iAuCS®

Automatic Cleaning System

Installation, Operation and Maintenance Manual

, Caution
Original Document Read this instruction before operating this equipment.

Part Number 000009036 Rev03 6/18

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 Safety Notices nWarning
Safety Notices Follow these electrical requirements during installation of
this equipment.
Read these precautions to prevent personal injury: • All field wiring must conform to all applicable codes of
• Read this manual thoroughly before operating, the authority having jurisdiction. It is the responsibility
installing or performing maintenance on the of the end user to provide the disconnect means to
equipment. Failure to follow instructions in this manual satisfy local codes. Refer to rating plate for proper
can cause property damage, injury or death. voltage.
• Routine adjustments and maintenance procedures • This appliance must be grounded.
outlined in this manual are not covered by the • This equipment must be positioned so that the plug is
warranty. accessible unless other means for disconnection from
• Proper installation, care and maintenance are the power supply (e.g., circuit breaker or disconnect
essential for maximum performance and trouble- switch) is provided.
free operation of your equipment. Visit our website • Check all wiring connections, including factory
www.manitowocice.com for manual updates, terminals, before operation. Connections can become
translations, or contact information for service agents loose during shipment and installation.
in your area.
• This equipment contains high voltage electricity and nWarning
refrigerant charge. Installation and repairs are to be Follow these precautions to prevent personal injury
performed by properly trained technicians aware of during installation of this equipment:
the dangers of dealing with high voltage electricity and
• Installation must comply with all applicable equipment
refrigerant under pressure. The technician must also
fire and health codes with the authority having
be certified in proper refrigerant handling and servicing
jurisdiction.
procedures. All lockout and tag out procedures must be
followed when working on this equipment. • To avoid instability the installation area must be
capable of supporting the combined weight of the
• This equipment is intended for indoor use only. Do not
equipment and product. Additionally the equipment
install or operate this equipment in outdoor areas.
must be level side to side and front to back.
• Ice machines require a deflector when installed on
DEFINITIONS an ice storage bin. Prior to using a non-OEM ice
DANGER storage system with this ice machine, contact the
bin manufacturer to assure their ice deflector is
Indicates a hazardous situation that, if not avoided, will compatible.
result in death or serious injury. This applies to the most
extreme situations. • Do not damage the refrigeration circuit when installing,
maintaining or servicing the unit.
nWarning • Connect to a potable water supply only.
Indicates a hazardous situation that, if not avoided, could • Some 50 Hz models may contain up to 150 grams
result in death or serious injury. of R290 (propane) refrigerant. R290 (propane)
is flammable in concentrations of air between
,Caution approximately 2.1% and 9.5% by volume (LEL lower
explosion limit and UEL upper explosion limit). An
Indicates a hazardous situation that, if not avoided, could ignition source at a temperature higher than 470°C is
result in minor or moderate injury. needed for a combustion to occur. Refer to nameplate
to identify the type of refrigerant in your equipment.


Notic Only trained and qualified personnel aware of the
Indicates information considered important, but not dangers are allowed to work on the equipment.
hazard-related (e.g. messages relating to property
damage).

NOTE: Indicates useful, extra information about the

procedure you are performing.

