Servend MD-150 Service Manual

MD/MDH SERIES

MD 150/175/200/250 & MDH 302/402 Beverage/Ice Dispensers

INSTALLATION & SERVICE GUIDE

Part Number 5010330

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.

December 03, 2007 REV5

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 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.

FOREWORD ........................................................................................................ 2

UNPACKING AND INSPECTION ........................................................................ 2

WARRANTY INFORMATION ............................................................................... 2

SAFETY ............................................................................................................... 6

IMPORTANT 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

LEGS ................................................................................................................................ 8

UNIT INSTALLATION ........................................................................................................ 9

DRAINAGE OPTIONS ....................................................................................................... 9

CARB TANK PURGE TUBE ROUTING .............................................................................10

COLD CARB AND AMBIENT SYSTEM PRESSURES ........................................................ 11

AMBIENT BAG-IN-BOX (B-I-B) SYSTEM .......................................................................... 11

COLD CARB BAG-IN-BOX (B-I-B) SYSTEM ...................................................................... 11

TOP MOUNTED ICEMAKER REQUIREMENTS .................................................................13

ICE FLOW RESTRICTOR ................................................................................................. 13

BAFFLE FOR MANITOWOC™ CUBERS .......................................................................... 14

BAFFLE FOR "Q" SERIES ICE MACHINES ......................................................................14

MANUAL FILL LID FOR DISPENSERS WITH A CUBER .................................................. 14

PLUMBING DIAGRAM LOCATION ................................................................................... 15

MD-150 6 VALVE PLUMBING DIAGRAM ..........................................................................16

MD-150 6 VALVE FLEX MANIFOLD ..................................................................................16

MD-175 8 VALVE PLUMBING DIAGRAM ..........................................................................17

MD-175 8 VALVE FLEX MANIFOLD .................................................................................17

MD-200/250 8 VALVE PLUMBING DIAGRAM ................................................................... 18

MD-200/250 8 VALVE FLEX MANIFOLD ...........................................................................18

MD-200/250 10 VALVE PLUMBING DIAGRAM ................................................................. 19

MD-200/250 10 VALVE FLEX MANIFOLD ......................................................................... 19

MD-302 12 VALVE PLUMBING DIAGRAM ........................................................................ 20

MD-302 12 VALVE FLEX MANIFOLD ............................................................................... 20

MD-402 16 VALVE PLUMBING DIAGRAMS ..................................................................... 21

MD-402 16 VALVE FLEX MANIFOLD ............................................................................... 21

MD-402 20 VALVE PLUMBING DIAGRAMS ..................................................................... 22

MD-402 20 VALVE FLEX MANIFOLD ............................................................................... 22

TABLE OF CONTENTS

OPERATION ...................................................................................................... 23

UNIT INSPECTION ........................................................................................................... 23

ICE STORAGE AND DISPENSING ................................................................................... 23

ROCKING CHUTE ICE DISPENSING ................................................................................ 23

COLD PLATE BEVERAGE COOLING ............................................................................... 23

BEVERAGE VALVES ........................................................................................................ 23

AUTO BAG SELECTORS ................................................................................................. 24

B-I-B .................................................................................................................................24

PUMPS ............................................................................................................................ 24

RACKING ......................................................................................................................... 24

PRE-MIX & POST-MIX BEVERAGE DISPENSERS .......................................................... 24

BACK ROOM PACKAGE ..................................................................................................25

BAG-IN-BOX SYSTEM ..................................................................................................... 25

FIGAL SYSTEM ............................................................................................................... 26

CARBONATION ................................................................................................................ 27

INTERNAL CARBONATION .............................................................................................. 27

MD SERIES COUNTERTOP MEASUREMENTS ................................................................28

MD SERIES SPECIFICATIONS ........................................................................................ 29

MDH SERIES COUNTERTOP MEASUREMENTS .............................................................. 30

MDH SERIES SPECIFICATIONS ...................................................................................... 31

ROCKING CHUTE ICE DELIVERY SWITCH ADJUSTMENT .............................................. 32

SETTING THE AUTOMATIC AGITATION TIMER ...............................................................33

115V/220V NON ADJUSTABLE AGITATION TIMER .......................................................... 33

SEQUENCE OF OPERATION ............................................................................................ 34

USER MAINTENANCE ...................................................................................... 35

PREVENTATIVE MAINTENANCE ...................................................................................... 35

HOW TO DISASSEMBLE FOR CLEANING OR MAINTENANCE .......................................35

DAILY CLEANING ............................................................................................................. 38

MONTHLY CLEANING ...................................................................................................... 39

BEVERAGE SYSTEM CLEANING ..................................................................................... 40

BAG-IN-BOX SYSTEM ..................................................................................................... 40

FIGAL BEVERAGE SYSTEM ............................................................................................ 41

Installation and Service Manual

TABLE OF CONTENTS

EXPLODED VIEWS, PARTS & DIAGRAMS ..................................................... 42

MD 150/175/200/250 EXPLODED VIEW ............................................................................ 42

MD 150 PARTS LIST ....................................................................................................... 43

MD 175 PARTS LIST ....................................................................................................... 43

MD 200/250 PARTS LIST ................................................................................................. 44

MDH 302/402 EXPLODED VIEW .......................................................................................45

MDH 302 PARTS LIST ..................................................................................................... 46

MDH 402 PARTS LIST ..................................................................................................... 46

MD 150 115V PRE-MIX WIRING DIAGRAM ...................................................................... 47

MD 150/175/200 115V WIRING DIAGRAM ........................................................................ 48

MD 150 220V PRE-MIX WIRING DIAGRAM ......................................................................49

MD 150/175/200 220V WIRING DIAGRAM ........................................................................ 50

MD 250 115V WIRING DIAGRAM ..................................................................................... 51

MD 250 220V WIRING DIAGRAM ..................................................................................... 52

MDH 302 115V WIRING DIAGRAM ...................................................................................53

MDH 302 220V WIRING HARNESS .................................................................................. 54

MDH 402 115V WIRING DIAGRAM ...................................................................................55

MDH 402 220V WIRING DIAGRAM ...................................................................................56

TROUBLESHOOTING ....................................................................................... 57

PUMP ............................................................................................................................... 57

DRINKS ............................................................................................................................58

LIQUID LEVEL CONTROL ................................................................................................60

INDEX ................................................................................................................ 63

SAFETY

IMPORTANT SAFETY INSTRUCTIONS

Carefully read all safety messages in this manual. Learn how to operate the MD unit properly. Do not allow anyone to operate the unit without proper training and keep it in proper working condition. Unauthorized modifications to the MD 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. CO2 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 CO 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.

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 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

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:

 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?

Pre-mix system:

 CO

regulator set

 Product connectors for Figal tank  Gas connectors for Figal tank  Beverage dispenser  Beverage tubing  CO

tank

 Figal beverage tanks  Stepless (Oetiker) clamps  Chain for CO

B-I-B System also:

tank

 B-I-B connectors  B-I-B regulator set  B-I-B rack  B-I-B syrup boxes

 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?

Post mix system:

 CO

regulator set

 Beverage dispenser  Beverage tubing  CO

tank

 Carbonator  Stepless (Oetiker) clamps  Chain for CO

Figal system also:

tank

 Syrup connectors for Figal tank  Gas connectors for Figal tank  Figal 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?

Also consider the location of the following items before installation:

 Water line

 Drain

 Is the countertop level?

 Can the countertop support the weight of the

 Power outlet

 Heating and air conditioning ducts

LEGS

CAUTION:

penser, legs should NOT be installed.

Legs are optional equipment with most Servend dispensers. Standard legs are four-inch (10.2 cm) tall painted steel legs.

