Part Number: 000018481 10/25
Koolaire Ice Machines
KP & KT Series
Installation, Operation and Maintenance Manual
,
Caution
Read this instruction before operating this equipment.
Original Document
Safety Notices
Read these precautions to prevent
personal injury:
• 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.
• Routine adjustments and maintenance
procedures outlined in this manual are
not covered by the warranty.
• Proper installation, care and
maintenance are essential for
maximum performance and trouble-
free operation of your equipment. Visit
our website www.manitowocice.com
for manual updates, translations, or
contact information for service agents
in your area.
• 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.
• This equipment is intended for indoor
use only. Do not install or operate this
equipment in outdoor areas.
Definitions
DANGER
Indicates a hazardous situation that, if not
avoided, will result in death or serious
injury. This applies to the most extreme
situations.
n
Warning
Indicates a hazardous situation that, if not
avoided, could result in death or serious
injury.
,
Caution
Indicates a hazardous situation that, if not
avoided, could result in minor or moderate
injury.
Notice
Indicates information considered
important, but not hazard-related (e.g.
messages relating to property damage).
NOTE: Indicates useful, extra information
about the procedure you are performing.
n
Warning
Follow these precautions to prevent personal injury during installation of this
equipment:
• Installation must comply with all
applicable equipment fire and health
codes with the authority having
jurisdiction.
• To avoid instability the installation area
must be capable of supporting the
combined weight of the equipment and
product. Additionally the equipment
must be level side to side and front to
back.
• Ice machines require a deflector when
installed on an ice storage bin. Prior to
using a non-OEM ice storage system
with this ice machine, contact the
bin manufacturer to assure their ice
deflector is compatible.
• Prior to installing a non-OEM ice storage
system with this ice machine, follow the
manufacturers installation procedures
and verify the location and installation
meets the local/national mechanical
codes and stability requirements.
• Remove all removable panels before
lifting and installing and use appropriate
safety equipment during installation
and servicing. Two or more people are
required to lift or move this appliance to
prevent tipping and/or injury.
• Legs or casters must be installed and
the legs/casters must be screwed in
completely. When casters are installed
the mass of this unit will allow it to move
uncontrolled on an inclined surface.
These units must be tethered/secured
to comply with all applicable codes.
Swivel casters must be mounted on the
front and rigid casters must be mounted
on the rear. Lock the front casters after
installation is complete.
• Connect to a potable water supply only.
• Do not damage the refrigeration circuit
when installing, maintaining or servicing
the unit.
• This equipment contains refrigerant
charge. Installation of the line sets must
be performed by a properly trained and
EPA-certified refrigeration technician
aware of the dangers of dealing with
refrigerant charged equipment.
DANGER
A3
Follow these flammable refrigeration system requirements during
installation, use or repair of this equipment:
• Refer to nameplate - Ice machine models
may contain up to 500 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 878°F (470°C) is needed for a
combustion to occur. Refer to nameplate
to identify the type of refrigerant in your
equipment.
• To minimize the risk of ignition due to
improper installation, replacement parts
or service procedures, only refrigeration
technicians with flammable refrigerant
training who are aware of the dangers of
dealing with high voltage electricity and
refrigerant under pressure are allowed to
work on this equipment.
• All replacement parts must be like
components obtained from the
equipment manufacturers authorized
replacement part network.
• This equipment must be installed in
accordance with the ASHRAE 15 Safety
Standard for Refrigeration Systems.
• This equipment can not be installed in
corridors or hallways of public buildings.
• Installation must comply with all
applicable equipment fire and health
codes with the authority having
jurisdiction.
• Minimum room size may be required,
refer to ice machine label.
• Multiple R290 units can be installed
in a single room, but their cumulative
refrigerant charge needs to be
considered when determining the safe
room size.
• All lockout and tag out procedures
must be followed when working on this
equipment.
• This equipment contains high voltage
electricity and refrigerant charge.
Shorting electrical wires to refrigeration
tubing may result in an explosion. All
electrical power must be disconnected
from the system before servicing the
system. Refrigerant leaks, can result in
serious injury or death from explosion,
fire, or contact with refrigerant or
lubricant mists.
• Do not damage the refrigeration circuit
when installing, maintaining or servicing
the unit. Never use sharp objects or
tools to remove ice or frost. Do not use
mechanical devices or other means to
accelerate the defrosting process.
• Well-ventilated areas are recommended
for installation and storage.
• Leak pressure, leak hole size, wind
speed, and the presence of objects like
furniture within the room can also affect
the concentration and distribution of
R290 during a leak.
n
Warning
Follow these electrical requirements
during installation of this equipment:
• All field wiring must conform to all
applicable codes of the authority
having jurisdiction. It is the
responsibility of the end user to
provide the disconnect means to satisfy
local codes. Refer to rating plate for
proper voltage.
• This appliance must be grounded.
• This equipment must be positioned so
that the plug is accessible unless other
means for disconnection from the
power supply (e.g., circuit breaker or
disconnect switch) is provided.
• Check all wiring connections, including
factory terminals, before operation.
Connections can become loose during
shipment and installation.
DANGER
Do not operate equipment that has
been 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, clean or
maintain this appliance without proper
supervision.
n
Warning
Follow these precautions to prevent
personal injury while operating or
maintaining this equipment:
• 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.
• Crush/Pinch Hazard. Keep hands clear
of moving components. Components
can move without warning unless
power is disconnected and all potential
energy is removed.
• Moisture collecting on the floor will
create a slippery surface. Clean up
any water on the floor immediately to
prevent a slip hazard.
• Objects placed or dropped in the bin
can affect human health and safety.
Locate and remove any objects
immediately.
• Never use sharp objects or tools
to remove ice or frost. Do not use
mechanical devices or other means to
accelerate the defrosting process.
• When using cleaning fluids or
chemicals, rubber gloves and eye
protection (and/or face shield) must be
worn.
DANGER
Follow these precautions to prevent personal injury during use and maintenance of this
equipment:
• It is the responsibility of the equipment
owner to perform a Personal Protective
Equipment Hazard Assessment to ensure
adequate protection during maintenance
procedures.
• Do Not Store Or Use Gasoline Or Other
Flammable Vapors Or Liquids In The
Vicinity Of This Or Any Other Appliance.
Never use flammable oil soaked cloths
or combustible cleaning solutions for
cleaning.
• All covers and access panels must be
in place and properly secured when
operating this equipment.
• Risk of fire/shock. All minimum
clearances must be maintained. Do not
obstruct vents or openings.
• Failure to disconnect power at the main
power supply disconnect could result
in serious injury or death. The power
switch DOES NOT disconnect all incoming
power.
• All utility connections and fixtures must
be maintained in accordance with the
authority having jurisdiction.
• Turn off and lockout all utilities (gas,
electric, water) according to approved
practices during maintenance or
servicing.
• Units with two power cords must be
plugged into individual branch circuits.
During movement, cleaning or repair it is
necessary to unplug both power cords.
• Never use a high-pressure water jet for
cleaning on the interior or exterior of
this unit. Do not use power cleaning
equipment, steel wool, scrapers or wire
brushes on stainless steel or painted
surfaces.
• Two or more people are required to
move this equipment to prevent tipping.
• Locking the front casters after
moving is the owner’s and operator’s
responsibility. When casters are installed,
the mass of this unit will allow it to move
uncontrolled on an inclined surface.
These units must be tethered/secured to
comply with all applicable codes.
• The on-site supervisor is responsible for
ensuring that operators are made aware
of the inherent dangers of operating this
equipment.
• Do not operate any appliance with a
damaged cord or plug. All repairs must
be performed by a qualified service
company.
• Do not store or use electrical appliances
inside the ice machine or ice storage
areas.
