Manitowoc CNF0201A-L, CNF0202A, CNF0201A, CNF0202A-L Owners Manual

Nugget Ice Machines

CNF201 & CNF202 Models

Installation, Operation and Maintenance Manual

Original Document

Part Number: 000015202 Rev 00 12/17

Caution

,

Read this instruction before operating this equipment.

Safety Notices

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.

Warning

n

Indicates a hazardous situation that, if not avoided, could
result in death or serious injury.

Warning

n

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.

• 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.

• Connect to a potable water supply only.

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

Warning

n

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.

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.

DANGER

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.

Warning

n

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.

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 (electric, water)
according to approved practices during maintenance or
servicing.

• 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.

• 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.

Safety Notices

Section 1
General Information

Section 2
Installation

Table of Contents

Safety Notices ................................................................................................................... 3

Definitions ....................................................................................................................... 3

Model Numbers ................................................................................................................ 7

Accessories ........................................................................................................................ 7

Manitowoc Cleaner and Sanitizer ...................................................................................7

Legs ................................................................................................................................. 7

Touchless Sensing Option ................................................................................................ 7

Location of Ice Machine ..................................................................................................... 9

Ice Machine Clearance Requirements ................................................................................ 9

Sealing to Countertop or Stand .......................................................................................9

Electrical Service ............................................................................................................. 10

Voltage ..........................................................................................................................10

Fuse/Circuit Breaker ......................................................................................................10

Total Circuit Ampacity ...................................................................................................10

Electrical Specifications ................................................................................................... 10

Water Supply and Drains ................................................................................................. 10

Potable Water Supply .................................................................................................... 10

Potable Water Inlet Lines .............................................................................................. 10

Drain Connections ......................................................................................................... 10

Water Supply & Drain Line Sizing Connections ............................................................. 11

Before Starting the Ice Machine ...................................................................................... 12

Installation Checklist .....................................................................................................12

Part Number: 000015202 Rev 00 12/17 5

Section 3
Operation

Section 4
Maintenance

Section 5
Troubleshooting

Table of Contents (continued)

Sequence of Operation .................................................................................................... 13

15 Minute Time Delay ................................................................................................... 13

Prior to Start-up ............................................................................................................13

Initial Start-up ...............................................................................................................13

Freeze Cycle................................................................................................................... 13

Automatic Shutoff ......................................................................................................... 13

Restart After Automatic Shutoff .................................................................................... 13

Operational Checks ......................................................................................................... 14

General .......................................................................................................................... 14

Operation ...................................................................................................................... 14

Cleaning and Sanitizing .................................................................................................... 15

General .......................................................................................................................... 15

Exterior Cleaning ........................................................................................................... 15

Procedures ....................................................................................................................15

Preventative Maintenance Cleaning Procedure ............................................................ 16

Procedure to Clean Heavily Scaled Flake/Nugget Ice Machines ...................................17

Cleaning Procedure ....................................................................................................... 17

Sanitizing Procedure .....................................................................................................18

Component Disassembly for Cleaning/Sanitizing ............................................................. 19

Cleaning the Condenser ................................................................................................... 22

Removal from Service/Winterization ............................................................................... 23

General .......................................................................................................................... 23

Checklist .......................................................................................................................... 25

6 Part Number: 000015202 Rev 00 12/17

Section 1

General Information

Model Numbers

This manual covers the following models:

Lever Activated Touchless Sensor Activated

CNF201A-161L
CNF201A-251L

CNF202A-161L
CNF202A-251L

CNF201A-161
CNF201A-251
CNF0201-261
CNF202A-161
CNF202A-251
CNF0202-261

Accessories

MANITOWOC CLEANER AND SANITIZER

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

Cleaner Part Number Sanitizer Part Number

16 oz. (473 ml) 000000084

LEGS

Optional four inch adjustable legs are available.

TOUCHLESS SENSING OPTION

Touchless sensing can be ordered installed on the ice
machine from the factory or a field conversion kit is available.
The field conversion kit includes a replacement front panel
and instructions for installation.