It is recommended if an icemaker is installed on top of the dis-

When installing legs on a MD Series dispenser, leg braces should be used. These are metal braces fitting side to side under the dispenser that reinforce the leg attachment area.

dispenser, or the dispenser/cuber combination plus the weight of the stored ice?

INSTALLATION

UNIT INSTALLATION

Installation and Service Manual

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. Connection “A” comes from the procon pump and is your carbonated water supply and Connection “B” is your plain water supply. (Refer to plumbing diagrams.)

3. Install drain plumbing and insulate.

(See Drainage Options below)

4. Set flexible manifold for correct drink settings.

5. Turn water supply on to the dispenser. Water pressure should be between 40 and 55 psi. If not in-be-

DRAINAGE OPTIONS

The drains for MD Series connects to the drain pan.

Option One

Drainage through the bottom of the unit:

tween those pressures proper measures must be taken to regulate them to correct settings.

6. Turn CO pump deck is furnished with a fixed regulator set at

supply on to the dispenser. Each cold carb

75 psi. Ambient units need to be set between 90 and 100 psi.

7. Fill bin with ice.

8. Connect power supply.

9. Brix beverage valves.

10. Meet all code requirements.

Option Two

Drainage through the back of the unit:

NOTE: The MDH 302 & 402 will have two drains

Holes for drain pan drain

Radiator clamp

90 elbow fitting

Radiator clamp

Flexible tubing

Holes for beverage lines

Straight fitting

Radiator clamp

Flexible tubing

INSTALLATION

CARB TANK PURGE TUBE ROUTING

1. During installation of unit the carbonator tank purge tube (A) must be properly routed to a drain. Once the splash panel has been removed from unit remove twist tie (B) that holds carbonator tank purge tube.

2. Route carbonator tank purge tube (A) down front of unit and behind drain pan. Be sure not to collapse or kink carbonator tank purge tube during routing from unit to drain. (C) Purge tube is connected to the pressure relief valve on carbonator tank and must be routed to a drain

3. The carbonator tank purge tube (A) can be routed down through the counter top that unit has been installed on or out the rear of unit. Then install carbonator tank purge tube to a drain. Follow all local and national plumbing codes when routing carbonator tank purge tube to the drain.

Drain Pan

To Drain

Pressure Relif Valve

Installation and Service Manual

INSTALLATION

COLD CARB AND AMBIENT SYSTEM PRESSURES

1. Incoming tap water should be at a minimum pressure of 40 psi and a maximum of 55psi.

2. BIB pressure gauge set for 60 psi.

3. Carbonator Pressure gauge:

• Cold Carbonation set for 75 psi.

• Ambient systems should be set at 90 psi to 100 psi.

NOTE: If incoming water pressure is under 40 psi, a water booster is recommended. If incoming water pressure is

over 55 psi, a water regulating valve is required.

AMBIENT BAG-IN-BOX (B-I-B) SYSTEM

NOTE:

This is a simplified schematic to show the basic operation of the beverage system.

Countertop

BIB Syrup Pump

SYRUP

Drawing #: 5010102-0

Bag-In-Box

Syrup

Carton

Typical MD Ambient System Overview

Tap Water

Carbonator

Tank

CARBONATED WATER

NON-CARBONATED WATER

Dispenser

w/Coldplate

SYRUP

90-

1800

100

Cylinder

COLD CARB BAG-IN-BOX (B-I-B) SYSTEM

MD Series

Internal Carbonation

Beverage Dispensing System

Tap Water

NOTE:

This is a simplified schematic to show the basic operation of the beverage system.

Dispenser

Carbonated/Non-carbonated Beverage Manifold

Carbonator Tank

Countertop

SYRUP

Cylinder

1800

BIB Syrup Pump

SYRUP

Bag-In-Box

Syrup

Carton

Dwg#: 5010301-0

INSTALLATION

COLD CARB BAG-IN-BOX (B-I-B) SYSTEM

INSTALLATION

TOP MOUNTED ICEMAKER REQUIREMENTS

Installation and Service Manual

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 draw-

(15.2 cm)

cuber

6" (15.2 cm) clearance for cuber

(15.2 cm)

ing above. Because the icemaker is flush with the 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 MD Series dispensers require an adapter kit to

install a top-mounted icemaker. Contact your lo-

cal Servend distributor for the correct adapter kit.

6" (15.2 cm)

NOTE: For full information about icemaker installation, including plumbing lines connections and

electrical requirements, see the icemaker installation manual.

ICE FLOW RESTRICTOR

For all Servend MD/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

BAFFLE FOR MANITOWOC™ CUBERS

When installing a Manitowoc™ “S” series Ice Machine on a Servend MD-series dispenser, a baffle kit is required for proper installation. 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 from Servend. 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 Number Description

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 MD 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 Servend 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 Servend distributor.

Installation and Service Manual

INSTALLATION

PLUMBING DIAGRAM LOCATION

The plumbing diagram is printed on a white vinyl label, usually located above the inlet tubes for syrup and later. The plumbing diagram label can be accessed by removing the splash panel of the dispenser. The plumbing diagram label explains which inlet coldplate fittings supply which dispenser valves and water manifolds.

On internal carb units the water supply must first be connected to the carbonator pump before plumbing to connection “A” shown on plumbing diagram. The carbonator pump deck must be within six feet of the dispenser for optimum performance. (See BIB installation diagram for system pressure settings). 0

Plumbing Diagram

PLUMBING DIAGRAM

E C I

F H S

INSTALLATION

MD-150 6 VALVE PLUMBING DIAGRAM

MD-150 6 VALVE FLEX MANIFOLD

INSTALLATION

MD-175 8 VALVE PLUMBING DIAGRAM

Installation and Service Manual

MD-175 8 VALVE FLEX MANIFOLD

INSTALLATION

MD-200/250 8 VALVE PLUMBING DIAGRAM

MD-200/250 8 VALVE FLEX MANIFOLD

INSTALLATION

MD-200/250 10 VALVE PLUMBING DIAGRAM

Installation and Service Manual

MD-200/250 10 VALVE FLEX MANIFOLD

INSTALLATION

MD-302 12 VALVE PLUMBING DIAGRAM

LEFT RIGHT

MD-302 12 VALVE FLEX MANIFOLD

(1 PER SIDE)

INSTALLATION

MD-402 16 VALVE PLUMBING DIAGRAMS

Installation and Service Manual

LEFT RIGHT

MD-402 16 VALVE FLEX MANIFOLD

(1 PER SIDE)

INSTALLATION

MD-402 20 VALVE PLUMBING DIAGRAMS

LEFT RIGHT

MD-402 20 VALVE FLEX MANIFOLD

(1 PER SIDE)

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 STORAGE AND DISPENSING

Servend dispensers are designed to dispense hard, cube ice up to one-inch square. The ice shapes and sizes listed below 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 32 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.

Dispensing compressed flake “nugget” ice in Servend dispensers takes special handling. Most dispensers require special bin components plus a universal ice management kit. Contact MBE regarding details for your particular installation.

F. Should it be

ROCKING CHUTE ICE DISPENSING

COLD PLATE BEVERAGE COOLING

A cold plate is a block of aluminum with serpentine stainless steel tubes molded inside the aluminum block. The cold plate is approximately the same length and width as the bottom of the dispenser bin. Ice sits on top of the cold plate and cools the cold plate. The stainless steel tubes inside the cold plate carry carbonated water (soda water), noncarbonated water (plain water) and syrup to the beverage valves. While flowing through the stainless steel tubes in the cold plate, water and syrup are chilled to serving temperature.

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 brackets. 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 paddle wheel carries ice. Periodic agitation is optional on the MD150 and MD-175 and is standard on the MD-200, MD-250, MD-302 and MD-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.

