Manitowoc Indigo NXT Series Manuale utente

Part Number 000014141 Rev 07 2/20

Indigo NXT Ice Machines

Installation, Operation and Maintenance Manual

Original Document

,Caution

Read this instruction before operating this equipment.

Engineered for Ease

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.

nWarning

Indicates a hazardous situation that, if not

avoided, could result in death or serious

injury.

,Caution

Indicates a hazardous situation that, if not

avoided, could result in minor or moderate

injury.

Notice

Indicates information considered

important, but not hazard-related (e.g.

messages relating to property damage).

NOTE: Indicates useful, extra information

about the procedure you are performing.

nWarning

Follow these precautions to prevent personal injury during installation of this

equipment:

• Installation must comply with all

applicable equipment fire and health

codes with the authority having

jurisdiction.

• To avoid instability the installation area

must be capable of supporting the

combined weight of the equipment and

product. Additionally the equipment

must be level side to side and front to

back.

• Ice machines require a deflector when

installed on an ice storage bin. Prior to

using a non-OEM ice storage system

with this ice machine, contact the

bin manufacturer to assure their ice

deflector is compatible.

• Prior to installing a non-OEM ice storage

system with this ice machine, follow the

manufacturers installation procedures

and verify the location and installation

meets the local/national mechanical

codes and stability requirements.

• Remove all removable panels before

lifting and installing and use appropriate

safety equipment during installation

and servicing. Two or more people are

required to lift or move this appliance to

prevent tipping and/or injury.

• Legs or casters must be installed and

the legs/casters must be screwed in

completely. When casters are installed

the mass of this unit will allow it to move

uncontrolled on an inclined surface.

These units must be tethered/secured

to comply with all applicable codes.

Swivel casters must be mounted on the

front and rigid casters must be mounted

on the rear. Lock the front casters after

installation is complete.

• Connect to a potable water supply only.

• Do not damage the refrigeration circuit

when installing, maintaining or servicing

the unit.

• This equipment contains refrigerant

charge. Installation of the line sets must

be performed by a properly trained and

EPA certified refrigeration technician

aware of the dangers of dealing with

refrigerant charged equipment.

DANGER

Follow these flammable refrigeration system requirements during installation, use or

repair of this equipment:

• Refer to nameplate - Ice machine models

may contain up to 150 grams of R290

(propane) refrigerant. R290 (propane)

is flammable in concentrations of air

between approximately 2.1% and 9.5%

by volume (LEL lower explosion limit and

UEL upper explosion limit). An ignition

source at a temperature higher than

470°C is needed for a combustion to

occur. Refer to nameplate to identify the

type of refrigerant in your equipment.

• To minimize the risk of ignition due to

improper installation, replacement parts

or service procedures, only refrigeration

technicians with flammable refrigerant

training who are aware of the dangers of

dealing with high voltage electricity and

refrigerant under pressure are allowed to

work on this equipment.

• All replacement parts must be like

components obtained from the

equipment manufacturers authorized

replacement part network.

• This equipment must be installed in

accordance with the ASHRAE 15 Safety

Standard for Refrigeration Systems.

• This equipment can not be installed in

corridors or hallways of public buildings.

• Installation must comply with all

applicable equipment fire and health

codes with the authority having

jurisdiction.

• All lockout and tag out procedures

must be followed when working on this

equipment.

• This equipment contains high voltage

electricity and refrigerant charge.

Shorting electrical wires to refrigeration

tubing may result in an explosion. All

electrical power must be disconnected

from the system before servicing the

system. Refrigerant leaks, can result in

serious injury or death from explosion,

fire, or contact with refrigerant or

lubricant mists.

• Do not damage the refrigeration circuit

when installing, maintaining or servicing

the unit. Never use sharp objects or

tools to remove ice or frost. Do not use

mechanical devices or other means to

accelerate the defrosting process.

nWarning

Follow these electrical requirements

during installation of this equipment:

• All field wiring must conform to all

applicable codes of the authority

having jurisdiction. It is the

responsibility of the end user to

provide the disconnect means to satisfy

local codes. Refer to rating plate for

proper voltage.

• This appliance must be grounded.

• This equipment must be positioned so

that the plug is accessible unless other

means for disconnection from the

power supply (e.g., circuit breaker or

disconnect switch) is provided.

• Check all wiring connections, including

factory terminals, before operation.

Connections can become loose during

shipment and installation.

DANGER

Do not operate equipment that has

been misused, abused, neglected,

damaged, or altered/modified from that

of original manufactured specifications.

This appliance is not intended for use by

persons (including children) with reduced

physical, sensory or mental capabilities,

or lack of experience and knowledge,

unless they have been given supervision

concerning use of the appliance by a

person responsible for their safety. Do

not allow children to play with, clean or

maintain this appliance without proper

supervision.

nWarning

Follow these precautions to prevent

personal injury while operating or

maintaining this equipment:

• Read this manual thoroughly before

operating, installing or performing

maintenance on the equipment. Failure

to follow instructions in this manual

can cause property damage, injury or

death.