16 oz. (473 ml) 94-0565-3
1 Gallon (3.78 l) 94-0581-3

Part Number: 000015202 Rev 00 12/17 7

General Information Section 1

THIS PAGE INTENTIONALLY LEFT BLANK

8 Part Number: 000015202 Rev 00 12/17

Section 2

Installation

These instructions are provided to assist the qualified
installer. Check your local Yellow Pages for the name of
the nearest Manitowoc distributor, or call Manitowoc
Foodservice for information regarding start-up services.

Important

Failure to follow these installation guidelines may affect
warranty coverage.

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 free of airborne and other
contaminants.

• The air temperature must be at least 45°F (7°C), but must
not exceed 110°F (43°C).

• The water temperature must be at least 45°F (7°C), but
must not exceed 90°F (32°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 and allow the ice
machine to be level front to back and side to side.

• The location must allow enough clearance for water and
electrical connections in the rear of the ice machine. The
drain can be routed out the rear or bottom of dispenser.

• The location must not obstruct airflow through or around
the ice machine. Airflow is in the left side and out the
top. Refer to chart for clearance requirements.

These ice machines are intended for use in household and
similar applications such as:

• Staff kitchen areas in shops, offices and other work
environments.

• Clients in hotels, motels, farmhouses, bed and breakfast
and other residential type environments.

• Catering and similar non-retail applications.

Ice Machine Clearance Requirements

CNF201 CNF202

Top 24" (61 cm) 24" (61 cm)

Sides 8" (20 cm) 8" (20 cm)

Back* 5" (13 cm) 5" (13 cm)

* 5" (13 cm) is recommended for servicing the ice machine. Clearance can
be 0" when water and drain connections exit the bottom of the ice machine.

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. See “Removal from Service/Winterization”.

SEALING TO COUNTERTOP OR STAND

Ice machines installed without legs must be sealed to the
countertop or stand. This prevent liquids or debris from
infiltrating beneath the ice machine.

Caution

,

To avoid instability the ice machine must be installed in an
area capable of supporting the weight of the ice machine
and a full bin of ice.

Part Number: 000015202 Rev 00 12/17 9

Installation Section 2

Electrical Service

Warning

n

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).

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).

115/60/1 ice machines are factory pre-wired with a power
cord and 5-15P plug.

230/60/1 and 230/50/1 ice machines are factory prewired
with a power cord, no plug is supplied.

Warning

n

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.

Water Supply and Drains

POTABLE WATER SUPPLY

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

Warning

n

PERSONAL INJURY POTENTIAL

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

Important

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

POTABLE 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 Manitowoc
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.

Electrical Specifications

Ice Machine Voltage/Phase/Cycle

115/1/60 10.3

CNF201

CNF202

10 Part Number: 000015202 Rev 00 12/17

230/1/60
230/1/50
115/1/60 5.4
230/1/60
230/1/50

Air-Cooled

Total Circuit Amps

DRAIN CONNECTIONS

Follow these guidelines when installing drain lines:

• 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.

• Insulate drain lines to prevent condensation.

• Drains must have a union or other suitable means to
allow in-place disconnection from the ice machine when
servicing is required.

Section 2 Installation

WATER SUPPLY & DRAIN LINE SIZING CONNECTIONS

Caution

,

Plumbing must conform to state and local codes.

Location Water Temperature Water Pressure Ice Machine Fitting Tubing Size Up to Ice Machine Fitting

Ice Making Water

Inlet

Ice Machine Drain --- --- 1/2" Female Pipe Thread

45°F (6°C) Min.

90°F (32°C) Max.

20 psi (137.9 kPa) Min.
80 psi (551.5 kPa) Max.

3/8" Female Pipe Thread

3/8" (9.5 mm)

minimum inside diameter

3/4" (19 mm)

minimum inside diameter

ICE MAKING

WATER INLET

TUBING 3/8" MIN.

