Multiplex N2Fusion Maintance Manual

N2Fusion™

Nitrogen Beverage Dispenser

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: 9290312 May/17/2016

Safety Notices

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.

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.

Section 1
General Information

Section 2
Installation

Table of Contents

Safety Notices ..................................................................................................................... 2

Definitions.................................................................................................................................................2

Read This Manual ............................................................................................................... 5

Unit Inspection ................................................................................................................... 5

Model Numbers .................................................................................................................. 5

Serial Number Location ..................................................................................................... 5

Warranty Information ........................................................................................................ 5

Specifications .....................................................................................................................6

Dimensions ...............................................................................................................................................6

Capacity & Weight ..................................................................................................................................6

Product Delivery Location ...................................................................................................................7

Refrigerant Charge .................................................................................................................................7

Electrical ....................................................................................................................................................8

Section 3
Operation

Section 4
Maintenance

Step-by-Step Installation ...................................................................................................9

Pre-installation Checklist .....................................................................................................................9

Nitrogen Regulator & Tank Assembly .......................................................................................... 10

Nitrogen Installation/Replacement .............................................................................................. 10

Nitrogen Connections & Pressures ...............................................................................................11

N2 Quick Disconnect & Drain ........................................................................................................... 11

Keg & Pump Regulators .................................................................................................................... 11

Plumbing Diagram ..............................................................................................................................13

Door Hinge Reversal........................................................................................................................... 14

Machine Operation ..........................................................................................................15

Controls/Programming/Settings ................................................................................................... 15

Evaporator Fan Operation ................................................................................................................ 15

Taps ..........................................................................................................................................................15

Kegs .......................................................................................................................................................... 16

Priming the System ............................................................................................................................16

Clearing Error Code ............................................................................................................................ 16

Cleaning & Sanitizing ....................................................................................................... 17

General Cleaning ................................................................................................................................. 18

Cleaning Supplies ............................................................................................................................... 18

Level 2 - Weekly Cleaning ................................................................................................................. 21

DOORS/HINGES .................................................................................................................................... 24

Part Number: 9290312 May/17/2016 3

Section 5
Troubleshooting

Table of Contents (continued)

Troubleshooting Charts ...................................................................................................25

Dispensing Issues ................................................................................................................................ 25

Refrigerator Cabinet Issues .............................................................................................................. 26

4 Part Number: 9290312 May/17/2016

Section 1

General Information

Read This Manual

Manitowoc Foodservice developed this manual as a
reference guide for the owner/operator and installer of this
equipment. Please read this manual before installation or
operation of the machine. A qualified service technician
must perform installation and start-up of this equipment.
Consult Section 4 within this manual for service assistance.

If you cannot correct the service problem, consult
Manitowoc KitchenCare at 1-844-724-CARE. Always have
your model and serial number available when you call.

Your Service Agent _______________________________

Service Agent Telephone Number ____________________

Your Local Distributor______________________________

Distributor Telephone Number ______________________

Model Number __________________________________

Serial Number ___________________________________

Installation Date _________________________________

Unit Inspection

Thoroughly inspect the unit upon delivery. Immediately
report any damage that occurred during transportation
to the delivery carrier. Request a written inspection report
from a claims inspector to document any necessary claim.
See "" on page 9.

Warning

n

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

Warning

n

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.

Model Numbers

This manual covers the following models:

N2Fusion™ Nitrogen Beverage Dispenser

ND21TS00

Serial Number Location

The serial number on N2Fusion™ Nitrogen Beverage
Dispenser is printed on the left side of the interior wall.

Always have the serial number of your unit available
when calling for parts or service.

Sample Serial Tag

Warranty Information

Consult your local Service Agent or Representative for terms
and conditions of your warranty. Your warranty specifically
excludes all general adjustments, cleaning, accessories and
related servicing.

Your warranty card must be returned to activate the
warranty on this equipment. If a warranty card is not
returned, the warranty period can begin when the
equipment leaves the factory.

No equipment may be returned without a written Return
Materials Authorization (RMA). Equipment returned without
an RMA will be refused at the dock and returned to the
sender at the sender’s expense.

Please contact your local distributor for return procedures

Part Number: 9290312 May/17/2016 5

General Information Section 1

Specifications

DIMENSIONS

A

H

F

I

G

B

C

D

E

Model A B C D E F G H I

ND21TS00

27.33”

(69cm)

34.00”

(86cm)

28.36”

(72cm)

To avoid instability the installation area must be
capable of supporting the weight of the equipment.
Additionally the equipment must be level side to side
and front to back.

20.70”

(53cm)

n

13.66”

(35cm)

Warning

16.12”

(41cm)

44.56”

(113cm)

10.60”

(27cm)

7.32”

(19cm)

CAPACITY & WEIGHT

Model Max Capacity Volume HP Weight

ND21TS00 3 - 3 Gallon Coffee Kegs 5.7Ft3 (161L) 1/5 168lbs (76kg)

6 Part Number: 9290312 May/17/2016

Section 1 General Information

PRODUCT DELIVERY LOCATION

Warning

n

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.

Warning

n

Adequate means must be provided to limit the
movement of this appliance without depending on or
transmitting stress to the electrical conduit or gas lines.

Warning

n

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.