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 n Warning DANGER
Follow these precautions to prevent personal injury while Follow these precautions to prevent personal injury
operating or maintaining this equipment: during use and maintenance of this equipment:
• Read this manual thoroughly before operating, • It is the responsibility of the equipment owner to
installing or performing maintenance on the perform a Personal Protective Equipment Hazard
equipment. Failure to follow instructions in this manual Assessment to ensure adequate protection during
can cause property damage, injury or death. maintenance procedures.
• Crush/Pinch Hazard. Keep hands clear of moving • Do Not Store Or Use Gasoline Or Other Flammable
components. Components can move without warning Vapors Or Liquids In The Vicinity Of This Or Any Other
unless power is disconnected and all potential energy is Appliance. Never use flammable oil soaked cloths or
removed. combustible cleaning solutions for cleaning.
• Moisture collecting on the floor will create a slippery • All covers and access panels must be in place and
surface. Clean up any water on the floor immediately to properly secured when operating this equipment.
prevent a slip hazard.
• Risk of fire/shock. All minimum clearances must be
• Objects placed or dropped in the bin can affect human maintained. Do not obstruct vents or openings.
health and safety. Locate and remove any objects
immediately. • Failure to disconnect power at the main power supply
disconnect could result in serious injury or death. The
• Never use sharp objects or tools to remove ice or frost. power switch DOES NOT disconnect all incoming power.
Do not use mechanical devices or other means to
accelerate the defrosting process. • All utility connections and fixtures must be maintained
in accordance with the authority having jurisdiction.
• When using cleaning fluids or chemicals, rubber gloves
and eye protection (and/or face shield) must be worn. • Turn off and lockout all utilities (gas, electric, water)
according to approved practices during maintenance or
servicing.
DANGER
• Units with two power cords must be plugged into
Do not operate equipment that has been misused, abused,
individual branch circuits. During movement, cleaning
neglected, damaged, or altered/modified from that of
or repair it is necessary to unplug both power cords.
original manufactured specifications. This appliance is
not intended for use by persons (including children) with • Never use a high-pressure water jet for cleaning on
reduced physical, sensory or mental capabilities, or lack the interior or exterior of this unit. Do not use power
of experience and knowledge, unless they have been cleaning equipment, steel wool, scrapers or wire
given supervision concerning use of the appliance by a brushes on stainless steel or painted surfaces.
person responsible for their safety. Do not allow children • Two or more people are required to move this
to play with, clean or maintain this appliance without equipment to prevent tipping.
proper supervision.
• 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.

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 Table of Contents

Safety Notices
Safety Notices.................................................................................................................... 3
Definitions........................................................................................................................ 3
Section 1
General Information
Compatible Ice Machine Models........................................................................................ 7
Model Compatibility........................................................................................................ 7
Indigo® NXT........................................................................................................................ 7
iAuCS® Location.................................................................................................................. 7
Warranty Information........................................................................................................ 7
Section 2
Installation
General.............................................................................................................................. 9
Electrical Service................................................................................................................ 9
General............................................................................................................................. 9
iAuCS® Installation............................................................................................................. 9
Location/Mounting.......................................................................................................... 9
Height Requirement....................................................................................................... 10
Distance Requirement.................................................................................................... 10
Mounting....................................................................................................................... 10
Connection to Ice Machine............................................................................................ 11
Section 3
Operation
Determine Type of Solution Needed................................................................................. 15
Manitowoc Ice Machine Cleaner................................................................................... 15
Manitowoc Ice Machine Sanitizer.................................................................................. 15
Installing/Replacing Cleaner or Sanitizer Bottles............................................................... 15
Indigo® NXT Model Procedures ........................................................................................ 16
Indigo® NXT Automatic Operation................................................................................. 16
Indigo® NXT Setting Frequency of Cleaning...................................................................16
Indigo® NXT Hose Priming.............................................................................................. 16
Indigo® NXT Manual Start Operation.............................................................................17
Indigo® NXT Changing the Solution Type.......................................................................17
Indigo® Model Procedures................................................................................................ 18
Indigo® Model Automatic Operation.............................................................................18
Setting Frequency of Cleaning Indigo® Models..............................................................18
Indigo® Model Hose Priming.......................................................................................... 18
Indigo® Model Changing the Solution Type...................................................................19
Indigo® Model Manual Start Operation.........................................................................19
Changing Switch Position During Operation..................................................................19
Removal from Service/Winterization................................................................................ 20

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 Section 1
General Information

