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
Page 2
Page 3
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.
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.
Page 7
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
Page 8
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:
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.
Page 9
INSTALLATION
MII-250 INSTALLATION KIT
Installation and Service Manual
9
Page 10
INSTALLATION
MII-302 INSTALLATION KIT
Page 11
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
Page 12
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
Page 13
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
Page 14
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
.
Page 15
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
Page 16
INSTALLATION
BAFFLE FOR MANITOWOC™ CUBERS
When installing a Manitowoc™ “S” series Ice Machine on a MII dispenser, a baf fle kit is required for proper inst allation. The baffle kit is designed to prevent ice from lying against the front of the ice machine, and melting down the
front of the dispenser. There are two different baffle kits available, one kit is for the 30" wide “S” series ice machine,
and the other kit is for the 22" wide “S” series ice machine.
These two Kits are available through your local Manitowoc Distributor . List prices may be subject to change without
notification. Please call your local parts distributor for current pricing before ordering.
Ice Maker Baffle Installation:
1. Remove both front panels.
2. Examine the ice machine to see if the machine has
four screws on the lower front plastic panels.
3. If there are screws, remove them from the countersunk holes on the front surface of the machine, save
the screws.
4. Install the deflector, using the four screws removed
in step three.
5. Four screws and two backing plates are in the kit.
6. If there are no screws on the ice machine (step 2),
pierce the thin plastic countersunk holes, install the
backing plates and install the deflector using the
screws from the kit.
7. Replace the front panels.
Part NumberDescription
5029518 ........................ Baffle Kit 30”
5029517 ........................ Baffle Kit 22”
BAFFLE FOR "Q" SERIES ICE MACHINES
1. Position baffle on top of water well with tab on the
front and the other tab inside the water well.
2. Mount the baffle on the left side of the ice maker
using the hole and screw provided.
MANUAL FILL LID FOR DISPENSERS WITH A CUBER
If you are top mounting your MII Series dispenser with a
cuber, you will require a lid for the manual fill area at the
top, front of the dispenser.
If you ordered a dispenser and a cuber at the same time,
the manual fill lid was included with the unit. The manual
fill lid can be ordered from your local Multiplex distributor.
Page 17
Installation and Service Manual
INSTALLATION
GENERAL INSTRUCTIONS FOR REMOVAL OF GEAR MOTOR
These instructions are provided as a guide for the removal of the gear motor. Depending on the model
number of your dispenser, these instructions may vary slightly.
1. Disconnect power from the electric receptacle.
2. Remove all ice from the ice storage bin of the dis-
penser.
3. Remove the paddle wheel pin from the paddle wheel
/ agitator assembly inside the dispenser bin.
4. Remove the agitator assembly from the dispenser
bin by pushing the agitator to the back of the bin.
Angle the front of the agitator to the side. Pull the
agitator forward then out of the dispenser.
5. Remove the paddle wheel from the dispenser by
pulling the hub of the paddle wheel to the back of
the bin and off the gear motor shaft.
Removable front
merchandiser panel
6. Remove the splash panel from the dispenser and
expose the gear motor.
7. Disconnect the electric connector from the gear motor wire leads.
8. Remove the pin in front of the gear motor.
9. You should be able to remove the gear motor from
the dispenser.
10. To install a replacement gear motor, reverse this
procedure.
Agitator
Ice bin
Beverage valve
(option)
Water line
Gear motor
Drain pan
Ice
Paddle wheel
Rocking chute
ice dispense chute
17
Page 18
INSTALLATION
MII-250 PLUMBING DIAGRAM
MII-302 PLUMBING DIAGRAM
Page 19
Installation and Service Manual
OPERATION
UNIT INSPECTION
Thoroughly inspect the unit upon delivery. Immediately report any damage that occurred during transportation to
the delivery carrier. Request a written inspection report from a claims inspector to document any necessary claim.
ICE RECOMENDED FOR DISPENSING
MII dispensers are designed to dispense hard, cube ice up to one-inch square. The ice shapes and sizes listed
above are recommended for dispensing. Warm “Super Cooled” Ice Before Dispensing “Super Cooled” ice is
not recommended for dispensing. “Super cooled” ice is ice that has been stored in freezers below 32oF. Should
it be necessary to temporarily use “super cooled” ice, allow the ice to warm at room temperature for 25 to 30
minutes before placing the ice in the dispenser.