Sequence of Operation)

(See Also

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.

OPERATION

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.

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 or 3 gallon B-I-B units. This plastic bag is then held inside a cardboard or other container.

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.

RACKING

Regardless if you are working on pre-mix or post-mix (B-I-B or Figal) system, a place will be designated for placement of the product. A rack (or shelf) system affords 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.

PRE-MIX & POST-MIX BEVERAGE DISPENSERS

Pre-Mix - Only a small number of systems use Pre-Mix,

usually for temporary or very low volume dispensing where installation of a carbonator is not warranted.

Pre-Mix means that syrup and carbonated water are already mixed at the bottling plant, then chilled at the dispenser location before being served.

A memory peg for the meaning of Pre-Mix is that the syrup and carbonated water are mixed together before leaving the beverage valve.

Post-Mix - Most beverage systems are Post-Mix. Permanent dispensing locations with a mid to high volume dispensing have Post-Mix systems, such as self-service dispensers in Convenience Stores, Restaurants and Cafeterias.

Post-Mix means that syrup and carbonated water (or plain tap water for non-carbonated drinks) are mixed together in the valve nozzle of the dispenser, just before the finished beverage flows into the customer’s cup.

A memory peg for the meaning of Post-Mix is that the syrup and water are mixed after leaving the beverage valve.

The two common Post-Mix systems are:

1. Bag-in-Box (BIB) - Most often, five gallons of syrup is stored in a plastic bag inside a carton.

2. Figal - Most often, five gallons of syrup is stored in a stainless steel canister.

Plumbing Diagram Label

The plumbing diagram label explains which inlet cold plate fittings supply which dispenser valves.

OPERATION

BACK ROOM PACKAGE

Installation and Service Manual

BAG-IN-BOX SYSTEM

Creating Carbonated Water:

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. The incoming water for the carbonator must be first ran through the pump before connecting to the proper cold plate inlet.

4. Internal/External Carbonator tank - Combines CO2 gas and tap water to form carbonated water. The “carbonator” is the carbonator tank, water pump and water pump motor.

On an ambient system, after being carbonated, the carbonated water is fed from the carbonator to the dispenser cold plate for chilling. At the beverage valve, chilled water and chilled syrup are mixed to create the finished beverage. A cold carbonated system pre-chills the water before entering the carbonator tank.

Pumping Syrup to the Dispenser:

5. CO2 cylinder - Holds highly pressurized carbon di-

oxide (CO2). The CO2 cylinder is a steel or aluminum cylinder tank. CO2 gas flows to the primary pressure regulator.

6. Cylinder pressure gauge - Indicates amount of CO2 gas in the cylinder.

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 CO2 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 pump. CO2 pressure, 60 to 75 PSI, 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.

OPERATION

FIGAL SYSTEM

1. CO2 cylinder - Holds highly pressurized carbon

dioxide (CO2 ). The CO2 cylinder is a steel or aluminum cylinder tank. CO2 gas flows to the primary pressure regulator.

2. Primary pressure regulator - Lowers the CO2 gas pressure, usually to 100 psi.

3. Lowered outgoing pressure gauge - Gauge indicates lowered outgoing pressure from the CO2 cylinder after being routed through the primary pressure regulator.

At a T-fitting, this line then forms two branches: One branch feeds CO2 gas to the carbonator tank and the other branch feeds CO2 gas to the Figal tanks.

Pumping Syrup to the Dispenser:

4. Secondary pressure regulator - Lowers the CO

gas pressure, usually at 45-60 psi, before the CO gas flows to the Figal syrup tank. Diet syrup is usually 10-15 psi.

5. Syrup pump - Syrup flows through the syrup lines to the dispenser for chilling, then dispensing.

6. Figal tanks - Steel tank which usually holds five gallons of syrup. Several Figal tanks supply the dispenser.

Installation and Service Manual

OPERATION

CARBONATION

The purpose of the carbonator is to take water and combine it with CO2 to create carbonated water. Tap water at street water pressure (minimum 40 PSI dynamic or flowing pressure in a 1/2" water line) must be forced into a tank that contains CO2 (usually at 100 PSI) by using a pump to raise the water pressure above the CO2 pressure. CO2 is absorbed into the water as the water passes through the gas. Cooling and agitating the water will allow it to absorb more CO2 gas. 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 40 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.

INTERNAL CARBONATION

The carbonator tank has two inlets and one outlet connection, as well as a relief valve and two conductivity probes. The water inlet is a double check valve topped with a 3/8" flared fitting. The carbonator will be pre-plumbed as it leaves the factory. If the carbonator needs to be serviced or if the fittings need to be replaced, make sure a nylon washer is used inside the CO2 inlet fitting to prevent leaks.

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.

level control, which is a circuit board mounted inside the electrical box that activates the pump and motor. Removing the cover of the electrical box will grant access to the circuit board. As the control receives a signal from the conductivity probes, it activates the pump motor, which will pump water into the carbonator until the water reaches the high probe.

The conductivity probes are used to control the level of water inside the carbonator tank. The red probe, or the “high” probe, is the shorter of the two. When the level of the water reaches the bottom of the red probe, the pump shuts off. When the water level inside the tank goes below the bottom tip of the of the black or low probe. Both probes are wired to the electronic liquid

The pump motor and electrical box are mounted together on a single platform. The pump is a standard 125 GPH brass rotary vane pump. The flared fittings accept the same swivel/barb connectors used on the carbonator water connections. Also, water enters the pump from the water source on the side that has the filter.

Notes:

•

Pump Decks for internal carb units must be within 6 feet of unit.

•

Installation of a carbonator any further away than the recommended distance is at installer/ owner's risk. Known issues can include, but is not limited to poor carbonation and/or erratic carbonation.

OPERATION

MD SERIES COUNTERTOP MEASUREMENTS

Letter Description MD-150 MD-175 MD-200/250 MD-250-36

Unit Width 22” 24” 30” 36"

Unit Depth 30 1/2" 30 1/2" 30 1/2" 30 1/2"

Outside Ice Bin Depth 22" 22 1/2" 22 1/2" 22 1/2"

Under Unit Width 18" 20" 26" 32"

Under Unit Depth 20 1/2" 20 1/2" 20 1/2" 20 1/2"

Recommended countertop Cut-out* 3"x13" 3"x14" 3"x18" 3"x18"

Maximum Countertop Cut-out* 18"x20 1/2" 20"x20 1/2" 26"x20 1/2" 32"x20 1/2"

CAUTION:

be braced to support the dispenser countertop weight plus ice storage capacity and weight of icemaker, if applicable.

*Cutting the countertop may decrease its strength. Counter should

Installation and Service Manual

OPERATION

MD SERIES SPECIFICATIONS

MD Series dispensers have a stainless steel cabinet and lighted merchandiser standard. Beverage valves, coldplate connections, drain connections and electrical components are front serviceable. MD Series dispensers drain through a single 3/4" NPT connection to the drain pan. The standard voltage for MD Series dispensers is 120VAC-60Hz. A power cord is provided with 120VAC-60Hz models only.

MD Series dispensers are available in the following optional voltages:

• 100VAC-50/60Hz

• 220VAC-50Hz

• 220VAC-60Hz

MD Series dispensers use a 500F and 950F.

