Multiplex 2803R04 Service Manual
Soda Systems & SuperChil™
Refrigeration Units
Technician’s
Handbook
This manual is updated as new information and models
are released. Visit our website for the latest manual.
America’s Quality Choice in Refrigeration
Part Number STH12 9/10
www.manitowocfsg.com
Safety Notices
!
Warning
!
Caution
Important
As you work on Manitowoc equipment, be sure to pay
close attention to the safety notices in this handbook.
Disregarding the notices may lead to serious injury
and/or damage to the equipment.
Throughout this handbook, 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 Ca ution 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 handbook. These notices
supply helpful information which may assist you as
you work.
Throughout this handbook, you will see the following
types of procedural notices:
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: T ext set off as a Note provides you with simple,
but useful, extra information about the procedure you
are performing.
Read These Before Proceeding:
!
Caution
Important
! Warning
We reserve the right to make product
improvements at any time. S pecifications and
design are subject to change without notice.
Proper installation, care and maintenance are
essential for maximum performance and troublefree operation of your Manitowoc equipment. If
you encounter problems not covered by this
handbook, do not proceed, contact Manitowoc
Foodservice Group. We will be happy to provide
assistance.
Routine adjustments and maintenance
procedures outlined in this handbook 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.
Table of Contents
General Information
Model Numbers . . . . . . . . . . . . . . . . . . . . .9
How to Read a Model Number . . . . . . . . .10
Accessories . . . . . . . . . . . . . . . . . . . . . . .10
Special Applications . . . . . . . . . . . . . . . .11
Model/Serial Number Location . . . . . . . .11
Warranty Information . . . . . . . . . . . . . . . .11
Installation
Pre-installation Checklist . . . . . . . . . . . . .13
Top Mounted Ice Maker Installations . . . 15
S250-M Dimensions . . . . . . . . . . . . . . . . .16
MII-250 Dimensions . . . . . . . . . . . . . . . . .18
MII-302 Dimensions . . . . . . . . . . . . . . . . .20
MII-250 Installation Kit . . . . . . . . . . . . . . .22
MII-302 Installation Kit . . . . . . . . . . . . . . .23
Refrigeration Units . . . . . . . . . . . . . . . . . .25
Safe Installation Dos and Don’ts . . . . . . .28
Location Requirements . . . . . . . . . . . . . .30
Electrical . . . . . . . . . . . . . . . . . . . . . . . . . .34
Plumbing/Water Supply . . . . . . . . . . . . . .38
Preparing Ice Bank – Non-ERC . . . . . . . .39
Preparing Ice Bank with ERC . . . . . . . . .41
Component Identification
Typical System . . . . . . . . . . . . . . . . . . . . .43
Connections . . . . . . . . . . . . . . . . . . . . . . .44
Maintenance
Maintenance Schedule . . . . . . . . . . . . . . .49
Cleaning and Sanitizing the Dispensing
Valves and Product Lines . . . . . . . . . . . .54
Sanitizing . . . . . . . . . . . . . . . . . . . . . . . . .58
Shipping, Storage and Relocation . . . . . 62
Operation
How the Multiplex Works . . . . . . . . . . . . .63
Differences Between the TS & SS Units .64
Equipment Setup Procedure (Non-ERC) 71
Part Number STH12 9/10 5
Start-up (Non-ERC) . . . . . . . . . . . . . . . . . 72
Sequence of Operation (Non-ERC) . . . . 74
Start-up (with ERC) . . . . . . . . . . . . . . . . . 76
Sequence of Operation (with ERC) . . . . 78
Equipment Setup Procedure (with ERC) 82
Equipment Close Procedure — All Units 84
Troubleshooting
Electronic Refrigeration Control (ERC) Model
Error Codes . . . . . . . . . . . . . . . . . . . . . . . 87
Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Problem Cross-reference Guide . . . . . . . 100
Gas System . . . . . . . . . . . . . . . . . . . 101
CO
2
Carbonated Water System . . . . . . . . . . . 104
Circulating System . . . . . . . . . . . . . . . . . 111
Compressed Air System . . . . . . . . . . . . . 112
Dispensing Valve and Tower . . . . . . . . . 114
Electrical System . . . . . . . . . . . . . . . . . . . 119
Refrigeration System . . . . . . . . . . . . . . . . 120
Syrup System . . . . . . . . . . . . . . . . . . . . . . 123
Water Booster System . . . . . . . . . . . . . . 125
Water Filter System . . . . . . . . . . . . . . . . . 127
When the Brix is OFF . . . . . . . . . . . . . . . 128
Component Check Procedures
Test Procedures: MPC 64A Timer/Selection
Pad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Dual Transformers . . . . . . . . . . . . . . . . . 133
New MPC84A Portion Control Board . . . 134
MOVs Field Testing . . . . . . . . . . . . . . . . . 140
Test Procedures: MPC84C Timer/Selection
Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Back-flow Preventer Maintenance . . . . . 144
Head Pressure Control Valve . . . . . . . . . 145
Charging Multiplex Remote Refrigeration
Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Compressor & Remote Condenser . . . . 148
Agitator Condenser . . . . . . . . . . . . . . . . . 149
Carbonation System A or B . . . . . . . . . . 150
Circulation System A or B . . . . . . . . . . . 151
ERC Control Board, Keypad & Display . 152
Programming / Auto Set . . . . . . . . . . . . . 153
6 Part Number STH12 9/10
ERC Component (Output) Connector Layout
154
ERC Sensor (Input) Connector Layout .154
Component Specifications
Refrigeration Unit Specifications . . . . . . 155
S-250M Specifications . . . . . . . . . . . . . . .156
MII-302 Specifications . . . . . . . . . . . . . . .156
Charts
Refrigerant Charge . . . . . . . . . . . . . . . . . .157
Operating Pressures . . . . . . . . . . . . . . . .161
McDonald’s Models History . . . . . . . . . . .163
Sustained Draw Curve Chart s . . . . . . . . .164
Diagrams
Wiring Diagrams . . . . . . . . . . . . . . . . . . . .167
Soda Wiring Diagrams . . . . . . . . . . . . . . .185
Super-Chil Wiring Diagrams . . . . . . . . . .200
Circuit Schematics . . . . . . . . . . . . . . . . . .212
Ice/Beverage Units Diagrams . . . . . . . . .231
Part Number STH12 9/10 7
8 Part Number STH12 9/10
This Page Intentionally Left Blan k
General Information
Model Numbers
This manual covers the following models:
(A) Air Cooled (W) Water Cooled (R) Remote Cooled
2803A04 2803W04 2803R04
2803AX04 2803WX04 2803RX04
2803A04 2803W04 2803R04
11MA04 11MW04 11MR04
11MAX04 11MAW04 11MRX04
11MA04 11MW04 11MR04
42MA04 42MW04 42MR04
42MAX04T 42MWX04T 42MRX04T
44MA04 44MW04 44MR04
44MAX04T 44MWX04T 44MRX04T
44EAX04T 44EWX04T 44ERX04T
50MA04 50MW04 50MR04
50MAX04 50MWX04 50MRX04
50MA04Q/T 50MW04Q/T 50MR04Q/T
SC180A SC180W SC180R
SC180AX SC180WX SC180RX
SC340A SC340W SC340R
SC340AX SC340WX SC340RX
SC1000A SC1000W SC1000R
SC1000AX SC1000WX SC1000RX
SC2000A SC2000W SC2000R
SC2000AX SC2000WX SC2000RX
Ice/Beverage Dispensers
MII-302 S-250M
Part Number STH12 9/10 9
How to Read a Model Number
Special Configuration
04 - R404a refrigerant
Model Prefix
Model Suffix
Model Base
11M A 04 x
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, 42M & SC1000 - 1 hp
44E - 1 hp, TUV Approved
50M & SC2000 - 2.2 hp
S - Ice/Beverage
Dispenser
MII - Ice/Beverage
Dispenser
M - Multiplex
Ice Capacity
Model Prefix Model Suffix
Model Base
S–250–M
ICE/BEVERAGE MODEL NUMBERS
Accessories
Depending on store type and location, various optional
equipment (such as CO
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.
