Multiplex 2803A04 Installation Manual

Models 2803, 11M, 44M, 50M

Post-Mix Soda & SC180, SC340,

SC1000, & SC2000 Super-Chill

Refrigeration Units

Installation, Use & Care Manual

This manual is updated as new information and models are released.

Visit our website for the latest manual. www.manitowocfsg.com

America’s Quality Choice in Refrigeration

Part Number 000003912 2/10

Safety Notices

!

Warning

!

Caution

Important

!

Caution

Important

!

Warning

As you work on Manitowoc equipment, be sure to pay
close attention to the safety notices in this manual.
Disregarding the notices may lead to serious injury and/
or damage to the equipment.

Throughout this manual, you will see the following types
of safety notices:

Text in a Warning box alerts you to a potential
personal injury situation. Be sure to read the
Warning statement before proceeding, and work
carefully.

Text in a Caution box alerts you to a situation in
which you could damage the equipment. Be sure to
read the Caution statement before proceeding, and
work carefully.

Procedural Notices

As you work on Manitowoc equipment, be sure to read
the procedural notices in this manual. These notices
supply helpful information which may assist you as you
work.

Throughout this manual, you will see the following types
of procedural notices:

Read These Before Proceeding:

Proper installation, care and maintenance are
essential for maximum performance and trouble-free
operation of your Manitowoc equipment. Read and
understand this manual. It contains valuable care
and maintenance information. If you encounter
problems not covered by this manual, do not
proceed, contact Manitowoc Foodservice Group.
We will be happy to provide assistance.

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

PERSONAL INJURY POTENTIAL

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

NOTE: SAVE THESE INSTRUCTIONS.

Text in an Important box provides you with
information that may help you perform a procedure
more efficiently. Disregarding this information will not
cause damage or injury, but it may slow you down as
you work.

NOTE: Text set off as a Note provides you with simple,
but useful, extra information about the procedure you
are performing.

We reserve the right to make product improvements at any time.

Specifications and design are subject to change without notice.

Section 1
General Information

Section 2
Installation

Table of Contents (continued)

Read This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Unit Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Model Numbers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

How to Read a Model Number. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Special Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Attention: Marine Installations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Outdoor Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Serial Plate Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Dimensions and Clearances — All Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Remote Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Blade Tower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Safe Installation Dos and Don’ts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Location Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Soda Refrigeration Unit “Quick-Pick” Selection Chart . . . . . . . . . . . . . . . . 2-4

Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Kitchen Equipment Installer Representative Responsibilities . . . . . . . . . . . 2-5

Requirements for Post Mix Refrigeration Units . . . . . . . . . . . . . . . . . . . . . . 2-5

Installer Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Minimum Circuit Ampacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Electrical Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Grounding Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Part Number 000003912 2/10

i

Table of Contents (continued)

Plumbing/Water Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Plumbing Potable Water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Plumbing Requirements – General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Water Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Plumbing Circuit Diagrams — Model 2803 . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Plumbing Circuit Diagrams — Model 11M Root Beer . . . . . . . . . . . . . . . . . 2-10

Plumbing Circuit Diagrams — Model 44M . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

Plumbing Circuit Diagrams — Model 50M . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

Refrigeration Unit Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20

Unpacking and Inspecting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20

Unit Installation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20

Positioning of Refrigeration Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21

Equipment Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21

Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21

Tower Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21

Conduit Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22

Proper Use of John Guest Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22

Connecting Supply Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23

Routing Insulated Conduit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25

Connecting Insulated Conduit at the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25

Connecting Insulated Supply Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25

Insulating Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28

Aeroquip Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28

Condenser and Pre-charged Lines Installation . . . . . . . . . . . . . . . . . . . . . . . . . 2-28

Remote Condenser Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28

Pre-charged Refrigeration Line Requirements . . . . . . . . . . . . . . . . . . . . . . 2-29

Installing the Multiplex Remote Condenser . . . . . . . . . . . . . . . . . . . . . . . . . 2-29

Connecting the Pre-charged Refrigeration Lines . . . . . . . . . . . . . . . . . . . . 2-30

Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-30

Testing CO

Testing Syrup Circuit (5 gallon tanks only) . . . . . . . . . . . . . . . . . . . . . . . . . 2-30

Preparing Ice Bank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-30

Building an Ice Bank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-30

Installation Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-31

Circuit for Leaks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-30

2

ii Part Number 000003912 2/10

Section 3
Operation

Table of Contents (continued)

Typical System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

How the Multiplex Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Differences Between the TS & SS Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Water Manifold TS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Electrical TS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Water Bath Access SS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Water Bath Access TS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Service Access SS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Service Access TS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Start-up (Non-ERC). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Placing Equipment in Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Placing the Carbonation System in Operation . . . . . . . . . . . . . . . . . . . . . . 3-5

Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Pre-mix Refrigeration Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Equipment Setup and Close Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Equipment Setup Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Equipment Close Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Section 4
Maintenance

Sanitizing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Back-flow Preventer Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Shipping, Storage and Relocation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Section 5
Before Calling for Service

Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Beverage System Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Bag-In-Box System Sanitation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Figal Beverage System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Part Number 000003912 2/10

iii

Table of Contents (continued)

THIS PAGE INTENTIONALLY LEFT BLANK

iv Part Number 000003912 2/10

Section 1 General Information

!

Warning

B - Reserve Ice Bank
T - TUV approved

carbonator tank

Q/T - Quick Trip

04 - R404a refrigerant

Model Prefix Model Suffix

Model Base

11M A 04 B

A - Air-cooled
AX - Air-cooled, international
R - Remote
RX - Remote, international
W - Water-cooled
WX - Water-cooled, international

Condenser

Type

2803 & SC180 - 1/3 hp
11M & SC340 - 1/2 hp
44M & SC1000 - 1 hp
44E - 1 hp, TUV Approved
50M & SC2000 - 2.2 hp

Section 1

General Information

Read This Manual

Manitowoc Food Service 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 5 within this manual
for service assistance.

If you cannot correct the service problem, call your
Manitowoc Beverage Equipment (MBE) Service Agent
or Distributor. Always have your model and serial
number available when you call.

Your Service Agent ____________________________

Service Agent Telephone Number _________________

Your Local MBE Distributor ______________________

Distributor Telephone Number ____________________

Model Number _______________________________

Serial Number ________________________________

Installation Date ______________________________

Unit Inspection

Model Numbers

This manual covers the following models:

Post Mix Soda Refrigeration Unit

2803A04, 2803AX04, 2803A04

11MA04, 11MAX04, 11MA04,

44MA04, 44MAX04T, 44MW04, 44MWX04T,

44MR04, 44MRX04T, 44EAX04T, 44EWX04T,

50MA04, 50MAX04, 50MR04, 50MRX04, 50MW04,

50MWX04, 50MR04Q/T, SC180A, SC180AX,

SC180R, SC180RX, SC180W, SC180WX, SC340A,

SC340AX, SC340R, SC340RX, SC340W,

SC340WX, SC1000A, SC1000AX, SC1000R,

SC1000RX, SC1000W, SC1000WX, SC2000A,

SC2000AX, SC2000R, SC2000RX, SC2000W,

SC2000WX

How to Read a Model Number

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.

PERSONAL INJURY POTENTIAL

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

Part Number 000003912 2/10 1-1

General Information Section 1

!

Warning

Accessories

Depending on store type and location, various optional
equipment (such as CO

Panel, water filter kit, water

2

booster kit, etc.) may be added to this system. Install
and connect any optional equipment in the desired
location according to the installation instructions
provided with these kits/equipment.

Special Applications

ATTENTION: MARINE INSTALLATIONS

This unit is for use on vessels over 66 ft (20 m) in
length. This unit must not be installed in the engine
space of a gasoline-powered ship.

NOTE: This unit must be secured to the vessel during
installation. Models with part numbers beginning with the
letters TS are NOT marine listed.

OUTDOOR APPLICATIONS

TS Multiplex Beverage Recirculating units are approved
and listed by Underwriters Laboratories (UL). However
they are not UL approved for weather exposure
applications. These units must be installed in areas
where adequate protection from the elements is
provided, all other models are ETL listed.

Specifications

Model

2803 One 6-valve soda tower Bag-in-Box

11M One 6-valve soda tower or up

44M Up to two 8-valve soda towers Bag-in-Box
50M Up to two 8-valve soda towers Bag-in-Box

Number of Dispensing

Heads

to three 2-valve root beer

towers

NOTE: Super-Chill units do not apply to the above table,
they are only used to chill large amounts of water.

Typ e o f

Container

Bag-in-Box

1-2

Part Number 000003912 2/10

Section 1 General Information

Serial Plate Location

Warranty Information

Consult your local MBE Distributor for terms and
conditions of your warranty. Your warranty specifically
excludes all beverage valve brixing, general
adjustments, cleaning, accessories and related
servicing.

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

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

Please contact your local MBE distributor for return
procedures.

Part Number 000003912 2/10 1-3

General Information Section 1

THIS PAGE INTENTIONALLY LEFT BLANK

1-4

Part Number 000003912 2/10

Section 2

Wall

6" (15.2 cm)

Diameter Chase minimum

3-7/8" (9.8 cm) Diameter

(4-7/8" [12.4 cm] Diameter

on Model 50)

Air Flow

Control

Switches

18"
(45.7 cm)
minimum

J

Electrical

Junction Box

6" (15.2 cm) minimum

12"
(30.5 cm)
minimum

Wall

Wall

Top View

Front ViewSide View

P

Wall

Electrical

Junction Box

Incoming Water

Line

Incoming CO

2

Supply Line

Incoming Syrup

Supply Lines

Drain Connection

W

Ceiling

Wall

18" (45.7 cm)

minimum

I

H

CO2 Regulator

Panel (Optional)

N

Drain Connection

Floor drain should be located

within 6 ft (183 cm) of unit

Wall

Conduit to

Dispensing Towers

D

Water Condenser Connections

(Models 44 and 50 only)

K

Incoming Water

Connection

Drain Connection

L

M

Installation

General

• Refrigeration units require stand or 6" (15.2 cm) legs. Refrigeration unit
cannot be placed directly on floor.

Dimensions and Clearances — All Models

• Conduit can be run through floor or ceiling chase.

• Syrup supply can be located on stand or adjacent to refrigeration unit.