Warning

n

This equipment is intended for indoor use only. Do not
install or operate this equipment in outdoor areas.

Clearances

DANGER

Minimum clearance requirements are the same for
noncombustible locations as for combustible locations.
The flooring under the appliance must be made of a
noncombustible material.

DANGER

Risk of fire/shock. All minimum clearances must be
maintained. Do not obstruct vents or openings..

Sides 0" (0 cm)

Back 3” (76mm)

Front 30" (76 cm)

Warning

n

Do not obstruct machine vents or openings this includes
installing in an enclosed cabinet where the unit will not
have access to ambient air.

Warning

n

Do not position the air intake vent near steam or heat
exhaust of another appliance.

The location selected for the equipment must meet the
following criteria. If any of these criteria are not met, select
another location.

• Units are intended for indoor use only.

• The location MUST be level both front to back and side
to side, stable and capable of supporting the weight of
the equipment.

• Position the equipment so it will not tip or slide.

• Recommended air temperature is 41° - 86°F (5° - 30°C),
and must not exceed 90°F (32°C), climate class 4.

• Location must have proper ventilation, DO NOT install
in an enclosure/enclosed cabinet with no access to
ambient air.

• The location must not be near heat-generating
equipment or in direct sunlight and must be protected
from weather.

• Verify floor of install location is within 1/2” (1.3 cm) of
level front to back, side to side.

• Keep equipment area clear of combustible material.

• Do not install the equipment directly over a drain.
Steam rising up out of the drain will adversely affect
operation, air circulation, and damage electrical /
electronic components

Heat of Rejection

Model BTU/h

ND21TS00 1430

REFRIGERANT CHARGE

Important

Due to continuous improvements, this information is
for reference only. Please refer to the serial number tag
to verify electrical data. Serial tag information overrides
information listed on this page.

Model Type Refrigerant Charge

ND21TS00 R404A 7.0 oz (198g)

Part Number: 9290312 May/17/2016 7

General Information Section 1

ELECTRICAL

DANGER

Check all wiring connections, including factory
terminals, before operation. Connections can become
loose during shipment and installation.

DANGER

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.

Warning

n

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

Minimum Circuit Ampacity

The minimum circuit ampacity is used to help select the wire
size of the electrical supply. (Minimum circuit ampacity is not
the N2Fusion System’s running amp load.) The wire size (or
gauge) is also dependent upon location, materials used, length
of run, etc., it must be determined by a qualified electrician.

Voltage

A dedicated electrical circuit is required, a power cord is
provided with all units. Some models are available in different
voltages and may be equipped with a different plug.

The following precautions must be observed:

• The equipment must be grounded.

• A separate fuse/circuit breaker must be provided for
each unit.

• A qualified electrician must determine proper wire size
dependent upon location, materials used and length
of run (minimum circuit ampacity can be used to help
select the wire size).

• The maximum allowable voltage variation is ±10% of
the rated voltage at equipment start-up (when the
electrical load is highest).

• Check all green ground screws, cables and wire
connections to verify they are tight before start-up.

Minimum Circuit Amperage Chart

Important

Due to continuous improvements, this information is
for reference only. Please refer to the serial number tag
to verify electrical data. Serial tag information overrides
information listed on this page.

Model Voltage/Cycle/Phase

ND21TS00 115/60/1 6.0 A 1/5 15 A

Grounding Instructions

This appliance must be grounded. In the event of
malfunction or breakdown, grounding provides a path
of least resistance for electric current to reduce the
risk of electric shock. This appliance is equipped with a
cord having an equipment-grounding conductor and
a grounding plug. The plug must be plugged into an
appropriate outlet that is properly installed and grounded
in accordance with all local codes and ordinances.

Warning

n

When using electric appliances, basic precautions must
always be followed, including the following:

A. Read all the instructions before using the

appliance.

B. To reduce the risk of injury, close supervision

is necessary when an appliance is used near

children.
C. Do not contact moving parts.
D. Only use attachments recommended or sold by

the manufacturer.
E. Do not use outdoors.
F. For a cord-connected appliance, the following

must be included:

• Do not unplug by pulling on cord. To unplug,
grasp the plug, not the cord.

• Unplug from outlet when not in use and
before servicing or cleaning.

• Do not operate any appliance with a
damaged cord or plug, or after the appliance
malfunctions or is dropped or damaged in
any manner. Contact the nearest authorized
service facility for examination, repair, or
electrical or mechanical adjustment.

G. Follow applicable lock out tag out procedures

before working on equipment.

H. Connect to a properly grounded outlet only. See

Grounding Instructions.

Total

Amps

HP

Breaker

Size (Max)

8 Part Number: 9290312 May/17/2016

Section 2

Installation

Step-by-Step Installation

These instructions are provided to assist the qualified installer. Contact your Manitowoc Foodservice Service Agent or call
Manitowoc Foodservice for information regarding start-up services.

DANGER

Use appropriate safety equipment during installation
and servicing.

DANGER

Installation must comply with all applicable fire and
health codes in your jurisdiction.

Warning

n

Remove all removable panels before lifting and installing.

Warning

n

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

PREINSTALLATION CHECKLIST

Any damage should be noted and reported to the
delivering carrier immediately.

Check the lower portion of the unit to be sure
casters are not bent.

Visually inspect the refrigeration package,
compressor compartment housing. Be sure lines
are secure and base is still intact.