10 Part Number STH12 9/10
Panel, water filter kit, water
2
Special Applications
!
Warning
!
Warning
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.
Personal Injury Potential
Do not operate equipment that has been misused,
abused, neglected, damaged, or altered/modified
from that of original manufactured specifications.
Model/Serial Number Location
These numbers are required when requesting
information from your local Manitowoc Distributor,
service representative, or Manitowoc Foodservice.
The model and serial number are listed on the
OWNER WARRANTY REGISTRATION CARD. They
are also listed on the MODEL/SERIAL NUMBER
DECAL affixed to the unit.
Warranty Information
Consult your local distributor for terms and conditions
of your warranty. Your warranty specifically excludes
all beverage valve brixing, general adjustments,
cleaning, accessories and related servicing.
Part Number STH12 9/10 11
Your warranty card must be returned to activate the
warranty on this equipment. If a warranty card is not
returned, the warranty period can begin when the
equipment leaves the factory.
No equipment may be returned without a written
Return Materials Authorization (RMA). Equipment
returned without an RMA will be refused at the dock
and returned to the sender at the sender’s expense.
Please contact your local distributor for return
procedures.
12 Part Number STH12 9/10
Installation
Pre-installation Checklist
When installing any system, first make sure the major
components are available. Generally the major
components necessary for an installation are:
B-I-B System also:
B-I-B connectors
B-I-B regulator set
B-I-B rack
B-I-B syrup boxes
Bulk Syrup System also:
Syrup connectors for Bulk tank
Gas connectors for Bulk tank
Bulk syrup tanks
Part Number STH12 9/10 13
Post Mix System:
CO2 regulator set
Beverage dispenser
Beverage tubing
CO
tank
2
Carbonator
Stepless (Oetiker) clamps
Chain for CO
tank
2
Double Check:
Do you have enough space to install the
dispenser or a dispenser and top mounted
cuber?
Does top mounted cuber (if utilized) have a
minimum of 6 inches (15.3 cm) clearance on
all sides?
Is the countertop level?
Can the countertop support the weight of the
dispenser, or the dispenser/cuber
combination plus the weight of the stored
ice?
14 Part Number STH12 9/10
Also consider the location of the following items before installa tio n:
Water line
Drain
Power outlet
Heating and air conditioning ducts
Top Mounted Ice Maker Installations
Location — Avoid placing the dispenser
and/or ice machine near heat sources such
as radiators, ovens, refrigeration equipment
and direct sunlight.
Clearances — Six inch (15.2 cm) clearance
on all sides of the icemaker is needed.
Front of icemaker to be flush with front of
dispenser — The front of the icemaker must
be flush with the front of the dispenser. When
the icemaker is flush with the front of the
dispenser, some icemakers may overhang at
the back of the dispenser.
Drains — A separate drain line is required
for the ice machine, in addition to a drain line
for the ice/beverage dispenser.
Dispensers require an adapter kit to install
some top-mounted icemakers. Contact your
local distributor for the correct adapter kit.