/7 hp gearmotor. Optimum ambient conditions for MD Series dispensers are between

Dimensions WxDxH

Ice Storage

Beverage

Valves

Coldplate

Amperage

Agitation Timer

Shipping Weight

MD-150 MD-175 MD-200 MD-250 MD-250-36

22" x 30 ½" x 33" 24" x 30 ½" x 34" 30" x 30 ½" x 33" 30" x 30 ½" x 39" 36" x 30 ½" x 39"

150 lbs 175 lbs 200 lbs 250 lbs 250 lbs

6 8 8 or 10 8 or 10 10 or 12

8 valve: 12 circuit 9 circuit 3-2-1 manifold

2.5 FLA 2.8 FLA 2.5 FLA 2.5 FLA 2.5 FLA

Optional Optional Standard Standard Standard

240 lbs 259 lbs 318 lbs 338 lbs 338 lbs

12 circuit 3-1-1-3 manifold

3-1-1-3 manifold

10 valve: 15 Circuit 3-1-2-1-3 manifold

8 valve: 12 circuit 3-1-1-3 manifold 10 valve: 15 circuit 3-1-2-1-3 manifold

13 circuit Soft plumbed

water circuits, 8 hard-plumbed syrup circuits

OPERATION

MDH SERIES COUNTERTOP MEASUREMENTS

Letter Description MDH-302 MDH-402

Unit Width 42 ¾" 60"

Unit Depth 30 ½ " 30 ½"

Outside Ice Bin Depth 22 ½" 22 ½"

Under Unit Width 38 ¾" 56 ½"

Under Unit Depth 20 ½" 21 ¼"

Recommended Countertop Cut-out* 3" X 32" 3" X 48"

Maximum Countertop Cut-out* 38 ¾" X 20 ½" 56 ½" X 21 ¼"

CAUTION:

*Cutting the countertop may decrease its strength. Counter should be braced to support the dispenser countertop weight plus ice storage capacity and weight of icemaker, if applicable.

Installation and Service Manual

OPERATION

MDH SERIES SPECIFICATIONS

MDH Series dispensers have a stainless steel cabinet and lighted merchandiser standard. Beverage valves, coldplate connections, drain connections and electrical components are front serviceable. MDH Series dispensers drain through a two 3/4" NPT connection to the drain pan. The standard voltage for MDH Series dispensers is 120VAC60Hz. A power cord is provided with 120VAC-60Hz models only.

MDH Series dispensers are available in the following optional voltages:

• 100VAC-50/60Hz

• 220VAC-50Hz

• 220VAC-60Hz

MDH Series dispensers use two between 500F and 950F.

/7 hp gearmotor. Optimum ambient conditions for MDH Series dispensers are

DimensionsW x D x H

Ice S torage

Beverage

Valves

Coldplate

Amperage

Agitation Timer

Shipping Weight

MDH-302 MDH-302 w/EM MDH-402 MDH-402 w/24" EM MDH-402 w/34" EM

42 ¾"" x 30 1/2" x 33" 42 ¾" x 30 ½" x 44" 60" x 30 ½" x 32" 60" x 30 ½" x 44" 60" x 30 ½" x 54"

300 lbs 300 lbs 400 lbs 400 lbs 400 lbs

10 or 12 10 or 12 16 or 20 16 or 20 16 or 20

16 valve: Two (2) 12 circuit

Two (2) 9 circuit 3-2-1 manifold

3.5 FLA 4.0 FLA 4.5 FLA 4.5 FLA 5.0 FLA

Standard Standard Standard Standard Standard

430 lbs 490 lbs 615 lbs 715 lbs 715 lbs

Two (2) 9 circuit

3-2-1 manifold

3-1-1-3 manifold 20 valve: Two (2) 15 circuit 3-1-2-1-3 manifold

16 valve: Two (2) 12 circuit 3-1-1-3 manifold 20 valve: Two (2) 15 circuit 3-1-2-1-3 manifold

OPERATION

ROCKING CHUTE ICE DELIVERY SWITCH ADJUSTMENT

1 To 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.

Installation and Service Manual

OPERATION

SETTING THE AUTOMATIC AGITATION TIMER

Some MD Series ice / beverage dispensers have an optional timer, which agitates ice stored in the dispenser bin. The timer is preset at the factory for three seconds ice agitation every three and one half hours. Beginning July, 1999 this timer is not adjustable. To reset the older style timer, use the following procedure:

1. Place a small screwdriver in the adjustment pot marked “ON” (See illustration at right).

2. Gently turn the adjustment pot counterclockwise until the adjustment pot will no longer turn. One of the cross hairs on the dial will be approximately in the “7 o’clock” position.

3. Turn the adjustment pot clockwise, approximately to the “10 o’clock” position. This is two notches past the zero setting and sets the timer for approximately three seconds of ice agitation.

4. Place a small screwdriver in the adjustment pot marked “OFF” (See illustration at right).

5. Gently turn the adjustment pot counterclockwise until the adjustment pot will no longer turn. One of the cross hairs on the dial will be approximately in the “7 o’clock” position. This sets the adjustment pot at zero hours of timing between agitation periods.

6. Turn the adjustment pot to the right, approximately to the “2 o’clock” position. This is approximately nine notches past the zero setting and sets the timer for agitation approximately every three and one half hours.

To test the adjustable timer, turn the “ON” time to the correct three second position. Turn the “OFF” time to the zero “7 o’clock” position. Do not disturb the dispenser for 15 minutes. The timer will operate if good.

Dispensers made since July 1999 (99G) have non adjustable timers. To test these timers, unplug the dispenser, wait five seconds, then plug the dispenser in. If the timer is good, it will agitate immediately upon the dispenser being plugged in.

115V/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.

OPERATION

SEQUENCE OF OPERATION

Manufactured beginning early 1994

E C

S U

Customer’s cup presses rocking chute push lever or customer’s hand presses push button. The clear plastic arm at the top and the left rear of the clear plastic chute pushes upward on the door.

The door pivots up from the left and right mounting brackets.

The clear plastic arm at the top and left rear of the ice chute also activates the lever of the micro switch. When activated, the micro switch starts the gear motor. The gear motor turns the paddle wheel and agitator arm.

When the paddle wheel turns, ice is carried from the bottom of the bin to the dispense point. Ice falls forward through the open door, into the ice chute and to the customer’s cup.

The door lock keeps the door shut during periodic agitation. Periodic agitation is optional on the MD-150 and MD-175. Periodic agitation is standard on the MD-200, MD-250, MD 250-36, and MDH-302.

During periodic agitation, the paddle wheel and agitator turn for approximately three seconds every three and one half-hours of non-use. Since ice is brought forward during periodic agitation, ice would fall through the ice dispense door if the door lock was not present.

Manufactured before early 1994

Solenoid/Door Mount

Pulley

Plunger

Solenoid

Cable

Microswitc

Door Bumper

Door

Customer’s cup presses against the push plate. The push plate raises the microswitch actuator arm located on the right side of the ice dispense chute. The microswitch actuator arm activates the microswitch.

The microswitch activates the solenoid, which pulls down the solenoid plunger. The plunger is connected to a cable, which is connected to a pulley, then another cable raises the door of the ice chute.

The microswitch also activates the gear motor. The gear motor turns the agitator and paddle wheel, lifting ice from the bottom of the bin to the ice dispense point. Ice falls forward through the open door, through the bin spout, into the ice chute and to the customer’s cup.

Push Button Ice Dispensing, Solenoid, Cable Style Door

Customer’s finger presses the push button, located in the merchandiser frame. The button is labeled, “PUSH FOR ICE”.

The push button energizes the plunger micro- switch. The microswitch activates the solenoid, which pulls down the solenoid plunger. The plunger is connected to a cable, which is connected to a pulley, then another cable raises the door of the ice chute.

Installation and Service Manual

USER MAINTENANCE

PREVENTATIVE MAINTENANCE

Preventative maintenance is a vital part of keeping your Servend dispenser in top condition. Following the guidelines below will assist you in continued trouble free operation of your unit. Contact MBE at 1-800-367-4233 for more information about our ProActive Maintenance Program.