Inspect installation location behind the unit for
electrical outlet location and Nitrogen (N2).

Check for correct voltage at outlet dedicated for
the Nitrogen Beverage Dispenser.

Verify floor of install location is within 1/2” (1.3 cm)
of level front to back, side to side and all casters are
touching the floor.

Important

All plumbing must conform to local, state and national
codes.

Warning

n

The mass of this appliance will allow it to move
uncontrolled on an inclined surface. Adequate means
must be provided to prevent uncontrolled movement
at all times.

Check that internal connections are secure and did
not vibrate loose during shipment.

Installation location has proper ventilation where
unit has access to ambient air.

Part Number: 9290312 May/17/2016 9

Installation Section 2

D

E

A

NITROGEN REGULATOR & TANK ASSEMBLY

DANGER

Tank under high pressure. Do not drop or allow tank to
fall over. Tank must be chained and secured to prevent
movement as per OSHA requirements. Do not attempt
to handle or connect to tank unless properly trained.

Nitrogen cylinders contain high-pressure gas which can
be hazardous if not handled properly. Make sure you
READ and UNDERSTAND the following procedures for
nitrogen cylinders BEFORE installation.

Important

Use only food grade nitrogen.

1. ALWAYS connect the nitrogen cylinder to a regulator
in a dispensing system. Failure to do so could result in
an explosion with possible death or injury when the
cylinder valve is opened.

2. NEVER connect the nitrogen cylinder directly to the
product container.

3. ALWAYS follow correct procedures when cylinders are
changed.

4. ALWAYS secure the cylinder in an upright position with
a chain.

5. NEVER drop or throw a nitrogen cylinder.

6. ALWAYS keep a nitrogen cylinder away from heat.
Store extra cylinders in a cool place (preferably 70ºF).
Securely fasten with a chain in an upright position
when storing.

7. ALWAYS check the D.O.T. test date on the cylinder neck
before installation. Ask your gas supplier for D.O.T. test
requirements.

8. NEVER connect a product container unless there are
two (2) safety’s in the pressure system:

A. One (1) at or on the nitrogen regulator.
B. One (1) at or on the product coupler or in the

pressure gas line.

NITROGEN INSTALLATION/REPLACEMENT

Warning

n

Verify gauge orientation
before setting pressures!

B

100

1500

2000

1000

50

U

2500

L

R

500

USE NO OIL

LEFT

3000

psi

6

4

80

8

100

60

120

40

2

140

20

10

160

psi

LR

R

bar

150

bar

200

F

NITROGEN

NITROGEN

C

TO PRODUCT
CONTAINER

INTEGRAL SAFETY
DEVICE

1. Make sure cylinder valve “A” is closed.

2. Unscrew (counter clockwise) regulator key “B” as far out
as it will go. (The regulator is now in the off position).

3. Remove regulator from empty cylinder at “E”.

4. Remove dust cap from new cylinder at “E”. Open and
close valve “A” quickly to blow dust from outlet.

5. With cylinder valve “A” in closed position, re-attach
regulator to cylinder at “E”.

6. Open valve “A” all the way. (This is important because
this cylinder valve seals in two places).

7. Make certain outlet is closed at “C”.

8. Screw regulator key “B” in (clockwise) until required
pressure is reached “F”.

9. Open outlet valve “C”.

NOTE: Drinks will not pour if outlet valve “C” is closed.

10 Part Number: 9290312 May/17/2016

Section 2 Installation

NITROGEN CONNECTIONS & PRESSURES

1. Set inlet from food grade nitrogen tank to back of the
dispenser to 85 - 90 psi
(.586 - .621 MPa, 586 - 621 kPa, 5.86 - 6.21 bar).

Line OUT

Pressure to Unit

Line IN

N Tank Pressure

Warning

n

Line Out Pressure

Do Not exceed 90 psi

(.621 MPa, 621 kPa, 6.21 bar)

to the unit!

N2 QUICK DISCONNECT & DRAIN

Important

All plumbing must conform to local, state and national
codes.

2. Hook up nitrogen supply line to quick disconnect.

3. Run drip pan drain line and purge tube to floor drain.

Drain Line

N2 Supply

Connection

KEG & PUMP REGULATORS

Regulator 1
Keg

Regulator 2
Pump

5. Set Regulator 1- Nitrogen Tank to Coffee Keg.

• Set to 16 psi +/- 2 psi
(.110 MPa, 110 kPa, 1.10 bar).

6. Set Regulator 2- Nitrogen Tank to Nitrogenator Tank.

• Set to 34 psi +/- 2 psi
(.234 MPa, 234 kPa, 2.34 bar).

NOTE: This pressure can be no less than 32 psi
(.221 MPa, 221 kPa, 2.21 bar).

7. Once the nitrogen line is hooked up to the unit check the
pressures on the two (2) regulators in the picture above.

N2 Purge Tube

Floor Drain

4" Air Gap

NOTE: Purge tube releases under pressure, make sure it is
fastened down.

4. Ensure drain line is not kinked or otherwise blocked for
proper drainage.

Part Number: 9290312 May/17/2016 11

Installation Section 2

Keg Connections

DANGER

Never stand directly over keg when connecting,
disconnecting, or when keg is pressurized.

