Master-Bilt MDT-04 User Manual

Installation & Operations Manual for

MDT SERIES

Open Display Merchandisers

PN 063-90000

Rev 1-28-10LN

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TABLE OF CONTENTS

Page Numbers

INTRODUCTION………………………………….……………………………………………………………………4
WARNING LABELS AND SAFETY INSTRUCTIONS………..…..……………………………………………… 5
PRE-INSTALLATION INSTRUCTIONS………………………..…..………………………………….…………… 6

Spection for ShippingDamage……………………………………………………….………………………… 6

INSTALLATION INSTRUCTIONS………………………………………………………………………………….. 6

Store Conditions………..…………………………….…………………………………….…………………… 6
Location…………………………………………………………………………………….. ………………….…7
Leveling………………………………………………………………………………………………..…………. 7
Joining Sections…………………………………………………………………………………..……………… 8
Installing Joining Trim MD…………………………………………………………………….………………... 9
Installing Joining Trim MDT…….……………………………………………………………….…………….. 10
Installing the Endskirts and Kickplate………………………………………………………………..……….. 11
Removing and Replacing Bumper Trim………………………………………………………………………. 11
Removing and Replacing the Ends……………………………………………………………………….…. 12
Removing and Replacing the Canopy………………….…………………………………………………….. 12
Plumbing…………………………………………………………………………………………………………. 13
Electrical……..…………………………………………………………………………..………………………. 13
Piping…………………………………………………………………………………………………………….. 14
Refrigeration System Evacuating and Charging…………………………………………………………….. 15
EPR Valve/Temperature Control……………………………………………………………………………… 15
Control Settings…………………………………………………………………………………………………. 15

STARTING PROCEDURE…………………………………………………………………………………………... 16
FINAL CHECK LIST………………………………………………………………………………….………………. 16
LOADING……………………………………………………………………………………………………………… 17
CLEANING…………………………………………………………………………………………………………….. 17
NIGHT CURTAINS……………………………………………………………………………………………………. 17
SERVICE INSTRUCTIONS………………………………………………………………………………………….. 18
MASTER-BILT PART NUMBERS………………………………………………………………………………….. 19
SALE AND DISPOSAL………………………………………………………………………………………………. 20
WIRING DIAGRAMS.…………………………………………………………….……………………….……….21-23
MD REFRIGERATION SIZING CHART……………………………………………………………………………. 24

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INTRODUCTION

Thank you for purchasing a Master-Bilt cabinet. This manual contains important instructions for installing, using
and servicing a Master-Bilt MD series endless open air case. Read all these documents carefully before installing
or servicing your equipment. This manual should be left in the care of the store owner or manager.

NOTICE

Read this manual before installing your cabinet. Keep the manual and refer to it before doing any service
on the equipment. Failure to do so could result in personal injury or damage to the cabinet.

DANGER

Improper or faulty hook-up of electrical components of the refrigeration units can result in severe injury or
death.

All electrical wiring hook-ups must be done in accordance with all applicable local, regional or national
standards.

NOTICE

Installation and service of the refrigeration and electrical components of the cabinet must be performed by
a refrigeration mechanic and/or a licensed electrician.

The portions of this manual covering refrigeration and electrical components contain technical instructions intended
only for persons qualified to perform refrigeration and electrical work.
This manual cannot cover every installation, use or service situation. If you need additional information, call or
write us:

Customer Service Department
Master-Bilt Products
Highway 15 North
New Albany, MS 38652
Phone [phone]
Fax [phone]

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WARNING LABELS AND SAFETY INSTRUCTIONS

This symbol is the safety-alert symbol. When you see this symbol on your cabinet or in
this manual, be alert to the potential for personal injury or damage to your equipment.

Be sure you understand all safety messages and always follow recommended precautions

and safe operating practices.

NOTICE TO EMPLOYERS

You must make sure that everyone who installs, uses or services your cabinet is thoroughly familiar with
all safety information and procedures.

Important safety information is presented in this section and throughout this section and throughout the manual.
The following signal words are used in the warnings and safety messages:

DANGER: Severe injury or death will occur if you ignore the message.

WARNING: Severe injury or death can occur if you ignore the message.

CAUTION: Minor injury or damage to your cabinet can occur if you ignore the message.

NOTICE: This is important installation, operation or service information. If you ignore the

message, you may damage your cabinet.

The warning and safety labels shown throughout this manual are placed on your Master-Bilt Products
cabinet at the factory. Follow all warning label instructions. If any warning or safety labels become lost or
damaged, call your customer service department at [phone] for replacements.

CAUTION!