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

R E G

N A

E C

I R O F

H S U

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.

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

E. Paddle wheel F. Bin liner G. Paddle wheel Area

D. Agitator

Accessing a Dispenser Bin Top 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 MD 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 MD-302 dispenser only, remove the strip lids off the top left and top right of the dispenser bin.

7. For the MD-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.

USER MAINTENANCE

HOW TO DISASSEMBLE FOR CLEANING OR MAINTENANCE

Agitator arm and paddle wheel pin:

8. Rotate the agitator arm so the paddle wheel pin handle is pointing up, toward the ceiling. For the MD-302 dispenser only, reach inside the bin through the area where the strip lid has been removed.

9. Loosen the hand-removable paddle wheel pin from the agitator by twisting counter clockwise until it snaps from the agitator bar...

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.

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.

Paddle wheel, bin liner and paddle wheel 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.

17. Remove the paddle wheel area from the bin.

For the MD-302 dispenser only, remove the paddle wheel area to the back of the bin.

18. Discard the remaining ice in the bin.

R E G

N A

E C I R O

F H

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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.

3. Remove outer bracket.

4. Remove door lock.

5. Remove door.

6. Remove ice chute.

7. Model MD-302 has two rocking chutes. Remove both rocking chutes using the same procedure above.

Disassemble the solenoid style chute:

1. Loosen the knurled fastener on both sides of the outer chute and remove chute from the dispenser.

C I R O

H S U

E C I

R O

F H S

U P

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 solvents or

other cleaning agents

drain pan can eventually crack the drain pan, especially if the drain pan is cold or still contains ice.

. Do not pour hot coffee into the drain pan. Pouring hot coffee down the

Clean the exterior and drain pan:

1. Turn off 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.

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.

USER MAINTENANCE

MONTHLY CLEANING

Clean and sanitize the ice bin and cold plate:

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:

• Cold plate

• Entire bin

• Paddle wheel

• Paddle wheel area

• Agitator

• Paddle wheel pin

• Ice Chute

• Rear bushing

• Motor shaft

• Strip lids (where applicable)

Removable front merchandiser

Beverage valve

Water

Syrup

Cold plate

Gear motor

Drain pan

Installation and Service Manual

Agitator

Rocking chute ice dispense chute

Ice bin

Stainless steel bin liner

Cold plate

Ice

Paddle wheel

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 solution for at least 10 seconds.

8. Allow to air dry. Do not rinse.

Reassembling the dispenser parts:

9. Reassemble 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.

E C I

R O F

H S U

13. Check for proper ice dispensing.

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.

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 11 until all syrup circuits contain sanitizer solution.

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

14. Remove nozzles and diffusers from beverage valves.

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

FIGAL BEVERAGE SYSTEM

1. Prepare the following in three clean Figal tanks:

• Rinse tank - fill with room temperature tap water.

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

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

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

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

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

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

/4 oz. bleach to 1

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

17. Replace nozzles, diffusers and valve parts.

18. Connect Bucket 1 to system.

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

20. Attach syrup connectors to BIB’s.

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

22. Discard first 2 drinks.

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

7. Remove valve nozzle and diffuser as shown in Daily Cleaning instructions on Pages 25 and 26. Using a plastic brush or a soft cloth and warm water, scrub the nozzle, diffuser, bottom of the dispensing valve and cup lever, if applicable.

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

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

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

11. Reconnect syrup and carbonated water lines.

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

EXPLODED VIEWS, PARTS & DIAGRAMS

MD 150/175/200/250 EXPLODED VIEW

Installation and Service Manual

EXPLODED VIEWS, PARTS & DIAGRAMS

MD 150 PARTS LIST

MD 175 PARTS LIST

EXPLODED VIEWS, PARTS & DIAGRAMS

MD 200/250 PARTS LIST

Installation and Service Manual

EXPLODED VIEWS, PARTS & DIAGRAMS

MDH 302/402 EXPLODED VIEW

EXPLODED VIEWS, PARTS & DIAGRAMS

MDH 302 PARTS LIST

MDH 402 PARTS LIST

EXPLODED VIEWS, PARTS & DIAGRAMS

531

MD 150 115V PRE-MIX WIRING DIAGRAM

CAUTION

ELECTRICAL SHOCK HAZARD

DISCONNECT POWER

BEFORE SERVICING

Installation and Service Manual

RED

PURPLE

LIGHT

STARTER

BLACK

AGITATION

YELLOW

OPTIONAL

TIMER

531

WHITE

MERCHANDISING LAMP (250)

OPTIONAL

THERMOSTAT

MERCHANDISING LAMP

PURPLE

WHITE

BALLAST

BLUE

BLACK

BALLAST

BLACK

WHITE

BLUE

MOTOR

LIGHT

STARTER

ICE DISPENSE

BLUE

YELLOW

SWITCH

COMMON

ORANGE

OUT

OPTIONAL

AUDIBLE ALARM

BLUE

GRAY

ORANGE

WHITE

BLACK

BUZZER

TIMER

OPTIONAL

EMPTY LIGHT

POWER CORD

PREMIX 115 VOLT 5029411-0

EXPLODED VIEWS, PARTS & DIAGRAMS

MD 150/175/200 115V WIRING DIAGRAM

CAUTION

ELECTRICAL SHOCK HAZARD

DISCONNECT POWER

BEFORE SERVICING

TO RESET TRANSFORMER:

1. DISCONNECT POWER SUPPLY.

2. PRESS RESET BREAKER SWITCH

ON TRANSFORMER.

3. REPLACE MERCHANDISER

(115 VOLT UNITS ONLY)

(FRONT ENCLOSURE).

4. RECONNECT POWER SUPPLY.

115 VOLT

VALVE

KEYSWITCH

OPTIONAL

RED

PUSH

BLACK

YELLOW

PURPLE

LIGHT

STARTER

POWER CORD

BLACK

WHITE

OPTIONAL

AGITATION

TIMER

531

WHITE

BLACK

BLUE

BLACK

MERCHANDISING LAMP

BLACK

BLUE

BALLAST

BLACK

BLUE

WHITE

BLACK

MOTOR

LINE

LOAD

LINE

TRANSFORMER

BLACK

WHITE

BLUE

YELLOW

PUSH

PURPLE

BLUE

ICE DISPENSE

SWITCH

WHITE

ORANGE

WHITE

COMMON

THERMOSTAT

AUDIBLE ALARM

BLUE

ORANGE

BLACK

OPTIONAL

OUT

OPTIONAL

BUZZER

GRAY

TIMER

OPTIONAL

EMPTY LIGHT

BEVERAGE

VALVE

ALL REMAINING VALVES ARE WIRED IN PARALLEL

BEVERAGE

VALVE

PN#: 5029413

REV#: 0

EXPLODED VIEWS, PARTS & DIAGRAMS

MD 150 220V PRE-MIX WIRING DIAGRAM

CAUTION

ELECTRICAL SHOCK HAZARD

DISCONNECT POWER

BEFORE SERVICING

Installation and Service Manual

BLACK

OPTIONAL

YELLOW

PURPLE

STARTER

AGITATION

TIMER

531

WHITE

BLACK

RED

GREEN

L1N

BLUE

BROWN

LIGHT

MERCHANDISING LAMP (250)