Part Number STH12 9/10 15
S250-M Dimensions
I
H
B
A
E
F
G
D
C
A
39.81"
(101.1 cm)
B
30.00"
(76.2 cm)
C
9.94"
(25.2 cm)
D
4.44"
(11.3 cm)
E
22.63"
(57.5 cm)
F
28.00"
(71.1 cm)
G
31.13"
(79.1 cm)
H
20.00"
(50.8 cm)
I
27.44"
(69.7 cm)
16 Part Number STH12 9/10
S250-M FOOTPRINT
A
B
D
C
E
G
I
J
H
F
Minimum Area
for Cutout
Maximum
Area for
Cutout
ABCDE
30.00"
(76.2 cm)
FGHI J
15.00"
(38.1 cm)
26.00"
(66.0 cm)
20.81"
(52.8 cm)
8.00"
(20.3 cm)
3.00"
(7.6 cm)
7.30"
(18.5 cm)
22.81"
(57.9 cm)
11.00"
(27.9 cm)
31.13"
(79.1 cm)
Part Number STH12 9/10 17
MII-250 Dimensions
A
A
39.00"
(99.1 cm)
B
12.50"
(31.8 cm)
C
30.00"
(76.2 cm)
D
1.50"
(3.8 cm)
E
9.94"
(25.2 cm)
F
13.50"
(34.3 cm)
G
20.00"
(50.8 cm)
H
30.50"
(77.5 cm)
K
28.38"
(72.1 cm)
L
22.50"
(57.2 cm)
M
21.69"
(55.1 cm)
N
1.75"
(4.4 cm)
P
28.44"
(72.2 cm)
Front View
Back View
Bottom View
3/8"-16
Thread
Mounting
Holes for
optional
legs
B
C
M
E
F
G
D
H
K
L
P
N
18 Part Number STH12 9/10
MII-250 FOOTPRINT
A
B
C
Maximum Area
for Cutout
D
F
E
3/4" NPT
Fitting
Drainpan
G
H
I
J
3/8"-16
Thread
Mounting
Holes for
Optional
Legs
Minimum
area for
Cutout:
Install
conduit to
the back of
opening to
allow
forward
movement
for service
of flex
manifold.
ABCDE
30.00"
(76.2 cm)
FGHI J
12.00"
(30.5 cm)
26.00"
(66.0 cm)
13.50"
(34.3)
8.00"
(20.3 cm)
22.00"
(55.9cm)
8.00"
(20.3 cm)
24.00"
(61.0 cm)
11.00"
(27.9 cm)
31.00"
(78.7 cm)
Part Number STH12 9/10 19
MII-302 Dimensions
A
33.25"
(84.5 cm)
B
12.50"
(31.8 cm)
C
42.75"
(108.6 cm)
D
1.38"
(3.5 cm)
E
5.59"
(14.2 cm)
F
9.10"
(23.1 cm)
G
12.16"
(30.9 cm)
H
31.00"
(78.7)
J
15.78"
(40.1 cm)
K
28.78"
(73.1 cm)
L
22.50"
(57.2 cm)
M
0.82"
(2.1 cm)
N
26.97"
(68.5 cm)
O
30.47"
(77.4 cm)
P
33.75"
(85.7 cm)
Q
37.16"
(94.4 cm)
B
C
L
K
H
D
E
F
G
J
O
Q
M
N
P
A
20 Part Number STH12 9/10
MII-302 FOOTPRINT
A
B
C
Maximum Area
for Cutout
D
F
E
3/4" NPT Fitting
Drainpan
H
I
J
K
Minimum area
for Cutout: Install
conduit to the back of
opening to allow forward
movement for service of
flex manifold.
Cutouts for Extended
Splash Panel Drain Tube
G
0.50
(1.3)
ABCD
42.75"
(108.6 cm)
EFGH
17.38"
(44.1 cm)
IJK
20.50"
(52.1 cm)
38.75"
(98.4 cm)
12.00"
(30.5 cm)
24.00"
(61.0 cm)
8.00"
(20.3 cm)
8.54"
(21.7 cm)
31.00"
(78.7 cm)
8.00"
(20.3 cm)
12.63"
(32.1 cm)
Part Number STH12 9/10 21
MII-250 Installation Kit
Carb Water to
Left Manifold
Plain Water to
Left Manifold
Syrup Tubes
to Valves
Carb Water to
Right Manifold
Plain Water to
Right Manifold
3/8" ID Tubing
from Conduit (7X)
1/2" ID Tubing
from Conduit (5X)
Use Only for
One Conduit
Plain Water
Line
Use Only for
Two Conduit
Carb Water
Line
Countertop
To Conduit
No. Part Number Description Qty.