I.D. (9.5 mm)

DRAIN CONNECTION IS

INTERCHANGEABLE

DRAIN IS PREINSTALLED TO RUN OUT

THE BACK

MOVE DRAIN PLUG TO RUN DRAIN OUT

THE BOTTOM IF DESIRED

DRAIN

Typical Water Supply Drain Installation

Part Number: 000015202 Rev 00 12/17 11

Installation Section 2

Before Starting the Ice Machine

INSTALLATION CHECKLIST

√ Checklist Item

Is the ice machine level?
Have all of the internal packing been removed?
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?
Has the ice machine been installed where ambient
temperatures will remain in the range of 45° – 110°F
(7° – 43°C)?
Has the ice machine been installed where the incoming
water temperature will remain in the range of 45° – 90°F
(7° – 32°C)?
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 Manitowoc Cleaner and
Sanitizer?
Has the warranty registration card been sent to the
factory?
Has the ice machine and bin been sanitized?
Has this manual been given to the owner/operator?
Is the water reservoir approximately 2/3 full of water?
Has the toggle switch been placed in the ICE position?
(Switch is located under front panel ledge)

All Manitowoc 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.

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

Warning

n

Potential Personal Injury Situation

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

12 Part Number: 000015202 Rev 00 12/17

Section 3

Operation

Sequence of Operation

15 MINUTE TIME DELAY

The 15 minute delay must be expired before the gearmotor
or compressor will energize.

The delay period starts to time out upon application of
power or movement of the toggle switch from OFF to ICE.

The delay period starts when:

• The ice machine enters Automatic Shutoff

• Power is disconnected and reconnected

• The toggle switch is moved from OFF to ICE

This time delay period can not be overridden and will reset
to 15 minutes if any of the above conditions occur.

PRIOR TO START-UP

When the toggle switch is placed in the ICE position, the
following must occur in the listed order before ice making
will start.

• The ice chute damper must be in the closed or down
position.

• The 15 minute delay period must be expired. The delay
period starts upon application of power or toggle switch
movement from OFF to ICE.

• The water sensing switch must be closed (water reservoir
full of water and water sensing float in the up position).

FREEZE CYCLE

The float valve automatically maintains the water level in the
reservoir. The ice damper will open and close to verify ice
production. The ice machine will continue to make ice until
the ice damper is held open (up) as ice fills the bin.

AUTOMATIC SHUTOFF

When the ice damper is held open by ice, the gearmotor,
compressor and condenser fan de-energize. The fifteen
minute delay period starts to time out. The ice machine will
remain off until the 15 minute delay period expires and the
ice damper closes.

RESTART AFTER AUTOMATIC SHUTOFF

1. Less than 4 hours have passed since automatic
shut‑off.

With the water sensing switch closed (reservoir full of water),
the gear motor will energize at the end of the 15 minute time
delay. The compressor and condenser fan motor energize
5 seconds after the gearmotor.

2. More than 4 hours have passed since automatic

shutoff.

The dump valve energizes to drain the evaporator. After
30 seconds the dump valve de-energizes. When the reservoir
fills with water, the water sensing switch closes and the
gearmotor energizes. The compressor and condenser fan
motor energize 5 seconds after the gearmotor.

INITIAL START-UP

Applying power and/or moving the toggle switch from OFF
to ICE will start a 15 minute delay period. This delay period
can not be overridden. With the water sensing switch closed
(reservoir full of water) the gear motor will energize at
the end of the 15 minute time delay. The compressor and
condenser fan motor energize 5 seconds after the gearmotor.

Part Number: 000015202 Rev 00 12/17 13

Operation Section 3

Operational Checks

GENERAL

Manitowoc ice machines are factory-operated and adjusted
before shipment. Normally, a newly installed ice machine
does 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
outlined in this manual are not covered by the warranty.

Blue Light

The blue light on the dispensing spout is energized when the
toggle switch is in the ICE position and the ice machine is
operational. If the light is not energized the ice machine will
not make ice. Refer to Section 5 Troubleshooting if the ice
machine has power and the light will not energize.