ICE STORAGE AND DISPENSING
As the customer presses the rocking chute, the arm at the top left rear of the chute pushes upward on the door lock.
The door opens until it contacts the stops in the mounting bracket s. The plastic arm on the ice chute also activates
the lever of the ice dispensing switch. When activated, the micro switch starts the gear motor . The gear motor turns
the paddle wheel and agitator arm.
The paddlewheel carries ice. Periodic agitation is optional on the MII-150 and MII-175 and is standard on the MII200, MII-250, MII-302 and MII-402. During periodic agitation, the paddle wheel and agitator turn for approximately
three seconds every three and one half-hours. The door lock prevents ice from being dispensed during the agitation cycle.
BEVERAGE VALVES
Post-mix beverage valves are designed to precisely meter the flow of both water and syrup to obtain the proper
mixing ratio. The syrup and soda water components of the post-mix beverage are mixed as they leave the beverage valve.
ROCKING CHUTE ICE DISPENSING
As the customer presses the rocking chute, the arm at the top left rear of the chute pushes upward on the door lock.
The door opens until it contacts the stops in the mounting bracket s. The plastic arm on the ice chute also activates
the lever of the ice dispensing switch. When activated, the micro switch starts the gear motor . The gear motor turns
the paddle wheel and agitator bar.
LEGS
Legs are optional equipment with most MBE dispensers. Standard legs are four-inch (10.2 cm) tall stainless steel
legs. MII 302 and MII 402 cannot be placed on legs. When installing legs on a MII Series dispenser, leg braces
should be used. These are metal braces fitting side to side under the dispenser that reinforce the leg attachment
area. It is recommended if an icemaker is installed on top of the dispenser, legs should not be installed.
19
Page 20
Installation and Service Manual
FRONT VIEW
B
OPERATION
MII-250 MEASUREMENTS & SPECIFICATIONS
BACK VIEW
H
A
K
L
M
BOTTOM VIEW
3/8"-16 Thread
Mounting Holes
for optional legs
E
F
G
Unit
MII-250
C
D
A
39"B12.5"C30"D1.5"E9.938"F13.5"G20"H30.5"K28.375"L22.5"M21.688
MII-250
Standard
Features
Lighted Mercha ndiser, "i ce " graphics, key switch, stai nless steel legs, drain kit, Li ghted
Merchandiser, "ice" graphics, key switch, stainless steel legs, drain kit,
Dimensions30" W x 30.5" D x 39"H (add 1.25 to height for lid)
Shipping
exte nds fro m drain pan. A second fitt ing extends from bin. )
Machine
Compatibility
Graphic Area
Dimensions
Manual fill or top-mount with compatible 22" and 30" wide ice machines. Contact factory for
baffle and ice wide ice machines. Contact factory for baffle and ice
Physical trim: 29.5"W x 16.625"H 74.93W x 42.228H (cm) Visual area: 28.5"W x 15.625"H
72.39W x 3 9.688H (cm)
ServiceMotor, drain and electrical connecti ons are front serviceable.
OptionsWilshi re FF V standard beverage valves (other valves also available), extended splash
panel, splash guards, adapter kits for top-mounted i ce machine applications.
DrainTwo pre -installed 3/4 " (1 .9 cm) PVC ( N.P.T.) d r a in fitti ngs e xtends fro m d r a in pan. Ice
bin drains directly into drain pan for front clean out, no hook up necessary.
Machine Compatib ilityManual fill or top - mount with comp a tible 30 " wi de ice machine. Certain to p - mounted
machines may reduce storage capacity. Contact distributor or MBS for baffle and i ce
mak e r lid re q ui r e me nts fo r to p-mounted ice ma chine appli c a tio ns.
Graphic Area DimensionsStandar d Physi cal trim - 4 2.62 5" W x 11" H (108.2 W x 27.94 H (c m) )
Visual area - 41.75" W x 10.062" H; (106 W x 25.56 H (cm))
Extende d Merc hand i s er:Physi c a l trim - 42 .5" W x 23 .813 " H (10 7 .9 5 W x 60 .4 9 H (c m)
Visual area - 41.624" W x 22.875 " H (105.72 W x 58.1 H (cm))
ServiceMotor, drain and electrical connections are front serviceable.
