Multiplex MII-250 Service Manual
MII SERIES
MII-250/302 Beverage/Ice Dispenser with Flex Manifold
INSTALLATION & SERVICE GUIDE
P ARTNUMBER 5031216
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.
October 17, 2006 REV3
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 Troubleshooting Guide within this manual for service assistance.
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 _____________________________________________________________________
UNPACKING AND INSPECTION
Note: The dispenser 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 ........................................................................................................ 3
UNP ACKING AND INSPECTION......................................................................... 3
WARRANTY INFORMATION...............................................................................3
SAFETY ............................................................................................................... 6
IMPORT ANT SAFETY INSTRUCTIONS ........................................................................... 6
CARBON DIOXIDE WARNING......................................................................................... 6
QUALIFIED SERVICE PERSONNEL................................................................................ 6
SHIPPING, STORAGE, AND RELOCATION ..................................................................... 6
ADDITIONAL WARNINGS................................................................................................ 6
GROUNDING IN STRUCTIONS........................................................................................ 7
INSTALLATION....................................................................................................8
PRE-INSTALLATION CHECK LIST .................................................................................. 8
UNIT INST ALLATION ....................................................................................................... 8
MII-250 INST ALLATION KIT ............................................................................................. 9
MII-302 INST ALLATION KIT ........................................................................................... 10
WA TER & SYRUP LINES ................................................................................................11
DRAINAGE OPTIONS .................................................................................................... 12
BAG-IN-BOX (B-I-B) SYSTEM ....................................................................................... 13
TOP MOUNTED ICEMAKER REQUIREMENTS ............................................................. 14
ICE FLOW RESTRICTOR............................................................................................... 14
ROCKING CHUTE ICE DELIVERY SWITCH ADJUSTMENT.......................................... 15
BAFFLE FOR MANITOWOC™ CUBERS....................................................................... 16
BAFFLE FOR "Q" SERIES ICE MACHINES .................................................................. 16
MANUAL FILL LID FOR DISPENSERS WITH A CUBER ............................................... 16
GENERAL INSTRUCTIONS FOR REMOVAL OF GEAR MOTOR .................................. 17
MII-250 PLUMBING DIAGRAM ...................................................................................... 18
MII-302 PLUMBING DIAGRAM ...................................................................................... 18
OPERATION ...................................................................................................... 19
UNIT INSPECTION ......................................................................................................... 19
ICE RECOMENDED FOR DISPENSING......................................................................... 19
ICE STORAGE AND DISPENSING................................................................................. 19
BEVERAGE VALVES ..................................................................................................... 19
ROCKING CHUTE ICE DISPENSING............................................................................. 19
LEGS .............................................................................................................................. 19
MII-250 MEASUREMENTS & SPECIFICATIONS ............................................................ 20
MII-302 MEASUREMENTS & SPECIFICATIONS ............................................................ 21
MII-250 FOOTPRINT....................................................................................................... 22
MII-302 FOOTPRINT....................................................................................................... 23
Installation and Service Manual
TABLE OF CONTENTS
CARBONA TION ............................................................................................................. 24
SYRUP DELIVERY SYSTEM.......................................................................................... 24
RACKING ....................................................................................................................... 24
B-I-B ............................................................................................................................... 24
PUMPS ........................................................................................................................... 24
AUTO BAG SELECTORS............................................................................................... 24
BACK ROOM PACKAGE ............................................................................................... 25
115V/220V NON ADJUST ABLE AGITATION TIMER ...................................................... 26
USER MAINTENANCE ...................................................................................... 27
PREVENTATIVE MAINTENANCE .................................................................................. 27
HOW TO DISASSEMBLE FOR CLEANING OR MAINTENANCE .................................. 27
DAILY CLEANING .......................................................................................................... 30
MONTHLY CLEANING ................................................................................................... 31
BEVERAGE SYSTEM CLEANING ................................................................................. 32
BAG-IN-BOX SYSTEM ................................................................................................... 32
EXPLODED VIEWS, PARTS & DIAGRAMS ..................................................... 34
MII-250 EXPLODED VIEW WITH 8 VALVE FLEX MANIFOLD........................................ 34
MII-250 PARTS LIST ...................................................................................................... 35
MII-302 EXPLODED VIEW WITH TWO 6 VALVE FLEX MANIFOLDS ............................ 36
MII-302 PARTS LIST ...................................................................................................... 37
MII-302 CARB WATER TUBING ..................................................................................... 38
STRIP LID ASSEMBLY (5030332) .................................................................................. 39
MII-250 115V WIRING DIAGRAM ................................................................................... 39
MII-302 115V WIRING DIAGRAM ................................................................................... 40
TROUBLESHOOTING ....................................................................................... 41
INDEX................................................................................................................. 47
5
SAFETY
IMPORTANT SAFETY INSTRUCTIONS
Carefully read all safety messages in this manual. Learn how to operate the MII unit properly . Do
not allow anyone to operate the unit without proper training and keep it in proper working condition. Unauthorized modifications to the MII 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 IN STRUCTIONS
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 rep air 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
7
INSTALLATION
PRE-INSTALLATION CHECK LIST
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
Post Mix System:
CO
regulator set
2
Beverage dispenser
Beverage tubing
CO
tank
2
Carbonator
Stepless (Oetiker) clamps
Chain for CO
tank
2
Bulk Syrup System also:
Syrup connectors for Bulk tank
Gas connectors for Bulk tank
Bulk syrup tanks
Double Check:
Do you have enough space to install the dis-
penser or a dispenser and top mounted cuber?
Does the 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?
Also consider the location of the following items before installation:
• Water line
• Drain
• Power outlet
• Heating and air conditioning ducts
UNIT INSTALLATION
1. Place the dispenser in the desired location.
2. Run the beverage lines and water lines (make sure
to install the water connections to the proper inlets).