Compatible Ice Machine Models Indigo® NXT

The iAuCS® accessory can be used on Manitowoc Indigo® Self-Contained Self-Contained QuietQube
Series ice machines. Remote
Air-Cooled Water-Cooled Models
NOTE: Automatic Cleaning Systems are not compatible IDF0300A IDF0300W ---- ----
with S3000 Series, Flake/Nugget, NEO or SM50 model ice IYF0300A IYF0300W ---- ----
machines. IDT0420A IDT0420W ---- ----
IYT0420A IYT0420W ---- ----
IDT0450A IDT0450W ---- ----
MODEL COMPATIBILITY
IYT0450A IYT0450W ---- ----
Indigo® IDT0500A IDT0500W IDT0500N ----
Self-Contained Self-Contained QuietQube IYT0500A IYT0500W IYT0500N ----
Remote IRT0500A IRT0500W ---- ----
Air-Cooled Water-Cooled Models
ID0302A ID0303W ---- ---- IDF0600A IDF0600W IDF0600N IYF0600C
IY0304A IY0305W ---- ---- IYF0600A IYF0600W IYF0600N
ID0322A ID0323W ---- ---- IDT0620A IDT0620W ---- IBF0620C
IY0324A IY0325W ---- ---- IYT0620A IYT0620W ---- ----
ID0452A ID0453W ---- ---- IRT0620A ---- ---- ----
IY0454A IY0455W ---- ---- IDP0620A ---- ---- ----
IR0500A IR0501W IR0590N ---- IDF0900A IDF0900W IDF0900N IBF0820C
ID0502A ID0503W ID0592N ---- IYF0900A IYF0900W IYF0900N IYF0900C
IY0504A IY0505W IY0594N ---- IRF0900A ---- ---- IBT1020C
IR0520A IR0421W ---- ---- IDT1200A IDT1200W IDT1200N IDT1200C
ID0522A ID0423W ---- ---- IYT1200A IYT1200W IYT1200N IYT1200C
IY0524A IY0425W ---- ---- IDT1500A IDT1500W IDT1500N IDF1400C
ID0602A ID0603W ID0692N ID0682C IYT1500A IYT1500W IYT1500N IYF1400C
IY0604A IY0605W IY0694N IY0684C IDT1900A IDT1900W IDT1900N IDF1800C
---- ---- ---- IB0694YC IYT1900A IYT1900W IYT1900N IYF1800C
---- ---- ---- IB0692DC IRT1900A ---- IRT1900N ----
IR0850A IR0851W IR0890N ID0872C ---- ---- ---- IDF2100C
ID0852A ID0853W ID0892N IY0874C ---- ---- ---- IYF2100C
IY0854A IY0855W IY0894N IB0894YC
---- ---- ---- IB0892DC
IR0906A IR0906W IR0996N ID0976C iAuCS® Location
ID0906A ID0906W ID0906WM ID0996N IY0976C
IY0906A IY0906W IY0906WM IY0996N ---- The iAuCS® is mounted on the wall near the ice machine, or
ID1002A ID1003W ID1092N ID1072C on the bin with the included bracket and hardware.
IY1004A IY1005W IY1094N IY1074C The iAuCS® must be installed by a trained and qualified
---- ID1003WM ---- IB1094YC technician.
---- ---- ---- IB1092DC
ID1202A ID1203W ---- ID1272C Warranty Information
IY1204A IY1205W ---- IY1274C
ID1402A ID1403W ID1492N ID1472C Visit www.manitowocice.com for:
IY1404A IY1405W IY1494N IY1474C
• Warranty Verification
---- ID1403WM ----
IR1800A IR1801W IR1890N ID1872C • Warranty Registration
ID1802A ID1803W ID1892N IY1874C
• View and download a copy of your warranty
IY1804A IY1805W IY1894N ----
---- ---- ---- ID2172C
---- ---- ---- IY2174C

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 Section 2
Installation

General iAuCS® Installation

These instructions are provided to assist the qualified
LOCATION/MOUNTING
installer. Check your local Yellow Pages for the name of the
nearest distributor, or contact Manitowoc Ice for information nWarning
regarding start-up services.
All wiring must conform to local, state and national codes.
Please contact you local Manitowoc Distributor or contact
Manitowoc Ice for assistance if you encounter a problem that nWarning
is not covered by this manual.
The ice machine and iAuCS® must be grounded in