GROUND REQUIRED

FOR SAFE OPERATION

This label is located on top of the electrical control This label is attached to the cabinet power cord
label and on the wiring channel. on models with a power cord.

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PRE-INSTALLATION INSTRUCTIONS

INSPECTION FOR SHIPPING DAMAGE

You are responsible for filing all freight claims with the delivering truck line. Inspect all cartons and crates for
damage as soon as they arrive. If damage is noted to shipping crates or cartons or if a shortage is found, note this
on the bill of lading (all copies) prior to signing.

If damage is discovered when the cabinet is uncrated, immediately call the delivering truck line and follow up the
call with a written report indicating concealed damage to your shipment. Ask for an immediate inspection of your
concealed damage item. Crating material must be retained to show the inspector from the truck line.

INSTALLATION INSTRUCTIONS

GENERAL INSTRUCTIONS

1. Be sure the equipment is properly installed by competent service people.

2. Keep the equipment clean and sanitary so it will meet your local sanitation codes.

3. Rotate your stock so that older stock does not accumulate. A "First-In, First-Out" rotation practice will keep the
products in good salable condition.

4. Product should not be put in the case for at least 6 hours after it is started.

5. Stock cases as quickly as possible, exposing only small quantities to store temperatures for short periods of
time.

6. When replacing burned out fluorescent tubes, be sure that the electrical power to the lighting circuit is turned off.

STORE CONDITIONS

The Master-Bilt MD cases are designed to operate in the controlled environment of an air conditioned store. The
store temperature should be at or below 75°F and a relative humidity of 55% or less. At higher temperature or
humidity conditions, the performance of these cases may be affected and the capacity diminished. It is not
uncommon in a newly constructed store for the temperature and humidity to be above design conditions. These
excessive conditions may produce sweating in the case until the store is operational and the ambient environment
is more desirable.

The Master-Bilt MD-06/08 should not be positioned where it is directly exposed to rays of the sun or near a direct
source of radiant heat or air flow. No HVAC return or supply air ducts may be located near case openings. This will
adversely affect the case air flow and will result in poor performance. Do not open windows or doors that will affect
the case air flow. The maximum air velocity near the case air return is 50 FPM. If this case is to be located against
a wall there should be at least a 6” space between the wall and the back of the case. This space will allow for the
circulation of air behind the case which will prevent condensation on the exterior surfaces.

These cases should always be loaded properly. This unit will operate differently when loaded or unloaded. Consult
the section of this manual that specifies loading procedures.

A P-trap is included with each case. It is important that each case has a P-trap installed. Consult the section of
this manual for installing and piping the drain.

To comply with Sanitation requirements; the cabinet must be mounted on legs (6” high min.) or casters or the base
must be sealed to the floor (MDT) with an N.S.F. listed silicone sealant. Minimum clearance allow at least a 4”
space between the wall and the back of the case. This space will allow for the circulation of air behind the case
which will prevent condensation on the exterior surfaces.

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LOCATION

Make sure that the floor will support this equipment is of adequate strength to
prohibit sagging. After confirming the dimensions of case, measure off and
mark on the floor the exact location of the cases for the entire lineup. Snap
chalk lines where the base skids of the case are to be located as shown in

Figure 1.

Figure 1

LEVELING

It is very important that this equipment be perfectly level. This will allow for proper and complete drainage of the
evaporator coil and for proper case alignment. A perfectly level area is generally not available where the
equipment is to be installed. Mark the location of all case joining points front and back. Use a transit to locate the
highest point on the chalk lines. This point will be a reference point for determining shim-pack heights. Using the
reference point, mark the difference directly on the floor to each joining point front and back. Shim each joining
point to equal the reference point as required. Tape all shims in place. If the installation is an entire lineup install
the case that will be positioned at the highest point first. Check that the equipment in the lineup is level as the
installation proceeds.

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JOINING SECTIONS

Remove the case from its shipping skid. Set the first case into its desired position
with required shims in preparation for joining it with its adjacent case.

The joining gasket for cases in a lineup is factory installed and is shown in black in
Figure 2. This gasket is only required on one end of cases in a lineup as only one
gasket is needed between two cases. Inspect the gasket to insure that it is
properly located and is not damaged. The cases are now ready to be joined
together. Remove the second case from its shipping skid and move it into position
against the end of the first case. Properly level the second case with the
appropriate shims

Figure 2

Bolt the cases together through the seven holes that
are provided in the steel end frame as shown in
Figure 3. Tighten the bolts until all seams are fully
closed. Do not over tighten. Repeat the above
process for all other cases in the lineup.

Figure 3

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