Important

Only use AEB Kegs. Available from Manitowoc FoodService..

8. First connect the Black quick connect line to the
connection labeled OUT on the coffee keg. This supplies
coffee to Tap 1 and 2.

Important

Hook the OUT line up to the coffee keg first, this helps prime
the system once the nitrogen is connected to the tank.

Connection

IN

OUT
Connection

Nitrogenator

Nitrogen tank is equipped with a pressure relief valve that
will automatically purge when pressure exceeds operating
limit of the system. When valve relieves there may be a
quick pressure relief sound heard coming from cabinet.
Relief sound shouldn’t last more than a few seconds and
may not be noticeable on an audible level.

Pressure
Relief Valve

9. Connect the White quick connect line second to the
connection labeled IN on the coffee keg. This line supplies
Nitrogen into tank. See "Keg Change" on page 16 and

"Priming the System" on page 16

12 Part Number: 9290312 May/17/2016

Section 2 Installation

PRIMARY

NITROGENATED COFFE

E

PLUMBING DIAGRAM

REGULATOR

85 - 90 PSI

Do Not exceed 90 PSI

EXTERNAL N

2

TANK

EXTERNAL N

REGULATOR

TANK

2

SHUT OFF
VALVE

PRESSURE

DRAIN

REGULATOR 1

TANK TO COFFEE KEG

N

2

SWITCH

FILTER/

T-FITTING

34 PSI +/- 2 PSI

PRV

16 PSI +/- 2 PSI

N2 TANK TO NITROGENATOR

REGULATOR 2

NITROGENATED COFFEE

KEG

NON-NITROGENATED

STRAINER

T-FITTING

COFFEE

NON-NITROGENATED

COFFEE

NON-NITROGENATED

COFFEE

SOLENOID

VALVE

NON-NITROGENATED

COFFEE

LIQUID

DETECTION

DEVICE /
SENSOR

TAP 1

PLAIN

COFFEE

TAP 2

NITRO

COFFE

PRV =

N

2

NITOGENATOR

TANK

PRESSURE

RELIEF
VALVE

PUMP

COFFEE

E

NON-NITROGENATED

NITROGENATED COFFEENITROGENATED COFFEE

COFFEE

NON-NITROGENATED

NEEDLE

VALVE

SOLENOID

VALVE

NITROGENATED COFFEE

Part Number: 9290312 May/17/2016 13

Installation Section 2

DOOR HINGE REVERSAL

Instructions for installations that require the cabinet door to
be reversed.

1. Use a screwdriver to remove the bottom hinge pin.

NOTE: Lock-tight was used during factory installation, so
extra force may be required.

2. Tilt door out from bottom and slide top pin out of the
hinge bracket.

3. Remove top hinge pin from door.

4. Use a putty knife or similar tool to remove both plugs
from door to expose alternate hinge pin locations and
re-install the plugs in original hinge pin locations.

5. Install top hinge pin on new hinge side.

6. Remove top and bottom hinge brackets from cabinet
face.

7. Locate etch marks on the opposite side of cabinet face
and drill 1/8” holes.

8. Install top and bottom hinge brackets in new locations.

9. Slide top door hinge pin into top hinge bracket and
close door onto cabinet face.

10. Install bottom hinge pin through hinge bracket and into
door.

14 Part Number: 9290312 May/17/2016

Machine Operation

Section 3

Operation

CONTROLS/PROGRAMMING/SETTINGS

After the unit is connected to power it will automatically
begin operating. With the doors closed, the temperature of
the cabinet should reach 36°F to 40°F (2°C to 4°C) in about
one hour.

A thermostat located in the evaporator housing on interior
rear of the unit, controls the temperature in the unit. The
factory setting for the control is 4 and maintains about 38°F
(3°C) in the box. Set toward 1 for higher temperatures and
toward 7 for lower temperatures.

TAPS

For best performance do not allow both taps to remain fully
opened for extended periods of time.

TAP #1 TAP #2

• Tap 1 - Regular Coffee

• Tap 2 - Nitrogenized Coffee

Pouring

If coffee does not pour out of taps items to check are;

1. Verify connections to keg and if coffee keg is empty. If
keg is empty follow replacement steps on page 12.

Refrigerators defrost automatically with every cycle of the
compressor. The water generated is routed to a pan on the
rear of the unit and is evaporated by the heat given off by
the compressor.

NOTE: During normal operation the evaporator fan may
cycle and/or pulse independently of the compressor.

EVAPORATOR FAN OPERATION

Cooling Cycle Defrost Cycle

Model

ND21TS00

(R404A)

CompressorONCompressor

OFF

ON ON ON

Compressor

ON

2. If keg has coffee check nitrogen level at nitrogen tank.

• If outlet pressure drops below 85 - 90 PSI or
tank volume is low replace tank and connect as
shown on page 11.

Part Number: 9290312 May/17/2016 15

Operation Section 3

KEGS

When coffee keg is empty disconnect the keg from the
unit and pull the relief valve open to relieve pressure from
the keg. Repeat "Keg Connections" on page 12 when
hooking up a full keg off coffee.

Warning

n

Do not attempt to remove lid until all pressure has been
relieved from keg.

Keg Change

Important

Make sure new coffee keg has been chilled to the
operating temperature range of 45° - 36°F (7° - 2°C) before
use or may cause foaming in the system.