Model W D H

2803 &
SC180

11M &

SC340

44M &

SC1000

50M &

SC2000

27-3/4"

(70.5 cm)

35-1/2" (90.2

cm)

39-3/4"

(101 cm)

42-1/4"

(107.3 cm)

16-1/4"

(41.3 cm)

18-1/2" (47

cm)

24-3/4"

(62.9 cm)

28-1/4"

(71.8 cm)

18-3/4"

47.6 cm)

21-3/4"

(55.2 cm)

28-1/4"

(72.4 cm)

32-1/4"

(81.9 cm)

I

(with stand)

— ————19-3/4"

54"

(137.2 cm)

60-3/4"

(154.3 cm)

66-3/4"

(169.5 cm)

JKLMNP

11"

(28 cm)

11"

(28 cm)

11"

(28 cm)

12"

19"

19"

(48.2 cm)

———5"

3-1/2"

(8.9 cm)

4"

(10.2 cm)

30.5 cm)4"(10.2 cm)6"(15.2 cm)

(48.2 cm)

(50.2 cm)

(12.7 cm)

8-1/2"

(21.6 cm)

5-1/2"

(14.0 cm)

9"

(22.9 cm)

12"

(30.5 cm)

14"

(35.6 cm)

Part Number 000003912 2/10 2-1

Installation Section 2

OPTIONAL

38.00" (96.52 cm)

34.00" (86.36 cm)

30.00" (76.20 cm)

29.50"

(74.93 cm)

29.16"

(74.06 cm)

6.00"

(15.24 cm)

3.50"

(8.89 cm)

4.00"

(10.16 cm)

14.62"

(37.13 cm)

6.50"

(16.51 cm)

OPTIONAL

20.00" (50.80 cm)

16.00" (40.64 cm)

12.00" (30.48 cm)

1.50"

(3.81 cm)

27.94"

(70.97 cm)

.75"

(1.9 cm)

1.75"

(4.4 cm)

5"

(12.7 cm)

7.39"

(18.8 cm)

3" (7.6 cm)

3.29" (8.4 cm)

11.86" (30.1 cm)

9.68" (24.6 cm)

17.3"

(43.9 cm)

10.75"

(27.3 cm)

4.88"

(12.4 cm)

REMOTE CONDENSER

BLADE TOWER

2-2

Part Number 000003912 2/10

Section 2 Installation

!

Warning

Safe Installation Dos and Don’ts

Read the following warnings before beginning an
installation. Failure to do so may result in possible
death or serious injury.

• DO adhere to all National and Local Plumbing and
Electrical Safety Codes.

• DO turn OFF incoming electrical service switches
when servicing, installing, or repairing equipment.

• DO check that all flare fittings are tight. This check
must be performed with a wrench to ensure a quality
seal.

• DO inspect pressure on regulators before starting up
equipment.

• DO protect eyes when working around refrigerants.

• DO use caution when handling metal surface edges
of all equipment.

• DO handle CO
Secure cylinders properly against abrasion.

cylinders and gauges with care.

2

• DO NOT exhaust CO

gas (example: syrup pump)

2

into an enclosed area, including all types of walk-in
coolers, cellars, and closets.

• DO NOT throw or drop a CO

cylinder. Secure the

2

cylinder(s) in an upright position with a chain.

• DO NOT connect the CO

cylinder(s) directly to the

2

product container. Doing so will result in an explosion
causing possible death or injury. It is best to connect
the CO

• DO NOT store CO

cylinder(s) to a regulator(s).

2

cylinders in temperature above

2

125°F (51.7°C) near furnaces, radiator or sources of
heat.

• DO NOT release CO

gas from old cylinder.

2

• DO NOT touch refrigeration lines inside units; some
may exceed temperatures of 200°F (93.3°C).

NOTICE: All utility connections and fixtures must be
sized, installed, and maintained in accordance with
Federal, State, and Local codes.

• DO store CO

cylinder(s) in well ventilated areas.

2

Part Number 000003912 2/10 2-3

Installation Section 2

Location Requirements

SODA REFRIGERATION UNIT “QUICK-PICK” SELECTION CHART

Number of Dispensing Stations

Business Level* 1 2 3 4

Up to 6 gal / 3 L

of syrup/day or

280 drinks/day

(2,000 gal/yr)

Up to 12 gal / 45 L

of syrup/day or

560 drinks/day

(4,000 gal/year)

Up to 21 gal / 79 L

of syrup/day or

980 drinks/day

(7,500 gal/yr)

Up to 32 gal / 121 L

of syrup/day or

1400 drinks/day

(11,500 gal/yr)

Up to 42 gal / 159 L

of syrup/day or

2000 drinks/day

(15,000 gal/yr)

* Care must be taken when selecting the proper refrigeration unit. Above selections are for 75°F (24°C) conditions, 16 ounce (470 ml) drinks, and average business

cycles. Other factors such as lunch or dinner peak periods, large drinks, or high ambient conditions may require the next larger size unit. Contact your Manitowoc
Company Authorized Distributor or Manitowoc Beverage Systems (MBS) for more information.

Model 2803

40 ft / 12 m

Maximum

Conduit Length

Model 11M

100 ft / 30 m

Maximum

Conduit Length

Model 44M

250 ft / 80 m

Maximum

Conduit Length

Model 44M

250 ft / 80 m

Maximum

Conduit Length

Model 50M

350 ft / 107 m

Maximum

Conduit Length

Model 11M

100 ft / 30 m

Maximum

Conduit Length

Model 11M

100 ft / 30 m

Maximum

Conduit Length

Model 44M

250 ft / 80 m

Maximum

Conduit Length

Model 44M

250 ft / 80 m

Maximum

Conduit Length

Model 50M

350 ft / 107 m

Maximum

Conduit Length

Model 44M

250 ft / 80 m

Maximum

Conduit Length

Model 44M

250 ft / 80 m

Maximum

Conduit Length

Model 44M

250 ft / 80 m

Maximum

Conduit Length

Model 50M

350 ft / 107 m

Maximum

Conduit Length

Model 50M

350 ft / 107 m

Maximum

Conduit Length

Model 44M

250 ft / 80 m

Maximum

Conduit Length

Model 44M

250 ft / 80 m

Maximum

Conduit Length

Model 44M

250 ft / 80 m

Maximum

Conduit Length

Model 50M

350 ft / 107 m

Maximum

Conduit Length

Model 50M

350 ft / 107 m

Maximum

Conduit Length

CLEARANCES

Control Side (Right) 18" (45.7 cm)

Tower Connection Side (Left) 12" (30.5 cm)

Back Side 6" (15.2 cm)

Ceiling 18" (45.7 cm)

RATINGS

Model

Model 2803 &
SC180

Model 11M &
SC340

Model 44M &
SC1000

Model 50M &
SC2000

Evaporator Rating

at 20°F (-6.5°C)

2,500 BTUH

490 kcal/hr

5,150 BTUH

1,159 kcal/hr

9,700 BTUH

2,340 kcal/hr

14,900 BTUH

3,310 kcal/hr

Heat Rejection (Max.)

4,500 BTUH

885 kcal/hr

8,638 BTUH

1,949 kcal/hr

13,576 BTUH

3,685 kcal/hr

20,400 BTUH

4,285 kcal/hr

Select a location for the refrigeration unit that meets the
requirements of the building plans, local codes, and
personnel. The unit must be positioned for free airflow

as well as for future service. The following requirements
must be met:

• 100 GPH (379 LTR/hr) potable water supply Models
2803/11/38; 200 GPH (757 LTR/hr) potable water
supply Models 44/50

• Beverage quality CO

gas (bulk or bottled supply)

2

with a minimum 3/8" (.96 cm) line

• One Bag-In-Box (BIB) container of each post mix
syrup flavor.

NOTE: Refer to nameplate on side of refrigeration unit
for voltage and amperage specifications. Make all
electrical connections at the junction box located at the
top rear of unit. Optional equipment may require
additional power supplies.

NOTE: Potable water connections to the equipment
must comply with local plumbing code requirements,
particularly the back-flow prevention requirements.

2-4

Part Number 000003912 2/10

Section 2 Installation

!

Warning

Important

Important

Installer Instructions

Carbon Dioxide (CO2) displaces oxygen. Exposure
to a high concentration of CO
which are followed rapidly by loss of consciousness
and suffocation. If a CO
particularly in a small area, immediately ventilate the
area before repairing the leak. CO
must not be installed in an enclosed space. An
enclosed space can be a cooler or small room or
closet. This may include convenience stores with
glass door self serve coolers. If you suspect CO
may build up in an area, venting of the BIB pumps
and/or CO

monitors must be utilized.

2

KITCHEN EQUIPMENT INSTALLER
REPRESENTATIVE RESPONSIBILITIES

Prior to scheduling Multiplex Equipment installer,
the following steps listed below must be completed:

1. Usable floor sewer drain.

2. A 120 VAC, 3-wire, 1 Phase, 60 Hz Electrical Power
Supply (minimum 30 Amp capacity).

- Model 44 is 208/230, 3-wire, 1 Ph 60 Hz

- Model 50 is 208/230, 4-wire, 3Ph 60 Hz

- International Models are 50 Hz

3. Usable potable water.

4. CO

Gas (bulk or bottled supply); minimum 3/8" line.

2

5. One 5 gallon (19 L) container or Bag-In-Box
container of each post mix syrup flavor.

6. A 120 VAC, 3-wire, 1 Phase, 60 Hz dual wall
receptacle for optional electrical equipment
(domestic only).

NOTE: Do not schedule the authorized Multiplex
Equipment Installer until all of the above have been
completed. It will only result in charge-backs to you for
the unnecessary trips.

REQUIREMENTS FOR POST MIX REFRIGERATION
UNITS

• Conduit can be run through floor or ceiling chase.

• 60°F (15.6°C) minimum and 105°F (40.5°C)
maximum operating ambient conditions.

gas causes tremors,

2

gas leak is suspected,

2

lines and pumps

2

The remainder of these instructions is to be
completed by an authorized Multiplex Installer.

These equipment instructions are intended to assist
qualified personnel in the unpacking, locating and the
initial operation of the Multiplex Beverage Equipment
Post Mix Refrigeration Unit.

2

This publication must be saved for future reference.
Read instructions before attempting installation.

PREPARATION

The Multiplex Beverage Equipment Post Mix
Refrigeration Unit is pre-assembled in the factory and
requires minimum installation.

For future reference or to be used when ordering parts,
record the Model Number, Serial Number, Part Numbers
of Unit, Condenser (if remote), Towers, etc., and Date of
Installation on the inside of this Manual. Leave manual
on site in a safe place. Do not discard manual.