Toggle Switch

The toggle switch must be placed in the ICE position to make
ice.

Water Reservoir

The water reservoir must be 2/3 full of water and the water
sensing float must be up (switch closed) before the ice
machine will start.

Ice Production

Allow the ice machine to produce ice for 15 minutes before
testing the dispense mechanism. This will ensure a sufficient
quantity of ice in the bin for dispensing.

OPERATION

1. Set Selector Switch (When Used)

Depress the button adjacent to the text.

• Select ICE for ice dispense only

• Select ICE/WATER for water and ice

• Select WATER for water only

2. Dispense

LEVER-ACTIVATED

Use glass or container to press dispenser arm backward.
Release the arm and the ice machine will stop dispensing.

TOUCHLESS CENTER-ACTIVATED

Place a glass or container underneath the dispensing spout
within 1" (2.5 cm) of the sensor. The ice machine will
automatically dispense. Remove the glass or container to
stop dispensing.

WATER

SENSING

FL OAT

14 Part Number: 000015202 Rev 00 12/17

Section 4

Maintenance

Cleaning and Sanitizing

GENERAL

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

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

Caution

,

Use only Manitowoc approved Ice Machine Cleaner
(part number 000000084) and Sanitizer (part number
94-0565-3). Do not mix Cleaner and Sanitizer solutions
together. It is a violation of Federal law to use these
solutions in a manner inconsistent with their labeling.
Read and understand all labels printed on bottles before
use.

Warning

n

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

EXTERIOR CLEANING

Weekly: remove grill from scrap ice tray and wipe splash
panel, scrap ice tray and grill with sanitizer and water
solution (refer to page 18). Pour excess solution in scrap
ice tray to clear drain.

TOUCHLESS SENSOR ONLY

Wipe sensor window with a soft cloth and mild detergent.
Rinse with clear water and dry with a clean soft cloth.

PROCEDURES

This Manitowoc ice machine has three separate cleaning
procedures.

Preventative Maintenance Cleaning Procedure

Perform this procedure as required for your water
conditions. Recommended monthly.

• Allows cleaning the ice machine without removing all of
the ice from the bin

• Removes mineral deposits from areas or surfaces that
are in direct contact with water during the freeze cycle
(reservoir, evaporator, auger, drain lines)

Cleaning/Sanitizing Procedure

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

• All ice must be removed from the bin

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

• The ice machine produces ice with the cleaner and
sanitizer solutions

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

Heavily Scaled Cleaning Procedure

Perform this procedure if you have some or all of these
symptoms.

• Grinding, popping or squealing noises from the
evaporator

• Grinding noise from gearbox

• Ice machine stops on Safety Shutdown

• Your water has a high concentration of minerals

• The ice machine has not been on a regular maintenance
schedule

Run a cleaning procedure as described above after this
procedure is complete.

NOTE: A Sanitizing Procedure must be performed after all
cleaning procedures have been completed.

Part Number: 000015202 Rev 00 12/17 15

Maintenance Section 4

PREVENTATIVE MAINTENANCE CLEANING PROCEDURE

Ice machine cleaner is used to remove lime scale or other mineral deposits. It is not used to remove algae or slime. Refer to
“Sanitizing Procedure” for removal of algae and slime. To initiate a cleaning cycle using Manitowoc’s Cleaning Technology use
the following procedure.

Step 1 To start a cleaning cycle, move the toggle switch to
the CLEAN position. Water will flow through the water dump
valve and down the drain.

Step 3 The ice machine will run a wash cycle, a series
of rinse cycles and then stop. This entire cycle lasts
approximately 30 minutes.

Step 2 Remove the top panel and translucent plastic ice
chute cover. Wait about one minute then add the proper
amount of Manitowoc Ice Machine Cleaner. Rinse the cleaner
from the top of the evaporator with 2 ounces (60 ml) of clear
water and re-install cover.

