Manitowoc Ice RNS20A Operator’s Manual

CounterTop Nugget Ice Machines

RNS12 / RNS20 Models

Installation, Operation and Maintenance Manual

This manual is updated as new information and models are released. Visit our website for the latest manual.

Part Number: 000008276 10/13

Table of Contents

Section 1
General Information
Model Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4
Manitowoc Cleaner and Sanitizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4
Legs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4
Touchless Sensing Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4
Section 2
Installation Instructions
Location of Ice Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	5
Ice Machine Clearance Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	5
Electrical Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	6
Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	6
Fuse/Circuit Breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	6
Total Circuit Ampacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	6
Electrical Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	6
Water Supply and Drains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	6
Potable Water Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	6
Potable Water Inlet Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	6
Drain Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	6
Water Supply and Drain Line Sizing/Connections . . . . . . . . . . . . . . . . . . . . . . .	7
Before Starting the Ice Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	8
Installation Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	8
Section 3
Operation
Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	9
15 Minute Time Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	9
Prior to Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	9
Initial Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	9
Freeze Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	9
Automatic Shut-off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	9
Restart After Automatic Shut-off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	9
Operational Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	10
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	10
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	10

2	Part Number 000008276 10/13

Table of Contents (continued)

Section 4 Maintenance

Cleaning and Sanitizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Exterior Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Preventative Maintenance Cleaning Procedure . . . . . . . . . . . . . . . . . . . . . . . . 12 Procedure to Clean Heavily Scaled Flake/Nugget Ice Machines . . . . . . . . . . . 13 Cleaning Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Sanitizing Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Component Disassembly for Cleaning/Sanitizing . . . . . . . . . . . . . . . . . . . . . . . . 15 Cleaning the Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Removal from Service/Winterization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Section 5

Customer Support

Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Flake/Chiplet/Nugget Commercial Ice Machine Warranty . . . . . . . . . . . . . . . . . . 21

Residential Ice Machine Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Part Number 000008276 10/13

3

Section 1

General Information

Model Numbers

This manual covers the following models:

	Lever Activated	Touchless Sensor
		Activated
	RNS12A	RNS12AT
	Self Contained Air-Cooled	Self Contained Air-Cooled
	Nugget Ice Machine	Nugget Ice Machine
	RNS20A	RNS20AT
	Self Contained Air-Cooled	Self Contained Air-Cooled
	Nugget Ice Machine	Nugget Ice Machine
		RNS20ATS
	N/A	Self Contained Air-Cooled
		Nugget Ice Machine

! Warning

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.

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.	000000084	16 oz.	94-0565-3
		1 Gallon	94-0581-3

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.

4	Part Number 000008276 10/13

Section 2

Installation Instructions

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.

! Warning

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.

Ice Machine Clearance Requirements

	RNS12	RNS20
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.

! Caution

The ice machine head section 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”.

Part Number 000008276 10/13

5

Installation Instructions	Section 2

Electrical Service

! Warning

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.

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

! Warning

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

! Warning

PERSONAL INJURY POTENTIAL

If the supply cord is damaged, do not operate the equipment until the cord is replaced by a service agent or similarly qualified person.

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.

Electrical Requirements

		Voltage	Air-Cooled
	Ice Machine		Total
		Phase
			Circuit
		Cycle
			Amps
	RNS12	115/1/60	10.3 amps
	RNS20	230/1/50	5.4 amps

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

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 the ice making water lines.

•Insulate water inlet lines to prevent condensation.

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.

6	Part Number 000008276 10/13

Section 2	Installation Instructions

WATER SUPPLY AND 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	45°F (6°C) Min.	20 psi (137.9 kPA) Min.	3/8" Female	3/8" (10 mm) minimum
	Water Inlet	90°F (32°C) Max.	80 psi (551.5 kPA) Max.	Pipe Thread	inside diameter
	Ice Machine	---	---	3/4" Female	3/4" (19 mm) minimum
	Drain			Pipe Thread	inside diameter

	DRAIN CONNECTION IS
	INTERCHANGEABLE
	DRAIN IS PREINSTALLED TO RUN OUT
	THE BACK
	MOVE DRAIN PLUG TO RUN DRAIN
	OUT THE BOTTOM IF DESIRED
ICE MAKING
WATER INLET
TUBING 3/8" MIN.	DRAIN
I.D. (.95 cm)

Typical Water Supply Drain Installation

Part Number 000008276 10/13

7

Installation Instructions	Section 2

Before Starting the Ice Machine

INSTALLATION CHECKLIST

X	Checklist Item
	Is the Ice Machine level?
	Has 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 dispenser 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 behind front cover)

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

Potential Personal Injury Situation

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

8	Part Number 000008276 10/13

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).

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.

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 SHUT-OFF

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 SHUT-OFF

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 shut-off.

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.

Part Number 000008276 10/13

9

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 Customer Support if the ice machine has power and the light will not energize.

Toggle Switch

The toggle switch must be placed in the ON 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 insure 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 FLOAT

10	Part Number 000008276 10/13

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

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 & water solution (refer to Page 14). 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 000008276 10/13

11

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 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
RNS12 RNS20	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

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.

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.

12	Part Number 000008276 10/13

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
RNS12 RNS20	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.

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 13) and sanitizing procedures (Page 14).

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
	Model	Cleaner	Amount of Water
		Part Number
		000000084
	RNS12 RNS20	2 ounces (60 ml)	32 ounces (1 liter)

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13

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 15) - Disassemble, clean and sanitize the ice machine a minimum of once every six months.

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	Amount of Water
		Sanitizer
	RNS12 RNS20	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).

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 15) remove clean and sanitize all parts listed.

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