Ambient Location Requirement

This equipment is rated for indoor use only. It will not
operate in sub-freezing temperature. In a situation when
temperatures drop below freezing, the equipment must
be turned off immediately and properly winterized.
Contact the manufacturer for winterization process.

• For indoor installation only.

• Syrup supply can be located on stand or adjacent to
refrigeration unit.

Part Number 000003912 2/10 2-5

Installation Section 2

!

Warning

Electrical

GENERAL

ELECTRICAL REQUIREMENTS

Refer to Ice Machine Model/Serial Plate for
voltage/amperage specifications.

All wiring must conform to local, state and national
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 beverage/ice machine’s running amp
load.) The wire size (or gauge) is also dependent upon
location, materials used, length of run, etc., so it must be
determined by a qualified electrician.

SPECIFICATIONS

Model Volt/Cycle/Phase Minimum Circuit Amps Breaker Compressor

2803 & SC180 120/60/1

230/50/1

11M & SC340 120/60/1

230/50/1

44M &
SC1000

208-230/60/1

230/50/1

20.3

9.0

21.5

10.7

20.6

20.6

25A
16A

30A
16A

30A
25A

1/3 hp

.46 kW

1/2 hp

.97 kW

1 hp

1.9 kW

50M 120* /208-230/60/3

230/400/50/3

SC2000 208-230/60/3

230/400/50/3

25.2

11.6

25.2

11.6

30A
20A

20A
15A

* Only the model 50M with SS part numbers have 120V components, the TS does not.

2.2 hp

2.0 kW

2.2 hp

2.0 kW

2-6

Part Number 000003912 2/10

Section 2 Installation

!

Warning

!

Warning

!

Warning

GROUNDING INSTRUCTIONS

When using electric appliances, basic precautions

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

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.

NOTE: The 208/230V units are not equipped with a cord.

Improper connection of the equipment-grounding
conductor can result in a risk of electric shock. The
conductor with insulation having an outer surface
that is green with or without yellow stripes is the
equipment grounding conductor. If repair or
replacement of the cord or plug is necessary, do not
connect the equipment-grounding conductor to a
live terminal. Check with a qualified electrician or
serviceman if the grounding instructions are not
completely understood, or if in doubt as to whether
the appliance is properly grounded. Do not modify
the plug provided with the appliance — if it will not fit
the outlet, have a proper outlet installed by a
qualified electrician.

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

shall 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. For a permanently connected appliance — Turn

the power switch to the off position when the
appliance is not in use and before servicing or
cleaning.

h. For an appliance with a replaceable lamp —

Always unplug before replacing the lamp.
Replace the bulb with the same type.

i. For a grounded appliance — Connect to a

properly grounded outlet only. See Grounding
Instructions.

Part Number 000003912 2/10 2-7

Installation Section 2

Screw

Drain Hose

Bottom

of Unit

Bracket

Plumbing/Water Supply

PLUMBING POTABLE WATER

Required

Model

2803 &
SC180

11M &

SC340

44M &

SC1000

50M 40 – 70 psig

SC2000 40 – 70 psig

Water

Pressure

40 – 70 psig

(2.8 – 4.9 bar)

40 – 70 psig

(2.8 – 4.9 bar)

40 – 70 psig

(2.8 – 4.9 bar)

(2.8 – 4.9 bar)

(2.8 – 4.9 bar)

A 1" (2.54 cm) ID copper inlet water line equipped with a
3/4" (1.905 cm) FPT sweat adapter with shut-off must be
supplied by plumber at rear of equipment. Appropriate
floor drains must be provided within 6 ft (183 cm) of each
unit installed.

NOTE: The carbonator in this unit is provided with a dual
check valve type back-flow preventer, which conforms to
ASSE 1032. The Model 50M & 44M vented backflow
preventer conforms to ASSE 1022.

Potable water connections to the equipment must
comply with the basic plumbing code of the Building
Officials and Code Administrators International, Inc.
(BOCA) and the Food Service Sanitation Manual of the
Food and Drug Administration. Verify local plumbing
code requirements.

PLUMBING REQUIREMENTS – GENERAL

Incoming water supply must be provided before
installation of the refrigeration unit and must comply with
local plumbing requirements.

1. A minimum 1" (2.54 cm) water supply line with a
manual shut-off valve must be plumbed at least 6 ft
(183 cm) from the unit. The incoming water supply
pressure must not exceed 70 psi static (4.8 bar) and
be no less than 40 psi (2.8 bar) dynamic. If supply
water pressure is greater than 70 psi (5 bar), a water
regulator will be required.

2. Locate the drain hose, bracket, and two screws
provided in the installation kit. Attach the drain hose
to the water bath overflow tube located on the
bottom of the refrigeration unit.

Drain

Connections

3/4" ID

within 6 ft (2 m)

3/4" ID

within 6 ft (2 m)

3/4" ID

within 6 ft (2 m)

3/4" ID

within 6 ft (2 m)

3/4" ID

within 6 ft (2 m)

Water

Supply

3/8" ID

EVA Line

3/8" ID

EVA Line

1/2" ID

EVA Line

1/2" ID

EVA Line

1/2" ID

EVA Line

3. Connect the water manifold supply line, located on
the bulkhead panel in the motor compartment to the
main water supply. The main water supply shut-off
valve must remain in the OFF position. If a water
filter is to be installed, connect the line to the outlet
fitting of the filter. Plumb according to applicable
plumbing codes.

Drain Hose Connection

4. When a water cooled condenser is installed, a
copper supply line (not supplied with unit) must be
plumbed to the 3/8" (.965 cm) male flare fitting
installed in the water shut-off assembly. The shut-off
must be placed in the OFF position. A copper drain
line (not supplied) is to be connected to the outlet
fitting of the water cooled condenser and routed to
the floor drain.

WATER SUPPLY

1. Use the built in fill valve that is already plumbed into
the unit.

2. An appropriate floor drain is required within 6 ft (2 m)
of the unit.

3. Potable water connections to the equipment must
comply with the basic plumbing code of the Building
Officials and Code Administrators International, Inc.
(BOCA) and the Food Service Sanitation Manual of
the Food and Drug Administration. Verify local
plumbing code requirements.

2-8

Part Number 000003912 2/10

Section 2 Installation

123 45 6

12345

6

3/8" Barb x

3/8" Tube

Dispensing Tower Syrup BIB

Carbonator

Tank

Circulating
Water Coil

Circulating

Water Pump

Refrigeration Unit

Syrup

Coil

To

To we r

3/8" Barb x

3/8" Tube

From
Syrup
Tanks

PLUMBING CIRCUIT DIAGRAMS — MODEL 2803

Part Number 000003912 2/10 2-9

Installation Section 2

Installation Kit

(020001441)

020001403

00861302

Pressurized

Filtered

Water

Supply

Primary

Carb

Pump

Circ

Pump

Carb
Tank

PLUMBING CIRCUIT DIAGRAMS — MODEL 11M ROOT BEER

Single Tower Plumbing

2-10

Part Number 000003912 2/10

Section 2 Installation

Installation Kit

(020001441)

020001403

00861302

Pressurized

Filtered

Water

Supply

Primary

Carb

Pump

Circ

Pump

Carb
Tank

Tee Kit

(020001411)

Model 11M Root Beer Dual Tower Plumbing

Part Number 000003912 2/10 2-11

Installation Section 2

Installation Kit

(020001441)

020001403

00861302

Pressurized

Filtered

Water

Supply

Primary

Carb

Pump

Circ

Pump

Carb
Tank

Tee Kit

(020001411)

Tee Kit

(020001411)

Model 11M Root Beer Three Tower Plumbing

2-12

Part Number 000003912 2/10

Section 2 Installation

To C o ff e e

Machine

To Ice

Machine

Legend

Phosphate

Feeder

(optional)

Accumulator

Tank

(optional)

To

Plain Water

Val ve

Filtered Water

Pressure Gauge

Primary

Carbonator

Cooling

Coil

Carbonator

Tank

Cooling

Coil

Cooling

Coil

Circulator

Pump

To we r

To we r

To we r

Optional Constant Water

Pressure Booster Module

Booster

Tank

High

Pressure

Switch

H

L

High

Pressure

Gauge

Low

Pressure

Switch

Constant Pressure

Booster Pump

Pump

Optional Pressure

Regulator

(55 psi [3.8 bar])

Low

Pressure

Gauge

Fine Filters

(optional)

Coarse Filter

(optional)

To Optional

Water Cooled

Condenser

Primary

Water Supply

Booster Module

Replacement Line

— Electric Solenoid Valve

— Manual Ball Valve

— 3-way Ball Valve

— Pressure Relief Valve

— Check Valve, Ball Type

— Check Valve,

— Vent to Atmosphere

PLUMBING CIRCUIT DIAGRAMS — MODEL 44M

Pressurized Water Circuit Diagram

Part Number 000003912 2/10 2-13

Installation Section 2

6

1

2345

6

1

2345

6

1

2345

6

5

4

3

2

1

6A5A4A3A2A1

W

6

1

2345

6

1

2345

6

1

2345

6

5

4

3

2

1

6A5A4A3A2A1

W

6

1

2345

6A5A4A3A2A1

W

6

1

2345

6

1

2345

6

1

2345

6

5

4

3

2

1

6A5A4A3A2A1

W

6

1

2345

6A5A4A3A2A1

W

6

1

2345

6A5A4A3A2A1

W

Single Tower System

Two Tower System

with Connection at Center Island

Three Tower System

with Connection at Center Island

Self Serve or

Center Island Tower

Drive-thru Tower

Self Serve Tower Drive-thru Tower

Optional

Self Serve Tower

Syrup

Cooling Coils

Syrup Filters

(#2 through #11

optional)

Syrup Tanks

Syrup Tanks

Syrup Tanks

Syrup

Cooling Coils

Syrup Filters

(#2 through #11

optional)

Syrup

Cooling Coils

Syrup Filters

(#2 through #11

optional)

Drive-thru or

Center Island Tower

Pre-mix Plumbing — Six Valve Towers with Connection at Center Island

NOTE: Other plumbing configurations are possible. Check tower installation manual before making connections.