(Refer to plumbing diagrams)
3. Install drain plumbing and insulate.
(See Drainage Options)
4. Set flexible manifold for correct drink settings.
5. Fill bin with ice.
6. Connect power supply.
7. Brix beverage valves.
10. Meet all code requirements.
INSTALLATION
MII-250 INSTALLATION KIT
Installation and Service Manual
9
INSTALLATION
MII-302 INSTALLATION KIT
Installation and Service Manual
INSTALLATION
WATER & 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 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 (2) carb water lines, one for each flex
manifold.
• Use 2 @ ½” x ½” elbow and 6-12" of ½” conduit
tubing to make connection bend from unit down
through hole in counter top, to mate with conduit.
• Conduit with only two (2) circulating carb water lines
• Use 2 @ ½” barb U-Bend adaptors (invert one) to
connect the two carb circulating lines from conduit
to the two carb water lines from the unit. Use short
½” conduit line to connect the two U-bends as shown
(option to 8).
• Conduit with four (4), two sets of recirculating carb
water lines
• Use 2 @ ½” barb U-Bend adaptors, to connect each
set of circulating conduit lines to each carb water
line from unit as shown (8) .
PLAIN WATER LINES:
• Unit has two (2) plain water lines, one for each flex
manifold.
• Use 2 @ 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 (1) plain water line
• Use 1 @ ½” U-bend adaptor, to connect the two plain
water lines to one plain water line from conduit (option to 3.)
• Conduit has two (2) plain water lines
• Use 2 @ ½” straight adaptors to connect each plain
water line from unit to each plain water line from
conduit as shown (3.)
SYRUP LINES:
• Unit has eight (8) syrup lines
• Use 7 @ ¼ x 3/8" and 1 @ ¼ x ½” elbows and
proper size conduit tubing to make connection bend
from unit down through hole in counter top, to mate
with conduit.
• FULL Y 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 as shown in Unit Installation Instructions. Finish connections to Conduit with 3/8"
x 3.8" and ½” x ½” straight barb connectors, and Ubend adapters, as needed.
• FULLY INSULA TE and finish with tape wrap, all these
connections to the conduit.
11
INSTALLATION
DRAINAGE OPTIONS
The drains for MII Series connects to the drain pan.
Option One
Drainage through the bottom of the unit:
Radiator clamp
90 elbow fitting
Radiator clamp
Flexible tubing
Option Tw o
Drainage through the back of the unit:
Straight fitting
Radiator clamp
Flexible tubing
Rear of UnitDrain with Extended Splash Panel
Holes for
beverage
lines
Holes for
drain pan
drain
MII with Valves
System Overview
INSTALLATION
BAG-IN-BOX (B-I-B) SYSTEM
Dispenser
5
Installation and Service Manual
NOTE:
This is a simplified schematic to
show the basic operation of the
beverage system.
Countertop
BIB
Syrup Pump
1
Tap Water
Tap Water
Multiplex
3
CARBONATED WATER
NON-CARBONATED WATER
CARBONATED WATER
SYRUP
SYRUP
SYRUP
SYRUP
90
1800
60
2
CO
2
CO
2
CO
Cylinder
2
SYRUP
2
SYRUP
CO
Bag-In-Box
Syrup
Carton
Drawing #: 5010102-0
13
INSTALLATION
TOP MOUNTED ICEMAKER REQUIREMENTS
1 Location - Avoid placing the dispenser and/or ice
machine near heat sources such as radiators, ovens, refrigeration equipment and direct sunlight.
2 Clearances - Six inch (15.2 cm) clearance on all
sides of the icemaker is needed.
3 Front of icemaker to be flush with front of dis-
penser- The front of the icemaker should be flush
with the front of the dispenser, as shown in the drawing above. Because the icemaker is flush with the
1
6"
(15.2 cm)
2
cuber
6" (15.2 cm)
clearance
for cuber
6"
(15.2 cm)
front of the dispenser, some icemakers may overhang at the back of the dispenser.
4 Drains - A separate drain line is required for the ice
machine, in addition to a drain line for the ice/beverage dispenser.
5 MII Series dispensers require an adapter kit to
install some top-mounted icemakers. Contact your
local Multiplex distributor for the correct adapter kit.
6" (15.2 cm)
6" (15.2 cm)
5
3
3
4
4
NOTE: For full information about icemaker installation, including plumbing lines connections and electri-
cal requirements, see the icemaker installation manual.
ICE FLOW RESTRICTOR
For all MII, MD and MDH Series dispensers an Ice flow
restrictor is available. This ice flow restrictor decreases
the amount of ice allowed to enter the ice chute by blocking a small area at the entrance of the dispenser chute.
This in turn restricts the flow of ice that is dispensed in to
your cup.
Please refer to the instructions included in kit #5013822
Ice Flow Restrictor
for more information on how to install
.
Installation and Service Manual
INSTALLATION
ROCKING CHUTE ICE DELIVERY SWITCH ADJUSTMENT
1 T o properly adjust the switch, first unplug the power
cord to the unit then remove the merchandiser. This
will give you access to the ice delivery switch located on the left side of the rocking chute.
2 Begin by observing the chute by slowly pushing
against the rocking chute. When the ice delivery
switch clicks, measure the distance from the door
stops on the rocking chute bracket to the door. The
distance between the two should be no more than
1/4", but no less than 1/16".
3 The left side of the rocking chute has a tab that
pushes up on the ice delivery switch. To adjust it,
use needle nose pliers and bend the arm of the
switch up or down in order to change the point where
the tab makes contact with the switch arm.
15
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