THIS PAGE INTENTIONALLY LEFT BLANK
Table of Contents
Part Number: 000018481 10/25 9
Section 1
General Information
Model Numbers ......................................................................11
Head Sections - Air/Water/Remote Ice Machines ................ 11
Remote Condensers .............................................................. 11
Accessories ..............................................................................12
How To Read A Model Number ................................................13
Section 2
Installation
Location of Ice Machine ...........................................................15
Installation Requirements ........................................................ 15
Operating Temperatures ...................................................... 16
Minimum Room Size ............................................................. 16
Refrigerant Charge ................................................................ 17
Clearance Requirements ....................................................... 17
Ice Machine Heat of Rejection .............................................. 18
Bin Requirements ....................................................................18
Dispenser Requirements ..........................................................19
Air Baffle .................................................................................20
Electrical Requirements ........................................................... 21
Minimum Power Cord Specifications .................................... 21
Maximum Breaker Size & Minimum Circuit Amperage Chart ....22
Water and Drain Connections ..................................................23
Water Supply and Drain Line Sizing/Connections .....................24
Connection Locations ........................................................... 25
Auxiliary Base Drain Installation ........................................... 25
Cooling Tower Applications (Water-Cooled Models) ............ 25
Remote Systems ......................................................................26
Installation Check List .............................................................. 30
Before Starting the Ice Machine ...............................................31
Starting the Ice Machine .......................................................... 31
Warranty ................................................................................. 31
10 Part Number: 000018481 10/25
Table of Contents (continued)
Section 3
Operation
Ice Making Sequence of Operation .......................................... 33
Control Board Timers ............................................................ 33
Service Limits ........................................................................ 34
Operational Checks ..................................................................34
General ................................................................................. 34
Minimum/Maximum Slab Weights ....................................... 35
Ice Thickness Check .............................................................. 35
Section 4
Maintenance
De-scaling and Sanitizing ......................................................... 37
Exterior Cleaning ..................................................................... 37
De-scaler and Sanitizer Solutions .............................................38
Descaling Procedure ............................................................. 38
Sanitizing Procedure ............................................................. 39
Parts Removal for Descaling/Sanitizing .................................... 40
Remedial De-scaling Procedure ................................................41
Door Removal ..........................................................................41
Cleaning the Air Filter and Condenser ......................................42
Removal from Service/Winterization .......................................42
General ................................................................................. 42
Section 5
Troubleshooting
Before Calling for Service Checklist ..........................................45
Service Limit Feature ...............................................................47
Part Number: 000018481 10/25 11
Model Numbers
This manual covers the following models:
HEAD SECTIONS ͳ
AIR/WATER/REMOTE ICE MACHINES
R290 Models
Self-Contained
Air-Cooled
Self-Contained
Water-Cooled
Remote
Air-Cooled
R290 - 22" Wide Models
KDP0420A
KYP0420A
KDP0420W
KYP0420W
----
----
R290 - 30" Wide Models
KDP0300A
KYP0300A
KDP0300W
KDY0300W
----
----
KDP0400A
KYP0400A
KDP0400W
KYP0400W
----
----
KDP0500A
KYP0500A
KDP0500W
KYP0500W
----
----
KDP0700A
KYP0700A
KDP0700W
KYP0700W
----
----
KDP1000A
KYP1000A
KDP1000W
KYP1000W
----
----
R410 Models
Self-Contained
Air-Cooled
Self-
Contained
Water-Cooled
Remote
Air-Cooled
R410A - 22" Wide Models
KDT0420A
KYT0420A
KDT0420W
KYT0420W
----
----
KDT0620A
KYT0620A
KDT0620W
KYT0620W
----
----
R410A - 30" Wide Models
KDT0500A
KYT0500A
KDT0500W
KYT0500W
----
----
KDT0700A
KYT0700A
KDT0700W
KYT0700W
----
----
KDT1000A
KYT1000A
KDT1000W
KYT1000W
KYT1000N
KDT1000N
R410A - 48" Wide Models
KDT1700A
KYT1700A
KDT1700W
KYT1700W
KYT1700N
KDT1700N
REMOTE CONDENSERS ͳ
USED WITH REMOTE AIRͳCOOLED
ICE MACHINES
R410A Models
JCT1200
JCT1500
Section 1
General Information
12 Part Number: 000018481 10/25
General Information Section 1
Accessories
Contact your local distributor for
replacement parts for accessories.
Ice Deflector
An ice deflector is required when the
ice machine is installed on a bin. An ice
deflector is not required when the ice
machine is installed on a dispenser.
De-scaler and Sanitizer
Manitowoc De-scaler and Sanitizer are
available in convenient 16 oz (473 ml) and
1 gal (3.78 l) bottles. These are the only
solutions approved for use with Manitowoc
products.
Arctic Pure Water Filters
Engineered specifically for Manitowoc
ice machines, Arctic Pure water filters are
an efficient method of inhibiting scale
formation, filtering sediment, and removing
chlorine taste and odor.
Top Air Discharge Kit
This kit can be used on select ice machine
models. Directs warm exhaust air upward
rather than out the side panels.
Part Number: 000018481 10/25 13
Section 1 General Information
How To Read A Model Number
KYT 1700 A — 261
Ice Machine Model
K - Koolaire Model
Ice Cube Size
D - Dice
Y - Half-Dice
Refrigerant
P - R290
T - R410
Voltage
161 - 115/60/1
261 - 208-230/60/1
251 - 230/50/1
263 - 208-230/60/3
Nominal Production
Condenser Type
A - Self-Contained Air-Cooled
W - Self-Contained Water-Cooled
N - Remote Air-Cooled
NOTE: These products are hermetically sealed and contain fluorinated greenhouse gas.
14 Part Number: 000018481 10/25
General Information Section 1
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Part Number: 000018481 10/25 15
Location of Ice Machine
The location selected for the ice machine
head section must meet the following
criteria. If any of these criteria are not met,
select another location.
• The location must be indoors and
must be free of airborne and other
contaminants.
• The location must not be near garbage
or other contaminants.
• The location must not be near
heat-generating equipment or in direct
sunlight and protected from weather.
• 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.
• The location must be capable of
supporting the weight of the ice machine
and a full bin of ice.
• All utilities must be within 6 feet
(2 m) of the unit for installation and
serviceability.
n
Warning
Two or more people or a lifting device are
required to lift this appliance.
Installation Requirements
• The ice machine and bin must be level.
• Vent the ice machine and bin drains
separately.
• Bin drain termination must have an air
gap.
• The ice machine and bin must be
de-scaled and sanitized after installation.
• The drain line must contain a union or
other suitable means of disconnection at
the ice machine.
Section 2
Installation
16 Part Number: 000018481 10/25
Installation Section 2
OPERATING TEMPERATURES
Model
Minimum Air
Temperature
Maximum Air
Temperature
All Ice
Machine
Head
Sections
35°F
2°C
110°F
43°C
Remote
Condensers
Minimum Air
Temperature
Maximum Air
Temperature
All Models
-20°F
-29°C
120°F
49°C
Notice
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.
MINIMUM ROOM SIZE
R290 ONLY
In order to avoid the creation of a
flammable gas-air mixture if a leak in
the refrigeration system occurs, the size
of the room in which the machine may
be installed depends on the amount of
refrigerant used.
The ice machines listed below cannot
be installed in hallways, public corridors,
public lobbies, evacuation routes and/or
small spaces.