2-14

Part Number 000003912 2/10

Section 2 Installation

Single Tower System

Two Tower System

with Connection at Center Island

Three Tower System

with Connection at Center Island

Self Serve or

Center Island Tower

Drive-thru Tower

Self Serve or

Center Island Tower

Drive-thru Tower

Self Serve or Center

Island Tower

Syrup

Cooling Coils

Syrup Filters

(#2 through #11

optional)

Syrup Tanks

Syrup Tanks

Syrup Tanks

Syrup

Cooling Coils

Syrup Filters

(#2 through #11

optional)

Syrup

Cooling Coils

Syrup Filters

(#2 through #11

optional)

Drive-thru or

Center Island Tower

Pre-mix Plumbing — Eight Valve Towers with Connection at Center Island

7

8

6A5A4A3A2A1

A

A

6A5A4A3A2A1

W

7A8

A

W

6A5A4A3A2A1

7A8

A

W

8

6

6

6

6

4

3

5

7

1

234587

6

1

234587

6

1

234578

1

234587

1

234587

1

2

6

6

6

7

8

234587

234587

4

3

5

2

1

1

1

6A5A4A3A2A1

6A5A4A3A2A1

7A8

A

6A5A4A3A2A1

7A8

A

W

7A8

A

W

W

6

1

234578

6

6

6

6

5

7

8

1

234587

1

234587

1

234587

4

1

3

2

6

1

234578

Part Number 000003912 2/10 2-15

Installation Section 2

Single Tower System with Connection at Unit Two Tower System with Connection at Unit

Three Tower System with Connection at Unit

Self Serve or

Center Island Tower

Drive-thru Tower

Self Serve or

Center Island Tower

Drive-thru Tower

Self Serve or Center

Island Tower (optional)

Pressurized

Filtered

Water Supply

Pressurized

Filtered

Water Supply

Pressurized

Filtered

Water Supply

Drive-thru or

Center Island Tower

Primary

Carbonator

Pump

Circulator

Pump

Water

Feeder

Carbonator

Tan k

Primary

Carbonator

Pump

Circulator

Pump

Wate r

Feeder

Carbonator

Tan k

Primary

Carbonator

Pump

Circulator

Pump

Water

Feeder

Carbonator

Tan k

Carbonated

Water Circuit

Legend (Water)

Plain Water
Carbonated Water

Carbonated Water Plumbing — Six Valve Towers with Connection at Unit

Supplies Carbonated Water to Diet Drink and Provides Conduit Cooling for Products

6A5A4A3A2A1

W

W

98

98

W

6A5A4A3A2A1

W

98

98

W

W

8

6A5A4A3A2A1

W

9

W

2-16

6A5A4A3A2A1

W

W

8

9

6A5A4A3A2A1

W

889

98

W

W

6A5A4A3A2A1

W

9

W

Part Number 000003912 2/10

Section 2 Installation

9

9

6A5A4A3A2A1

W

W

98

W

98

7A8

A

W

98

W

98

W

9

8

6A5A4A3A2A1

W

7A8

A

6A5A4A3A2A1

W

7A8

A

6A5A4A3A2A1

W

7A8

A

8 9

8

W

6A5A4A3A2A1

W

7A8

A

6A5A4A3A2A1

W

7A8

A

W

8

W

8 9

W

Single Tower System with Connection at Unit Two Tower System with Connection at Unit

Three Tower System with Connection at Unit

Self Serve or

Center Island Tower

Drive-thru Tower

Self Serve or

Center Island Tower

Drive-thru Tower

Self Serve or Center

Island Tower (optional)

Pressurized

Filtered

Water Supply

Pressurized

Filtered

Water Supply

Pressurized

Filtered

Water Supply

Drive-thru or

Center Island Tower

Primary

Carbonator

Pump

Circulator

Pump

Water

Feeder

Carbonator

Tan k

Primary

Carbonator

Pump

Circulator

Pump

Wate r

Feeder

Carbonator

Ta nk

Primary

Carbonator

Pump

Circulator

Pump

Water

Feeder

Carbonator

Ta nk

Carbonated

Water Circuit

Legend (Water)

Plain Water
Carbonated Water

Carbonated Water Plumbing — Eight Valve Towers with Connection at Unit

Part Number 000003912 2/10 2-17

Installation Section 2

To Coffee

Machine

To Ice

Machine

Phosphate

Feeder

Accumulator

Ta nk

To Plain

Water Valve

Filtered Water

Pressure Gauge

Low Pressure

Regulator

Cooling Coil

Dispensing

To we r

Dispensing

To we r

Dispensing

To we r

Optional Constant Water

Pressure Booster Module

Booster

Tank

High

Pressure

Switch

H

L

High

Pressure

Gauge

Low

Pressure

Switch

Constant Pressure

Booster Pump

Pump

Low Pressure

Gauge

Fine Filters

Coarse

Filter

To Water Cooled

Condenser

Primary

Water Supply

Booster Module

Replacement Line

Legend

— Electric Solenoid Valve

— Manual Ball Valve

— 3-way Ball Valve

— Pressure Relief Valve

— Check Valve, Ball Type

— Check Valve,

— Vent to Atmosphere

Carbonator

Pump “A”

Pump

Pump

Pump

Carbonator

Pump “B”

Cooling Coil

Carbonator Tank “B”

Cooling Coil

Cooling Coil

Cooling Coil

Carbonator Tank “A”

Circulator

Pump “A”

Circulator

Pump “B”

L

Pump

By-pass (Export only)By-pass (Export only)

Low

Pressure

Switch

Syrup Tray Wash

To Danish Steamer

To Filet Bun Steamer

Optional Pressure Regulator

Set at 55 psi (3.8 bar)

Required with Booster Module

PLUMBING CIRCUIT DIAGRAMS — MODEL 50M

Pressurized Water Circuit Diagram

2-18

Part Number 000003912 2/10

Section 2 Installation

Carbonator

Tank “B”

Legend

— Manual Shut-off Valve

— Check Valve, Ball Type

— Manual 3-way Ball Valve

— Connection for Optional Kits

Carbonator

Tank “A”

Sugar Free Line & Disconnect

Sugar Base Lines & Disconnects

Sugar Base Lines & Disconnects

Optional

Air/CO

2

Change-

over Valve

Optional

CO

2

Change-over Valve

AB

Optional

Air Compressor

Optional Bulk CO

2

Tan k

Set at 90-100 psi

(6.2-6.9 bar)

Optional

CO

2

Ta n k

“A”

Optional

CO

2

Tank

“B”

Pressure Switch

“ON” = 70 psi (4.8 bar)

“OFF” = 90 psi (6.2 bar)

Shake

Machine

CO

2

Shut-off to

Carbonator Tank

Medium Pressure Regulator

Set at 60 psi (4.1 bar)

Low Pressure Regulator

Set at 15 psi (1 bar)

Shake Machine

Shut-off Valve

Optional CO

2

Regulators

Set at 90-100 psi

(6.2-6.9 bar)

CO2 Gas and Compressed Air Circuit Diagram

Part Number 000003912 2/10 2-19

Installation Section 2

Screw

Drain Hose

Bottom

of Unit

Bracket

Black Water
Supply Line

Braided CO2

Gas Line

Color Coded

Syrup Lines

Refrigeration Unit Installation

UNPACKING AND INSPECTING

Carefully inspect the refrigeration unit immediately upon
unpacking. Verify the equipment and parts received
against the Bill of Lading. Locate all items according to
packing list and inspect for possible damage caused by
shipping. Notify the appropriate carrier if necessary and
contact MBE immediately for replacement of parts if
discrepancies exist.

1. The Refrigeration Unit is pre-assembled in the
factory and requires a minimum installation. Locate
the following parts supplied with the unit.

2. Kit assembly includes:

- Tab clamps for conduit, syrup and circulating and
carbonated water coils

- Bracket for drain hose and screws for mounting

- Four 6" legs

- 6 ft (182.9 cm) drain hose

3. Locate any of the optional Kit Assembly for
mounting to match the type of mounting required.
Install the kit as noted in the instructions supplied.

UNIT INSTALLATION OVERVIEW

1. Set unit in place.

2. Connect the circuit electrically. Refer to chart.

3. Connect water supply.

4. Connect the product lines from the Bag-In-Box or
tank. See the plumbing diagrams for the tower setup
that pertains to your installation.

5. Connect the drain. Locate the drain hose, bracket,
and the two screws provided in the installation kit.
Attach the drain hose to the water bath overflow
tube located on the bottom of the refrigeration unit.
Route drain hose to a floor drain.

4. Record the Model Number, Serial Number and date
of installation for future reference, or to be used
when ordering parts.

6. Connect the conduit lines. Two carbonated water
lines and two product output lines.

2-20

Part Number 000003912 2/10

Section 2 Installation

!

Caution

POSITIONING OF REFRIGERATION UNIT

Before proceeding with installation, verify that all
requirements for roof mounted Remote Condenser Units
have been satisfied (if applicable). Refer to the
instructions on installing the Remote Condenser
supplied with the unit.

If unit is to rest on floor, locate four 6" (15.2 cm)
adjustable legs (optional). Screw and tighten legs into
the bottom of the refrigeration unit. Set unit in desired
location and adjust legs until unit is level and sturdy. If
unit is to be mounted on stand, position stand and
secure unit to stand. If unit is to be installed on a wall
mount bracket, install wall mount bracket and position
unit on bracket at this time. Fasten unit to bracket with
bolts provided.

EQUIPMENT PLACEMENT

NOTE: All Refrigeration Units must be mounted on
either 6" legs or optional stand.

1. Move the stand/refrigeration unit to the designated
area and position it near the wall at a distance of at
least 6" (15.2 cm) for air circulation in air-cooled
units, or at a distance required by local code.

2. Level the stand/unit by adjusting the leg levelers
provide on the legs or stand.

3. If unit is equipped with optional stand, lift the
Refrigeration Unit onto the stand. Position the unit in
the center of the stand. Be sure to orientate the drain
of the refrigeration unit with the drain access hole of
the stand. Secure with 5/8"-11 x 1" bolts supplied in
kit, use two (2) bolts diagonally. Schedule the
plumber and electrician to connect the water supply
and electrical service if you have not already done
so (refer to Electrical Requirements and Plumbing
Requirements for plumbing and electrical
requirements listed in these instructions).

4. Mount any optional equipment at this time. Follow
the installation instructions for each kit required.

ELECTRICAL CONNECTIONS

Make sure power supply to unit is turned off.

NOTE: The electrician must refer to the nameplate and
wiring schematic on the refrigeration unit for correct
electrical requirements. All wiring must comply with all
safety codes. Make sure all refrigeration unit power
switches are in the OFF position.