OptionsThe MII-302 will accommodate up to 12 Flomatic 464 (at 3-4 oz/sec) beverage valves.
F-464 valves are available in sanitary lever, push button, Autofill lever and portion
contro l. Other valves a vailab le , contact fac to r y for details. Le g ki ts not a vailab le fo r
MDH- 3 0 2 . Other o p tions: re g ulato r s , carbonator, sid e wa ter lever installa ti on kits a nd
side splash panels.
21
Page 22
Installation and Service Manual
OPERATION
MII-250 FOOTPRINT
22
Page 23
OPERATION
MII-302 FOOTPRINT
Installation and Service Manual
23
Page 24
Installation and Service Manual
OPERATION
CARBONATION
The purpose of the carbonator is to take regular tap water at street water pressure (minimum 20 PSI dynamic or
flowing pressure) 1/2” water line and increase the water to beverage system pressure (usually 100 PSI). This water
is then combined with the CO2 gas. Because the water and gas are at the same pressure, the CO2 will dissolve into
the water. Chilling the mixture before dispensing will assist in locking the carbon dioxide into the water. After
dispensing, the CO2 may be unlocked from the liquid. The CO2 will gradually leave the liquid due to pressure and
temperature changes.
Components
The components of the carbonator are: water pump, an
electric motor to operate the pump, carbonator tank
where the water & CO2 mix, and a water level control.
Operation
Carbon Dioxide (CO2) leaves the storage tank and arrives at the carbonator tank through the gas inlet. Water
supply enters the carbonator pump inlet at regular street
water line pressure (minimum 20 PSI dynamic or flowing pressure). The water pump increases the pressure
of the water, which allows the water to flow into the carbonator tank. The CO2 and the water mix together in the
carbonator to produce the carbonated water that is then
sent to the soda dispenser.
The agitation of the water & CO2 together in the tank
under high pressure creates the soda water. The quality
of carbonation (percent of CO2 mixed in the water) increases as the water temperature decreases and exposure time increases.
The water level in the carbonator tank is controlled by a
water level control in the tank. This control turns the pump
motor off and on to maintain a preset level of liquid in the
tank. The water level control may be electronic probes
or a mechanical float.
SYRUP DELIVERY SYSTEM
Your syrup location can vary depending on the volume of beverages served and ease of accessibility. Your beverage system may set in a back storage room or under the counter of the dispenser. Configurations are almost
limitless. Check the temperatures expected for the storage location. Adverse temperatures can affect the storage
and quality of beverage products. It is recommended the temperature of storage location should not fall below 40
F or rise above 90o F.
RACKING
Regardless if you are working on a B-I-B or Figal system, a place will be designated for placement of the product.
A rack (or shelf) system af fords systematic placement and complete usage of the beverage paid for. The B-I-B rack
allows the boxes to lay properly for syrup dispersal. Please check with your B-I-B syrup supplier. Some boxes must
be slightly tilted down, while others may be in virtually any position. The Figal tank rack keeps the newer and full
tanks organized at one end of the beverage line with the partial tanks at the other.
o
B-I-B
The Bag-In-Box system refers to a plastic disposable bag. The B-I-B normally contains 5 gallons of syrup, however
some locations offer 2 1/2 gallon B-I-B units. This plastic bag is then held inside a cardboard or other cont ainer. BI-B systems are for post-mix applications only.
PUMPS
The syrup in a B-I-B system is delivered to the beverage system through gas operated pumps. These pumps
extract the syrup out of the bags forcing the syrup throughout the system.
AUTO BAG SELECTORS
These are used on higher volume B-I-B systems where two or more bags of the same product are connected to
one pump and one system. An auto bag selector is essentially a valve that automatically changes from one bag (or
series of bags) to another bag (or series of bags) of syrup as the bags empty, allowing a constant flow of product.
24
Page 25
OPERATION
BACK ROOM PACKAGE
Installation and Service Manual
1. Incoming tap water - should be at a minimum dy-
namic pressure of 40 psi and maximum static pressure of 55 psi.
2. Carbonator Water pump motor - Powers the water
pump. The water pump motor is part of the carbonator pump deck.
3. Carbonator Water pump - Pumps tap water into the
carbonator tank. The water pump is part of the carbonator.
4. Internal/External Carbonator tank - Combines CO
gas and tap water to form carbonated water . The “carbonator” is the carbonator tank, water pump and water pump motor.