Model
Minimum Room Size
sq ft (sq m)
Self-
Contained
Air-Cooled
Self-
Contained
Water-Cooled
KP0300 77.5 sq ft
(7.2 sq m)
---
KP0400 87.0 sq ft
(8.1 sq m)
77.5 sq ft
(7.2 sq m)
KP0420
KP0500 77.5 sq ft
(7.2 sq m)
93 sq ft
(8.6 sq m)
KP0700 159 sq ft
(14.8 sq m)
159 sq ft
(14.8 sq m)
KP1000 206 sq ft
(19.1 sq m)
206 sq ft
(19.1 sq m)
Part Number: 000018481 10/25 17
Section 2 Installation
REFRIGERANT CHARGE
R290 ONLY
Model
Self-
Contained
Air-Cooled
Self-
Contained
Water-Cooled
KP0300 5.3 oz (150 g) ---
KP0400
5.9 oz (170 g) 5.3 oz (150 g)
KP0420
KP0500 5.3 oz (150 g) 6.5 oz (180 g)
KP0700 10.9 oz (310 g)
KP1000 14.1 oz (400 g)
Multiple R290 units can be installed
in a single room, but their cumulative
refrigerant charge needs to be considered
when determining the safe room size.
CLEARANCE REQUIREMENTS
n
Warning
Do not obstruct ice machine vents or
openings.
KP0300
Self-
Contained
Air-Cooled
Self-Contained
Water-Cooled
Top/Sides 16" (40.6 cm) N/A
Back 5" (12.7 cm) N/A
KT0300
KP0420
Self-
Contained
Air-Cooled
Self-Contained
Water-Cooled
Top/Sides 12" (30.5 cm) N/A
Back 5" (12.7 cm) N/A
KT0400/KP0400
KT0420
KP0500/KT0500
KP0700/KT0700
KP1000/KT1000
KT1700
Self-
Contained
Air-Cooled
Water-
Cooled and
Remote*
Top/Sides 8" (20.3 cm) 8" (20.3 cm)
Back 5" (12.7 cm) 5" (12.7 cm)
KT0420
Tropical
Rating
50 Hz Only
Self-
Contained
Air-Cooled
Water-
Cooled
Top 24" (61.0 cm) 8" (20.3 cm)
Sides 12" (30.5 cm) 8" (20.3 cm)
Back 5" (12.7 cm) 5" (12.7 cm)
KT1000
Tropical
Rating
50 Hz Only
Self-
Contained
Air-Cooled
Water-
Cooled
and Remote
Top 12" (30.5 cm) 8" (20.3 cm)
Sides 8" (20.3 cm) 8" (20.3 cm)
Back 5" (12.7 cm) 5" (12.7 cm)
18 Part Number: 000018481 10/25
Installation Section 2
ICE MACHINE HEAT OF REJECTION
Series
Ice Machine
Heat of Rejection
*
Air
Conditioning
**
Peak
KP0300
KT0300 4600 5450
KP0400
KT0400 3800 6000
KP0420
KT0420 5400 6300
KP0500
KT0500 5300 6100
KP0700
KT0700 12400 13700
KP1000
KT1000 60 Hz 15400 17100
KT1000 50 Hz 14600 16200
KT1700 24700 29000
* B.T.U./Hour
** Heat of rejection varies during the ice making
cycle, shown is average.
^ Indicates preliminary data.
Use this information when:
• Sizing air conditioning equipment where
self-contained air-cooled ice machines
are installed.
• Determining the load on a cooling tower.
Use the peak figure for sizing the load.
Notice
Condensers must be mounted horizontally
with the fan motor on top with nothing
obstructing it.
Bin Installation Requirements
• The installation area must be capable of
supporting the combined weight of the
equipment and product.
• All ice machines installed on a bin
require an ice deflector.
• Manitowoc bins have a deflector
installed and require no modifications
when used with a forward-facing
evaporator.
• Ice machines with multiple evaporators
require a deflector kit.
• Align sides and back of ice machine with
sides and back of bin when placing ice
machine on bin.
• Optional sales kits are available to adapt
various sized or multiple ice machines on
large bins.
Part Number: 000018481 10/25 19
Section 2 Installation
Bin Installation
NOTE: When using casters, the units must
be tethered or secured to comply with all
applicable codes. Swivel casters must be
mounted on the front and rigid casters
must be mounted on the rear. Lock the
front casters after installation is complete.
1. Remove threaded plug from drain
fitting.
2. Screw the leveling legs onto the
bottom of the bin.
3. Screw the foot of each leg in as far as
possible.
4. Move the bin into its final position.
5. Level the bin to assure that the bin
door closes and seals properly. Use a
level on top of the bin. Turn the base
of each foot as necessary to level the
bin.
6. Inspect bin gasket prior to ice machine
installation. (Manitowoc bins come
with a closed cell foam gasket installed
along the top surface of the bin.)
7. Remove all panels from ice machine
before lifting and installing on bin.
Remove front panel, top cover, left and
right side panels.
Dispenser Requirements
Observe following recommendations unless
required by the dispenser manufacturer.
• The installation area must be capable of
supporting the combined weight of the
equipment and product.
• Dispensers requires separate electrical
outlet from the ice machine.
• An adapter is not required for ice
machines that match the dispenser size.
• Refer to Manitowoc “Suggested List Price
Standard Equipment and Accessories”
for required adapters, deflectors, and
dispenser baffles. Requirements vary by
model.
• Ice level management is recommended
to prevent water leakage or movement
of ice machine during agitation.
• Align sides and back of ice machine with
sides and back of dispenser when placing
ice machine.
• Front Panel must swing freely for service
access.
• Follow ice machine installation
procedures in this manual and any
additional installation requirements
specified by the dispenser manufacturer.
20 Part Number: 000018481 10/25
Installation Section 2
Air Baffle
Self-Contained Air-Cooled Only
To install:
1. Loosen the back panel screws next to
the condenser.
2. Align the keyhole slots in the air baffle
with the screw holes and slide the
baffle down to lock in place.
Air Baffle
Air Gap
1. A greater than 1-inch air gap is built
into the ice machine for back-flow
prevention. This air gap exceeds NSF 12
requirements for back-flow prevention.
This air gap is greater than 1”
Part Number: 000018481 10/25 21
Section 2 Installation
Electrical Requirements
All electrical work, including wire routing
and grounding, must conform to local, state
and national electrical codes. The following
precautions must be observed:
• The ice machine must be grounded.
• A separate fuse/circuit breaker (dedicated
circuit) must be provided for each ice
machine head section, condenser or
condensing unit.
• A qualified electrician must determine
proper wire size (gauge) dependent upon
location, materials used and length of run
(minimum circuit ampacity can be used
to help select the wire size).
n
Warning
All wiring must conform to local, state and
national codes. The ice machine must be
grounded in accordance with national and
local electrical codes.
Voltage
The maximum allowable voltage variation
is +10%/-5% of the rated voltage at ice
machine start-up (when the electrical load
is highest).
Fuse/Circuit Breaker
A separate electrical disconnect, which
disconnects all poles and has 1/8” (3 mm)
contact separation, must be provided
for fixed wiring. Circuit breakers must be
H.A.C.R. rated in USA.
Minimum Circuit Ampacity
The minimum circuit ampacity is used to
help select the wire size of the electrical
supply. (Minimum circuit ampacity is not the
ice machine’s running amp load.)
The wire size (or gauge) also depends on
location, materials used, length of run, etc.,
so it must be determined by a qualified
electrician.
Ground Fault Circuit Interrupter
We do not recommend the use of a GFCI/GFI
circuit protection with our equipment. If a
GFCI/GFI is required by code, use a GFCI/GFI
breaker rather than an outlet, which is more
prone to intermittent nuisance trips than
panel circuit breakers.
MINIMUM POWER CORD
SPECIFICATIONS
Maximum
Breaker Size
Minimum
Wire
Size
Maximum
Length of
Power Cord
15 amp 14 gauge 6 feet (1.83 m)
20 amp 12 gauge 6 feet (1.83 m)
30 amp 10 gauge 6 feet (1.83 m)
40 amp 8 gauge 6 feet (1.83 m)
n
Warning
Temporary electrical installations of
more than 600 volts may be used only
during periods of tests, emergencies, or
construction-like activities.