1. Remove junction box cover.

2. Route and connect power supply to leads in the
electrical junction box at the top rear of the motor
compartment.

NOTE: Be sure to connect ground wire(s) to ground
screw located on back panel of junction box.

3. Replace junction box cover.

Tower Installation

1. Locate placement of tower on the countertop per
restaurant design. Verify counter has been prepared
to accept the tower via mounting holes. Refer to
tower specs for verification.

2. Mount tower with mounting hardware.

Part Number 000003912 2/10 2-21

Installation Section 2

Wrong

Correct

Tubing Tubing

Wrong

Tube Stop

Correct

Tubing

Collet Cover

Collet

Tubing

Collet Cover

Collet

Black Water
Supply Line

Braided CO2

Gas Line

Color Coded

Syrup Lines

Conduit Installation

PROPER USE OF JOHN GUEST FITTINGS

NOTE: This unit has a compression type tube connector.
The following are step-by-step instructions on how to
properly use these fittings. For connecting purposes, all
connections are furnished with a 3/8" barb connector.

1. Before inserting tubing into a John Guest fitting, be
sure end of tubing is cleanly and squarely cut).

Proper Tubing Cut

2. Lubricate O-ring with water. Insert tubing into John
Guest fitting. Push tubing firmly through fitting until it
rests against the tube stop in the fitting’s main body
housing. The tubing is now locked into the John
Guest fitting.

3. To release tubing from John Guest fitting, slide collet
cover up tube and push in collet. Pull tubing out.

4. Neatly route syrup lines, braided CO

5. Attach the black water supply line to the water filter

6. Route the numbered syrup lines to the syrup supply

7. Attach the braided CO

gas line and

2

the black incoming water line through the inlet
opening on the left side of the refrigeration unit. Do
not allow any of these lines to rest on the agitator
motor or any other surface that may become hot.

or a filtered water supply. A 3/8" Barb fitting and tab
clamp, reducer bushing and 3/8" male pipe x 1/2"
OD John Guest tube adapter are provided in the
installation kit for making this connection.

(syrup tanks, Bag-In-Box, or bulk syrup). Do not
attach lines to syrup supply at this time. Lines will be
attached to syrup supply after system is tested for
leaks.

line with swivel nut to a

regulated CO

supply. Use nylon water provided in

2

installation kit. Note: do not turn ON CO

2

supply to

2

system at this time.

Proper John Guest Fitting Installation

2-22

Part Number 000003912 2/10

Section 2 Installation

Dispensing Tower No. 1

“T”

Connections

John Guest to Adapter

Syrup

Supply

Syrup

Coils

Note: Some

equipment may

provide more

product cooling

capability.

6

531

42

Circ.

Pump

Carb.

Tan k

Heat

Exchanger

Circ.

Pump

Carb.

Ta nk

Conduit

Conduit Tee

Towe r 1

Towe r 2

Refrigeration Unit

Heat

Exchanger

Blue

Yel l ow

Yel lo w

Blue

Two Circulation Pumps – Two Circuits

Circ.

Pump

Carb.

Tan k

Heat

Exchanger

Circ.

Pump

Carb.

Ta nk

Conduit

Conduit Tee

Towe r 1

Towe r 2

Refrigeration Unit

Heat

Exchanger

Two Circulation Pumps – Two Circuits

CONNECTING SUPPLY LINES

Pre-installation of towers is required and the appropriate
syrup supply must be connected to the corresponding
tower. The valves are numbered 1-6, 1-8, or 1-10 from
left to right viewing from the front of the tower.

1. For a two (2) tower installation, refer to the Syrup
Supply Line Diagram below. The syrup product
supply boxes can be positioned on a BIB rack in a
convenient location near the soda system.

Interlaced Tower

Syrup Supply Line Diagram (Valve #6 Water Only)

NOTE: Refer to the optional equipment component
installation instructions for completion (if applicable) of
the beverage system. Do not connect the syrup supply
at this time.

2. Locate the conduit supply lines for the refrigeration
unit. There are four (4) 1/2" (1.27 cm) carbonated
water lines marked in sets for the system. Connect
the yellow carbonated water supply line (7) to the
yellow carbonated water return line (A). Connect the
blue carbonated water supply line (8) to the blue
carbonated water return line (B). Refer to the
Carbonated Water Supply Line Diagram below.

Part Number 000003912 2/10 2-23

Non-interlaced Tower

Installation Section 2

Carbonated Water

Key

Dispensing Tower No. 2

Carb

B

Incoming

Water Supply

Circ

B

Carb

A

Circ

A

A

B

Dispensing Tower No. 1

Plain Water

9A
7A

8B
7B

12 34 5 6 78 1 2 3 4 5 6 7 8

Carbonated Water Supply Line Diagram

3. Locate the #1 and the #8 3/8" (.965 cm) syrup lines.
Note: Braided syrup lines located inside the conduit
bundle are used to prevent flavor transfer. Braided
syrup lines located outside the conduit bundle are
used for unsweetened tea or syrup that are like to
precipitate (if applicable).

4. Insert the eight John Guest adapters into the elbows
on the syrup coils. Note: The 3/8" (.965 cm) and 1/2"
(1.27 cm) adapters are supplied for either size conduit.

5. Locate the plain water line(s) in the conduit.
Determine the size, either 3/8" (.965 cm) or 1/2"
(1.27 cm) and the number (1 or 2). Jumper the line
labeled “W”. Either connect two splicers for two
water lines or use one of the tees supplied to
connect the two lines together.

6. Insert the conduit supply lines into the left hand
opening of the refrigeration unit. Connect the John
Guest fittings requiring the longest tube from the end
of the insulation first. Use two tab clamps each per
connection. It may be necessary to moisten the lines
and fittings before inserting the tubing over the

barbed fitting. Alter the remaining lines to make the
routing neat and secure.

7. Connect the CO

supply line from the CO2 tank

2

regulator to the line marked CO
3/8" (.965 cm) by 3/8" (.965 cm) splicer and secure
with Oetiker clamps.

Proceed with the Following Tests

• Ensure that overflow tube is firmly seated, not leaking.

• Check conduit for proper support and insulation.

• Cycle carbonator “A” momentarily.

• Cycle carbonator “B” momentarily (if applicable).

• Cycle circulating Motor “A” momentarily.

• Cycle circulating Motor “B” momentarily (if applicable).

• Cycle compressor momentarily.

• Ensure that agitator motor is running.

• Ensure that ice bank control probe is securely
attached to evaporator coil.

in the unit using a

2

2-24

Part Number 000003912 2/10

Section 2 Installation

Insulated

Beverage

Conduit

ROUTING INSULATED CONDUIT

1. Before connecting conduit, evaluate store situation
and lay out how the conduit will be routed. Be sure
to route conduit away from traffic areas, moving
parts, and heat sources.

2. Physically route conduit per evaluated plan.
Examine conduit routing and check for neatness,
kinks, and interferences.

CONNECTING INSULATED CONDUIT AT THE UNIT

NOTE: List what color line was connected to which
product so it can be connected correctly at the towers.

1. Route the conduit to the front opening and into the
unit. Cut the insulation back from the lines inside the
water bath.

2. Connect the circulating water by connecting one line
to the circulating pump outlet line (3/8" barb) and
clamp in place. Connect the other line to the
bulkhead return fitting located by the agitator motor
(3/8" barb) and clamp in place.

CONNECTING INSULATED SUPPLY LINES

Connecting the insulated beverage conduit at the
refrigeration unit

1. Route the Multipar beverage conduit from the
refrigeration unit to the dispensing station(s)
according to the instructions enclosed with the
conduit kit. Always route the conduit in a neat and
orderly manner.

NOTE: Multipar conduit is color coded for easy
identification of lines. When making connections always
attach lines requiring the longest connection from the
insulation first. The remaining lines can be trimmed as
required to make the routing neat and secure.

3. Locate the two blue carbonated water lines of the
Multipar conduit. Attach one of the blue lines to the
tee fitting located on top of the carbonator tank.
Attach the other blue line to John Guest elbow fitting
on the stainless coil labeled “8”.

4. Locate the black plain water line of the Multipar
conduit. Attach this line to the elbow fitting on the
stainless coil labeled “W”.

5. The remaining lines of the Multipar conduit are syrup
supply lines and must be attached to the appropriate
elbow fittings on stainless steel syrup coils. Note the
numbered lines attached to the opposite end of each
syrup coil when making connections.

2. Insert the Multipar conduit into the outlet opening on
the left hand side of unit. Conduit insulation must
extend inside of opening in unit for proper operation
of equipment.

Part Number 000003912 2/10 2-25

Installation Section 2

John Guest Fittings

Drain Hose

Control Switches

1/4" Plastic CO2 Line

from Carbonator

Right Hand Opening for

Conduit Supply Lines

John Guest Fittings

Drain Hose

Control Switches

Opening for Conduit

Supply Lines

Model 2803 Connections

Model 11M Connections

2-26

Part Number 000003912 2/10

Section 2 Installation

John Guest Fittings

Drain Hose Control Switches

Opening for Conduit

Supply Lines

John Guest Fittings

Drain Hose

Control Switches

Opening for Conduit

Supply Lines

Model 44M Connections

Model 50M Connections

Part Number 000003912 2/10 2-27

Installation Section 2

Aerosol Foam

Chase

Important

INSULATING CONNECTIONS

1. Make sure all exposed carbonated water and syrup
lines are well insulated on towers to conduit, conduit
junctions, refrigeration unit to conduits, and drivethrough
junction.

2. To insulate the above, use the leftover conduit sections
and tape.

3. Cut the conduit sections to fit snugly over the exposed
lines and fittings. A little extra time spent doing a
thorough job initially will eliminate a call back in several
days to make corrections.

NOTE: Do not inject foam material directly on the
connections where the tubing connects to the barb fittings or
directly on poly tubing.

NOTE: You must use a wrench on the body to keep the body
from turning while tightening the nut with the second wrench.
If the body turns excessively, the piercing seal will be
damaged.

4. Use proper wrenches to tighten an additional 1/4 turn
(90°). This final 1/4 turn is necessary to ensure the
formation of a leak proof joint. Alternately, use a torque
wrench to tighten the 1/2" coupling to 40 ft-lbs and 3/8"
fitting to 11 ft-lbs.