1 00854998 Ell 1/2 x 3/8 Barb SS 2
2 00861304 Splicer 3/8 x 3/8 Barb 7
3 00861306 Splicer 1/2 x 1/2 Barb 3
4 5018595 Splicer Elbow SS 1/2 x 1/2 2
5 5030996 Elbow 1/4 x 3/8 Barb SS 7
6 5030997 Elbow 1/4 x 1/2 Barb SS 1
7 5030998 U-bend 1/2 x 1/2 WI - 1/2 Stem 3
22 Part Number STH12 9/10
Carb Water to
Left Manifold
Plain Water to
Left Manifold
Syrup Tubes
to
Valves
Carb Water
to Right
Manifold
Plain Water
to Right
Manifold
3/8" ID Tubing
from Conduit (7X)
1/2" ID Tubing
from Conduit (9X)
Use Only
for One
Conduit
Plain
Water
Line
Use Only
for Two
Conduit
Carb
Water
Line
Countertop
To Conduit
MII-302 Installation Kit
No. Part Number Description Qty.
1 00854998 Ell 1/2 x 3/8 Barb SS 2
2 00861304 Splicer 3/8 x 3/8 Barb 6
3 00861306 Splicer 1/2 x 1/2 Barb 6
4 5011751 Fitting 3/8" Y Barb 1
5 5018595 Splicer Elbow SS 1/2 x 1/2 2
6 5030996 Elbow 1/4 x 3/8 Barb SS 8
7 5030997 Elbow 1/4 x 1/2 Barb SS 4
8 5030998 U-bend 1/2 x 1/2 WI - 1/2 Stem 3
WATER AND SYRUP LINES
This kit facilitates connecting the unit to a 12-16 line
conduit, with one or two carbonated water recirculating
systems, and one or two plain water supply lines, and
maximum 8 syrup product lines.
The unit is shipped with connecting lines terminating
under the unit. It will be necessary to make a 90° turn
Part Number STH12 9/10 23
down through the counter top, to connect to the
conduit. It will also be necessary to fully insulate this
new added section before passing through the counter
top, or before hooking to main conduit.
CARB WATER LINES
• Unit has two carb water lines, one for each flex
manifold.
• Use 2 @ 1/2" x 1/2" elbow and 6-12" of 1/2"
conduit tubing to make connection bend from unit
down through hole in counter top, to mate with
conduit.
• Conduit with only two circulating carb water lines.
• Use two @ 1/2" barb U-bend adapters (invert one)
to connect the two carb circulating lines from
conduit to the two carb water lines from the unit.
Use short 1/2" conduit line to connect the two
U-bends as shown (item #8).
• Conduit with four, two sets of recirculating carb
water lines.
• Use two @ 1/2" barb U-bend adapters, to connect
each set of circulating conduit lines to each carb
water line from unit as shown (8).
PLAIN WATER LINES
• Unit has two plain water lines, one for each flex
manifold.
• Use two @ 3/8" x 1/2" elbows and 6-12" of 1/2"
conduit tubing to make connection bend from unit
down through hole in counter top, to mate with
conduit.
• Conduit with only one plain water line.
• Use one @ 1/2" U-bend adapter, to connect the
two plain water lines to one plain water line from
conduit (item #3).
• Conduit has two plain water lines.
• Use two @ 1/2" straight adapters to connect each
plain water line from unit to each plain water line
from conduit as shown (3).
24 Part Number STH12 9/10
SYRUP LINES
• Unit has eight syrup lines.