Temporary wiring must be removed
immediately upon completion of the
project or purpose for which the wiring
was installed.
22 Part Number: 000018481 10/25
Installation Section 2
Maximum Breaker Size & Minimum Circuit Amperage Chart
NOTE: Due to continuous product improvements, this information is for reference only.
Please refer to the ice machine data plate to verify electrical data. Model/Serial data plate
information overrides information listed on this page.
Ice
Machine
Voltage/
Phase/
Cycle
Air-Cooled Water-Cooled Remote
Maximum
Fuse/
Circuit
Breaker
Minimum
Circuit
Amps
Maximum
Fuse/
Circuit
Breaker
Minimum
Circuit
Amps
Maximum
Fuse/
Circuit
Breaker
Minimum
Circuit
Amps
KP0300 115/1/60 15 8.2 --- ---
--- ---
KT0300
115/1/60 15 9.44 --- --- --- ---
230/1/50 15 4.5 --- --- --- ---
230/1/60 15 4.7 --- --- --- ---
KP0400 115/1/60 15 11.4 15 10.7
--- ---
KT0400
115/1/60 15 12.1 15 11.4 --- ---
230/1/50 15 6.3 15 5.9 --- ---
230/1/60 15 6.2 15 5.8 --- ---
KP0420 115/1/60 20 12.0 15 11.3
--- ---
KT0420
115/1/60 15 11.3 15 10.6 --- ---
230/1/50 15 6.2 15 5.8 --- ---
230/1/60 15 6.2 15 5.8 --- ---
KP0500 115/1/60 20 12.5 20 11.8
--- ---
KT0500
115/1/60 20 12.7 20 12.0 --- ---
230/1/50 15 6.3 15 5.9 --- ---
KP0700 230/1/60 15 6.6 15 6.3 --- ---
KT0700
230/1/60 15 8.5 15 8.2 --- ---
230/1/50 15 8.6 20 8.2 --- ---
KP01000 230/1/60 15 8.6 15 7.9 --- ---
KT1000
230/1/60 15 10.8 15 10.1 15 9.8
230/1/50 15 11.3 --- --- --- ---
KT1700
230/1/60 30 18.2 30 16.8 30 17.8
230/3/60 20 13.6 20 12.2 20 13.2
230/1/50 30 17.1 --- --- --- ---
Part Number: 000018481 10/25 23
Section 2 Installation
Water and Drain Connections
WATER CONNECTIONS
n
Warning
Connect to a potable water supply only.
Plumbing must conform to state, local and
national codes.
• Local water conditions may require
treatment of the water to inhibit scale
formation, filter sediment, and remove
chlorine odor and taste.
• All water and drains must conform to all
applicable codes of the authority having
jurisdiction. It is the responsibility of the
end user to satisfy all local codes.
• Connect ice making water inlet to
potable water only.
• Install a water shut-off valve for potable
water and water cooled condenser lines.
• Install a water regulating valve if water
pressure exceeds the maximum valve
rating.
• Insulate water and drain lines to prevent
condensation.
• If you are installing a water filter system,
refer to the installation instructions
supplied with the filter system for ice
making water inlet connections.
• 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.)
,
Caution
Do not apply heat to water inlet valve or
water drain fittings. Heating will damage
the nonmetallic connector. Do not over
tighten fittings. Two turns after hand tight
is the maximum.
DRAIN CONNECTIONS
Follow these guidelines when installing
drain lines to prevent drain water from
flowing back into the ice machine and
storage bin:
• Drain lines must have a 1.5 inch drop
per 5 feet of run (2.5 cm per meter), and
must not create traps.
• The floor drain must be large enough to
accommodate drainage from all drains.
• Run separate bin and ice machine
drain lines. Insulate them to prevent
condensation.
• Vent the bin and ice machine drain
to the atmosphere. Do not vent the
condenser drain on water-cooled
models.
• Install a tee at the ice machine drain
outlet and install an 18.0” (46 cm) vent
above the drain line.
• Drain termination must have an air gap
that meets local code. Water Supply and
Drain Line Sizing/Connections
24 Part Number: 000018481 10/25
Installation Section 2
Water Supply and Drain Line Sizing/ Connections
Location
Water
Temperature
Water Pressure Ice Machine Fitting
Tubing Size Up to Ice
Machine Fitting
Ice Making
Water Inlet
35°F (2°C)
Min.
90°F (32°C)
Max.
20 psi (140 kPa)
Min.
80 psi (552 kPa)
Max.
3/8" (.95 cm) Female
Pipe Thread
3/8" (.95 cm) min.
inside diameter
Ice Making
Water Drain
––
1/2" (1.27 cm) Female
Pipe Thread
1/2" (1.27 cm) min.
inside diameter
Condenser
Water Inlet
90°F (32°C)
Max.
Standard
20 psi (140 kPa)
Min.
275 psi (1896
kPa) Max.
High Pressure
Option
20 psi (140 kPa)
Min.
350 psi (2410
kPa) Max.
3/8" Female Pipe Thread
Condenser
Water Drain
––
1/2" (1.27 cm) Female
Pipe Thread
1/2" (1.27 cm) min.
inside diameter
Bin Drain ––
3/4" (1.91 cm) Female
Pipe Thread
3/4" (1.91 cm) min.
inside diameter
Large
Capacity Bin
Drain
––
1" (2.54 cm) Male
Pipe Thread
1" (2.54 cm) min.
inside diameter
Min. = Minimum, Max. = Maximum
Part Number: 000018481 10/25 25
Section 2 Installation
CONNECTION LOCATIONS
1
2
3
4
5 6
7
8
9
10
Item Description
1 Electrical Entrance
2
Vent Tube - Minimum Height
18" (46 cm)
3 Potable Water Inlet - 3/8" FPT
4 Potable Water Drain - 1/2" FPT
5
Condenser Water Drain - 1/2" FPT
Water-cooled Models Only
Install Separate Drain When Used
6
Condenser Water Inlet - 3/8” FPT
Water-cooled Models Only
7 Base Drain - 1/2" CPVC Socket
8
Bin Drain - See page 23 for
fitting sizes
9 Floor Drain - Open and Trapped
10
Do Not Trap Drain Line -
Leave Air Gap Between Drain Line
and Floor Drain
AUXILIARY BASE DRAIN INSTALLATION
An auxiliary drain is located in the ice
machine base to remove moisture in high
humidity areas.
1. View the back of the ice machine base
on the compressor side and locate and
remove the cap plug.
2. Route tubing to an open site drain:
• Use 1/2 inch CPVC tubing.
• Apply a bead of silicone around the
exterior of the ice machine tubing
and insert into ice machine base. The
silicone will secure the tubing and
provide a watertight seal.
• Provide support for tubing.
COOLING TOWER APPLICATIONS
ΈWATERͳCOOLED MODELSΉ
A water cooling tower installation does not
require modification of the ice machine.
• Water pressure at the condenser cannot
exceed 276 psig (1900 kPa).
• Water entering the condenser must not
exceed 90°F (32°C).
• Water flow through the condenser
must not exceed 5 gallons (19 liters) per
minute.
• Allow for a pressure drop of 7 psi
(50 kPa) between the condenser water
inlet and the outlet of the ice machine.
• Water exiting the condenser must
not exceed 110°F (43°C).Remote Ice
Machines
26 Part Number: 000018481 10/25
Installation Section 2
Remote Systems
REFRIGERANT CHARGE
Each remote ice machine ships from
the factory with a refrigerant charge
appropriate for installation with line sets of
up to 50' (15 m). The serial tag on the ice
machine indicates the refrigerant charge.
Additional refrigerant may be required for
installations using line sets between 51'
and 100' (15.5-30 m) long. If additional
refrigerant is required, refer to the chart
below for the correct amount to be added.