MERCHANDISING LAMP

BALLAST

BLUE

BLACK

BLUE

BLACK

WHITE

BLACK

MOTOR

BALLAST

PURPLE

WHITE

STARTER

LIGHT

ICE DISPENSE

BLUE

YELLOW

SWITCH

ORANGE

COMMON

OPTIONAL

THERMOSTAT

OUT

OPTIONAL

AUDIBLE ALARM

BUZZER

BLUE

GRAY

ORANGE

WHITE

BLACK

TIMER

OPTIONAL

EMPTY LIGHT

220/240 VOLT

5029427-0

EXPLODED VIEWS, PARTS & DIAGRAMS

MD 150/175/200 220V WIRING DIAGRAM

CAUTION

ELECTRICAL SHOCK HAZARD

DISCONNECT POWER

BEFORE SERVICING

GREEN

BROWN

VALVE

KEYSWITCH

OPTIONAL

BLUE

RED

PUSH

L1N

RED

BLACK

YELLOW

PURPLE

BLACK

WHITE

OPTIONAL

AGITATION

TIMER

531

BLUE

MERCHANDISING LAMP

BLACK

BALLAST

YELLOW

BLACK

WHITE

BLUE

220/240 VOLT

BLACK

WHITE

BLACK

WHITE

BLUE

MOTOR

LINE

LOAD

LINE

WHITE

PURPLE

TRANSFORMER

BLUE

YELLOW

ICE DISPENSE

SWITCH

BLACK

WHITE

PUSH

NO NC

BLUE

COMMON

ORANGE

BLUE

ORANGE

BLACK

OPTIONAL

THERMOSTAT

OUT

OPTIONAL

AUDIBLE ALARM

BUZZER

GRAY

TIMER

EMPTY LIGHT

OPTIONAL

BEVERAGE

VALVE

ALL REMAINING VALVES WIRED IN PARALLEL

BEVERAGE

VALVE

PN#: 5029429

REV. 0

EXPLODED VIEWS, PARTS & DIAGRAMS

MD 250 115V WIRING DIAGRAM

CAUTION

ELECTRICAL SHOCK HAZARD

DISCONNECT POWER

BEFORE SERVICING

RED

VALVE

KEYSWITCH

OPTIONAL

PURPLE

LIGHT

BLACK

WHITE

RED

STARTER

POWER CORD

BLACK

RED

LIGHT

STARTER

OPTIONAL

AGITATION

TIMER

531

WHITE

BLACK

WHITE

TO RESET TRANSFORMER:

1. DISCONNECT POWER SUPPLY.

2. PRESS RESET BREAKER SWITCH ON TRANSFORMER.

3. REPLACE MERCHANDISER (FRONT ENCLOSURE).

4. RECONNECT POWER SUPPLY.

(115 VOLT UNITS ONLY)

OPTIONAL MERCHANDISING LAMP

BLUE

WHITE

BLACK

YELLOW

BLUE

BLACK

BALLAST

BLACK

WHITE

BLACK

WHITE

BLUE

BLACK

LINE

LOAD

LINE

BLACK

TRANSFORMER

MOTOR

PURPLE

BLUE

YELLOW

ICE DISPENSE

SWITCH

Installation and Service Manual

115 VOLT

PURPLE

BLUE

WHITE

COMMON

ORANGE

ANGE

WHIT

OPTIONAL

AUDIBLE ALARM

BLUE

GRAY

BLACK

OPTIONAL

THERMOSTAT

OUT

BUZZER

TIMER

OPTIONAL EMPTY LIGHT

PUSH

BEVERAGE

VALVES

BLACK

WHITE

BLACK

WHITE

PUSH

BEVERAGE

VALVES

PN#:5029414

REV. 0

EXPLODED VIEWS, PARTS & DIAGRAMS

MD 250 220V WIRING DIAGRAM

CAUTION

ELECTRICAL SHOCK HAZARD

DISCONNECT POWER

BEFORE SERVICING

GREEN

BLUE

L1N

BROWN

RED

VALVE

KEYSWITCH

OPTIONAL

PURPLE

LIGHT

BLACK

WHITE

RED

STARTER

BLACK

RED

PURPLE

LIGHT

STARTER

OPTIONAL AGITATION

TIMER

531

WHITE

OPTIONAL MERCHANDISING LAMP

BLACK

YELLOW

BLUE

WHITE

BLUE

BALLAST

BLACK

WHITE

BLACK

WHITE

BLUE

220/240 VOLT

BLACK

LINE

LOAD

LINE

BLACK

WHITE

MOTOR

TRANSFORMER

PURPLE

BLUE

YELLOW

ICE DISPENSE

SWITCH

BLUE

PURPLE

BLUE

WHITE

COMMON

ORANGE

WHIT

OPTIONAL

AUDIBLE ALARM

BLUE

GRAY

BLACK

OPTIONAL

THERMOSTAT

OUT

BUZZER

TIMER

OPTIONAL EMPTY LIGHT

PUSH

BEVERAGE

VALVES

BLACK

WHITE

BLACK

ALL REMAINING VALVES WIRED IN PARALLEL

BLACK

WHITE

PUSH

BEVERAGE

VALVES

PN#:5029430

REV. 0

EXPLODED VIEWS, PARTS & DIAGRAMS

CAUTION

ELECTRICAL SHOCK HAZARD

DISCONNECT POWER

BEFORE SERVICING

OPTIONAL MERCHANDISING LAMP OPTIONAL MERCHANDISING LAMP

MDH 302 115V WIRING DIAGRAM

TO RESET TRANSFORMER:

(115 VOLT UNITS ONLY)

1. DISCONNECT POWER SUPPLY.

2. PRESS RESET BREAKER SWITCH

ON TRANSFORMER.