Notic accordance with national and local electrical codes.
Failure to follow these installation guidelines may affect
warranty coverage. Improper installation will affect

Importan
dispensing rate. Install only within the parameters Observe correct polarity of incoming line voltage.
outlined in this installation manual.
The location selected must meet the following criteria. If any
of these criteria are not met, select another location.
Electrical Service
• The location must be free of airborne and other
GENERAL contaminants.
• The air temperature must be at least 40°F (4°C), but must
nWarning not exceed 110°F (43°C).
A trained and qualified technician must install the iAuCS®.
• The location must not be near heat-generating
Voltage Phase Cycle Amperage equipment or in direct sunlight.
115/1/60 0.3
208-230/1/60 0.1

Notic
The iAuCS® accessory must be protected if it will be
Line voltage is obtained from the ice machine. Refer to the subjected to temperatures below 32°F (0°C). Failure
Model/Serial plate on the ice machine and iAuCS® to verify caused by exposure to freezing temperatures is not
both voltages are the same. covered by the warranty. See “Removal from Service/
Winterization” on page 20.

Part Number 000009036 Rev03 6/18 9

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 Installation Section 2

HEIGHT REQUIREMENT MOUNTING

Either the base or the top of the iAuCS® accessory must Parts
be within 2" (5 cm) of the base of the ice machine. Do not
1/2" PVC Conduit
mount the iAuCS® unit too high or too low. Fitting

Notic
The cleaner or sanitizer may siphon (or dispense
improperly) into the ice machine water trough if the
iAuCS® unit is mounted too high or too low. Hose Clamps

DISTANCE REQUIREMENT
The iAuCS® unit must be mounted within 9 feet (2.7 m)
Locknut
of the ice machine to accommodate the low voltage
communication wire and tubing. The tubing may be
shortened to accommodate a run of less than 9 feet (2.7 m).

Notic Bumper

Do not extend the length of the 9-foot (2.7 m) low voltage

communication wire or tubing. The correct amount of
solution will not dispense. Foam Tape

Base of Ice
Machine

Bracket

2"
(5 cm)


Notic
The iAuCS® unit may be mounted to the bin or dispenser
only when permitted by local electrical codes.

Mounting to Bin or Dispenser

NOTE: The ice machine’s serviceability may be reduced when
the iAuCS® unit is mounted to the bin or dispenser. Wall
Box Base or Box Top Must
Be Within 2" mounting is recommended.
(5 cm) of Ice Machine
Base 1. Set the mounting bracket over the bin top rail at desired
location.
2. Remove the backing from the foam adhesive tape. Apply
tape to mounting bracket, and along the entire bin rail.
3. Align the iAuCS® key slots with the mounting bracket
tabs. Verify the tabs are at the top of the key slots and
that the iAuCS® unit is level.

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 Section 2 Installation

4. Remove the backing from the adhesive bumpers. Attach CONNECTION TO ICE MACHINE
bumpers to the mounting bracket directly above the Electrical Connections
iAuCS® control box. This eliminates upward movement
1. Check electrical code for your area.
and stops the tabs from disengaging the key slots.
Gasket • When local code allows, the included wire and strain
Mounting relief can be used for line voltage wiring. Remove
Bracket
knockout from ice machine and install strain relief
and wire.
• When conduit is required, remove strain relief and
ice machine electrical knockout. Install conduit as
required by your electrical code.

Bumper nWarning
Disconnect the electrical power supply to the ice machine
at the electrical disconnect before proceeding.
Mounting to Ice Machine
• Connections on ice machines vary. Refer to the
Mounting to Wall diagram for the ice machine you are working on.
The iAuCS® is mounted to the wall using the two key slots in 2. Remove the front, top, and right side panels from the ice
the back wall of the accessory. Screw fasteners (not supplied) machine.
must hold the entire weight of the iAuCS® (approximately 10
3. Route line voltage wires through control box line voltage
lbs. [4.5 kg]).
Heyco fitting. Connect line voltage wires to incoming
6.56"
(16.6 cm) power supply of contactor and ground screw.
NOTE: On QuietQube Ice Machines the power connection
is made at the incoming power supply (L1 and L2). Cut-off
yellow terminal (L2) and purple terminal (L1) on iAuCS®
harness. Strip insulation back 1/2" and connect.