Ice Machine
Refrigerant to be
added for 51'-100'
Line Sets
KT1000 2 lbs (907g)
KT1700 2 lbs (907g)
Important
EPA CERTIFIED TECHNICIANS
If remote line set length is between 51'
and 100' (15.5 and 30 m), add additional
refrigerant to the nameplate charge. Refer
to the table below for the model being
worked on.
Tubing length: ____________________
Refrigerant added to nameplate: _____
New total refrigerant charge: ________
n
Warning
Potential Personal Injury Situation
The ice machine contains refrigerant
charge. Installation of the line sets must be
performed by a properly trained and EPA
certified refrigeration technician aware of
the dangers of dealing with refrigerant
charged equipment. "
GENERAL
Condensers must be mounted horizontally
with the fan motor on top with nothing
obstructing it. There must be at least a 16".
(41 cm) clearance from the bottom for air
intake. The front coupling panel and one
other panel (back or side) must also be
unobstructed.
Remote condenser installations consist of
vertical and horizontal line sets between
the ice machine and the condenser. When
combined, they must fit within approved
specifications. The following guidelines,
drawings and calculation methods must
be followed to verify a proper remote
condenser installation.
Notice
The compressor warranty (including the
labor replacement warranty) will not apply
if the remote ice machine is not installed
according to specifications.
The warranty also will not apply if the
refrigeration system is modified with a
condenser, heat reclaim device, or other
parts or assemblies not manufactured by
us unless we specifically approved the
component in writing.
DOWNWARD
HORIZONTAL
SPIRAL
Routing Line Sets
Part Number: 000018481 10/25 27
Section 2 Installation
WIRING
Interconnecting line voltage wiring is used
to energize and de-energize the condenser
fan motor.
• The remote condenser voltage matches
the ice machine head section voltage.
Interconnecting Wire Connections
Ice Machine Head
Section
Remote Condenser
F1 L1
F2 L2
GUIDELINES FOR ROUTING LINE SETS
First, cut a 2.5" (6.35 cm) circular hole in
the wall or roof for tubing routing. The
line set end with the 90° bend will connect
to the ice machine. The straight end will
connect to the remote condenser.
Follow these guidelines when routing
the refrigerant lines. This will help
ensure proper performance and service
accessibility.
1. Optional - Make the service loop in
the line sets (as shown in Routing Line
Sets graphic). This permits easy access
to the ice machine for cleaning and
service. Do not use hard rigid copper
at this location.
2. Required - Do not form traps in the
refrigeration lines (except the service
loop). Refrigerant oil must be free to
drain toward the ice machine or the
condenser. Route excess tubing in a
supported downward horizontal spiral
(as shown below). Do not coil tubing
vertically.
3. Required - Keep outdoor refrigerant
line runs as short as possible.
CALCULATING REMOTE CONDENSER
INSTALLATION DISTANCES
Line Set Length
The maximum length is 100' (30 m).
The ice machine compressor must have the
proper oil return. The receiver is designed
to hold a charge sufficient to operate the
ice machine in ambient temperatures
between -20°F (-29°C) and 120°F (49°C),
with line set lengths of up to 100' (30 m).
Line Set Rise/Drop
The maximum rise is 35' (10.7 m).
The maximum drop is 15' (4.5 m).
Notice
If a line set has a rise followed by a drop,
another rise cannot be made. Likewise,
if a line set has a drop followed by a rise,
another drop cannot be made.
Calculated Line Set Distance
The maximum calculated distance is 150'
(45 m).
Line set rises, drops, horizontal runs (or
combinations of these) in excess of the
stated maximums will exceed compressor
start-up and design limits. This will cause
poor oil return to the compressor.
28 Part Number: 000018481 10/25
Installation Section 2
Make the following calculations to
make sure the line set layout is within
specifications.
1. Insert the measured rise into the
formula below. Multiply by 1.7 to get
the calculated rise.
(Example: A condenser located 10
feet above the ice machine has a
calculated rise of 17 feet.)
2. Insert the measured drop into the
formula below. Multiply by 6.6 to get
the calculated drop.
(Example. A condenser located 10
feet below the ice machine has a
calculated drop of 66 feet.)
Maximum Line Set Distance Formula
3. Insert the measured horizontal
distance into the formula below. No
calculation is necessary.
4. Add together the calculated rise,
calculated drop, and horizontal
distance to get the total calculated
distance. If this total exceeds 150'
(45 m), move the condenser to a new
location and perform the calculations
again.
Step 1. Measured Rise (35' [10.7 m] Maximum) x 1.7 = Calculated Rise
Step 2. Measured Drop (15' [4.5 m] Maximum) x 6.6 = Calculated Drop
Step 3. Measured Horizontal Distance (100' [30 m] Maximum) = Horizontal Distance
Step 4. Total Calculated Distance 150' (45 m) _______ Total Calculated Distance
H
R
H
D
H
D
R
Combination of a Rise (R)
and a Horizontal (H) Run
Combination of a Drop (D)
and a Horizontal (H) Run
Combination of a Rise (R),
a Drop (D) and a
Horizontal (H) Run
Part Number: 000018481 10/25 29
Section 2 Installation
Route the Line Set
• Route the line set to avoid traps and
kinks.
• Minimize the amount of line set exposed
on the roof.
Connect the line Set
In most cases, by routing the line set
properly, shortening will not be necessary.
When shortening or lengthening is required,
do so before connecting the line set to the
ice machine or the remote condenser. This
prevents the loss of refrigerant in the ice
machine or condenser.
The quick connect fittings on the line sets
are equipped with access valves. Use these
valves to recover any vapor charge from the
line set. When lengthening or shortening
lines, follow good refrigeration practices,
purge with nitrogen and insulate all tubing.
Do not change the tube sizes. Evacuate the
lines and place about 145 grams (5 oz) of
vapor refrigerant charge in each line.
1. Remove the dust caps from the line
set, condenser and ice machine.
2. Apply refrigeration oil to the threads
on the quick-disconnect couplers
before connecting them to the
condenser.
3. Carefully thread the female fitting to
the condenser or ice machine by hand,
then tighten the couplings with a
wrench until they bottom out.
4. Turn an additional quarter turn to
ensure proper brass-to-brass seating.
Torque to the following specifications:
Liquid Line Discharge Line
13.5-16.2 N•m 47.5-61.0 N•m
5. Check all fittings and valve caps for
leaks and reinstall and tighten caps.
30 Part Number: 000018481 10/25
Installation Section 2
Installation Check List
Is the Ice Machine level?
Have all of the electrical and water
connections been made?
Has the supply voltage been tested
and checked against the rating on the
nameplate?
Is there proper clearance around the ice
machine for air circulation?
Is the ice machine grounded and
polarity correct?
Has the ice machine been installed
where ambient temperatures will
remain in the range of 35° - 110°F (1.6° -
43.3°C)?
Has the ice machine been installed
where the incoming water temperature
will remain in the range of 35° - 90°F
(1.6° - 32.2°C)?
Is there a separate drain for the potable
water, bin and water-cooled condenser?
Are the ice machine and bin drains
vented?
Are all refrigerant lines free from
contact with other components?
Are all electrical leads free from contact
with refrigeration lines and moving
equipment?
Has the owner/operator been instructed
regarding maintenance and the use of
our Cleaner and Sanitizer?
Has the owner/operator completed the
warranty registration card?
Has the ice machine and bin been
sanitized?
Is the ice thickness set correctly? (Refer
to Operational Checks to check/set the
correct ice bridge thickness).
ADDITIONAL CHECKS FOR REMOTE
MODELS
Does the remote condenser fan operate
properly after start-up?
Has the remote condenser been located
where ambient temperatures will
remain in the range of -20° - 120°F (-29
- 49°C).