5. CO2 cylinder - Holds highly pressurized carbon dioxide (CO2). The CO2 cylinder is a steel or aluminum
cylinder tank. CO2 gas flows through the primary pressure regulator.
6. BIB pressure gauge - Set for a minimum of 60 psi.
Indicates CO2 pressure going to B-I-B pumps.
7. Primary pressure regulator - Lowers the CO2 gas
pressure, to 100 psi, so the CO2 gas will be at the
proper pressure to enter the carbonator regulator.
8. Lowered outgoing pressure - Set for 75 psi. Gauge
indicated lowered outgoing pressure from the CO
cylinder after being routed through the primary pressure regulator at 100 psi..
9. Secondary pressure regulator - Lowers the CO
gas pressure before the CO2 gas flows to the syrup
2
pump. CO2 pressure, activates the syrup pump.
10. Syrup pump - Draws syrup out of the bag-in-box
syrup package. Syrup flows through the syrup lines
to the dispenser for chilling, then dispensing. There
is a syrup pump for each bag-in-box syrup system.
11. Bag-In-Box syrup cartons - Box which contains a
plastic bag, filled with syrup.
2
2
25
Page 26
Installation and Service Manual
OPERATION
1 15V/220V NON ADJUSTABLE AGITATION TIMER
The agitation timer on this unit is equipped with test pins. This allows you to test the timer by removing the jumper
between the two pins. When the jumper is removed the timer will cycle every 55 seconds if it is operating correctly . If the
timer is wired correctly and does not cycle approximately every 55 seconds when the jumper is removed, replacement
of the timer may be necessary . Make sure to replace the jumper pins when finished.
NOTES: This timer is re-settable, timed agitation every 3.5 hours from last dispense on power supply broken. Never
operate in normal mode without test pins in place, damage could occur.
26
Page 27
Installation and Service Manual
USER MAINTENANCE
PREVENTATIVE MAINTENANCE
Preventative maintenance is a vital part of keeping your MII dispenser in top condition. Following the guidelines
below will assist you in continued trouble free operation of your unit.
1. Conduct daily maintenance of the machine.
2. Perform monthly maintenance of the machine.
3. Perform periodic maintenance and sanitizing of beverage system.
4. Do not overfill the dispenser bin with ice.
5. Do not allow the dispenser to sit for prolonged periods of non use with ice in the bin.
6. Most ice dispenser service problems are caused by
low usage of the ice dispenser.
7. Do not allow ice to remain in the bin more than a day
in order to prevent ice from freezing together and/or
stagnant ice.
HOW TO DISASSEMBLE FOR CLEANING OR MAINTENANCE
D
C
E
F
G
A
B
Possible excess ice storage reasons:
•Storage capacity exceeds daily requirements.
•Low demand during the off season.
•Dispenser oversized with future growth in mind.
Lower ice storage to meet one day’s needs. If you manually fill ice, fill only with the appropriate amount of ice. Fill
the dispenser with fresh ice each morning. Do not fill the
dispenser at night just before shut down. Ice cubes can
freeze together if not dispensed.
Contact MBE at 1-800-367-4233 for more information
about our ProActive Maintenance Program.
NOTE: Sanitize the ice dispenser at Initial Start-UP
in addition to monthly sanitizing. You will need
screwdriver in order to disassemble.
Disassemble parts in the following order:
A. Merchandiser
B. Ice chute
C. Paddle wheel pin
D. Agitator
Accessing a Dispenser Bin T op Mounted with a Manitowoc Cuber:
1. Remove the front panel of the ice machine.
2. Remove the ice deflection baffle. This will give you
access to the dispenser bin.
Accessing a Dispenser Bin that is Top Mounted with
a Manitowoc Cuber and Large Extended Merchandiser
in front of the Cuber:
1. Access to the bin is possible through the strip lids on
the side of the Dispenser.
Disassembling the Dispenser Parts for Bin Cleaning:
1. Remove the front panel of the Manitowoc ice maker.
2. If the Manitowoc ice maker is operating, wait for the
sheet of ice to fall into the dispenser bin.
When the ice sheet falls into the dispenser bin, immediately
place toggle switch of the ice machine to the “OFF” position.
If the Manitowoc ice maker is NOT operating, place the
toggle switch of the ice machine to the “OFF” position.