PRIMING THE SYSTEM

NOTE: Priming is always required during keg change.

1. Press the Prime/Clean button, located in the upper left
corner of the refrigeration cabinet, once to prime the coffee
line. The LED around the button will flash ON once, then
OFF signifying that the Prime function has been activated.

2. The pump will run for up to twenty (20) seconds while
priming.

3. Once the system is primed it is ready to pour drinks.

4. Close cabinet door and unit is ready for use.

1. Disconnect the GAS IN (grey) fitting from the keg.

2. Leave the COFFEE OUT (black) fitting connected to the keg.

3. Pull up on the ring on top of the keg to vent the nitrogen
from the keg and the system plumbing shown above.

NOTE: Hold the ring up until the system is fully vented (hissing
gas stops).

4. Disconnect the COFFEE OUT (black) fitting from the keg
and remove the keg.

5. Place new keg in cabinet

6. Connect the COFFEE OUT (black) fitting to the keg first then
connect the GAS IN (grey) fitting.

7. Open the Plain Coffee Tap (Tap 1) and see if beverage
comes out, if not, prime system. See "Priming the System" on

page 16

CLEARING ERROR CODE

Important

If priming fails to complete the system will go into an
error state and the Prime/Clean button LED will blink
continuously until the error is cleared.

To clear the error, press and hold the Prime/Clean button
until the LED around the button turns OFF.

Once the error has been cleared, press and release the
Prime/Clean button again to prime the unit.

16 Part Number: 9290312 May/17/2016

Cleaning & Sanitizing

Section 4

Maintenance

NOTE: Cleaning items other than the nozzle cleaning hoses
are not supplied with the N2Fusion™ Nitrogen Beverage
Dispenser.

DANGER

It is the responsibility of the equipment owner to perform a
Personal Protective Equipment Hazard Assessment to ensure
adequate protection during maintenance procedures.

DANGER

Failure to disconnect the power at the main power supply
disconnect could result in serious injury or death. The
power switch DOES NOT disconnect all incoming power.

DANGER

Disconnect electric power at the main power disconnect
for all equipment being serviced. Observe correct polarity
of incoming line voltage. Incorrect polarity can lead to
erratic operation.

Important

When cleaning interior and exterior of unit, care should
be taken to avoid electrical components and wiring. Keep
water and/or cleaning solutions away from these parts.

Warning

n

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

Warning

n

Never Use Steel Pads, Wire Brushes or Scrapers!

Important

Never use a high-pressure water jet for cleaning or hose
down or flood interior or exterior of units with water. Do
not use power cleaning equipment, steel wool, scrapers
or wire brushes on stainless steel or painted surfaces..

MAINTENANCE SCHEDULE

Maintenance Daily Weekly Monthly After Prolonged

Shutdown

Interior X X X

Gasket X X X X

Exterior X X X

Drain X X X

Condenser Coil X X X

Casters X X X

At Start-up

Part Number: 9290312 May/17/2016 17

Maintenance Section 4

GENERAL CLEANING

Interior Cleaning

Notice

When cleaning interior and exterior of unit, care should
be taken to avoid the rear power cord. Keep water and/or
cleaning solutions away from electrical parts.

Important

Never use a high-pressure water jet for cleaning or hose
down or flood interior or exterior of units with water. Do
not use power cleaning equipment, steel wool, scrapers
or wire brushes on stainless steel or painted surfaces.

The interior can be cleaned using soap and warm water. If
this isn’t sufficient, try ammonia and water or a nonabrasive
liquid cleaner.

Exterior Cleaning

Caution

,

Never use an acid-based cleaning solution! Many food
products have an acidic content, which can deteriorate
the finish. Be sure to clean the stainless steel surfaces of
ALL food products.

Clean the area around the unit as often as necessary to
maintain cleanliness and efficient operation.

Wipe gasket and surfaces with a damp cloth rinsed in water
to remove dust and dirt from the outside of the unit. Always
rub with the “grain” of the stainless steel to avoid marring
the finish. If a greasy residue persists, use a damp cloth
rinsed in a mild dish soap and water solution. Wipe dry with
a clean, soft cloth.

Never use steel wool or abrasive pads for cleaning. Never
use chlorinated, citrus based or abrasive cleaners.

Stainless steel exterior panels have a clear coating that
is stain resistant and easy to clean. Products containing
abrasives will damage the coating and scratch the panels.

Daily cleaning may be followed by an application of
stainless steel cleaner which will eliminate water spotting
and fingerprints. Early signs of stainless steel breakdown
are small pits and cracks. If this has begun, clean thoroughly
and start to apply stainless steel cleaners in attempt to
restore the steel.

CLEANING SUPPLIES

1. Approved cleaner and sanitizer.

• An approved cleaner, such as Urnex® Cafiza®
Espresso Machine Cleaner mixed one (1)
teaspoon per gallon, must be used.

• Cleaner to be compatible with equipment
metals and materials.

• Use a sanitizer capable of providing 400 ppm
Quat, such as Urnex® Complete Cafe’™ mixed ½
oz per gallon.

Warning

n

Powdered cleaners and sanitizers must be thoroughly
mixed into water/solution to prevent crystals from
remaining and causing damage to system components.

