Master Bilt GT-40, GT-30 User Manual

GT-30 & GT-40

Installation & Operations Manual

J-Version

Master-Bilt Products

908 Highway 15 North

New Albany, MS 38652

Phone: [phone]

Rev 03/12/07 LN

PN 029-90000

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TABLE OF CONTENTS

INTRODUCTION..................................................................................................................................................4

STORE CONDITIONS .........................................................................................................................................4

WARNING LABELS AND SAFETY INSTRUCTIONS........................................................................................5

PRE-INSTALLATION INSTRUCT IO NS..............................................................................................................6

Inspection for Shipping Damage.............................................................................................................6

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

General Instructions................................................................................................................................6

Electrical..................................................................................................................................................6

MECHANICAL.....................................................................................................................................................7

Leveling Cabinet .....................................................................................................................................7

Grille Removal and Compressor Check..................................................................................................7

START UP ...........................................................................................................................................................7

Fan Operation and Vibration; Voltage Check .........................................................................................7

Thermostat Check...................................................................................................................................7

Defrost and Temperature Control ...........................................................................................................8

AUTOMATIC EXPANSION VALVE ....................................................................................................................9

REFRIGERATION SYSTEM AND OPERATION ................................................................................................9

CLEANING...........................................................................................................................................................9

EXTERIOR PARTS NOMENCLATURE............................................................................................................10

Glass Lid and Top Deck Removal ........................................................................................................10

Drain Pan and Light Shield Removal....................................................................................................11

SERVICE INSTRUCTIONS ...............................................................................................................................11

Operation Conditions and Pressures....................................................................................................11

Trouble Shooting Guide ........................................................................................................................12

MASTER-BILT PART NUMBERS.....................................................................................................................13

ACCESSORIES.................................................................................................................................................14

SALE AND DISPOSAL .....................................................................................................................................14

WIRING DIAGRAMS GT ............................................................................................................................. 15-16

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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 GT case. A parts list is included in with this manual. Read all these
documents carefully before installing or servicing your equipment.

STORE CONDITIONS
The Master-Bilt GT 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 GT should not be positioned where it is directly exposed to rays of sun or near a direct source
of radiant heat or airflow. This will adversely affect the case and will result in poor performance.

The Master-Bilt GT cabinets may be placed directly against the wall. This is due to the cabinet’s condenser
cooling air entering and discharging through the front grille.

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 have the serial number at hand
and call or write us:

Customer Service Depart ment

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
WARNING: Severe injury or death can
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.

occur if you ignore the message.

occur if you ignore the message.

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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