Low Voltage
Heyco
Fittings

Connect
ground wire
to ground
screw

Key Slot Dimensions

Line Voltage
Heyco
Fittings
Connect to incoming
power supply of
contactor observing
proper polarity for
115V

Part Number 000009036 Rev03 6/18 11

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 Installation Section 2

Communication Wire and Vinyl Tubing Vinyl Tubing Connection

The communication wire and vinyl tubing must be installed in 1. Remove the water trough.
conduit to protect them from damage.
A. Depress tabs on right and left side of the water
1. Remove the 7/8" knockout hole plug located on the back trough.
of the ice machine.
2. Install conduit from the iAuCS® unit to the ice machine. B. Allow front of water trough to drop as you pull
A pulling elbow is recommended for easier routing of forward to disengage the rear pins.
the vinyl tubing and modular wire. 2. Locate the water inlet tube on the right hand side (see
3. Route low voltage communication wire and vinyl tubing below) of the ice machine base.
together through the conduit. • After serial number 1101246915 - Use a screwdriver
4. Route modular wire through control box low voltage to remove membrane.
Heyco fitting. Do not route with line voltage wiring, as • Before serial number 1101246915 - Press up on the
erratic operation could result. Connect modular wire to plug until it is out.
control board.
5. Connect the communication wire to the iAuCS® control
board.

iAuCS®
Communication
Plug Connection

Water Inlet
Control Board Plug Location Tubing

Press up on
bottom of plug
to pop out

After Serial Number

1101246915 use
screwdriver to remove
membrane

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 Section 2 Installation

3. Locate and remove either the membrane material or the 5. Determine the amount of tubing required in the iAuCS®
plug from the ice machine. control box and cut off the excess tubing.
4. Apply food grade silicone and install Y connector through 6. Slide the tubing on the iAuCS® pump.
the hole in the ice machine base. Connect the clear vinyl
tubing to one side of the Y branch. The other side is for
the plug removed in step 3 or the plug provided with the Slide the tubing
iAuCS®. on the iAuCS®
pump
Route tubing
to this area

Insert Y
connector
with tubing

Top View

Connect
Install plug Tubing
provided with
iAuCS®
or
plug removed in
Step 3

Into Base of
Ice Machine

Y-Connector

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 Section 3
Operation

Determine Type of Solution Needed

Importan

,Caution Using the iAuCS® accessory is supplemental to regular
cleaning and sanitizing. The iAuCS® accessory will clean
Use only Manitowoc approved Ice Machine Cleaner surfaces that come in contact with the water distribution
& Sanitizer. It is a violation of Federal law to use these system. Periodic maintenance must be performed every
solutions in a manner inconsistent with their labeling. six months that includes sanitizing the bin (or dispenser)
Read and understand all labels on the bottles before use. and adjacent surface areas, which cannot be contacted
by the water distribution system. Refer to the ice machine
The iAuCS® accessory will dispense Cleaner OR Sanitizer. It installation operation and maintenance manual for
cannot dispense both at the same time. cleaning/sanitizing procedures.
MANITOWOC ICE MACHINE CLEANER
Part Number 9405463 Installing/Replacing Cleaner or Sanitizer Bottles
Ice Machine Cleaner is used to control buildup and to remove
lime scale or other mineral deposits. It will not “sanitize” the ,Caution
ice machine. Do not mix Cleaner and Sanitizer solutions together. It
It is recommended for use in places that have lime scale or is a violation of Federal law to use these solutions in a
other mineral deposits, but no problems with slime. manner inconsistent with their labeling.
Model Amount of Cleaner Dispensed
22" or 30" 1. Remove left iAuCs®panel.
3 oz (88 ml)
Ice Machine
48" Ice Machine 6 oz (177 ml)