• Use seven @ 1/4 x 3/8" and one @ 1/4 x 1/2"
elbows and proper size conduit tubing to make
connection bend from unit down through hole in
counter top, to mate with conduit.
• FULLY INSULATE (no air gaps) and finish with
tape wrap, all these connections from unit, through
90° bend connection and down close to straight
conduit connection. Locate unit properly on
counter, and secure to counter . Finish connections
to conduit with 3/8" x 3/8" and 1/2" x 1/2" straight
barb connectors, and U-bend adapters, as
needed.
• FULLY INSULATE and finish with tape wrap all
these connections to the conduit.
Refrigeration Units
• Refrigeration units require stand or 6" (15.2 cm)
legs. Refrigeration unit cannot be placed directly
on floor.
• Conduit can be run through floor or ceiling chase.
• Syrup supply can be located on stand or adjacent
to refrigeration unit.
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)
Part Number STH12 9/10 25
REMOTE CONDENSER LINESET REQUIREMENTS
Important
Important
If you have a MAC Multi-Pass condenser please
add three (3) pounds additional charge.
If you exceed the 100ft line set length add
.72oz/ft of line set run (one way) for every foot
over 100ft, to the UNIT 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 ri se 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.
26 Part Number STH12 9/10
3. The easiest method to create a trap is to bend the
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
Discharge Line
Condenser Trap
tubing (smoothly , no kinks) into the trap form.
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 remote condensing line size
specifications for the specific model be
maintained. The specifications are 1/2" discharge
and 3/8" liquid lines.
Part Number STH12 9/10 27
Safe Installation Dos and Don’ts
! Warning
!
Warning
! Warning
Read the following warnings before beginning an
installation. Failure to do so may result in
possible death or serious injury.
• Adhere to all National and Local Plumbing
and Electrical Safety Codes.
• Turn OFF incoming electrical service
switches when servicing, installing, or
repairing equipment.
DO NOT throw or drop a CO
•
Secure the cylinder(s) in an upright position
with a chain.
DO NOT store CO
•
above 125°F (51.7°C) near furnaces, radiator
cylinders in temperature
2
or sources of heat.
cylinder.
2
DO NOT connect the CO
the product container. Doing so will result in an
cylinder(s) directly to
2
explosion causing possible death or injury. It is best
to connect the CO
cylinder(s) to a regulator(s).
2
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
gas causes tremors,
2
gas leak is suspected,
2
lines and pumps
2
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
28 Part Number STH12 9/10
monitors must be utilized.
2
2
• 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.
• DO store CO
• DO NOT exhaust CO
into an enclosed area, including all types of walk-in
cylinders and gauges with care.
2
cylinder(s) in well ventilated areas.
2
gas (example: syrup pump)
2
coolers, cellars, and closets.
• 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).
NOTE: All utility connections and fixtures must be
sized, installed, and maintained in accordance with
Federal, State, and Local codes.
Part Number STH12 9/10 29
Location Requirements
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)
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
Up to 12 gal / 45 L
of syrup/day or
560 drinks/day
(4,000 gal/year)
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
Up to 21 gal / 79 L
of syrup/day or
980 drinks/day
(7,500 gal/yr)
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 44M
250 ft / 80 m
Maximum
Conduit Length
Up to 32 gal / 121 L
of syrup/day or
1400 drinks/day
(11,500 gal/yr)
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
Up to 42 gal / 159 L
of syrup/day or
2000 drinks/day
(15,000 gal/yr)
Model 50M
350 ft / 107 m
Maximum
Conduit Length
Model 50M
350 ft / 107 m
Maximum
Conduit Length
Model 50M
350 ft / 107 m
Maximum
Conduit Length
Model 50M
350 ft / 107 m
Maximum
Conduit Length
* 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 Author ized Distributor or Manitowoc Bever age Systems
(MBS) for more information.
SODA REFRIGERATION UNIT “QUICK-PICK” SELECTION CHART
30 Part Number STH12 9/10
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