Model Amount of Cleaner

CNF201 CNF202 2 ounce (60 ml)

Caution

,

Use only Manitowoc approved Ice Machine Cleaner. 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.

Add Cleaner To Evaporator Here

NOTE: Periodic cleaning must be performed on adjacent
surface areas not contacted by the water distribution system.

NOTE: The ice machine may be set to start and finish a
cleaning procedure, and then automatically start ice making
again.

A. After cleaner is added, move the switch from CLEAN

to ICE position.

B. When the cleaning cycle is complete, ice making will

start automatically.

Changing toggle switch position during clean cycle:

1. Less than 60 seconds into Clean cycle - The Clean cycle
will end when the toggle switch is moved to the OFF
position.

2. More than 60 seconds into Clean cycle - The ice machine
will complete the Clean cycle. Toggle switch position
will determine the next cycle after the Clean cycle is
completed.

• CLEAN POSITION - The ice machine will wait for a change
in toggle switch position.

• OFF POSITION - The ice machine will wait for a change in
toggle switch position.

• ICE POSITION - The ice machine will start making ice
automatically.

Manitowoc recommends disassembling, cleaning and
sanitizing the ice machine and dispenser every six months.

16 Part Number: 000015202 Rev 00 12/17

Section 4 Maintenance

PROCEDURE TO CLEAN HEAVILY SCALED FLAKE/NUGGET
ICE MACHINES

Ice machines that are heavily scaled or have not been
cleaned on a regular basis will need to run this procedure.
Failure to do so may result in binding of the auger as the lime
scale releases from the auger and evaporator barrel.

Step 1 Remove panels and set the ICE/OFF/CLEAN toggle
switch to the OFF position.

Step 2 Remove all ice from the bin.

Step 3 Turn off the water supply to the ice machine.

Step 4 Place ICE/OFF/CLEAN toggle switch in the CLEAN

position. The dump valve will open and drain the water from
the evaporator and reservoir.

Step 5 Wait approximately 30 seconds (or until the
evaporator is drained) and place the toggle switch in the OFF
position.

Step 6 Refer to chart and add the correct amount of
cleaner for your model ice machine.

Model Amount of Cleaner

CNF201 CNF202 12 ounce (355 ml)

Step 7 Turn on the water supply to the ice machine.

Important

Leave the cleaner/water solution in the evaporator for a
minimum of 4 hours.

CLEANING PROCEDURE

Ice machines that are heavily scaled or have not been
cleaned on a regular basis will need to run the Heavily Scaled
Cleaning Procedure before this one. Failure to do so may
result in binding of the auger as the lime scale releases from
the auger and evaporator barrel.

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

Step 1 Remove panels and set the ICE/OFF/CLEAN toggle
switch to the OFF position.

Step 2 Turn off the water supply to the ice machine.

Step 3 Remove all ice from the bin.

Step 4 Place ICE/OFF/CLEAN toggle switch in the CLEAN

position. The dump valve will open and drain the water from
the evaporator and reservoir.

Step 5 Wait approximately 30 seconds (or until the
evaporator is drained) and place the toggle switch in the OFF
position.

Step 6 Refer to chart and premix the correct solution of
cleaner and cool water for your ice machine.

Amount of Cleaner

Model

CNF201 CNF202 2 ounces (60 ml) 32 ounces (1 liter)

Part Number

000000084

Amount of Water

Step 8 Move the toggle switch to the ICE position. The

compressor will energize and produce ice with the cleaning
solution. Continue the freeze cycle for 15 minutes.

Step 9 Move the toggle switch to the OFF position, then
follow the standard cleaning (page 17) and sanitizing
procedures (page 18).

Part Number: 000015202 Rev 00 12/17 17

Maintenance Section 4

Step 7 Remove the top cover from the ice chute and pour
the cleaner/water solution into the evaporator. Add the
entire amount of premixed solution (excess solution will exit
through the overflow tube in the water reservoir).