3. On models without a top mounted cuber, remove the
plastic lit from the top of the dispenser.
4. Remove all ice from the dispenser.
5. Disconnect electrical power to the dispenser.
6. On the MII-302 dispenser only, remove the strip lids
off the top left and top right of the dispenser bin.
7. For the MII-302 dispenser only, there is a left bin and
a right bin. Clean and sanitize one bin, then follow
the same procedures on the second bin.
E. Paddle wheel
F . Bin liner & Support
G . Paddle wheel Area
27
Page 28
Installation and Service Manual
HOW TO DISASSEMBLE FOR CLEANING OR MAINTENANCE
USER MAINTENANCE
15
11
10
8
9
14
15
Agitator arm and paddlewheel pin:
8. Rotate the agitator arm so the paddle wheel pin
handle is pointing up, toward the ceiling.
9. Prepare agitator pin for removal by removing the
stainless steel split ring.
10. Then remove the paddle wheel pin from the hole in
the agitator.
11 . Push the agitator bar toward the back of the unit
until the agitator is free of the paddle wheel hub.
Paddlewheel, bin liner and paddle wheel area:
12. Move the front of the agitator to one side and slide
the agitator forward until the rear of the agitator
shaft is clear of the bushing.
13. Remove the agitator from the bin area.
14. Slide the paddle wheel from its shaft.
15. Loosen the four knurled fasteners that hold the bin
liner in place.
16. Remove the bin liner.
16
17. Remove the paddle wheel area from the bin.
18. Discard the remaining ice in the bin.
17
28
Page 29
Installation and Service Manual
USER MAINTENANCE
HOW TO DISASSEMBLE FOR CLEANING OR MAINTENANCE
Disassemble the rocking chute:
1. Loosen the two knurled fasteners that hold the merchandiser in place.
2. Remove the merchandiser.
1
3. Remove outer bracket.
2
4. Remove door lock.
5. Remove door.
6. Remove ice chute.
4
5
6
29
Page 30
Installation and Service Manual
USER MAINTENANCE
DAILY CLEANING
All cleaning must meet your local health department regulations. The following cleaning instructions are
provided as a guide.
CAUTION: Use only warm soapy water to clean the exterior of the tower . Do not use solvent s or
other cleaning agents. Do not pour hot coffee into the drain pan. Pouring hot coffee down the
drain pan can eventually crack the drain pan, especially if the drain pan is cold or still contains ice.
Merchandiser
Key Switch
Splash Panel
Counter
Soda Valves
Carb/Non-Carb Water Manifold
and Syrup/Soda Inlets
(Behind Splash Panel)
Drainpan Grid
Drainpan
Clean the exterior and drain pan:
1. Turn of f the key switch located on either right or left
side of the unit.
2. Lift the grid and remove it from the drain pan.
3. Using mild soap, warm water and a clean cloth, wipe
the drain pan and splash panel. Then, rinse with clean,
warm water. Allow plenty of warm (not hot) water to
run down the drain of the drain pan, to remove syrup
residue that can clog the drain opening.
4. Wash the grid, then rinse with clean water. Place
the grid back in the drain pan.
5. Wash all exterior surfaces of the unit with warm
water and a clean cloth. Wipe again with a clean,
dry cloth.
30
Clean the dispensing valves:
6. Remove nozzles and diffusers from beverage
valves.
7. Rinse nozzle and diffuser with warm, clean water.
8. Clean nozzles and diffusers with soapy water and
a soft bristle brush.
9. Clean the underside of the beverage valves with
warm, soapy water. Rinse with clean damp towel.
10. Replace nozzles and diffusers on valves.
11 . Turn on the key switch.
Page 31
USER MAINTENANCE
MONTHLY CLEANING
Clean and sanitize the ice bin:
1. Unplug unit and remove all ice from the ice bin.
2. Mix a solution of mild detergent to clean the dispenser
bin and components.
3. Wash the ice bin using a sponge and the mild detergent solution.
4. Using the mild detergent solution and a soft bristle brush
or clean cloth, clean the following dispenser parts:
• Entire bin
• Paddle wheel
• Paddle wheel area
• Agitator
• Paddle wheel pin
• Ice Chute
• Rear bushing
• Motor shaft
• Strip lids (where applicable)
5. Rinse all the parts in clean, running water.
6. Prepare 2 gallons of sanitizing solution by mixing a 1/
ounce of household bleach (that contains 5.25% sodium hypochlorite) with 2 gallons of 120°F water. The
mixture should not exceed 100 PPM of chlorine. Or
mix a solution of any approved sanitizer, following the
directions for mixing and applying the sanitizer..