Is the line set routed properly?
Are both refrigeration lines to remote
condenser run so they do not lay in
water and are properly insulated?
Part Number: 000018481 10/25 31
Section 2 Installation
Before Starting the Ice Machine
All ice machines are factory-operated
and adjusted before shipment. Normally,
new installations do not require any
adjustment. Starting the ice machine and
completing the Operational Check-s are the
responsibilities of the owner/operator.
Step 1 Refer to “Location of Ice Machine”
on page 15 and sanitize the ice machine
and bin before placing in operation.
Step 2 Refer to “Ice Making Sequence of
Operation” on page 33 for operational
details.
n
Warning
Potential Personal Injury Situation
Do not operate equipment that has been
misused, abused, neglected, damaged,
or altered/modified from that of original
manufactured specifications.
Starting the Ice Machine
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.
MINIMUM/MAXIMUM SLAB WEIGHT
“Minimum/Maximum Slab Weights” on
page 35.
Warranty
For warranty information visit:
www.manitowocice.com/Service/Warranty
• Warranty Coverage Information
• Warranty Registration
• Warranty Verification
Warranty coverage begins the day the ice
machine is installed.
WARRANTY REGISTRATION
Completing the warranty registration
process is a quick and easy way to protect
your investment.
Scan the QR code on the included tag with
your smart device or enter the link in a
web browser to complete your warranty
registration.
WWW.MANITOWOCICE.COM/SERVICE/
WARRANTY#WARRANTYͳREGISTRATION
Registering your product ensures warranty
coverage and streamlines the process if any
warranty work is required.
To obtain a printed copy of warranty terms, please
contact Manitowoc Ice at 800-545-5720.
32 Part Number: 000018481 10/25
Installation Section 2
THIS PAGE INTENTIONALLY LEFT BLANK
Part Number: 000018481 10/25 33
Ice Making Sequence of Operation
NOTE: The toggle switch must be in the
ICE position and the water curtain must be
closed before the ice machine will start.
Water Purge Cycle
The ice machine purges any remaining
water from the water trough down the
drain and the refrigeration compressor
starts.
Freeze Cycle
Prechill - The refrigeration system chills
the evaporator before water flow over the
evaporator starts. The water inlet valve
energizes during the pre-chill and remains
on until the Ice Thickness Float Switch is
satisfied.
Freeze - Water flowing across the
evaporator freezes and builds ice on the
evaporator. After a sheet of ice has formed,
the Harvest Float Switch signals the control
board to start a harvest cycle.
Dump Cycle
Upon initial start-up or start-up after an
auto shut-off, water flows through the
water dump valve and down the drain. If
the water trough fails to drain after the
water dump valve has energized/
de-energized, a clean light will flash.
Harvest Cycle
Any remaining water is purged down the
drain (every fourth cycle) as refrigerant
gas warms the evaporator. When the
evaporator warms, the sheet of cubes
slides off the evaporator and into the
storage bin. If all cubes fall clear of the
water curtain, the ice machine starts
another freeze cycle.
Full Bin Cycle
If the water curtain is held open by ice
cubes, the ice machine shuts off and starts
a 3-minute delay period. When the water
curtain closes, the ice machine starts a
new cycle at the water purge, provided the
3-minute delay period has expired.
CONTROL BOARD TIMERS
The control board has the following non-
adjustable timers:
• The ice machine is locked into the freeze
cycle for 6 minutes before a harvest cycle
can be initiated.
• The maximum freeze time is 35
minutes, at which time the control
board automatically initiates a harvest
sequence.
• The maximum harvest time is 7 minutes.
The control board automatically initiates
a freeze sequence when these times are
exceeded.
Section 3
Operation
34 Part Number: 000018481 10/25
Operation Section 3
SERVICE LIMITS
Service limits are stored and indicated by
the control board. The number of cycles
required to stop the ice machine varies for
each service limit.
Service limits can be reset by pressing
the On/Off button and starting a new ice
making cycle.
A service limit is indicated by a flashing
Service Light on the control board.
• Service Limit 1 - If the freeze time
reaches 35 minutes, the control board
automatically initiates a harvest cycle.
If 6 consecutive 35-minute freeze cycles
occur, the ice machine stops.
• Service Limit 2 - If three consecutive
7 minute harvest cycles occur the SL#2
light on the control board will flash on/
off at 1 second intervals.
After 100 consecutive 7 minutes harvest
cycles the SL#2 light will be energized
continuously.
• Water Loss - If the water trough doesn’t
fill within 4 minutes of the freeze cycle,
the ice machine will stop for 30 minutes
then restart. If 100 consecutive failures
occur the ice machine locks out and
the SL#1 & SL#2 lights flash on/off at 1
second intervals.
Operational Checks
GENERAL
All ice machines are factory-operated and
adjusted before shipment. Normally, new
installations do not require any adjustment.
To ensure proper operation, always follow
the Operational Checks:
• when starting the ice machine for the
first time
• after a prolonged out-of-service period
• after cleaning and sanitizing
NOTE: Routine adjustments and
maintenance procedures are not covered
by the warranty.
Part Number: 000018481 10/25 35
Section 3 Operation
MINIMUM/MAXIMUM SLAB WEIGHTS
Adjust ice thickness to meet chart
specifications.
Model
Minimum Ice
Weight Per
Cycle
Maximum Ice
Weight Per
Cycle
KP0300
KT0300
3.4 lbs
1542 g
3.9 lbs
1769 g
KP0400
KT0400
3.4 lbs
1542 g
3.9 lbs
1769 g
KP0420
KT0420
3.4 lbs
1542 g
3.9 lbs
1769 g
KP0500
KT0500
4.125 lbs
1871 g
4.75 lbs
2154 g
KP0700
KT0700
4.125 lbs
1871 g
4.75 lbs
2154 g
KP1000
KT1000
7.25 lbs
3288 g
7.75 lbs
3515 g
KT1700
13.2 lbs
5987 g
14.8 lbs
6713 g
ICE THICKNESS CHECK
After a harvest cycle, inspect the ice cubes
in the ice storage bin. The ice thickness
float switch is factory-set to maintain the
ice bridge thickness at 1/8" (3 mm).
NOTE: Make sure the water curtain is
in place when performing this check. It
prevents water from splashing out of the
water trough.
1. Inspect the bridge connecting the
cubes. It should be about 1/8" (3 mm)
thick.
2. If adjustment is necessary make the
following adjustment as you face the
machine.
NOTE: The float can be adjusted with a 3/4"
wrench while the water trough is in place.
• Turn the ice thickness float switch to the
right to increase bridge thickness
• Turn the ice thickness float switch to the
left to decrease bridge thickness.
• Test run two cycles to verify bridge
thickness.
Ice Thickness Float
Switch Adjustment
Operation Section 3
36 Part Number: 000018481 10/25
THIS PAGE INTENTIONALLY LEFT BLANK
Part Number: 000018481 10/25 37
Section 4
Maintenance
De-scaling and Sanitizing
GENERAL
You are responsible for maintaining
the ice machine in accordance with the
instructions in this manual. Maintenance
procedures are not covered by the
warranty.
Sanitizing for Exterior, Remedial, and
Detailed procedures can be performed
independently and more frequently than
de-scaling when needed.
De-scale and sanitize the ice machine every
six months for efficient operation. If the ice
machine requires more frequent de-scaling
and sanitizing, consult a qualified service
company to test the water quality and
recommend appropriate water treatment.
An extremely dirty ice machine must be
taken apart for de-scaling and sanitizing.
Manitowoc Ice Machine De-scaler and
Sanitizer are the only products approved
for use in Manitowoc ice machines.
Using non Manitowoc de-scalers, sanitizers,
cleaners or solutions may result in bodily
harm and/or cause damage to the ice
machine that is not covered under the
warranty.