5. Leak check all your connections. If you detect any leaks,
repair and recheck.

Condenser and Pre-charged Lines Installation

Before proceeding with installation, verify that all
requirements for roof mounted remote condenser units (if
applicable) have been satisfied. If unit has a remote
condenser, refer to the instructions on installing the remote
condenser supplied with the condensing unit and refer to the
section on installation of remote refrigeration line sets.

If you are installing a remote unit, there is a
refrigeration king valve located behind the
compressor. This valve must be back seated prior to
starting the compressor. Failure to do so will short
cycle and may damage the compressor.

4. The can of foam is to be used to fill the openings
between the conduit insulation and the inside diameter
of the floor chases. The purpose is to provide an air tight
seal at the floor level to prevent foreign matter from
entering the chases. Please read the foam
manufacturer’s instructions carefully. We recommend
using the adapter with the right angle extension.

5. Insert the adapter into the openings approximately 1" to
2" (2.5 to 5.1 cm) while depressing the adapter.

6. Move the extension around throughout the area where
the foam is to be placed. Do not over fill, allow room for
expansion. If the chase opening is too deep insert a
section of the leftover conduit insulation in the opening
prior to using the foam insulation.

Aeroquip Connection

1. Lubricate male half diaphragm and synthetic rubber seal
with refrigerant oil.

2. Thread male coupling to its proper female half by hand
to ensure proper mating of threads.

3. Use proper wrenches (on coupling body hex and its
union nut) and tighten union nut until coupling bodies
“bottom”.

REMOTE CONDENSER REQUIREMENTS

APPROVED CONDENSERS

Multiplex Condenser - TS0895-271

MAC Multi-Pass Condensers

1. Installation and maintenance are to be performed only
by qualified refrigeration personnel. These technicians
must have EPA certification (USA), are familiar with local
codes and regulations, and are experienced with this
type of remote refrigeration equipment.

2. As a condition of the warranty, the check, test and start­up procedure must be performed by qualified personnel.
Because of possible shipping damage, check both the
condensing unit and refrigeration unit(s) for refrigerant
leaks.

3. If the refrigeration unit is located on a roll out platform,
you must coil up to one round between the back of the
stand and the wall. This allows pull out of the
refrigeration unit for servicing.

4. If the refrigeration unit is located in a stationary location,
you must remove excess refrigeration tubing as
described below.

2-28

Part Number 000003912 2/10

Section 2 Installation

Important

Discharge Line

Condenser Trap

To the

Condenser

Discharge Line Trap Every

25 Vertical ft. (7.62 m)

3 ft (.9 m) (minimum) of Discharge

Line Trap at the Compressor

Compressor

3" (7.6 cm) x 6" (15.2 cm)

Maximum Trap Area

!

Caution

3" Pitch

Roof

PRE-CHARGED REFRIGERATION LINE REQUIREMENTS

If you have a MAC Multi-Pass condenser please add
three (3) pounds additional charge.

1. Both the discharge and liquid remote condensing lines
must be kept to a minimum distance for maximum
performance. All Multiplex systems are capacity rated to
100 ft (30.5 m) tubing distance between the compressor
and condenser. If you have another brand condenser,
please add additional charge for the condenser (example:
up to three (3) pounds for a MAC condenser).

2. Any vertical rise 25 ft (7.62 m) or greater must have a
manufactured or installed trap (bend), in the discharge
refrigeration line from the compressor to the remote
condenser. A trap is necessary for every additional 25 ft
(7.62 m) vertical rise. When excessive vertical rise exists,
this trap allows oil to reach the condenser and return to
the compressor.

3. The easiest method to create a trap is to bend the tubing
(smoothly, no kinks) into the trap form.

1. Determine a position for installation that will allow access
for maintenance and is free from obstruction. Verify hot air
discharge from other condensers does not interfere with
the inlet of this condenser.

2. Install the four legs to the sides of the condenser using
the mounting bolts provided.

3. The General Contractor or Owner must secure two
treated lumber 4" x 4" x 36" (or longer). You may then
mount the remote condenser to the treated lumber.

4. The General Contractor or Owner must install a 3" pitch
pot in the roof. Then seal for weather protection.

4. The trap(s) must be of minimum height of 3" (7.6 cm) and
a width of 6" (15.2 cm) to minimize oil accumulation. The
traps can also be bent out of the refrigeration tubing.
Carefully bend the tubing down 12", and then sweep the
tubing back up.

5. It is critical that the Multiplex remote condensing line size
specifications for the specific model be maintained. The
specifications are 1/2" discharge and 3/8" liquid lines.

INSTALLING THE MULTIPLEX REMOTE CONDENSER

The Multiplex remote condensing units have a 208-230 Volt,
50/60 HZ, 1 PH fan motor that includes a permanent split
capacitor and internal overload protection. The electrical wires
from the refrigeration unit wire to the condenser. The electrical
installation must be in accordance with local codes, National
Electrical Code and regulations.

Part Number 000003912 2/10 2-29

5. Locate the pre-charged refrigeration lines shipped with
the system. These lines must be a correct length for the
building design. Avoiding any kinks, neatly route these
lines from the remote condenser to the refrigeration unit.
Excess refrigeration tubing must be handled in one of two
ways. When coiling the excess tubing, make sure the
inlet to the coil is at the top of the coil and the exit is the
bottom of the coil. There can be no more than one turn to
the coil. If you have more tubing, you must cut out the
excess before connecting the ends. When cutting the
tubing, you must first evacuate the refrigerant (line sets
have a positive refrigerant holding charge of two to three
ounces). After shortening and welding the tubing together
again, you must vacuum the tubing to 250 microns. Then
recharge the tubing with the appropriate refrigerant at 4
ounces per length of tubing.

Excess refrigeration tubing must be properly cared
for before being connected to either the remote
condenser or the refrigeration unit.

Installation Section 2

CONNECTING THE PRE-CHARGED
REFRIGERATION LINES

NOTE: Before connecting the pre-charged refrigeration
lines, the refrigeration unit must be properly located,
leveled, and the water bath filled 1" (2.5 cm) below the
installed drain pipe.

1. Attach low side gauge set to service port on each
line set to verify positive pressure within the line set.

NOTE: If for any reason the lines are damaged and/or
leaking or the lines no longer charged, refer to “How To
Re-charge the Line Sets”. If the line set is too long for
the application, refer to “How to Shorten the Line Sets” in
Section 3.

2. Always make the connections at the condenser first,
using the end of the pre-charged lines with the valve
ports.

3. Connect the condenser side with the quick
connectors (discharge and liquid) up to condenser.
Refer to the section titled “Aeroquip Connection” in
these instructions.

4. Connect the refrigeration unit side with the quick
connects (discharge and liquid). Make sure to
provide a discharge trap at back of refrigeration unit,
or bend discharge line down 12" and then up
smoothly (no kinks) to provide a trap.

5. If a low refrigerant charge is detected, recover and
recharge the system adding the unit name plate
charge.

6. Repair any damages to the line sets before
proceeding.

Testing

TESTING CO2 CIRCUIT FOR LEAKS

It is advisable to test the system for leaks before turning
ON the water supply to the carbonator and connecting
the syrup tanks. If a leak does exist, it will be easier and
faster to make any correction.

1. Turn ON the CO
regulator to 90 psi (6.2 bar).

2. Position the CO
applicable) toward this regulator.

3. Move the air/CO
position (if applicable).

4. Allow the CO

5. Wait for 2 or 3 minutes before turning OFF the CO
tank valve. This will allow the lines to expand under
pressure.

supply and adjust the primary

2

tank changeover valve handle (if

2

changeover valve to the CO2

2

gas to enter the system.

2

2

6. Turn OFF the CO

tank valve. Observe the pressure

2

on the high pressure gauge (not the 90 psi [6.2 bar]
operating gauge). The needle may drop
approximately 1 psi (.09 bar), but must remain
constant and not lose pressure. Wait for several
minutes.

If pressure continues to fall, this indicates there is a leak
in the system which must be corrected.

The greater the leak, the faster the pressure will drop.
The smaller the leak, the slower the gauge will drop.

It may be necessary to use a soap solution at all
connections to locate a very small leak.

CO

gas must be present on all valves of the tower(s)

2

NOTE: All soap solution must be rinsed thoroughly from
tubing upon completion of testing.

TESTING SYRUP CIRCUIT (5 GALLON TANKS ONLY)

Before connecting the syrup tanks to the system, the
syrup circuits must be tested for leaks with CO

1. Connect an empty syrup tank to pre-mix syrup
circuits.

2. Connect one of the CO
this tank. Allow the tank to fill with CO

3. Observe the pressure of the primary CO

gas quick disconnects to

2

gas.

2

2

regulator (not the 90 psi [6.2 bar]).

4. Allow the CO

tank pressure to remain ON for a few

2

seconds. This will allow the lines to expand to
operating conditions.

5. Turn OFF the CO

tank cylinder.

2

6. Check all connections from the syrup tank through
the connections in the water bath area to all fittings
at rear of tower.

7. Check syrup circuitry on the tower by activating the
valve.

8. Follow the same procedure for the diet pre-mix
beverage circuit.

If no leaks are found in the syrup circuits and the
carbonated water circuit, the system is ready to be
insulated and placed in operation.

Preparing Ice Bank

BUILDING AN ICE BANK

1. At this time, fill the unit water bath tank to the top, or
within 1/2" (1.3 cm) of the top minimum, of the
overflow tube. Use a garden hose or another water
supply to do this.

gas.

2

tank

2-30

Part Number 000003912 2/10

Section 2 Installation

Drain Tube

Overflow

Tube

Water Bath

Tank

Tab

Clamp

Important

NOTE: A manual fill valve is incorporated into the water
circuit to the carbonator tank. This valve can be used to
manually add water lost for any reason. Do not leave this
valve ON constantly, only use it for filling and topping off.
The water bath must be drained, flushed, and refilled
every six months.

2. Turn ON the switch labeled “Refrigeration”. Allow
unit to run for about 15 minutes before proceeding to
step 3.

3. Turn ON the switch labeled “Agitator”.

Note: Turn this switch OFF to perform any operations in
the water bath area.

With water bath water temperature of 65°F (18°C), ice
must begin to form on the evaporator coils in
approximately 2 hours. The unit will build a full ice bank
in approximately 4 to 6 hours (depending on ambient
water temperature).

Wait until a thin layer of ice has begun to form on the
evaporator before proceeding any further.

8. Go to the tower(s) and brix the valves. Using a syrup
separator and volume cup, adjust the flow rate of the
carbonated water to two fluid ounces per second.
Then, using the separator and a brix cup, adjust the
syrup flow rate for a ratio of carbonated water to
syrup to 5 to 1.

