Servend MDH-402 Series Troubleshooting guide

Manitowoc Beverage Equipment

2100 Future Drive  Sellersburg, IN 47172-1868

Tel: 812.246.7000, 800.367.4233  Fax: 812.246.9922

www.manitowocbeverage.com

In accordance with our policy of continuous product development and

improvement, this information is subject to change at any time without notice.

December 03, 2007 REV5

MD/MDH SERIES

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

INSTALLATION & SERVICE GUIDE

Part Number 5010330

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 start-

up 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.

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

TABLE OF CONTENTS

5

Installation and Service Manual

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

TABLE OF CONTENTS

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

QUALIFIED SERVICE PERSONNEL

SHIPPING, STORAGE, AND RELOCATION

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.

DANGER: Carbon Dioxide (CO

2

) displaces oxygen. Exposure to a high concentration of CO

2

gas causes

tremors, which are followed rapidly by loss of consciousness and suffocation. If a CO

2

gas leak is

suspected, particularly in a small area, immediately ventilate the area before repairing the leak. CO

2

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

2

may build up in an area, venting of the B-I-B pumps and / or CO

2

monitors should be utilized.

WARNING: Only trained and certified electrical and plumbing technicians should service this unit. All

wiring and plumbing must conform to national and local codes.

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 environ-

ment causes residual sanitizing solution or water remaining inside the unit to freeze, resulting in

damage to internal components.

7

Installation and Service Manual

GROUNDING IN STRUCTIONS

SAFETY

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 elec-

tric 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 neces-

sary, 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 appli-

ance – 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, includ-

ing 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 adjust-

ment.

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

WARNING

:

Risk of electrical shock. Connect to a properly grounded outlet only.

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:

Pre-mix system:

CO2 regulator set

Product connectors for Figal tank

Gas connectors for Figal tank

Beverage dispenser

Beverage tubing

CO2 tank

Figal beverage tanks

Stepless (Oetiker) clamps

Chain for CO2 tank

Post mix system:

CO2 regulator set

Beverage dispenser

Beverage tubing

CO2 tank

Carbonator

Stepless (Oetiker) clamps

Chain for CO2 tank

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:

Figal system also:

Syrup connectors for Figal tank

Gas connectors for Figal tank

Figal syrup tanks

B-I-B System also:

B-I-B connectors

B-I-B regulator set

B-I-B rack

B-I-B syrup boxes

Do you have enough space to install the dis-

penser or a dispenser and top mounted cu-

ber?

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?

Water line

Drain

Power outlet

Heating and air conditioning ducts

LEGS

Legs are optional equipment with most Servend dispens-

ers. Standard legs are four-inch (10.2 cm) tall painted

steel legs.

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.

CAUTION:

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

penser, legs should NOT be installed.

Installation and Service Manual

9

INSTALLATION

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. Con-

nection “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 pres-

sure should be between 40 and 55 psi. If not in-be-

tween those pressures proper measures must be

taken to regulate them to correct settings.

6. Turn CO2 supply on to the dispenser. Each cold carb

pump deck is furnished with a fixed regulator set at

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.

DRAINAGE OPTIONS

The drains for MD Series connects to the drain pan.

Option One

Drainage through the bottom of the unit:

Option Two

Drainage through the back of the unit:

NOTE: The MDH 302 & 402 will have two drains

90 elbow fitting

Radiator clamp

Flexible tubing

Straight fitting Radiator clamp

Flexible tubing

Holes for

beverage

lines

Holes for

drain pan

drain

10

A

To Drain

A

B

A

C

Drain Pan Pressure Relif Valve

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 re-

move 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 pres-

sure 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 in-

stalled on or out the rear of unit. Then install carbon-

ator tank purge tube to a drain. Follow all local and

national plumbing codes when routing carbonator

tank purge tube to the drain.

Installation and Service Manual

11

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

INSTALLATION

COLD CARB AND AMBIENT SYSTEM PRESSURES

1. Incoming tap water should be at a minimum pres-

sure 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.

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

90-

1800

60

100

CO2

SYRUP

CO2

SYRUP

CARBONATED WATER

NON-CARBONATED WATER

SYRUP

2

CO

Drawing #: 5010102-0

Typical MD Ambient

System Overview

Carbonator

Tank

CO2Cylinder

w/Coldplate

Tap Water

32

4

Tap Water

Bag-In-Box

Syrup

Carton

BIB

Syrup Pump

NOTE:

This is a simplified schematic to

show the basic operation of the

beverage system.

Countertop

Dispenser

1

5

CO2

1800 75

SYRUP

2

CO

SYRUP

60

Dispenser

Tap Water

1

Tap Water

3

Cylinder

2

CO

2

Internal Carbonation

MD Series

Beverage Dispensing System

Bag-In-Box

4

Carton

Syrup

Syrup Pump

BIB

Countertop

show the basic operation of the

This is a simplified schematic to

beverage system.

NOTE:

Dwg#: 5010301-0

Carbonator Tank

Carbonated/Non-carbonated

Beverage Manifold

12

INSTALLATION

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

Installation and Service Manual

13

1Location - Avoid placing the dispenser and/or ice

machine near heat sources such as radiators, ov-

ens, refrigeration equipment and direct sunlight.

2Clearances - Six inch (15.2 cm) clearance on all

sides of the icemaker is needed.

3Front 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-

ing above. Because the icemaker is flush with the

front of the dispenser, some icemakers may over-

hang at the back of the dispenser.

4Drains - A separate drain line is required for the ice

machine, in addition to a drain line for the ice/bev-

erage dispenser.

5MD Series dispensers require an adapter kit to

install a top-mounted icemaker. Contact your lo-

cal Servend distributor for the correct adapter kit.

INSTALLATION

TOP MOUNTED ICEMAKER REQUIREMENTS

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

electrical requirements, see the icemaker installation manual.

ICE FLOW RESTRICTOR

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 block-

ing 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

for more information on how to install

.

6" (15.2 cm)

clearance

for cuber

cuber

3

4

3

2

4

6"

(15.2 cm) 6"

(15.2 cm)

6" (15.2 cm)

1

5

14

Part Number Description

5029518 ........................ Baffle Kit 30”

5029517 ........................ Baffle Kit 22”

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 counter-

sunk 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.

INSTALLATION

BAFFLE FOR MANITOWOC™ CUBERS

BAFFLE FOR "Q" SERIES ICE MACHINES

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 Serv-

end distributor.

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.

Installation and Service Manual

15

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

P

U

S

H

F

O

R

I

C

E

4

Plumbing Diagram

16

INSTALLATION

MD-150 6 VALVE PLUMBING DIAGRAM

MD-150 6 VALVE FLEX MANIFOLD

Installation and Service Manual

17

INSTALLATION

MD-175 8 VALVE PLUMBING DIAGRAM

MD-175 8 VALVE FLEX MANIFOLD

18

INSTALLATION

MD-200/250 8 VALVE PLUMBING DIAGRAM

MD-200/250 8 VALVE FLEX MANIFOLD

Installation and Service Manual

19

INSTALLATION

MD-200/250 10 VALVE PLUMBING DIAGRAM

MD-200/250 10 VALVE FLEX MANIFOLD

20

INSTALLATION

MD-302 12 VALVE PLUMBING DIAGRAM

LEFT RIGHT

MD-302 12 VALVE FLEX MANIFOLD

(1 PER SIDE)

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