7. Sanitize the ice bin and cold plate with the sanitizing
Installation and Service Manual
solution for at least 10 seconds.
8. Allow to air dry. Do not rinse.
Re-assembling the dispenser parts:
9. Re-assemble parts in the following order:
• Bin liner
• Paddle wheel
• Agitator
• Paddle wheel pin
• Ice chute
• Merchandiser
10. Hand tighten all knurled fasteners.
11. Pour in fresh, sanitary ice and replace the plastic lid
on the top of the dispenser.
12. Plug in the unit’s electrical cord.
13. Check for proper ice dispensing.
2
Removable front
merchandiser panel
Beverage valve
(option)
Water line
Gear motor
Drain pan
Agitator
Ice bin
Ice
Paddle wheel
Rocking chute
ice dispense chute
31
Page 32
Installation and Service Manual
USER MAINTENANCE
BEVERAGE SYSTEM CLEANING
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.
BAG-IN-BOX SYSTEM
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).
2. Disconnect the “syrup-line side” of the bag-in-box
connector.
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.
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.
32
Page 33
USER MAINTENANCE
BAG-IN-BOX SYSTEM
Installation and Service Manual
10. Connect Bucket 3 to system.
11. Draw sanitizing solution through system until solution is dispensed.
12. Repeat step 1 1 until all syrup circuit s 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 p arts
(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 BIB’s.
21. Draw syrup through system until only syrup is dispensed.
22. Discard first 2 drinks.
33
Page 34
Installation and Service Manual
EXPLODED VIEWS, PARTS & DIAGRAMS
MII-250 EXPLODED VIEW WITH 8 VALVE FLEX MANIFOLD
34
Page 35
Installation and Service Manual
EXPLODED VIEWS, PARTS & DIAGRAMS
MII-250 PARTS LIST
35
Page 36
Installation and Service Manual
EXPLODED VIEWS, PARTS & DIAGRAMS
MII-302 EXPLODED VIEW WITH TWO 6 VALVE FLEX MANIFOLDS
36
See 302 Carb Water Tubing for more detail
Page 37
EXPLODED VIEWS, PARTS & DIAGRAMS
MII-302 PARTS LIST
No. Part Number Description
10101702BSHG MUSHROOM INJ MLD
200200196 LABEL #1 TUBE ID
300200197 LABEL #2 TUBE ID
400200198 LABEL #3 TUBE ID
500200199 LABEL #4 TUBE ID
600200200 LABEL #5 TUBE ID
700200201 LABEL #6 TUBE ID
800200202 LABEL #7 TUBE ID
900200203 LABEL #8 TUBE ID
1000200204 LABEL #9 TUBE ID
1100200205 LABEL #10 TUBE ID
1200205611 LABEL #11 TUBE ID
1300557500 VLV DOLE FFV 3.00Z/SEC
1400900601 BOLT 1/4-20X5/8" SS HHCS
1500901904 1/4 LOCK WASHER
161000703MICROSWITCH
172601415PADDLEWHEEL “REF. DWG. 7060001”
185000868MOTOR AY-62
195001051PADDLE WH 9.75 AREA
205001776MOUNT MOTOR
215002507MOUNT ROCKING CHUTE DOOR LEFT
225002508DOOR ROCKING CHUTE
235002509LOCK ROCKING CHUTE DOOR
245002657MOUNT ROCKING CHUTE DOOR RIGHT
255003709MERCH SPOTWELD
265003963BRACKET ROCKING CHUTE OUTER
275004850CHUTE RC NARROW
285009173MEDALLION METAL
295009529AGITATOR U-BAR
Installation and Service Manual
No. Part Number Description
305010337ELBOW 90 DEGREE RUBBER
315010452PIN U-BAR AGITATOR
325010639DRAINPAN W/O GRID BLK
335011940SCREW 8-32 X 1/2
345011953SCR 10-24X1-1/4 SELF TAP
3550129448-32 X 1/2 FLAT HEAD SCREW
365013803Restrictor Ice Flow
375028040CLIP PANEL SPLASH DEEP
385029846BSHG PADDLE WHEEL AREA
395030983BRKT FLEX MANIFOLD
405031093CAP VLV MNT W/SUPPORT