MANITOWOC ICE MACHINE SANITIZER

Part Number 9405653
Ice Machine Sanitizer is used for sanitizing and controlling
algae buildup (slime) and other bacterial growth. The ice
machine (and bin or dispenser) must be sanitized on a 2. Unscrew nozzle/tubing from bottle, then remove bottle.
regular schedule, following Manitowoc recommendations
3. Remove bottle cap and foil seal from new bottle.
and local regulations.
4. Install nozzle/tubing on new bottle.
It is recommended for use in places such as pizzerias, bars,
bakeries, etc., that have airborne bacteria (yeast). Sanitizing 5. Reinstall left panel.
is also recommended in places that do not have lime scale
(or other mineral deposit problems).
Unscrew cap and remove bottle
Model Amount of Sanitizer Dispensed
22" or 30"
3 oz (88 ml) Remove cap and foil seal from new
Ice Machine bottle and install
48" Ice Machine 6 oz (176 ml)

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 Operation Section 3

Indigo® NXT Model Procedures INDIGO® NXT HOSE PRIMING

The dispense pump requires priming after initial installation,
INDIGO® NXT AUTOMATIC OPERATION or if the hose between the iAuCS® reservoir and pump has
The following occurs when the ice machine is in ice making been pumped dry or the tubing between the iAuCS® pump
mode: and the ice machine has been pumped dry.
• A cleaning sequence starts when the time interval equals nWarning
the Frequency of Cleaning setting of the iAuCS®.
Do not blow into or suck on the hose in an attempt to
• When the clean sequence is complete prime it.
(approximately 35 minutes depending on model), ice
making resumes until the next cleaning setpoint.


Importan
INDIGO® NXT SETTING FREQUENCY OF CLEANING iAuCS® does not operate when the CLEAN button is used
1. Navigate to iAuCs® on the touchscreen: to start a clean cycle. To prime the hose, activation is
Menu/Settings/iAuCs®. required through the Service Menu/iAuCS® icon.
2. Use the arrows to select the frequency of cleaning - from Perform the following procedure:
once a month, up to once every six months.
1. Remove all ice from the evaporator(s) before priming.
3. Select On, then press the Home icon. Priming the pump
is required if initial installation or the dispense hose does 2. Place a bottle of cleaner or sanitizer in the
not contain cleaner or sanitizer. iAuCs®cabinet. Insert the pump inlet hose into the bottle
and verify the pump outlet hose is correctly attached to
the ice machine. Refer to “Installing/Replacing Cleaner
or Sanitizer Bottles” on page 15.
3. Navigate to iAuCs® on the touchscreen:
Menu/Service/iAuCs®.
4. Select On - A cleaning cycle will start by purging the
water in the water trough. When the water trough refills
and water contacts the water level probe, the iAuCs®
pump will energize and prime the pump (touchscreen
displays step 4).
NOTE: After the iAuCs® pump dispenses, the washing, rinsing
and flushing cycles must complete before an ice making cycle
can start.
5. The ice machine will turn off at the end of the cycle.
To automatically start ice making when the cycle is
complete, press the power button Off, then On during
either the wash or rinse cycles. The clean cycle will
resume from the beginning of either the washing
or rinsing/flushing cycle, depending on the point of
interruption.