Ice Machine Inspection
Check all water fittings and lines for leaks.
Also, confirm 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.
Wipe surfaces with a damp cloth rinsed
in water to remove dust and dirt from
the outside of the ice machine. If a greasy
residue persists, use a damp cloth rinsed in
a mild dish soap and water solution. Wipe
dry with a clean, soft cloth.
Products containing abrasives will damage
the coating and scratch the panels.
• Never use steel wool or abrasive pads for
cleaning.
• Never use chlorinated, citrus based or
abrasive cleaners on exterior panels and
plastic trim pieces.
Remedial De-scaling Procedure
• This procedure de-scales all components
in the water flow path, and is used
between the bi-yearly detailed de-scaling
and sanitizing procedure.
Detailed De-scaling/Sanitizing Procedure
This procedure must be performed a
minimum of once every six months.
• The ice machine and bin must be
disassembled de-scaled and sanitized.
• All ice produced during the de-scaling
and sanitizing procedures must be
discarded.
Caution
Do not mix De-scaler and Sanitizer
solutions together. It is a violation of
Federal law to use these solutions in a
manner inconsistent with their labeling.
38 Part Number: 000018481 10/25
Maintenance Section 4
Warning
Wear rubber gloves and safety goggles
(and/or face shield) when handling Ice
Machine De-scaler or Sanitizer.
De-scaler and Sanitizer Solutions
Caution
Use only Manitowoc approved Ice Machine
De-scaler and Sanitizer for this application.
Do not use de-scaler or sanitizer quantities
that exceed the amounts listed in this
manual. 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.
Liquid De-scaler Liquid Sanitizer
16 oz - 9405463 16 oz - 9405653
1 gal - 9405803 1 gal - 9405813
NOTE: Powdered de-scaler and rinse are
available. Please follow the instructions
included with the packets for number of
packets needed for your model
Step 1 Remove the front door to access
the evaporator compartment. Ice must
not be on the evaporator during the clean/
sanitize cycle. 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 OFF and allow the ice to
melt off the evaporator(s).
Notice
Never use anything to force ice from the
evaporator. Damage may result.
Step 2 Remove all ice from the bin/
dispenser.
Step 3 Place the toggle switch in the
CLEAN position. Water will flow through
the water dump valve and down the drain.
Wait until the water trough refills, then add
the proper amount of ice machine descaler.
Model
Amount of
De-scaler 9405463
K0300 K0400 K0420
K0500 K0700 K1000
5 ounces (150 ml)
K1700 9 ounces (265 ml)
Step 4 Wait until the clean cycle is
complete (approximately 30 minutes). Then
disconnect power to the ice machine (and
dispenser when used).
Warning
Disconnect the electric power to the ice
machine at the electric service switch box.
Step 5 Remove parts for descaling.
Please refer to parts removal and continue
with step 6 when the parts have been
removed - Refer to page 40.
Step 6 Mix a solution of descaler and
lukewarm water. Depending upon the
amount of mineral buildup, a larger
quantity of solution may be required. Use
the ratio in the table below to mix enough
solution to thoroughly clean all parts.
Solution
Type
Water Mixed with
Liquid
De-scaler
9405463
1 gal
(4 L)
16 oz (500 ml)
descaler
Part Number: 000018481 10/25 39
Section 4 Maintenance
Step 7 Use half of the descaler/water
mixture to clean all components. The
descaler solution will foam when it contacts
lime scale and mineral deposits; once
the foaming stops use a soft-bristle nylon
brush, sponge or cloth (NOT a wire brush)
to carefully clean the parts. Soak parts for
5 minutes (15-20 minutes when heavily
scaled). Rinse all components with clean
water.
Step 8 While components are soaking,
use half of the descaler/water solution
to clean all foodzone surfaces of the ice
machine and bin (or dispenser). Use a nylon
brush or cloth to thoroughly clean the
following ice machine areas:
• Evaporator plastic parts – including top,
bottom and sides
• Bin bottom, sides and top
Rinse all areas thoroughly with clean water.
SANITIZING PROCEDURE
Step 9 Mix a solution of sanitizer and
lukewarm water.
Solution
Type
Water Mixed with
Liquid
Sanitizer
9405463
3 gal.
(12 L)
2 oz (60 ml)
sanitizer
Step 10 Use half of the sanitizer/
water solution to sanitize all removed
components. Use a spray bottle to liberally
apply the solution to all surfaces of the
removed parts or soak the removed parts
in the sanitizer/water solution. Do not rinse
parts after sanitizing.
Step 11 Use half of the sanitizer/water
solution to sanitize all foodzone surfaces
of the ice machine and bin (or dispenser).
Use a spray bottle to liberally apply the
solution. When sanitizing, pay particular
attention to the following areas:
• Evaporator plastic parts - including top,
bottom and sides
• Ice machine base (top of bin) and area
above the water trough
• Bin sides and bottom
Do not rinse the sanitized areas.
Step 12 Replace all removed components.
Step 13 Wait 20 minutes.
Step 14 Reapply power to the ice machine
and place the toggle switch in the CLEAN
position.
Step 15 Wait until the water trough refills,
then add the proper amount of Manitowoc
Ice Machine Sanitizer to the water trough.
Model
Amount of Liquid
Sanitizer 9405653
K0300 K0400 K0420
K0500 K0700 K1000
3 ounces (90 ml)
K1700 6 ounces (180 ml)
Step 16 After the sanitize cycle is
complete (approximately 24 minutes) move
the toggle switch to the ICE position to start
ice making.
Notice
Electrical connector must never be
exposed to any liquids.
40 Part Number: 000018481 10/25
Maintenance Section 4
Parts Removal for Descaling/
Sanitizing
Single Evaporator Ice Machines
A. Remove the water curtain
• Gently flex the curtain in the center and
remove it from the right side.
• Slide the left pin out.
B. Remove the water trough and
water diverter from the bottom of the
evaporator.
• Depress tabs on right and left side of the
water trough.
• Allow front of water trough to drop as
you pull forward to disengage the rear
pins.
• Loosen thumbscrew on left side of
waterdiverter tray.
C. Remove the ice thickness and harvest
float switches
• Pull the float switch straight down to
disengage.
• Lower the float switch until the wiring
connector is visible.
• Disconnect the wire lead from the float
switch.
• Remove the float switch from the ice
machine.
D. Remove the water distribution tube
NOTE: Distribution tube thumbscrews
are retained to prevent loss. Loosen
thumbscrews but do not pull thumbscrews
out of distribution tube.
• Loosen the two outer screws (do not
remove screws completely they are
retained to prevent loss) and pull
forward on the distribution tube to
release from slip joint.
• Disassemble distribution tube
by loosening the two (2) middle
thumbscrews and dividing the
distribution tube into two pieces.
• Proceed to page 34 Step 6.
A
B
C
D
Part Number: 000018481 10/25 41
Section 4 Maintenance
Remedial De-scaling Procedure
This procedure de-scales all components
in the water flow path, and is used to
de-scale the ice machine between the
bi-yearly detailed de-scaling and sanitizing
procedure.
Ice machine de-scaler is used to remove
lime scale and mineral deposits. Ice
machine sanitizer disinfects and removes
algae and slime.
NOTE: Although not required and
dependent on your installation, removing
the ice machine top cover may allow easier
access.
Step 1 Ice must not be on the evaporator
during the clean/sanitize cycle. Follow one
of the methods below:
• Move the toggle switch to the OFF
position at the end of a harvest cycle
after ice falls from the evaporator(s).
• Move the toggle switch to the OFF
position and allow the ice to melt.
Notice
Never use anything to force ice from the
evaporator. Damage may result.
Step 2 Open the front door and move
the toggle switch to the CLEAN position.