415031164TUBING SYRUP 29"
425031165TUBING SYRUP 32"
435031166TUBING SYRUP 34"
445031167TUBING SYRUP 36"
455031473MANIFOLD 5 VLV FLEX LFT
465031483TUBING SYRUP 38"
475031484MANIFOLD 5 VLV FLEX RT
485031561ROD SUP MIDDLE
495031562ROD SUP LFT AND RT SIDES
505031573TUBE CARB WATER 1
515031574TUBE CARB WATER 12
525031625LABEL #12 TUBE ID
53020000478 PANEL SPLASH DEEP
54020000479 PANEL SPLASH DEEP EXTENDED
555009080010 O-RING .239 ID X .070W
565007282MEDALLION DURATRAN COCA COLA
575012944SCR #8 X 3/4 PH FLAT HD
585012187MANIFOLD 5 PORT KIT
37
Page 38
Installation and Service Manual
EXPLODED VIEWS, PARTS & DIAGRAMS
MII-302 CARB WATER TUBING
38
Page 39
Installation and Service Manual
EXPLODED VIEWS, PARTS & DIAGRAMS
STRIP LID ASSEMBLY (5030332)
Optional bin adaptor for MII 200/250 for Manitowoc IB Series or Scotsman Eclipse ice makers.
MII-250 115V WIRING DIAGRAM
39
Page 40
Installation and Service Manual
EXPLODED VIEWS, PARTS & DIAGRAMS
MII-302 115V WIRING DIAGRAM
40
Page 41
Installation and Service Manual
TROUBLESHOOTING
PROBLEMPOSSIBLE CAUSECORRECTIVE ACTION
No power.Check electrical connection.
Di s pe nser will n ot
dispense ice (and
NO SOUNDS are
heard wh en
manchin e is
activated).
Di s pe nser will n ot
dispense ice (motor
runs but no ice
movement is heard
in bin ).
Excessive clusterin g
or bridging of ice.
Loose wire in electrical
system.
Dispenser overloaded wi th i ce.
Moto r no t wo r k ing..
No ice in bin.Fill dispenser with i ce.
Door not opening.
Paddle wheel pin slipp ed from
the padd le wheel.
Loaded ice not broken up.
(Warning: Super cooled ice is
not covered by the Servend
warranty.)
Excessive water spilli ng from
the i ce maker.
Thoroug hly check all wi re
connections.
Remove ice from dispenser until
unit will operate.
Check thermally protected motor.
Replace motor or capacitor if
necessary.
Check rocking chute mecha nism or
electric solenoid ope ration.
Replace paddle wheel pin.
Break i ce clusters before manua lly
fi lling the d is penser. (Se e ic e
recommendations)
Adjust ice maker to eli minate water
spillage.
Ice Dispenses
continuously.
Thumping noise or
irre gu la r so und a t a
particular area of th e
dispenser.
Poorly adjusted ice maker.
Extremely low usage of the
dispenser.
Misalig ned mi c r o swit c h.Adjust mi c roswitch.
Agitation timer set incorrectly.Test agitation timer.
Shaved ice clusters in the bin.
Adjust ice maker to eli minate large
waffle shapes.
Lower the ice level in the bin.
Remo ve c luste r s , di scover why ice
is shaving, and then repair.
41
Page 42
Installation and Service Manual
PROBLEMPOSSIBLE C AUSEC ORRECTIVE ACTION
TROUBLESHOOTING
Dispensing crushed
ice or reduced
dispensing speed.
Door will not close.
Mounting brackets
for ro c k ing ch u te
have spread too far
apart.
Water s pi llage fr om i c e
machi ne into di spenser bin.
Agitation timerTest agitation timer.
Bridge of ice sheet i s too
thick.
Paddle wheel area broken or
cracked.
Ice clusters in bin.Break up or remove clusters.
Door not fully open.Adjust door.
Ice jammed in chute.
Door and/or door lock has
come out of place.
Adjust ice maker.
Adjust ice maker.
Replce paddle wheel area.
Adjust bridge in ice maker or, when
manually filling, break up clusters.