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 Section 3 Operation

INDIGO® NXT MANUAL START OPERATION INDIGO® NXT CHANGING THE SOLUTION TYPE
Step 1 Ice must not be on the evaporator during the
,Caution
clean/sanitize cycle. Follow one of the methods below:
Wear rubber gloves and safety goggles (and/or face
• Press the power switch at the end of a harvest cycle after shield) when handling Cleaner and Sanitizer.
ice falls from the evaporator(s).
• Press the power switch and allow the ice to melt. ,Caution
• Use the touchscreen to initiate a manual harvest cycle Do not mix Cleaner and Sanitizer solutions together. It
Menu/Service/Manual harvest/press to start harvest. is a violation of Federal law to use these solutions in a
Step 2 Navigate to iAuCs® on the touchscreen: manner inconsistent with their labeling.
Menu/Service/iAuCs®/Select On
A cleaning cycle will start by purging the water in the water

Notic
trough. When the water trough refills and water contacts Do not use 1 gallon bottles of Cleaner or Sanitizer on the
the water level probe, the iAuCs® pump will energize iAuCS® accessory.
(touchscreen displays step 4).
NOTE: After the iAuCs® pump dispenses, the washing, rinsing Use the following procedure to flush the system prior to
and flushing cycles must complete before an ice making cycle changing from Cleaner to Sanitizer or from Sanitizer to
can start. Cleaner.
Step 3 The ice machine will turn off at the end of the 1. Remove all ice from the evaporators before proceeding.
cycle. To automatically start ice making when the cycle 2. Remove the bottle of Cleaner or Sanitizer from the
is complete, press the power button Off, then On during iAuCS®. Flush the bottle thoroughly, then fill with water.
the wash cycle (step 5 Washing is displayed). The clean
3. Repeat the following a minimum of two times:
cycle will resume from the beginning of the washing cycle
and automatically start ice making when the clean cycle is A. Navigate to iAuCs® on the touchscreen and select :
complete. Menu/Service/iAuCs®.

B. A cleaning cycle will start by purging the water in

Importan the water trough. When the water trough refills and
Opening the curtain switch will interrupt the clean water contacts the water level probe, the iAuCs®
sequence. The sequence will resume from the point of pump will energize and prime the pump
interruption when the curtain re-closes. 4. Install a new bottle of cleaner or sanitizer solution.
Refer to “Installing/Replacing Cleaner or Sanitizer
Bottles” on page 15.

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 Operation Section 3

Indigo® Model Procedures INDIGO® MODEL HOSE PRIMING

The dispenser pump requires priming after initial installation,
INDIGO® MODEL AUTOMATIC OPERATION or if the hose between the iAuCS® reservoir and pump has
The following occurs when the ice machine is in ice making been pumped dry or the tubing between the iAuCS® pump
mode: and the ice machine has been pumped dry.
• A cleaning sequence starts when the time interval equals nWarning
the Frequency of Cleaning setting of the iAuCS®.
Do not blow into or suck on the hose in an attempt to
• When the clean sequence is complete prime it.
(approximately 25 minutes depending on model), ice
making resumes until the next cleaning setpoint.
Perform the following procedure:
SETTING FREQUENCY OF CLEANING INDIGO® MODELS 1. Press the CLEAN button.
The iAuCS® unit is factory-set to initiate and complete a clean 2. The water pump and dump valve will turn on. The dump
sequence approximately once every two weeks. valve will shut off after approximately 45 seconds.
iAuCS® 3. The control waits until water contacts the water level
For less frequent cleaning, use the controller to select an probe then energizes the iAuCS® pump (22" or 30" ice
interval. machines - 30 seconds, 48" ice machines - 60 seconds).
1. Press Menu. 4. Allow the ice machine to complete the cleaning or
2. Scroll to Setup and press right arrow. sanitizing cycle.

3. Scroll to iAuCS Runtime and press right arrow.

Importan

Display reads: The priming procedure starts the automatic cleaning
iAuCS on mode. After starting an ice making cycle, the ice machine
iAuCS off will run through 6 rinse and dump cycles before making
Set interval ice.
Exit
4. Select iAuCS on and press check mark.
5. Select Set interval. Display reads:
.5 mo
1 mo
2 mo
3 mo
4 mo
5 mo
6 mo
Exit
6. Select desired time period and press check mark
(15 days, 1 month, 2 months, etc.).
7. Press left arrow repeatedly to exit to Main screen.