• Crush/Pinch Hazard. Keep hands clear

of moving components. Components

can move without warning unless

power is disconnected and all potential

energy is removed.

• Moisture collecting on the floor will

create a slippery surface. Clean up

any water on the floor immediately to

prevent a slip hazard.

• Objects placed or dropped in the bin

can affect human health and safety.

Locate and remove any objects

immediately.

• Never use sharp objects or tools

to remove ice or frost. Do not use

mechanical devices or other means to

accelerate the defrosting process.

• When using cleaning fluids or

chemicals, rubber gloves and eye

protection (and/or face shield) must be

worn.

DANGER

Follow these precautions to prevent personal injury during use and maintenance of this

equipment:

• It is the responsibility of the equipment

owner to perform a Personal Protective

Equipment Hazard Assessment to ensure

adequate protection during maintenance

procedures.

• Do Not Store Or Use Gasoline Or Other

Flammable Vapors Or Liquids In The

Vicinity Of This Or Any Other Appliance.

Never use flammable oil soaked cloths

or combustible cleaning solutions for

cleaning.

• All covers and access panels must be

in place and properly secured when

operating this equipment.

• Risk of fire/shock. All minimum

clearances must be maintained. Do not

obstruct vents or openings.

• Failure to disconnect power at the main

power supply disconnect could result

in serious injury or death. The power

switch DOES NOT disconnect all incoming

power.

• All utility connections and fixtures must

be maintained in accordance with the

authority having jurisdiction.

• Turn off and lockout all utilities (gas,

electric, water) according to approved

practices during maintenance or

servicing.

• Units with two power cords must be

plugged into individual branch circuits.

During movement, cleaning or repair it is

necessary to unplug both power cords.

• Never use a high-pressure water jet for

cleaning on the interior or exterior of

this unit. Do not use power cleaning

equipment, steel wool, scrapers or wire

brushes on stainless steel or painted

surfaces.

• Two or more people are required to

move this equipment to prevent tipping.

• Locking the front casters after

moving is the owner’s and operator’s

responsibility. When casters are installed,

the mass of this unit will allow it to move

uncontrolled on an inclined surface.

These units must be tethered/secured to

comply with all applicable codes.

• The on-site supervisor is responsible for

ensuring that operators are made aware

of the inherent dangers of operating this

equipment.

• Do not operate any appliance with a

damaged cord or plug. All repairs must

be performed by a qualified service

company.

THIS PAGE INTENTIONALLY LEFT BLANK

Table of Contents

Part Number 000014141 Rev 07 2/20 9

Safety Notices

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

Section 1

General Information

Model Numbers ......................................................................11

Accessories..............................................................................11

How To Read A Model Number................................................12

Section 2

Installation

Installation ..............................................................................13

Location Requirements............................................................13

Installation Requirements........................................................13

Ice Machine Heat of Rejection .................................................14

Air Baffle .................................................................................16

Bin Installation Requirements..................................................16

Bin Installation ........................................................................17

Dispenser Installation..............................................................17

Electrical Requirements...........................................................18

Maximum Breaker Size & Minimum Circuit Amperage Chart....19

Water Supply and Drain Line Sizing/Connections.....................22

Water Connections ..................................................................22

Water Supply and Drain Connections.......................................23

Air Gap.................................................................................. 23

Cooling Tower Applications

(Water-Cooled Models) ...........................................................24

Drain Connections ...................................................................24

Remote Condenser and Condensing Unit Refrigeration

System Installation ..................................................................25

Calculating Installation Distances ......................................... 26

Remote Condenser Models .................................................. 27

QuietQube Models ............................................................... 28

Starting the Ice Machine..........................................................32

Remove Ice Thickness Probe Shipping Brackets ................... 32

Minimum/Maximum Slab Weight ........................................ 32

Warranty .................................................................................32

Warranty Registration........................................................... 32

Remote Ice Machine Usage with Non-Manitowoc

Multi-Circuit Condensers .........................................................33

10 Part Number 000014141 Rev 07 2/20

Table of Contents (continued)

Section 3

Operation

Touch Screen Features .............................................................35

Home Screen Icon Descriptions............................................ 36

Setup Wizard...........................................................................37

Menu Screen Navigation..........................................................38

Ice Making Sequence of Operation ..........................................39

Control Board Timers...............................................................39

Minimum/Maximum Slab Weight............................................41

Ice Thickness Check .................................................................41

Reverse Osmosis or Deionized Water Usage ............................42

Section 4

Maintenance

Descaling and Sanitizing ..........................................................43

Detailed Descaling and Sanitizing Procedure............................44

Sanitizing Procedure ............................................................. 45

Parts Removal for Detailed Descaling and Sanitizing ................47

Remedial Cleaning Procedure ..................................................48

Cleaning the Air Filter and Condenser......................................49

Removal from Service/Winterization.......................................49

Section 5

Troubleshooting

Before Calling for Service Checklist ..........................................51

Service Faults ..........................................................................53

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