Multiplex 38 Installation Manual
POST MIX SODA
REFRIGERATION UNITS
Models 2803/11/38/44
INSTALLATION GUIDE
Manitowoc Beverage Equipment
2100 Future Drive Sellersburg, IN 47172-1868
Tel: 812.246.7000, 800.367.4233 Fax: 812.246.9922
www.manitowocbeverage.com
In accordance with our policy of continuous product development and
improvement, this information is subject to change at any time without notice.
07-18-07 REV0
FOREWORD
Manitowoc Beverage Equipment (MBE) developed this manual as a reference guide for the owner/
operator, service agent, and installer of this equipment. Please read this manual before installation
or operation of the machine. A qualified service technician should perform installation and startup of this equipment, consult the
If you cannot correct the service problem, call your 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 _____________________________________________________________________
Troubleshooting Guide
within this manual for service assistance.
UNPACKING AND INSPECTION
Note: The unit was thoroughly inspected before leaving the factory. Any damage or irregularities should
be noted at the time of delivery.
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 Manitowoc Beverage Equipment 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 Manitowoc Beverage Equipment 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.
TABLE OF CONTENTS
FOREWORD ........................................................................................................ 2
UNPACKING AND INSPECTION ......................................................................... 2
WARRANTY INFORMATION ............................................................................... 2
SAFETY ............................................................................................................... 4
IMPORTANT SAFETY INSTRUCTIONS ........................................................................... 4
CARBON DIOXIDE WARNING ......................................................................................... 4
QUALIFIED SERVICE PERSONNEL ................................................................................ 4
SHIPPING, STORAGE, AND RELOCATION ..................................................................... 4
ADDITIONAL WARNINGS ................................................................................................ 4
GROUNDING INSTRUCTIONS ........................................................................................ 5
DOS AND DON'TS ........................................................................................................... 6
INSTALLATION .................................................................................................... 7
ATTENTION: MARINE INSTALLATIONS.......................................................................... 7
OUTDOOR APPLICATIONS ............................................................................................. 7
PLUMBING SPECIFICATIONS ......................................................................................... 7
LOCATION REQUIREMENTS .......................................................................................... 7
REQUIREMENTS FOR POST MIX REFRIGERATION UNITS .......................................... 7
INTRODUCTION ............................................................................................................... 7
PREPARATION ................................................................................................................ 7
INSTALLATION OF THE REFRIGERATION UNIT ............................................................ 8
POSITIONING THE REFRIGERATION UNIT .................................................................... 8
PLUMBING REQUIREMENTS .......................................................................................... 8
ELECTRICAL PROVISIONS ............................................................................................. 9
CONNECTING TOWERS AND CONDUIT ........................................................................ 9
INSULATING CONNECTIONS .......................................................................................... 9
SEALING INSTRUCTIONS ............................................................................................... 9
CONNECTING SUPPLY LINES ...................................................................................... 10
PROCEED WITH THE FOLLOWING TESTS ...................................................................11
TESTING THE CARBONATED WATER CIRCUITRY ...................................................... 12
SANITIZING PRIOR TO STARTUP ................................................................................. 12
REMOTE CONDENSER REQUIREMENTS .................................................................... 12
CONNECTING THE PRE-CHARGED REFRIGERATION LINES .................................... 14
HOW TO SHORTEN THE LINE SET............................................................................... 14
HOW TO RE-CHARGE THE LINE SETS ........................................................................ 14
AEROQUIP CONNECTION ............................................................................................ 16
OPERATION ...................................................................................................... 16
PLACING EQUIPMENT IN OPERATION ........................................................................ 16
ELECTRICAL SPECIFICATIONS ................................................................................... 16
SERIAL PLATE LOCATION ............................................................................................ 17
USER MAINTENANCE ...................................................................................... 18
SANITIZING SYRUP CIRCUITS AND TESTING SYRUP CIRCUITRY ............................ 18
50M 50HZ MODELS ....................................................................................................... 19
50M 60HZ MODELS ....................................................................................................... 20
INDEX................................................................................................................. 23
SAFETY
IMPORTANT SAFETY INSTRUCTIONS
Carefully read all safety messages in this manual. Learn how to operate this unit properly. Do not
allow anyone to operate the unit without proper training and keep it in proper working condition.
Unauthorized modifications to the this unit may impair function and/or safety and affect the life of
the unit.
CARBON DIOXIDE WARNING
DANGER: Carbon Dioxide (CO2) displaces oxygen. Exposure to a high concentration of CO2 gas
causes tremors, which are followed rapidly by loss of consciousness and suffocation. If a CO2 gas leak
is suspected, particularly in a small area, immediately ventilate the area before repairing the leak. CO
lines and pumps should 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 CO2 may build up in an area, venting of the B-I-B pumps and / or CO2 monitors should be utilized.
QUALIFIED SERVICE PERSONNEL
WARNING: Only trained and certified electrical and plumbing technicians should service this unit.
All wiring and plumbing must conform to national and local codes.
2
SHIPPING, STORAGE, AND RELOCATION
CAUTION: 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.
ADDITIONAL WARNINGS
Installation and start-up of this equipment should be done by a qualified service technician. Operation,
maintenance, and cleaning information in this manual are provided for the user/operator of the equipment.
