESS
PROBE
COMPRESS SIDES OF ICE
THICKNESS PROBE
Step 6 Remove parts for cleaning.
A. Remove T wo Thumbscrews a nd W ater 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
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 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 comple tely. Incomplete rinsing and drying of the ice thickness probe can cause premature harvest.
16 Part Number 040004686 8/15
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