3. REPLACE MERCHANDISER (FRONT ENCLOSURE).

4. RECONNECT POWER SUPPLY.

Installation and Service Manual

PURPLE

WHITE

BLACK

BALLAST

BLUE

YELLOW

BLACK

WHITE

BLACK

LINE

LOAD

LINE

ICE DISPENSE

SWITCH

NO NC

TRANSFORMER

COMMON

WHITE

BLUE

WHITE

BLACK

RIGHT MOTOR

PUSH

BEVERAGE

VALVES

BLACK

NO NC

COMMON

ICE DISPENSE

SWITCH

VALVE

KEYSWITCH

OPTIONAL

ALL REMAINING VALVES ARE WIRED IN PARALLEL ALL REMAINING VALVES ARE WIRED IN PARALLEL

BALLAST

TRANSFORMER

PUSH

BEVERAGE

VALVES

LINE

LOAD

LINE

BLACK

WHITE

BLACK

WHITE

BLUE

WHITE

BLACK

OPTIONAL AGITATION

TIMER

YELLOW

531

LEFT MOTOR

WHITE

PURPLE

RED

LIGHT

STARTER

POWER CORD

BLUE

BLACK

OPTIONAL

THERMOSTAT

BLUE

OUT

BLUE

ORANGE

OPTIONAL

AUDIBLE ALARM

BUZZER

BLUE

GRAY

TIMER

OPTIONAL

EMPTY LIGHT

5029415 REV. 0

EXPLODED VIEWS, PARTS & DIAGRAMS

CAUTION

ELECTRICAL SHOCK HAZARD

DISCONNECT POWER

BEFORE SERVICING

BLUE

RED

BLUE

BALLAST

NO NC

COMMON

ICE DISPENSE

SWITCH

VALVE

KEYSWITCH

OPTIONAL

LINE

LOAD

LINE

TRANSFORMER

BLACK

WHITE

MDH 302 220V WIRING HARNESS

220/240 VOLT

OPTIONAL MERCHANDISING LAMP

BLUE

BLACK

WHITE

BLUE

WHITE

BLACK

OPTIONAL

AGITATION

TIMER

YELLOW

531

WHITE

BLACK

BROWN

WHITE

BLUE

BROWN

NL1

BLUE

BALLAST

BLUE

YELLOW

BLACK

WHITE

RED

ICE DISPENSE

LINE

LOAD

LINE

BLUE

SWITCH

NO NC

TRANSFORMER

BLUE

COMMON

BLACK

BLUE

ORANGE

THERMOSTAT

AUDIBLE ALARM

BLUE

GRAY

OPTIONAL

EMPTY LIGHT

OPTIONAL

OUT

OPTIONAL

BUZZER

TIMER

PUSH

BEVERAGE

ALL REMAINING VALVES ARE WIRED IN PARALLEL ALL REMAINING VALVES ARE WIRED IN PARALLEL

VALVES

LEFT MOTOR

BLUE

WHITE

RIGHT MOTOR

WHITE

BLACK

PUSH

BEVERAGE

VALVES

5029431

REV. 0

Installation and Service Manual

EXPLODED VIEWS, PARTS & DIAGRAMS

MDH 402 115V WIRING DIAGRAM

EXPLODED VIEWS, PARTS & DIAGRAMS

CAUTION

ELECTRICAL SHOCK HAZARD

DISCONNECT POWER

BEFORE SERVICING

MDH 402 220V WIRING DIAGRAM

TO RESET TRANSFORMER:

(115 VOLT UNITS ONLY)

1. DISCONNECT POWER SUPPLY.

2. PRESS RESET BREAKER SWITCH

ON TRANSFORMER.

3. REPLACE MERCHANDISER (FRONT ENCLOSURE).

4. RECONNECT POWER SUPPLY.

MDH-402

220/240 VOLT

DWG#: 5029432 REV. 0

VALVE

KEYSWITCH

OPTIONAL

RED

PUSH

BEVERAGE

VALVE

RED

BLACK

PURPLE

LIGHT

STARTER

BLACK

OPTIONAL AGITATION

TIMER

YELLOW

531

BLUE

WHITE

PURPLE

WHITE

BLACK

LIGHT

STARTER

BLACK

WHITE

ALL ADDITIONAL VALVES ARE WIRED IN PARALLEL

OPTIONAL MERCHANDISING LAMP

BALLAST

BLACK

MERCHANDISING LAMP

BALLAST

BLACK

WHITE

LINE

WHITE

LOAD

BLACK

LOAD

LINE

BLACK

WHITE

BLUE

MOTOR

TRANSFORMER

BLACK

WHITE

RED

STARTER

PUSH

BEVERAGE

VALVE

RED

BLACK

PURPLE

LIGHT

STARTER

RED WHITEWHITERED

BLACK

OPTIONAL

AGITATION

TIMER

YELLOW

531

BLUE

WHITE

PURPLE

BLACK

WHITE

BROWN

BLUE

L1 N

BLACK

ALL ADDITIONAL VALVES ARE WIRED IN PARALLEL

OPTIONAL MERCHANDISING LAMP

BALLAST

BLACK

MERCHANDISING LAMP

BALLAST

BLACK

WHITE

LINE

WHITE

LOAD

BLACK

LOAD

LINE

BLACK

WHITE

BLUE

MOTOR

TRANSFORMER

WHITE

PURPLE

WHITE

BLACK

WHITE

LIGHT

BLUE

COMMON

YELLOW

ICE DISPENSE

SWITCH

PUSH PUSH

BEVERAGE

VALVE

BLACK

VALVE

KEYSWITCH

OPTIONAL

BLACK

BLUE

YELLOW

BEVERAGE

VALVE

WHITE

PURPLE

WHITE

ICE DISPENSE

SWITCH

COMMON

BLACK

Installation and Service Manual

TROUBLESHOOTING

PUMP

PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION

Pump motor does not pump.

Pump will no t run but

tank appears to be

always full.

Pump will no t run but

tank level appears to

be below start level.

Pump motor does not shut off.

Black and/or red probe shorted

Problem with motor or motor wiring

Problem with Liquid Level Control Board.

Water pressure from water source is not high enough.

Common Lead (Green) shorted out to Red wire (High Probe)

Common Lead (Green) shorted out to Black wire (Low Probe)

Problem with Liquid Level Control Board

Probe Harness Connection may be open.

Remove probes and bend straight or replace with new probe(s)

Check line voltage first. Check AC voltage across load terminals on Liquid Level Control. If voltage is 120 plus or minus 10%, replace motor or motor wiring.

Check line voltage first. If AC voltage across load terminals is not 120 plus or minus 10%, replace the Liquid Level Control Board.

Verify water pressure leading into pump inlet is 40 psi minimum with p ump running.

Verify Green and Red wires are not touching.

Verify Green and Black wires are not touching.

Short the "H & L" terminals on the Liquid Level Control Board. If motor does not shut off, replace Liquid Level Control Board.

Verify connections are good or replace the wiring harness.

Pump motor intermittent

Water may not be reaching top probe in carb tank.

High Lead (Red) open or not connected.

Common lead (Green) open or not connected.

Problem with probe or probe harness.

Problem with motor or motor wiring.

Verify tank is not filled with CO valve up and letting air escape until water begins coming out.

Verify Red lead wire is connected from tank to unit.

Verify Green lead wire is connected from tank to unit.

Check motor and motor wires by removing red and black wires from the Liquid Level Control Board. If okay, short "H & L" terminal on Liquid Level Control Board. If motor stays off, verify probes and bend straight or replace. Verify with meter.

Measure AC voltage across load terminals on Liquid Level Control Board. If line voltage is 120 plus or minus 10% replace motor or motor wiring.

or air by pulling relief

TROUBLESHOOTING

PUMP

PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION

Pump motor intermittent Problem with Liquid Level Control

Board.

Pump motor starts and stops, short cycles, as soon as water level drops below Red (High) probe.

Pump motor starts and stops, short cycles, as soon as water level drops below Black (Low) probe.

Pump short cycles from below high probe to just above high probe - Low probe has no effect.

Black (Low) Lead wire is open or disconnected.

Red and Black Leads are switched with each other.

Red and Green Leads are switched with each other.

Black and Green Leads are switched with each other.

Check line voltage first. If AC voltage across load terminals on Liquid Level Control Board is not 120 plus or minus 10%, replace the Liquid Level Contorl board.

Verify connections and continuity of black wire from Liquid Level Control Board to Probes on Carb Tank.

Verify Red Lead is going to Red probe and Black Lead is going to Black probe.

Verify Red Lead is going to Red Probe and Green Lead is going to Ground Screw on tank

Verify Black Lead is going to Black Probe and Green Lead is going to Ground Screw on tank.

DRINKS

CONDITION INVESTIGATION CHECK CORRECTION

Warm drinks Is the compressor

running? No

Note A: It is important to remember that anytime the refrigeration system is opened the refrigerant should be recovered, a new drier installed and the proper charge of refrigerant weighed into the refrigeration system.

No water, syrup or gas dispensing

Is there power to the unit?

Is powe r coming

throught the key

switch?

Is there power to the key switch?

Power switch off or Compressor switch off

Ice bank control Check / replace control box

Compressor overload Check / replace overload

Start relay Check / replace relay

Compressor Check / replace compressor

No power Plug in unit or reset breaker

Power to control box Replace fuse or control box

Key switch "off" Turn switch "on"

Key switch defective Replace key switch

No power through the transformer

Move switch to "on" position

Reset/replace transformer

Installation and Service Manual

TROUBLESHOOTING

DRINKS

CONDITION INVESTIGATION CHECK CORRECTION

Water only dispensing No pressure Regulator(s) out of

adjustment

Out of CO

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

line pinched, k inked or

obstructed

Syrup and CO dispensing

only

Carbonator No power Check power supply. Plug in

Water supply Make sure water is turned "on"

Defective carbonator Check/repair/replace carbonator

Syrup and plain water only dispensing

No pressure Out of CO

HP regulator out of

adjustment

Defective HP regulator Check/repair/replace HP regulator

line pinched, k inked or

obstructed

One valve wi ll not dispense anything

Is there power to the

val ve?