Installation Checklist

Check all fittings and conduit attachments for
leaks. Check all insulated connections to make
sure that they are sealed.

Observe the pump operations for leaks.

4. Before turning on the carbonator or circulator switch,
verify that the pump box assembly has been
mounted and connected to the unit and the
appropriate syrup and water has been supplied.

5. Turn on the main water supply to the booster
assembly. Verify the booster is plugged in and that
the accumulator tank valve is open. (If the system
has an optional “Out-of-Syrup” device, verify that it is
unplugged.)

6. Verify the pump is running. Place the valve on the
right side of the pump box in the purge position until
all air bubbles have passed through the line. Turn
the valve back to “dispense”. Plug the Out-of-Syrup
device power cord into an appropriate wall outlet at
this time (if supplied).

NOTE: Verify that the pump box holding tank is full
before proceeding.

7. Turn on the circulator and carbonator switches. The
carbonator must run for approximately 1 to 3
minutes and shut off. The circulator must run
continuously. Verify that water is returning to the
water bath through the return bulk head fitting.

Check the water bath for full ice bank.

The stabilized water bath operating temperature
must be maintained at 33°F (.6°C) to 35°F
(1.7°C).

Close water bath feeder valve completely.

Part Number 000003912 2/10 2-31

Installation Section 2

THIS PAGE INTENTIONALLY LEFT BLANK

2-32

Part Number 000003912 2/10

Section 3 Operation

Conduit (In Wall)

6 Valve Soda Tower

8 Valve Soda Tower

Water Booster

Air Compressor

Conduit

CO

2

Panel

Multiplex

Refrigeration

Unit

BIB Pumps

CO

2

Tank

Bag-In-Box
(BIB) Syrup

BIB Rack

Water Fil te rs

Section 3

Operation

Typical System

Part Number 000003912 2/10 3-1

Operation Section 3

• The TS uses common components from Manitowoc ice makers
to assist in product and parts availability.

• The TS compressor is mounted with bolts instead of studs.

How the Multiplex Works

The Model 2803 is a 1/3 HP refrigeration unit that will
provide pre-mix carbonated beverages and chilled
carbonated water for up to 6 gal (3 L) of syrup/day or
280 drinks/day (2,000 gal/yr) with a 40 ft (12 m)
maximum conduit length. This is a remote refrigeration
unit that derives its peak draw capacity from the reserve
ice bank produced from a capillary tube refrigeration
system. This system is controlled to cycle ON and OFF
by the operation of the ice bank control. The sensing
bulb that controls the ice bank is located on an
adjustable bracket in the water bath.

The Model 11M is a 1/2 HP refrigeration unit that will
provide premix carbonated beverages and chilled
carbonated water for up to 12 gal (45 L) of
syrup/day or 560 drinks/day (4,000 gal/year) with a
100 ft (30 m) maximum conduit length. This is a remote
refrigeration unit that derives its peak draw capacity from
the reserve ice bank produced from a capillary tube
refrigeration system. This system is controlled to cycle
ON and OFF by the operation of the ice bank control.
The sensing bulb that controls the ice bank is located on
an adjustable bracket in the water bath.

The Multiplex Model 44M is a 1 HP refrigeration unit that
will provide pre-mix carbonated beverages and chilled
carbonated water for up to 32 gal (121 L) of
syrup/day or 1,400 drinks/day (11,500 gal/yr) with a
250 ft (80 m) maximum conduit length. This refrigeration
unit is a remote refrigeration unit that derives its peak
capacity from the reserve ice bank produced from a
capillary tube system. This system is controlled to cycle
ON and OFF by the operation of the ice control. The
sensing bulb that controls the ice bank is located on an
adjustable bracket in the water bath.

The Multiplex Model 50M 2.2 HP Pre-mix refrigeration
unit will provide pre-mix carbonated beverages and
chilled carbonated water for up to 42 gal (159 L) of
syrup/day or 2,000 drinks/day (15,000 gal/yr) with a
350 ft (107 m) maximum conduit length. This
refrigeration unit is a remote refrigeration unit that
derives its peak capacity from the reserve ice bank
produced by the operation of the compressor. This
system is controlled to cycle ON and OFF by the
operation of the ice bank control. The sensing bulb that
controls the ice bank is located on an adjustable bracket
in the water bath.

Differences Between the TS & SS Units

The Model 50M and 44M have 2 different sets of part
numbers. Starting in 2007 the Model 50M part numbers
no longer begin with a SS and now begin with a TS. The
following shows you how to tell the difference between
the TS version of the Model 50M and 44M and the SS.

3-2

Part Number 000003912 2/10

Section 3 Operation

• TS remote and water-cooled back panel connections
are offset to protect fittings.

• TS air-cooled condenser comes standard with a filter.

Two Stainless Steel log

style manifolds

• One regulated supply for
carbonator pumps.

• One unregulated supply
for non-carb drinks and
water bath fill.

Other Connections

• Connections are made in
the water bath
compartment.

• Separate plain water
manifold eliminates need
to plug off during
installation

• New unit has service connections in the electrical compartment.
Allows more room to work and more reliable connection.

• Electrical compartment has been moved up on the unit to
eliminate water intrusion potential from the pump compartment.

• All components are now 208/230V. This eliminates the need for
a neutral wire.

• Pump protection switch has been moved to the
pump compartment to eliminate potential leak point
in electrical compartment.

ELECTRICAL TS

WATER MANIFOLD TS

Part Number 000003912 2/10 3-3

Operation Section 3

• End panel has two ovals in the rear of the panel with
edge trim to help protect conduit lines.

• Has a round hole in the front and back panels with
no edge trim to protect lines.

• All panels have large oval access holes with interchangeable
covers.

• Front panel has 3 hole cover for water and CO

2

line routing.

• Back panel has solid cover.

• End panel has one open cover and one solid cover.

• Open cover provides wide ledge for conduit line protection.

• Front panel was solid and did not allow easy access for service.

• Switch panel was mounted flush to end panel.

• Front panel is split to allow front access to the compressor
compartment.

• Switches are recessed and the edge has trim panel to protect
fingers from sheet metal edges.

WATER BATH ACCESS SS

WATER BATH ACCESS TS

SERVICE ACCESS TS

Start-up (Non-ERC)

PLACING EQUIPMENT IN OPERATION

Before placing equipment in operation, verify that all
requirements for roof mounted Remote Condenser Units
(if applicable) have been satisfied. Refer to the
instructions on installing the Remote Condenser.

1. Fill the refrigeration unit water bath tank with water
to within 1/2" (1.27 cm) of the top of the overflow
tube.

2. Open the manual water shut-off valve to the water
cooled condenser (if applicable).

SERVICE ACCESS SS

3-4

3. Turn ON the rocker switch labeled “Refrigeration” to
begin building an ice bank.

4. Turn ON the rocker switch labeled “Agitator”.

NOTE: On TS units 3 & 4 are combined into 1 switch.

5. Ice will begin to form on the evaporator coils in
approximately 2 hours.

6. The refrigeration unit will build an ice bank in
approximately 4 to 6 hours.

7. If optional CO

/Water Control Panel has been

2

installed on the refrigeration unit, refer to the
installation instructions for operation and testing the
circuits for leaks.

8. The carbonation circuits “A” and “B,” as well as the
syrup circuits must be checked for leaks and
possible cross circuits before turning ON the water
supply to carbonator pumps.

9. Turn on main water supply. Set incoming regulator
to 55 psi on the CO

panel; 25 psi for the Model 11M

2

root beer system’s internal regulator (must be lower
than CO

supply pressure). Once water is supplied

2

Part Number 000003912 2/10

Section 3 Operation

to the unit, air needs to be purged from the
carbonator tank. Do so by lifting press relief valve
tab until water comes out of relief valve.

10. Turn on main CO
– 100 psi. For the Model 11 Root Beer system, set
regulator initially to 26 psi; it can be raised
incrementally to 30 psi if there is excessive foaming.

supply. Set regulator initially to 90

2

11. Set bag-in-box syrup tank push pressure CO

2

regulator to 65 – 70 psi. For the Model 11 Root Beer
system, set push pressure CO

regulator to 35 –

2

40 psi.

PLACING THE CARBONATION SYSTEM IN OPERATION

1. Open the CO
tank. Adjust the CO

gas supply valve at CO2 tanks or bulk

2

pressure to 90 psi (6.2 bar).

2

2. Open relief valve on top of the carbonator tank for 4
seconds to bleed off air in tank.

3. Turn ON the water supply to unit.

4. Turn ON the switch labeled “Carbonator Pump”.
Allow carbonator to run and cycle OFF.

5. Activate all valves until a smooth, continuous flow or
carbonated water and non-carbonated water appear
at the valves.

6. Turn ON switch labeled “Circulator”.

7. Allow at least 1 hour before proceeding to calibration
instructions. You may complete the sanitizing
instructions during this period.

Part Number 000003912 2/10 3-5

Operation Section 3

Conduit (In Wall)

6 Valve Soda Tower

8 Valve Soda Tower

Water Booster

Air Compressor

Conduit

CO

2

Panel

Multiplex

Refrigeration

Unit

BIB Pumps

CO

2

Tank

Bag-In-Box
(BIB) Syrup

BIB Rack

Water Fil te rs

Sequence of Operation

PRE-MIX REFRIGERATION UNIT

Ice Bank Is Required

1. Check water bath for full ice bank.

2. The stabilized water bath operating temperature
must be maintained at 33°F (0.6°C) to 35°F (1.7°C).

The following is a sequence of operations for the
Multiplex Pre-mix Beverage equipment.

1. Once a drink is dispensed, the following will occur:

A. For a Syrup Tank System, the Pre-mix syrup is

manually mixed at the store. Pre-mix beverage
is then transferred to a holding tank for supply to
the Multiplex system.

B. For a Bag-In-Box System, pre-mix syrup is

drawn from a Bag-In-Box by means of a gas
driven syrup pump.

2. The brix pump mixes a 5:1 ratio pre-mixer syrup and
water into a 3 gallon holding tank located in the
pump box (the 3 gallon tank is vented to
atmosphere).

3. The carbonator pump (stainless) pulls the 5:1
pre-mix out of the 3 gallon holding tank and injects it
into the pre-mix carbonator tank where the CO

2

pressure is 35 psi (2.4 bar) on the tank.