Step 8 Replace the ice chute cover and allow the ice
machine to stand for 30 minutes.

Step 9 Turn on the water supply to the ice machine.

Step 10 Move the toggle switch to the ICE position. After

the 15 minute delay period expires, the compressor will
energize and produce ice with the cleaning solution.

Step 11 The ice machine will freeze and discharge the
cleaning solution into the bin. Allow the cycle to run for
15 minutes.

Step 12 Place the toggle switch in the OFF position and
refer to sanitizing procedure.

NOTE: Discard all ice produced during the cleaning process.
Cleaning and sanitizing must be performed on adjacent
surface areas not contacted by the water distribution system.
Refer to Component Disassembly for Cleaning/Sanitizing
(page 19) - Disassemble, clean and sanitize the ice
machine a minimum of once every six months.

Step 6 Replace the ice chute cover and allow the ice
machine to stand for 30 minutes.

Step 7 Turn on the water supply to the ice machine.

Step 8 Move the toggle switch to the ICE position. After

the 15 minute delay period expires the compressor will
energize and produce ice with the sanitizing solution.

Step 9 The ice machine will freeze and discharge the
sanitizing solution into the bin. Allow the cycle to run for
15 minutes.

NOTE: Discard all ice produced during the sanitizing process.

Step 10 Place the toggle switch in the CLEAN position. The
ice machine will run a wash cycle, a series of rinse cycles and
then stop. This entire cycle lasts approximately 30 minutes.

Step 11 Refer to Component Disassembly for Cleaning/
Sanitizing (page 19), remove clean and sanitize all parts
listed.

SANITIZING PROCEDURE

Ice machine sanitizer is used to remove algae or slime. It is
not used to remove lime scale or other mineral deposits.
Refer to the “Cleaning Procedure” for removal of lime scale
or other mineral deposits.

NOTE: Sanitizing must be performed on adjacent surface
areas not contacted by the water distribution system. Always
perform Component Disassembly for Cleaning/Sanitizing
procedure and a Cleaning Procedure before sanitizing the ice
machine.

Step 1 Turn off the water supply to the ice machine.

Step 2 Place ICE/OFF/CLEAN toggle switch in the CLEAN

position. The dump valve will open and drain the water from
the evaporator and reservoir.

Step 3 Wait approximately 30 seconds (or until the
evaporator is drained) and place the toggle switch in the OFF
position.

Step 4 Refer to the chart and add the correct amount of
sanitizer and cool water for your model ice machine.

Model Amount of Sanitizer Amount of Water

CNF201 CNF202 2 ounces (60 ml) 3 gallons (11 liters)

Step 5 Remove the top cover from the ice chute and pour
the sanitizer/water solution into the evaporator. Add the
entire amount of premixed solution (excess solution will exit
through the overflow tube in the water reservoir).

18 Part Number: 000015202 Rev 00 12/17

Section 4 Maintenance

Component Disassembly for Cleaning/Sanitizing

The ice machine must be disassembled cleaned and sanitized
every six months.

Caution

,

Do not mix Cleaner and Sanitizer solutions together. It
is a violation of Federal law to use these solutions in a
manner inconsistent with their labeling.

1. Turn off water supply to ice machine.

Warning

n

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

2. Place toggle switch in the CLEAN position for 30 seconds
to drain water from reservoir, then move toggle switch
to OFF position.

3. Run dispenser to transfer all ice from the bin to a
container.

Warning

n

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

6. Remove front cover.

A. Lift up on front cover.

B. Pull forward to disengage keyhole slots.

7. Remove ice chute cover.

A. Turn the two thumbscrews 1/4 turn.

B. Lift to remove cover.

4. Disconnect electrical power to the ice machine.

5. Remove top cover.

A. Remove two thumbscrews.

B. Lift up on top cover to remove.

Remove

Screws

Loosen

Thumbscrews

Part Number: 000015202 Rev 00 12/17 19

Maintenance Section 4

8. Lift out ice damper.

9. Lift out ice strainer ramp.

11. Loosen ice chute hose clamp.

12. Disconnect ice chute drain.

Ice Chute

Hose Clamp

Ice Chute

Drain

13. Lift up on ice chute to remove. The ice chute must be
removed before the bin cover can be removed.

10. Turn ice wiper counterclockwise to remove.

14. The ice chute can be cleaned in place. If complete
removal is desired, use a Phillips screwdriver to remove
the Hall Effect switch assembly from the ice chute.