Wait until the water trough refills
(approximately 1 minute) and then add the
proper amount of Ice Machine Descaler to
the water trough.
Model Amount of
Descaler 9405463
K0300 K0400 K0420
K0500 K0700 K1000
5 oz
(150 ml)
K1700
9 oz
(265 ml)
Step 3 After 1 minute place the toggle
switch in the ICE position and close and
secure the front door. The ice machine will
automatically start ice making after the
Clean cycle is complete (approximately 24
minutes).
Door Removal
1. Use a Phillips screwdriver to loosen
the two screws securing the door.
Do not remove, they are retained to
prevent loss.
2. Tilt door forward and lift up to remove.
42 Part Number: 000018481 10/25
Maintenance Section 4
Cleaning the Air Filter and Condenser
The washable filter on self-contained ice
machines is designed to catch dust, dirt, lint
and grease. Clean the filter once a month
with mild soap and water.
A dirty condenser restricts airflow, resulting
in excessively high operating temperatures.
This reduces ice production and shortens
component life.
Warning
Disconnect electric power to the ice
machine head section and the remote
condensing unit at the electric service
switches before cleaning the condenser.
• Clean the condenser at least every six
months.
• Shine a flashlight through the condenser
to check for dirt between the fins.
• Blow compressed air or rinse with water
from the inside out (opposite direction
of airflow).
• If dirt still remains, call a service agent to
clean the condenser.
Warning
The condenser fins are sharp. Use care
when cleaning them.
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.
Notice
If water is allowed to remain in the ice
machine in freezing temperatures, severe
damage to some components could result.
Damage of this nature is not covered by
the warranty.
AIRCOOLED MODELS
1. Turn off the ice machine by pressing
the On/Off button.
2. Turn off the water supply.
3. Remove the water from the water
trough.
4. Disconnect and drain the incoming
ice-making water line at the rear of the
ice machine.
5. Energize the ice machine and wait
one minute for the water inlet valve
to open - or - Energize all relays in the
touchscreen service menu.
6. Blow compressed air in both the
incoming water and the drain openings
in the rear of the ice machine until no
more water comes out of the water
inlet lines or the drain.
7. Disconnect the electric power at the
circuit breaker or the electric service
switch.
8. Make sure water is not trapped in
any of the water lines, drain lines,
distribution tubes, etc.
Part Number: 000018481 10/25 43
Section 4 Maintenance
WATERCOOLED MODELS ONLY
1. Perform steps 1-6 under “Air-Cooled
Ice Machines”.
2. Disconnect the incoming water and
drain line from the water-cooled
condenser.
3. Start the ice making cycle by pressing
the On/Off button and wait for the
freeze cycle. The increasing refrigerant
pressure will open the water
regulating valve.
4. Blow compressed air through the
condenser until no water remains.
5. Turn off ice machine by pressing the
On/Off button and then disconnecting
power to the ice machine.
6. Replace all panels.
7. Perform a lock out tag out procedure.
44 Part Number: 000018481 10/25
Maintenance Section 4
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Part Number: 000018481 10/25 45
Before Calling for Service Checklist
If a problem arises during operation of your ice machine, follow the checklist below before
calling service. Routine adjustments and maintenance procedures are not covered by the
warranty.
Problem Possible Cause To Correct
Ice machine does not
operate.
No electrical power to the ice
machine.
Replace the fuse/reset the
breaker/turn on the main
switch/plug power cord into
receptacle.
Ice machine needs to be
turned on.
Place the toggle switch in
the ICE position to start ice
making.
Curtain in open position. Curtain must be in the closed
position and capable of
swinging freely.
Ice machine stops, and can
be restarted by turning the
ice machine OFF and then
ON.
Safety limit feature stopping
the ice machine.
Refer to “Service Limit
Feature” on page 47.
Ice sheet is thick Water trough level is too high. Adjust ice thickness float.
Power button was turned off/
on during freeze cycle and ice
remained on evaporator.
Allow ice to thaw and release
from evaporator, then restart.
Ice damper was opened then
closed in the harvest cycle
before the ice released.
Allow ice to thaw and release
from evaporator, then restart.
Ice machine does not
release ice or is slow to
harvest.
Ice machine is dirty. Clean and sanitize the ice
machine.
Ice machine is not level. Level the ice machine.
Low air temperature around
ice machine (air-cooled
models).
Air temperature must be at
least 40°F (4°C).
Water regulating valve leaks in
harvest mode (water-cooled
models).
Replace water regulating
valve.
Section 5
Troubleshooting
46 Part Number: 000018481 10/25
Troubleshooting Section 5
Problem Possible Cause To Correct
Ice machine does not cycle
into harvest mode.
The six-minute freeze time
lock-in has not expired yet.
Wait for freeze lock-in to
expire.
Ice thickness float switch is
dirty.
Clean and sanitize the ice
machine.
Ice thickness float switch wire
is disconnected.
Connect the wire.
Ice thickness float switch is
out of adjustment.
Adjust the ice thickness float
switch.
Uneven ice fill (thin at top of
evaporator).
See “Shallow or Incomplete
Cubes”.
Ice quality is poor
(soft or not clear).
Poor incoming water quality. Contact a qualified service
company to test the quality
of the incoming water and
make appropriate filter
recommendations.
Water filtration is poor. Replace the filter.
Ice machine is dirty. Clean and sanitize the ice
machine.
Water softener is working
improperly (if applicable).
Repair the water softener.
Ice machine produces
shallow or incomplete
cubes, or the ice fill pattern
on the evaporator is
incomplete.
Ice thickness float switch is
out of adjustment.
Adjust the ice thickness float
switch.
Water trough level is too high
or too low.
Check the water level and
adjust if required.
Water filtration is poor. Replace the filter.
Hot incoming water. Connect the ice machine to a
cold water supply.
Incorrect incoming water
pressure.
Water pressure must be 20-80
psi (137.9 - 551.5 kPa).
Ice machine is not level. Level the ice machine.
Part Number: 000018481 10/25 47
Section 5 Troubleshooting
Problem Possible Cause To Correct
Low ice capacity. The condenser is dirty. Clean the condenser.
High air temperature around
ice machine (air-cooled
models).
Air temperature must not
exceed 110°F (43°C).
Inadequate clearance around
the ice machine.
Provide adequate clearance.
Objects stacked around ice
machine, blocking airflow
to condenser (air-cooled
models).
Remove items blocking
airflow.
Hot incoming water. Connect the ice machine to a
cold water supply.
Incorrect incoming water
pressure. Water pressure
is too low or water filter is
restricted.
Water pressure must be
20-80 psi (137.9 - 551.5 kPa).
Refer to Section 2 for water
requirements. Replace water
filter.
Service Limit Feature
In addition to the standard safety controls,
such as the high pressure cutout, your
ice machine features built-in safety
limits which will stop the ice machine if
conditions arise which could cause a major
component failure.
Refer to Service Limits Section 3 for more
information.
Before calling for service, re-start the ice
machine using the following procedure:
1. Move the toggle switch to OFF, then
the ICE position,
A. If the service limit feature has
stopped the ice machine, it will
restart after a short delay. Proceed
to step 2.
B. If the ice machine does not
restart, see “Ice machine does not
operate” on page 45.
2. Allow the ice machine to run to
determine if the condition repeats.
A. If the ice machine stops again, the
condition has repeated. Call for
service.
B. If the ice machine continues to
run, the condition has corrected
itself. Allow the ice machine to
continue running.
Troubleshooting Section 5
48 Part Number: 000018481 10/25
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KOOLAIRE ICE MACHINE DIVISION
2110 SOUTH 26TH STREET, MANITOWOC, WI 54220
8005455720
WWW.KOOLA I R E . C O M
©2025 Manitowoc Ice except where explicitly stated otherwise. All rights reserved.
Part Number: 000018481 10/25