2. Three (3) clean and sanitized three (3) gallon pressure kegs.

• One (1) for cleaning solution.

• One (1) for sanitizing solution.

• One (1) for warm rinse water.

18 Part Number: 9290312 May/17/2016

Section 4 Maintenance

3. Towels, wipes, brushes, and buckets.

• Use clean towels for any spilled fluid during
cleaning process.

• Small cleaning wipes for cleaning top, sides, and
interior of unit.

• A small brush is useful to clean keg connections

• Small bucket should be available for dipping
keg connections into sanitizer.

4. Spray bottles and PPE (gloves, goggles).

Warning

n

When in contact with cleaning and sanitizing solution
chemicals gloves and safety glasses are recommended.

• Use spray bottle when wiping down surfaces
and other exterior parts.

• Gloves and eye protection should be worn to
lessen chance of irritation or injury.

Part Number: 9290312 May/17/2016 19

Maintenance Section 4

LEVEL 1  DAILY CLEANING

Cleaning

1. Put on gloves and safety goggles before cleaning unit.

2. Spray each tap with cleaner, wipe down, look for
obstructions, and check for proper flow.

3. Drain gate should be removed, interior of drain pan
cleaned, and wiped dry.

4. Wash drain gate in sink and allow to dry.

5. Spray top surface of unit with cleaner and wipe dry.

6. Check interior for any spills or drips, sprayed with
cleaner and wiped down.

Sanitizing

1. Add sanitizer to spray bottle mixed to 400 ppm Quat
concentration and spray all external surfaces. Allow to
remain for 15 minutes, or as directed by manufacturer,
before wiping off.

2. Spray each nozzle and allow to air soak for 15 minutes,
or as directed by manufacturer, before wiping off.

3. Spray internal surfaces and allow to air soak for 15 minutes,
or as directed by manufacturer, before wiping off.

Caution

,

Attention and care should be used to avoid spraying
any electrical component (fans, thermostat and sensor
connections) with any of the fluids.

Rinsing

1. Wipe down each nozzle with wet clean towel and
allow to air dry. If Keg was disconnected and cleaned/
sanitized, wipe down connectors with clean wet towel
and allow to air dry.

Inspect In-line Strainer

1. Locate the in-line coffee strainer on the celling of the
refrigeration cabinet.

Caution

,

Attention and care should be used to avoid spraying
any electrical component (fans, thermostat and sensor
connections) with any of the fluids.

7. Pull unit out and clean around the cabinet.

20 Part Number: 9290312 May/17/2016

2. Visually inspect the clear strainer bowl for debris and
coffee grinds.

3. If debris is visible depressurize the system then;

• Unscrew and remove the clear bowl.

• Remove and rinse the strainer mesh to remove the
debris.

• Then reassemble the bowl with mesh back in

Section 4 Maintenance

place. LEVEL 2  WEEKLY CLEANING

Coffee Delivery System Cleaning & Sanitizing

1. Disconnect coffee keg and set aside.

Clean In-line Strainer

2. Locate the in-line coffee strainer on the celling of the
refrigeration cabinet. (See illustration for “Inspect In­line Strainer”)

3. Depressurize the system then;

• Unscrew and remove the clear bowl.

• Remove and rinse the strainer mesh to remove
the debris.

• Then reassemble the bowl with mesh back in
place.

4. Mix proper concentration of cleaning solution in one of
the three (3) gallon kegs.

5. Connect the inlet and outlet keg connectors of unit to
cleaning solution keg.

6. Press and release the Prime/Clean button to prime the
system with cleaning solution. The LED around the
button will flash ON then OFF.

Cleaning Button

NOTE: Cleaning button is located inside base cabinet in
upper left corner.

7. Place a clean five (5) gallon bucket on the floor in front of unit.

8. Place clear nozzle cleaning hose over nozzles of both
the (plain and nitrogen coffee) taps and place other
end of clear hoses in the five (5) gallon bucket.

Part Number: 9290312 May/17/2016 21

5 Gallon BucketDrain Hoses

Maintenance Section 4

9. Open both the (plain and nitrogen coffee) taps. 10. Press and hold the Prime/Clean button until the LED around
the button turns on to place the unit into cleaning mode.

• Cleaning button will illuminate blue in color around the
button indicating unit is in cleaning mode.

• Button Illuminations and modes:

• To abort cleaning mode press and hold the cleaning
button until the LED around the Prime/Clean button
turns OFF. This exits cleaning mode into keg change
mode and LED will no longer be illuminated.

NOTE: Priming is required after aborting cleaning or clearing an
error. See “Priming the System” on page 16

Important

If cleaning mode is accidentally aborted or aborted because
of an issue/reason, then the cleaning process will need to
start over from the beginning after a two (2) minute wait.

NOTE: If an error is encountered at any time during cleaning
process the cleaning button will blink ON/OFF rapidly indicating
unit is in an error state and cleaning process has stopped.

To exit error state close both taps then press and hold the
Clean/Prime button until the LED around the button turns OFF
to clear error state and exit into keg change mode.

Once error state is cleared the cleaning process can be started
over after a two (2) minute wait.

NOTE: Priming is required after aborting cleaning or clearing an
error. See “Priming the System” on page 16

11. Unit will automatically run through cleaning process.

12. Towards the end of cleaning process there will be a system
purge process and once bubbles are seen coming from five
(5) gallon bucket, close plain coffee tap.