4. The circulator pump runs continuously and
circulates water bath water through the conduit to
provide cooling for all drinks.

Multiplex Pre-mix Beverage System Operation and Layout

3-6

Part Number 000003912 2/10

Section 3 Operation

Equipment Setup and Close Procedure

EQUIPMENT SETUP PROCEDURE

1. Ensure that all valve nozzles are attached to the
valves.

2. Observe pressure of CO
500 psi (34 bar) or more, or bulk CO
or more. Primary regulator set at 90 psi (6 bar) and
the secondary regulator set at 35 psi (2.4 bar).

3. Observe the control panel to verify that all pressure
gauges are set at correct operating pressures.

4. Check the syrup tanks to make sure a sufficient
number of tanks are connected in series to satisfy
business volume.

5. Clean syrup inlet and outlet quick disconnects at the
same time tanks are replaced. Rinse disconnects in
clean potable water.

EQUIPMENT CLOSE PROCEDURE

1. Clean the underside of the dispensing tower around
the nozzle area with a clean damp towel.

2. Pour at least 60 oz (1.8 liters) of warm water down
the drain openings.

high pressure tank of

2

tank of 150 psi

2

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Operation Section 3

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3-8

Part Number 000003912 2/10

Section 4 Maintenance

!

Warning

!

Warning

Bag

side

connector

Section 4

Maintenance

Sanitizing

BEVERAGE SYSTEM CLEANING

Flush sanitizing solution from syrup system.

Residual sanitizing solution left in system could
create a health hazard.

2. Disconnect the “syrup-line side” of the BIB
When using cleaning fluids or chemicals, rubber
gloves and eye protection must be worn.

Sanitize the beverage system at initial start-up as well as
regularly scheduled cleaning. The drain pan must be in
place under soda valves, to carry away detergent and
sanitizing agents that will be flushed through valves.

connector.

BAG-IN-BOX SYSTEM SANITATION

The procedure below is for the sanitation of one
syrup circuit at a time. Repeat to sanitize additional
circuits.

You will need the following items to clean and sanitize
the Bag-in-Box (BIB) beverage system:

• Three (3) clean buckets

• Plastic brush or soft cloth

• Mild detergent

• Unscented bleach (5% Na CL O) or
Commercial sanitizer

• Bag-In-Box bag connector

1. Prepare the following in the buckets:

• Bucket 1 — warm to hot tap water for rinsing.

• Bucket 2 — mild detergent and warm to hot
water.

• Bucket 3 — mix a solution of unscented bleach
(5% Na CL O) or commercial sanitizer and warm to
hot water. Mixture should supply 100 PPM
available chlorine (1/4 oz. bleach to 1 gallon water).

3. Rinse connector with warm tap water.

4. Connect syrup connector to BIB connector and
immerse both into Bucket 1. A “bag-side” connector
can be created by cutting the connector from an
empty disposable syrup bag.

Part Number 000003912 2/10 4-1

Maintenance Section 4

5. Draw rinse water through system until clean water is
dispensed. Most beverage valves allow the syrup
side to be manually activated by depressing the
syrup pallet.

6. Connect Bucket 2 to system.

7. Draw detergent solution through system until
solution is dispensed.

8. Repeat steps 2-7 until all syrup circuits contain
detergent solution.

9. Allow detergent solution to remain in the system for
5 minutes.

10. Connect Bucket 3 to system.

11. Draw sanitizing solution through system until
solution is dispensed.

12. Repeat step 11 until all syrup circuits contain
sanitizer solution.

13. Allow sanitizer solution to remain in system for 15
minutes.

14. Remove nozzles and diffusers from beverage
valves.

15. Scrub nozzles, diffusers and all removable valve
parts (except electrical parts) with a plastic brush or
a soft cloth and the detergent solution.

16. Soak nozzles, diffusers and removable valve parts
(except electrical parts) in sanitizer for 15 minutes.

17. Replace nozzles, diffusers and valve parts.

18. Connect Bucket 1 to system.

19. Draw rinse water through system until no presence
of sanitizer is detected.

20. Attach syrup connectors to BIBs.

21. Draw syrup through system until only syrup is
dispensed.

22. Discard first 2 drinks.

FIGAL BEVERAGE SYSTEM

1. Prepare the following in three clean Figal tanks:

• Rinse tank - fill with room temperature tap water.

• Detergent tank - mix approved beverage system
cleaner with warm water as directed.

• Sanitizing tank - mix a solution of unscented
bleach (5% Na CL O) or commercial sanitizer and
warm to hot water. Mixture should supply 100 PPM
available chlorine (1/4 oz. bleach to 1 gallon water).

2. Disconnect all product and water lines from product
tanks and remove carbonator.

3. Locate the Figal syrup tank for the circuit to be
sanitized. Remove both quick disconnects from the
Figal syrup tank. Rinse quick disconnects in tap water.

4. Connect rinse tank to the syrup line. Draw clean rinse
water through the valve until syrup is flushed from the
system.

5. Connect detergent tank to the syrup line and draw
detergent through the valve for two minutes. Then,
allow remaining detergent to stay in the system for
five minutes.

6. Connect rinse tank to the syrup line. Draw clean rinse
water through the valve until detergent is flushed from
the system.

7. Remove valve nozzle and diffuser as shown in Daily
Cleaning instructions. Using a plastic brush or a soft
cloth and warm water, scrub the nozzle, diffuser, bottom
of the dispensing valve and cup lever, if applicable.

8. Place removable valve parts (EXCEPT solenoids) in
sanitizing solution for 15 minutes.

9. Replace valve diffuser and nozzle on the beverage valve.

10. Connect sanitizer tank to the syrup line and draw sanitizer
through the valve for two minutes. Allow sanitizer to
remain in the system for a minimum of 15 minutes.

11. Reconnect syrup and carbonated water lines.

12. Draw syrup through the lines to rinse the system.
Discard drinks until at least two cups of satisfactory
tasting beverage are dispensed through the valve.

4-2

Part Number 000003912 2/10

Section 4 Maintenance

Important

!

Caution

Back-flow Preventer Maintenance

The integral carbonator in this unit is equipped with a
back-flow preventer designed to protect the potable
water supply from CO

The back-flow preventer must be checked at least
once every year to confirm that it is functioning
properly.

1. Shut OFF power to unit.

2. Shut OFF potable water supply to unit. Do not shut
OFF CO

3. Remove top cover panel of unit and disconnect inlet
fitting from back-flow preventer.

NOTE: The carbonator tank is still pressurized.

4. Observe inlet of backflow preventer #1 check for any
discharge. If there is no discharge, #1 check is OK.
Proceed to step 5. If there is discharge, proceed to
step 6.

5. Disconnect and carefully remove #1 check
assembly. Avoid losing any internal parts.

supply.

2

contamination.

2

Shipping, Storage and Relocation

Before shipping, storing, or relocating this unit, syrup
systems must be sanitized. After sanitizing, all
liquids (sanitizing solution and water) must be
purged from the unit. A freezing environment causes
residual sanitizing solution or water remaining inside
the unit to freeze, resulting in damage to internal
components.

6. Observe inlet of #2 check for any discharge. If there
is no discharge, #2 check is OK. Proceed to step 7.
If there is discharge, proceed to step 5.

7. Shut OFF CO
carbonator tank.

8. Remove back-flow preventer and install new
backflow preventer. Turn ON CO
for leaks.

9. Check water supply strainer upstream of backflow
preventer. Clean out and/or replace as required.

10. Reconnect water lines and turn water supply ON.

11. Turn ON power to unit.

supply and relieve pressure from

2

supply and check

2

Part Number 000003912 2/10 4-3

Maintenance Section 4

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4-4

Part Number 000003912 2/10

Section 5 Before Calling for Service

!

Warning

Section 5

Before Calling for Service

Checklist

If a problem arises during operation of your post mix
soda refrigeration unit, follow the checklist below before
calling service. Routine adjustments and maintenance
procedures are not covered by the warranty.

Problem Possible Cause To Correct

Water only dispensing:

No pressure

Syrup and CO

Syrup and plain water only dispensing:

One valve will not dispense anything:

Is there power to the valve?

Beverage dispensed is too sweet:

Is the ratio (brix) of the drink correct?

Beverage is not sweet enough:

Is the ratio (brix) of the drink correct?

Drinks are foaming:

Are system pressures correct?

only dispensing:

2

Carbonator

No pressure

Regulator(s) out of adjustment Check/adjust regulator(s).

Out of CO

Defective regulator(s) Check/repair/replace regulator(s).

line pinched, kinked, or obstructed Check/repair/replace CO2 line.

CO

2

No power Check poser supply. Plug in carbonator

Water supply Make sure water is turned ON.

Defective carbonator Check/repair/replace carbonator pump,

Out of CO

HP regulator out of adjustment Adjust HP regulator to the proper setting.

Defective HP regulator Check/repair/replace HP regulator.

line pinched, kinked, or obstructed Check/repair/replace CO2 line.

CO

2

Broken wire or loose connection Replace/repair wire or connector.

Bad microswitch Replace microswitch.

Flow control out of adjustment Adjust the flow control.

Insufficient soda flow due to low

carbonator pressure

Low CO

Obstruction in the water or soda line Clean out the lines.

Flow control out of adjustment Adjust the flow control.

pressure due to leaks Repair CO2 leaks.

2

Soda flow too high Reset CO

Obstruction in syrup line Clean out the syrup line.

Over carbonation Check CO

Dirty lines/valves Clean sanitize entire system.

Only trained and certified electrical and plumbing
technicians must service this unit. All wiring and
plumbing must conform to national and local codes.

2

Check/clean/replace pump strainer.

Check/clean/repair water check valve.

motor, electrode or liquid level control.

2

Adjust CO

Install fresh tank.

or reset breaker.

Replace water filter.

Check for frozen water line.

Internal Carbonator unit only.

Install fresh tank.

pressure or change the tank.

2

pressure or replace regulator

2

if necessary.

supply. Reset pressure or

2

replace regulator is necessary.

Part Number 000003912 2/10 5-1

Before Calling for Service Section 5

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5-2

Part Number 000003912 2/10

© 2008 Manitowoc
Continuing product improvements

may necessitate change of
specifications without notice.

Part Number 000003912 2/10

Manitowoc Foodservice

2100 Future Drive

Sellersburg, IN 47172, USA

Ph: 812-246-7000 Fax: [phone]

Visit us online at: www.manitowocfsg.com