Broken wire or loose connection

Bad microswitch Replace microswitch

Beverage dispensed is too sweet

Is the ratio (brix) of

the drink correct?

Flow control out of adjustment

Insufficient soda flow due to low carbonator pressure

Low CO leaks

pressure due to

Obstruction in the water or soda line

Beverage is not sweet enough

Is the ratio (brix) of

the drink correct?

Flow control out of adjustment

Soda flow too high Reset CO

Obstruction in syrup line Clean out the syrup line

Drinks are foaming Are system

Over carbonation Check CO

pressures correct?

Dirty lines/valves Clean/sanitize entire system

Check/adjust regulator(s)

Install fresh tank

Check/repair/replace CO2 line

carbonator or reset breaker.

Replace water filter

Check/clean/replace pump strainer

Check/clean/repair water check valve

Check for frozen water li ne.

Internal Carbonator unit only.

pump, motor, electrode or liquid level control.

Install fresh tank

Adjust HP regulator to the proper setti ng

Check/repair/replaceCO2 line

Replace/repair wire or connector

Adjust the flow control

Adjust CO tank

pressure or change the

Repair CO2 leaks

Clean out the lines

Adjust the flow control

pressure or replace

regulator if necessary

pressure or replace regulator if

supply. Reset

necessary

Installation and Service Manual

TROUBLESHOOTING

LIQUID LEVEL CONTROL

START

Does

Yes

Is pump

motor

operation

intermittent

Pump

Pump motor

motor

come on?

Re move red

and bl ac k

wires from

LLC.

Black and/or re d pr obe

shorted. Re move

probe s, straig hten or

probe s, straig hten or replace if necessary .

replace if necessary .

Check pump

motor and

wiring.

Yes

Does

pump

pump motor

motor come

come

on?

Measure AC

voltage

across load

ter mi nals o n

LLC.

Is line

voltage

(– 10%)

present

Short H and

C terminals

on LLC.

Does

the

pump

pump motor

motor

shut

off?

Replace

LLC

Yes

Check pr obe

harness, harness

connections an d

water s upply .

END

Installation and Service Manual

INDEX

Back Room Package ............... 25

brixing ....................................... 2

Carbon Dioxide ......................... 6

CAUTION .............. 9, 28, 31, 39

claims ...................................... 23

Cleaning .................................... 2

CO2 ........................................... 7

CO2 monitors ............................ 7

damage .............................. 2, 23

delivery .............................. 2, 23

Diagrams 42,43,44,45,46,47,48,49,50,51,52,53,54,55,56

dispensing valves .................. 38

distributor .................................. 2

Drain.......................................... 8

ducts ......................................... 8

exterior ................................... 38

FOREWORD .............................. 2

health department ................... 38

INSPECTION .............................. 2

INSTALLATION 8,9,10,11,12,13,14,15,16,17,18,19,20,21,22

Installation Date ........................ 2

Instructions ............................. 38

irregularities .............................. 2

location ..................................... 8

MBE ........................................... 2

Model Number ........................... 2

modifications ............................. 6

Monthly Cleaning .................... 39

Operation .................................. 6

Power outlet ............................. 8

Qualified Service Personnel ..... 6

regulations .............................. 38

Relocation ................................. 6

return procedures .................... 2

SAFETY ............................... 6, 7

sanitizing ................................... 7

Serial Number ........................... 2

service assistance ................... 2

Service Personnel .................... 6

Shipping .................................... 6

Shipping, Storage, Relocation .. 6

soapy water ........................... 39

solvents .................................. 39

start-up ..................................... 6

Storage ..................................... 6

TROUBLESHOOTING 57, 58, 59, 60

Unit Inspection ........................ 23

UNPACKING .............................. 2

Warning .................................... 6

WARRANTY INFORMATION ..... 2

Water line .................................. 8

water-to-syrup ratio. brixing Wiring Diagrams 48, 49, 50, 52, 53, 55, 56

See

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.

5009448 December 03, 2007 REV5

Servend MD-150 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

FOREWORD

UNPACKING AND INSPECTION

WARRANTY INFORMATION

TABLE OF CONTENTS

SAFETY

IMPORTANT SAFETY INSTRUCTIONS

CARBON DIOXIDE WARNING

QUALIFIED SERVICE PERSONNEL

SHIPPING, STORAGE, AND RELOCATION

ADDITIONAL WARNINGS

GROUNDING IN STRUCTIONS

INSTALLATION

PRE-INSTALLATION CHECK LIST

 Water line

 Drain

 Power outlet

LEGS

UNIT INSTALLATION

DRAINAGE OPTIONS

CARB TANK PURGE TUBE ROUTING

COLD CARB AND AMBIENT SYSTEM PRESSURES

AMBIENT BAG-IN-BOX (B-I-B) SYSTEM

COLD CARB BAG-IN-BOX (B-I-B) SYSTEM

TOP MOUNTED ICEMAKER REQUIREMENTS

ICE FLOW RESTRICTOR

BAFFLE FOR MANITOWOC™ CUBERS

BAFFLE FOR "Q" SERIES ICE MACHINES

MANUAL FILL LID FOR DISPENSERS WITH A CUBER

PLUMBING DIAGRAM LOCATION

MD-150 6 VALVE PLUMBING DIAGRAM

MD-150 6 VALVE FLEX MANIFOLD

MD-175 8 VALVE PLUMBING DIAGRAM

MD-175 8 VALVE FLEX MANIFOLD

MD-200/250 8 VALVE PLUMBING DIAGRAM

MD-200/250 8 VALVE FLEX MANIFOLD

MD-200/250 10 VALVE PLUMBING DIAGRAM

MD-200/250 10 VALVE FLEX MANIFOLD

MD-302 12 VALVE PLUMBING DIAGRAM

MD-302 12 VALVE FLEX MANIFOLD

MD-402 16 VALVE PLUMBING DIAGRAMS

MD-402 16 VALVE FLEX MANIFOLD

MD-402 20 VALVE PLUMBING DIAGRAMS

MD-402 20 VALVE FLEX MANIFOLD

OPERATION

UNIT INSPECTION

ICE STORAGE AND DISPENSING

ROCKING CHUTE ICE DISPENSING

COLD PLATE BEVERAGE COOLING

BEVERAGE VALVES

AUTO BAG SELECTORS

B-I-B

PUMPS

RACKING

PRE-MIX & POST-MIX BEVERAGE DISPENSERS

BACK ROOM PACKAGE

FIGAL SYSTEM

CARBONATION

INTERNAL CARBONATION

MD SERIES COUNTERTOP MEASUREMENTS

MD SERIES SPECIFICATIONS

MDH SERIES COUNTERTOP MEASUREMENTS

MDH SERIES SPECIFICATIONS

ROCKING CHUTE ICE DELIVERY SWITCH ADJUSTMENT

SETTING THE AUTOMATIC AGITATION TIMER

115V/220V NON ADJUSTABLE AGITATION TIMER

SEQUENCE OF OPERATION

USER MAINTENANCE

PREVENTATIVE MAINTENANCE

DAILY CLEANING

MONTHLY CLEANING

BEVERAGE SYSTEM CLEANING

BAG-IN-BOX SYSTEM

FIGAL BEVERAGE SYSTEM

EXPLODED VIEWS, PARTS & DIAGRAMS

MD 150/175/200/250 EXPLODED VIEW

MD 150 PARTS LIST