Remove

Screw

20 Part Number: 000015202 Rev 00 12/17

Section 4 Maintenance

15. Remove three thumbscrews, then remove bin cover.

Remove Thumbscrews

16. Remove agitator bar and ice breaker on CNF202.

NOTE: Bar must be reassembled by inserting front edge into
the paddle wheel, then lowering the back edge (rounded
90 angle) to prevent water leakage into the compressor
compartment.

18. Remove ice dispensing wheel by lifting straight out.

19. Remove the water reservoir cover.

A. Push up on cover to snap off.

CNF201 - Remove Thumbscrew &

Agitator Bar

CNF202 - Remove Upright Agitator

& Agitator Bar, Then Ice Breaker

Thumbscrews, Bolts & Breaker Bar

17. Remove ice deflector.

A. Remove the two thumbscrews.

B. Lift the ice deflector out.

Remove

Wingnuts

20. Mix a solution of cleaner and warm 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

Cleaner 1 gal. (4 l)

16 oz (500 ml)

cleaner

21. Use the cleaner/water mixture to clean all components.
The cleaner solution will foam when it contacts lime
scale and mineral deposits; once the foaming stops,
use a soft-bristle nylon brush, sponge or cloth (NOT a
wire brush) to carefully clean the parts. Soak parts for
5 minutes (15 - 20 minutes for heavily scaled parts).
Rinse all components with clean water.

Caution

,

Do not pour cleaner or sanitizer solutions into the bin.
The solution will leak out of the front of the bin and into
the compressor compartment.

Part Number: 000015202 Rev 00 12/17 21

Maintenance Section 4

22. While components are soaking, clean all foodzone
surfaces of the bin. Rinse all areas thoroughly with clean
water.

Do Not Allow Solutions To

Drain Through Center Hole

23. Mix a solution of sanitizer and warm water.

Solution Type Water Mixed With

Sanitizer 6 gal. (23 l)

24. Use 1/2 of the sanitizer/water solution to sanitize all
removed components. Use a cloth or sponge to liberally
apply the solution to all surfaces of the removed parts or
soak the removed parts in the sanitizer/water solution.
Do not rinse parts after sanitizing.

25. Use 1/2 of the sanitizer/water solution to sanitize the
dispenser bin, water trough and delivery spout. Use a
cloth or sponge to liberally apply the solution. Do not
rinse the sanitized areas.

26. Reinstall the removed parts, restore water and power
supply and test run the ice machine.

NOTE: Disconnecting and reconnecting the power supply
activates a 15 minute time delay. This delay period can not
be over ridden. The delay period will start when power is
restored and the ice machine starts after the 15 minute delay
period expires.

4 oz (120 ml)

sanitizer

Cleaning the Condenser

Warning

n

Disconnect electric power to the ice machine and the
remote condenser at the electric service switch before
cleaning the condenser.

Air-Cooled Condenser

A dirty condenser restricts airflow, resulting in excessively
high operating temperatures. This reduces ice production
and shortens component life. Clean the condenser at least
every six months. Follow the steps below.

Caution

,

The condenser fins are sharp. Use care when cleaning
them.

1. The washable filter is designed to catch dust, dirt, lint
and grease. This helps keep the condenser clean. Clean
the filter with a mild soap and water solution.

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

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

A. Blow compressed air through the condenser fins

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

B. Use a commercial condenser coil cleaner. Follow the

directions and cautions supplied with the cleaner.