13. Once cleaning process is complete the LED will not be
illuminated, which indicates cleaning is complete and both
product taps should be closed.

14. Disconnect cleaning solution keg and set aside.

15. Mix proper concentration of approved sanitizing solution (400
ppm Quat concentrate) in the second three (3) gallon keg.

16. Connect the inlet and outlet keg connectors of unit to
sanitizing solution keg.

17. Press and release the Prime/Clean button to prime the
system with cleaning solution. The LED around the
button will flash ON then OFF.

18. Empty the five (5) gallon bucket and place ends of clear
nozzle drain hoses back into bucket.

19. Repeat Step 9 and 10, again unit will automatically run
through sanitizing process.

22 Part Number: 9290312 May/17/2016

Section 4 Maintenance

20. Towards the end of sanitizing process there will be
a system purge process and once bubbles are seen
coming from five (5) gallon bucket, close plain coffee tap.

21. Once sanitizing process is complete cleaning button
will not be illuminated, which indicates sanitizing is
complete and both product taps should be closed.

22. Disconnect sanitizer solution keg and set aside.

23. Mix proper concentration of approved sanitizing solution (400
ppm Quat concentrate) in the second three (3) gallon keg.

24. Connect the inlet and outlet keg connectors of unit to
the sanitizer solution keg.

25. Press and release the Prime/Clean button to prime the
system with cleaning solution. The LED around the
button will flash ON then OFF.

26. Empty the five (5) gallon bucket and place ends of clear
nozzle drain hoses back into bucket.

27. Repeat Step 9 and 10, again unit will automatically run
through sanitizing process.

28. Towards the end of rinse process there will be a system
purge process and once bubbles are seen coming from
five (5) gallon cleaning bucket, close plain coffee tap.

29. Once rinsing process is complete the LED will not be
illuminated, which indicates rinsing is complete and
both product taps should be closed.

30. Disconnect warm rinse water keg and set aside.

31. Disconnect clear drain hoses from tap nozzles, empty
five (5) gallon catch bucket and store for use during
next weekly cleaning.

32. Complete all weekly cleaning task before reconnecting
coffee keg to unit.

Keg Connector Cleaning

1. If keg is not disconnected, then do so and set keg aside.

Warning

n

NEVER ATTEMPT TO REMOVE KEG LID WITHOUT FIRST
DE-PRESSURIZING KEG!

2. Spray cleaner on one keg connector and wipe down
with clean towel.

3. If required a brush can be used for stains or residue
build-up.

4. Repeat Step 1 and 2 for other keg connectors.

Keg Connector Cleaning & Sanitizing

• Frequency: every week or as required.

1. Mix proper concentration of approved sanitizing
solution (400 ppm Quat concentration) in clean bucket
and place keg connectors into bucket and allow to soak
for 15 minutes , or as directed by manufacturer.

NOTE: An alternative method is to heavily spray both
of the connectors with sanitizing solution and allow
sanitizer to remain for fifteen (15) minutes or as directed by
manufacturer.

Important

Kegs used for cleaning, sanitizing solutions and rinse
water should be emptied and cleaned before reuse.

Part Number: 9290312 May/17/2016 23

2. Once keg connectors are cleaned and sanitized each
one should be immersed into clean water for at least
five (5) minutes for rinsing.

Maintenance Section 4

Interior/Exterior Cleaning, Sanitizing & Rinse

1. Put on gloves and safety goggles before cleaning unit.

2. Spray each tap with cleaner, wipe down, look for
obstructions, and check for proper flow.

3. Drain gate should be removed and interior of drain pan
cleaned and wiped dry.

4. Wash drain gate in sink and allow to dry.

5. Spray top surface of unit with cleaner and wipe dry.

6. Check interior for any spills or drips, spray with cleaner
and wiped down.

DO NOT spray

fluids in

these areas/

components

Component

Splash Box

Connect Keg & Prime System

Important

Make sure new coffee keg has been chilled to the
operating temperature range of 45° - 36°F (7° - 2°C) before
use or may cause foaming in the system.

7. Connect the COFFEE OUT (black) fitting to the keg first then
connect the GAS IN (grey) fitting.

8. Prime if necessary. See “Keg Change” on page 16 &

“Priming the System” on page 16 for complete keg
change details.

9. Close cabinet door and unit is ready for use.

Caution

,

Attention and care should be used to avoid spraying
any electrical component (fans, thermostat and sensor
connections) with any of the fluids.

24 Part Number: 9290312 May/17/2016

Section 4 Maintenance

DOORS/HINGES

Over time and with heavy-use doors, the hinges may
become loose. If this happens, tighten the screws that
mount the hinge brackets to the frame of the unit. Loose
or sagging doors can cause the hinges to pull out of the
frame, which may damage both the doors and the hinges.
In some cases this may require qualified service agents or
maintenance personnel to perform repairs.

Door Adjustment

If the door needs lowering at the handle, use a 5/16” (8mm)
wrench to loosen the hinge screws and install a spacer
outside of the hinge. Tighten the screws.

If the door needs to be higher at the handle, use a 5/16”
(8mm) wrench to loosen the hinge screws and install a
spacer inside of the hinge. Tighten the screws.