Save these instructions.
Installation and Service Manual
SAFETY
GROUNDING INSTRUCTIONS
WARNING: Risk of electrical shock. Connect to a properly grounded outlet only.
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.
DANGER – 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.
WARNING – When using electric appliances, basic precautions should always be followed, including the following:
a) Read all the instructions before using the appliance.
b) To reduce he 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. Return appliance to 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.
SAVE THESE INSTRUCTIONS
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Installation and Service Manual
SAFETY
DOS AND DON'TS
Caution: To Avoid Serious Injury
Important: 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 should 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 CO2 cylinders and gauges with care. Secure cylinders properly against abrasion.
DO Store CO2 cylinder(s) in well ventilated areas.
DO NOT Exhaust CO2 gas (example: syrup pump) into an enclosed area, including all types of walk in coolers,
cellars, and closets.
DO NOT Throw or drop a CO2 cylinder. Secure the cylinder(s) in an upright position with a chain.
DO NOT Connect the CO2 cylinder(s) directly to the product container. Doing so will result in an explosion
causing possible death or injury. It is best to connect the CO2 cylinder(s) to a regulator(s).
DO NOT Store CO2 cylinders in temperature above 125°F (51.7°C) near furnaces, radiator or sources of heat.
DO NOT Release CO2 gas from old cylinder.
DO NOT Touch Refrigeration lines inside units; some may exceed temperatures of 200°F (93.3°C).
NOTICE: All utility connections and fixtures shall be sized, installed, and maintained in accordance with Federal,
State, and Local codes.
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Installation and Service Manual
INSTALLATION
ATTENTION: MARINE INSTALLATIONS
WARNING! This unit is for use on vessels over 66 ft (20 m) in length. This unit should not be
installed in the engine space of a gasoline-powered ship.
NOTE: This unit must be secured to the vessel during installation, TS models 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.
PLUMBING SPECIFICATIONS
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 should 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. 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.
LOCATION REQUIREMENTS
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
• Beverage quality CO2 gas (bulk or bottled supply)
with a minimum 3/8" (0.96 cm) line
• 200 GPH (757 LTR/hr) potable water supply
Models 44/50
• One (1) Bag-In-Box (BIB) container of each postmix syrup flavor.
NOTE: Refer to nameplate on side of refrigeration unit for voltage and amperage specifications. Make all electri-
cal 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, par-
ticularly the back-flow prevention requirements.
REQUIREMENTS FOR POST MIX REFRIGERATION UNITS
• Conduit can be run through floor or ceiling chase. • Syrup supply can be located on stand or adjacent
to refrigeration unit.
IMPORTANT: The remainder of these instructions is to be completed by an authorized
Multiplex Installer.
INTRODUCTION
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.
IMPORTANT: This publication should 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.
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Installation and Service Manual
INSTALLATION
INSTALLATION OF THE REFRIGERATION UNIT
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 section on installation of remote refrigeration line sets.
POSITIONING THE REFRIGERATION UNIT
Identify the appropriate location where the refrigeration unit and any optional equipment will be placed. Locate and
assemble all optional equipment that is to be installed on the refrigeration unit. Inspect for shortages and complete
kit assemblies.
1. Install all brackets and support legs (if not using op-
tional stand) before placing equipment in the proper
location.
2. Select a location for the unit that meets the require-
ments of the building plans, local codes, and personnel. The unit should be placed in a location that
will allow ease of maintenance and no obstruction of
airflow.
3. A floor drain must be available within six (6) feet (183
cm) of the unit and access to incoming water supply
and electrical outlets is a pre-installation requirement.
4. The backside of the unit should be at least six (6) inches
(15.2 cm) away from the wall (refer to figure 1).
5. Remove the top cover of the unit and expose the water bath and conduit connections.
TOP VIEW
SIDE VIEW
PLUMBING REQUIREMENTS
Incoming water supply should be provided before installation of the refrigeration unit and should 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 6ft
(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.
2. Locate the drain hose, bracket, and two (2) 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 HOSE CONNECTION
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.
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.
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Installation and Service Manual
INSTALLATION
ELECTRICAL PROVISIONS
Electrical service must agree with the requirements noted on the unit serial number plate. An opening is provided
in the side of the unit to route service to the field-wiring box. Wiring must conform to applicable codes.
1. For domestic units, one or more 15 Amp, 120 Volt
wall receptacle will be required if accessories such
as a CO2 Control Assembly, Air Pump, or Water
Booster Pump are installed with the unit.
CONNECTING TOWERS AND CONDUIT
Refer to the installation instructions packaged with the towers or other dispensing equipment and with the conduit used.
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 Drive-Thru
junction.
2. To insulate the above use the leftover conduit sections and tape.
2. For international versions, refer to codes directly on
the optional equipment installed and to the wiring
diagram.
3. Cut the conduit sections to fit like a glove over the
exposed lines and fittings. A little extra time spent doing a professional job initially will eliminate a call back
in several days to make corrections.
SEALING INSTRUCTIONS
Refer to the installation instructions packaged with the conduit used. (Aerosol foam not supplied with unit or conduit)
SEALING THE FLOOR CHASE
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