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

Notice

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

22 Part Number: 000015202 Rev 00 12/17

Section 4 Maintenance

Removal from Service/Winterization

GENERAL

Special precautions must be taken if the ice machine head
section 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.

Follow the procedure below.

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

2. Turn off the water supply.

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

4. Disconnect drain tubing (from the inlet to dump valve)
and drain water into container and discard.

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

Part Number: 000015202 Rev 00 12/17 23

Maintenance Section 4

THIS PAGE INTENTIONALLY LEFT BLANK

24 Part Number: 000015202 Rev 00 12/17

Section 5

Troubleshooting

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
Blue light on dispenser spout is off

Blue light on dispenser spout is on

Gear Motor runs but compressor will not
start.

Ice machine stops and can be restarted by
moving the toggle switch to OFF and back to
ICE
Ice quality is poor Poor incoming water quality Contact a qualified service company to test

Low ice capacity
or
Ice machine turns Off & On repeatedly

No electrical power to the ice machine Reset the breaker/turn on main power

switch/plug cord into receptacle
ICE/OFF/CLEAN toggle switch set improperly Move toggle switch to the ICE position
Control Board fuse open Replace the fuse
15 minute delay has not expired Wait 15 minutes for ice machine to start
High Pressure Control is open Clean filter and condenser
Water reservoir is empty. (Water sensing
switch must be closed to start the gearmotor)
Dirty air filter and/or condenser causes
the high pressure cutout and compressor
overload to open

The SafeGuard feature is stopping the ice
machine

Water filtration is poor Replace filter
Incoming water temperature is above 90°F
(32°C)

Water pressure is low Water pressure must remain between 20 and

Water softener is working improperly (if
applicable)
Incoming water supply is shut-off Open the water service valve
Water dump valve is leaking Clean the dump valve
Water Pressure is low. The water sensing
switch turns off the ice machine repeatedly
Incoming water temperature is above 90°F
(32°C)

Frequent power interruptions or power
surges/dips
Water float valve stuck open or leaking Remove the float valve and clean it
Objects stacked around ice machine, blocking
airflow to condenser
High air temperature around ice machine Air temperature must not exceed 110°F

Inadequate clearance around the ice machine Provide adequate clearance
The condenser is dirty Clean the condenser

Open water service valve or clean float valve

screen

Clean air filter and condenser - Disconnect

power for minimum 4 hours then energize. If

problem persists contact a qualified service

company to determine cause.

Refer to “SafeGuard Feature” in service

manual

the quality of the incoming water and check

filter

Correct water temperature. (Verify check/

mixing valves in other equipment are working

properly). Connect the ice machine to a cold

water supply

80 psig (138 and 552 kPA)

Repair the water softener

Water pressure must remain between 20 and

80 psig (138 and 552 kPA)

Correct water temperature. (verify check/

mixing valves in other equipment is working

properly)

Verify ice machine is on a separate circuit and

power is stable

Remove items blocking airflow

(43°C)

Part Number: 000015202 Rev 00 12/17 25

Troubleshooting Section 5

THIS PAGE INTENTIONALLY LEFT BLANK

26 Part Number: 000015202 Rev 00 12/17

MANITOWOC ICE

2110 SOUTH 26TH STREET, MANITOWOC, WI 54220

WWW.MANITOWOCICE.COM

800-545-5720

WWW.WELBILT.COM

Welbilt provides the world’s top chefs, and premier chain operators or growing independents with industry leading equipment and soluons.
Our cung-edge designs and lean manufacturing taccs are powered by deep knowledge, operator insights, and culinary experse.

All of our products are backed by KitchenCare® – our aermarket, repair, and parts service.

CLEVELAND
CONVOTHERM®

©2017 Welbilt Inc. except where explicitly stated otherwise. All rights reserved.

Part Number: 000015202 Rev 00 12/17

DELFIELD®
FITKITCHEN™

FRYMASTER®
GARLAND

KOLPAK®
LINCOLN

MANITOWOC®
MERCO®

MERRYCHEF®
MULTIPLEX®