Part Number: 9290312 May/17/2016 25

Section 5

Troubleshooting

Troubleshooting Charts

DISPENSING ISSUES

Problem Cause Correction

Product does not dispense Product keg is empty Change out the product keg. See “Keg Change”

on page 16

Nitrogen tank is empty Change out the Nitrogen tank. See “Nitrogen

Installation/Replacement” on page 10

Debris in filter Clean filter. See “Clean In-line Strainer” on page 21

Product line is not primed Press the clean button for one second to prime

system

Stuck in clean cycle Is light illuminated , press & hold till it is not.

Nitrogen Supply Tank OFF Turned OFF when tank was swapped/installed. Check Nitrogen tank. See “Nitrogen Installation/

Tank incorrectly shut OFF during keg change.

Coffee does not dispense Power Is there power to the unit? Plug in unit.

Low / No Nitrogen pressure. Open Nitrogen tank valve, adjust pressure,

The coffee seems to be watery Is the cleaning / purge light button on Finish cycle & replace the product keg. See “Keg

The coffee is warmer than expected Verify the thermometer reads below 50°F Refer to refrigeration section checklist. See

“Controls/Programming/Settings” on page 15

Coffee keeps leaking from the clear

drain hose

There is a hissing sound coming from

the nitrogen tank

The nitrogenator tank relief valve is stuck open Close or replace.

Regulator nut Tighten regulator nut. See “Nitrogen Regulator

Check for missing washer inside of regulator nut.

Replacement” on page 10

or change N2 supply tank. See “Nitrogen

Installation/Replacement” on page 10

Change” on page 16

and “Keg Change” on page 16

& Tank Assembly” on page 10

There is a puddle of product on the floor Drain tube Check to see of cabinet drain is in the floor drain.

See “N2 Quick Disconnect & Drain” on page 11

The drain pan under the taps has

standing coffee

Product does not appear to be

nitrogenized

Product flowing slow from valve Flow control collar on valve out of adjustment Adjust collar to achieve desired flow rate

Foam dispensing from valve Cold brew temp above 45 degrees Attach keg of cold brew that is chilled to below

Cleaning button blinking ON/OFF rapidly Unit is in an error state and cleaning process has

Pinched or clogged drain line Clean out drain line.

Replace drain line.

Nitro Coffee nozzle does not have diffuser

installed

Debris in nozzle Remove nozzle and clean.

Debris in filter Remove and Clean Filter.

Check Nitro pressure gauge Make sure pressures are set correctly. See

Nitrogen pump not running Call for service

stopped., keg empty.

System fails to prime.

Pump runs continuously for >5 minutes.

Check cold brew nozzle to see if nozzles were
reversed. Nozzle with diffuser disc is intended

to be installed on the Nitro side of the tower.

“Nitrogen Connections & Pressures” on page 11

and “Keg & Pump Regulators” on page 11

45°F. See “Keg Change” on page 16

Hold Prime/Clean button until the LED turns

OFF. (See “Clearing Error Code” on page 16)

Replace keg if needed then press and release

the Prime/Clean button again to prime the new

keg. Cleaning process can be started over after

a two (2) minute wait.

Section 5 Troubleshooting

REFRIGERATOR CABINET ISSUES

Problem Cause Correction

Cabinet not running Fuse blown or circuit breaker tripped. Replace fuse or reset circuit breaker.

Power cord unplugged. Plug in power cord.

Thermostat set too high. Set thermostat to lower temperature.

Main power switch turned off. Turn main power switch on.

Cabinet in defrost cycle. (Freezer models) Wait for defrost cycle to finish.

Condensing unit runs for long periods

or continuously

Cabinet temperature is too high Thermostat set too high. Set thermostat to lower temperature.

Excessive amount of warm product placed in

cabinet.

Prolonged door openings or door(s) ajar. Make sure door(s) are closed when not in use.

Door gasket(s) not sealing properly. Check gasket condition. Adjust door or replace

Dirty condenser coil. Clean the condenser coil.

Evaporator coil iced over. "Turn unit off and allow coil to defrost. Make

Poor air circulation in cabinet. Re-arrange product to allow proper air

Exterior thermometer is out of calibration. Re-calibrate thermometer.

Allow adequate time for product to cool down.

Avoid prolonged door openings.

gasket if necessary.

sure thermostat is not set too cold.

Also, check gasket condition."

circulation.

Excessive amount of warm product placed in

cabinet.

Prolonged door openings or door(s) ajar. "Make sure door(s) are closed when not in use.

Dirty condenser coil. Clean the condenser coil.

Evaporator coil iced over. "Turn unit off and allow coil to defrost. Make

Cabinet is noisy Loose part(s). Locate and tighten loose part(s).

Refrigerator is freezing product Thermostat is set too low. Set thermostat to higher temperature.

Dirty condenser coil. Clean the condenser coil.

Not enough cabinet clearance for proper

refrigeration system operation.

Compressor will not start Low voltage to cabinet. Check and correct incoming voltage to

Allow adequate time for product to cool down.

Avoid prolonged door openings."

sure thermostat is not set too cold.

Also, check gasket condition."

Move cabinet or make other adjustments to

gain proper cabinet clearances.

cabinet.

Part Number: 9290312 May/17/2016 27

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®

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Part Number: 9290312 May/17/2016

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