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 Section 3 Operation

INDIGO® MODEL CHANGING THE SOLUTION TYPE INDIGO® MODEL MANUAL START OPERATION
Step 1 Press the power button after ice falls from the
,Caution evaporator at the end of a Harvest cycle. Or, press the power
Wear rubber gloves and safety goggles (and/or face button and allow the ice to melt off the evaporator.
shield) when handling Cleaner and Sanitizer.


Notic
,Caution Never use anything to force ice from the evaporator.
Do not mix Cleaner and Sanitizer solutions together. It Damage may result.
is a violation of Federal law to use these solutions in a
manner inconsistent with their labeling. Step 2 To start the automatic cleaning system, press the
CLEAN button. The water will flow through the water dump


Notic valve and down the drain. The clean light will turn on to
Do not use 1 gallon bottles of Cleaner or Sanitizer on the indicate the ice machine is in Clean Mode.
iAuCS® accessory. The iAuCS® pump energizes automatically to add cleaner or
sanitizer to the ice machine.
Use the following procedure to flush the system prior to Step 3 The ice machine will automatically time out a wash
changing from Cleaner to Sanitizer or from Sanitizer to cycle, followed by rinse cycles, and stop. This entire cycle
Cleaner. lasts approximately 24 minutes for Indigo® Series.
1. Remove the bottle of Cleaner or Sanitizer from the
Step 4 The ice machine will start and finish the clean
iAuCS®. Flush the bottle thoroughly then fill with water.
sequence, then automatically start ice making again.
2. Repeat the following until the water bottle is empty
(approximately 8 times): CHANGING SWITCH POSITION DURING OPERATION
A. Press the CLEAN button. If a clean cycle is started and then stopped before the water
inlet valve energizes or the water pump starts (45 seconds
B. The water pump and dump valve will turn on. into the cycle), the clean cycle will be aborted.
The dump valve will shut off after approximately If a clean cycle is started and then stopped after the water
45 seconds. inlet valve energizes (more than 45 seconds into the cycle)
C. The control waits until the water contacts the water and is then switched to:
level probe then energizes the iAuCS® pump (22" or ICE MAKING The clean sequence resumes from the point of
30" ice machines - 30 seconds, 48" ice machines - 60 interruption. After completion of the cleaning
seconds). sequence, the counter resets and the ice
machine starts making ice.
D. Press the POWER button after step C is completed. CLEAN The clean sequence resumes from the point of
interruption.
3. Install a new bottle of cleaner or sanitizer solution.
After the clean cycle is complete, the ice
machine will stop and wait until either Ice
Making or Clean is manually selected.

After the iAuCs® pump energizes, the ice machine must

complete the wash and rinse cycles before ice making can
start.

Part Number 000009036 Rev03 6/18 19

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 Operation Section 3

Removal from Service/Winterization

Notic
Leaving solutions in the iAuCS® in freezing temperatures
may result in severe damage to the dispensing pump. A
failure of this nature is not covered by the warranty.

If the iAuCS® is to be removed from service for extended

periods, or if it is to be exposed to ambient temperatures
32°F (0°C) or below, follow this procedure:
1. Remove the Cleaning or Sanitizing solution bottle.
2. Follow the instructions for your model ice machine to
pump all of the solution out of the dispensing pump and
lines:
• “Indigo® NXT Hose Priming” on page 16
• “Indigo® Model Hose Priming” on page 18

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 MANITOWOC ICE
2110 SOUTH 26TH STREET, MANITOWOC, WI 54220
844-724-2273
WWW.MANITOWOCICE.COM

WWW.WELBILT.COM

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Our cutting-edge designs and lean manufacturing tactics are powered by deep knowledge, operator insights, and culinary expertise.
All of our products are backed by KitchenCare® – our aftermarket, repair, and parts service.

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CONVOTHERM® FITKITCHEN™ GARLAND LINCOLN MERCO® MULTIPLEX®

©2017 Welbilt Inc. except where explicitly stated otherwise. All rights reserved.
Part Number 000009036 Rev03 6/18

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