Master-Bilt CGD-77 Service Manual

INSTALLATION & OPERATIONS INSTRUCTIONS

CGB-50, CGB-59, CGB-77

CGD-50, CGD-59, CGD-77

KEEP THIS MANUAL FOR FUTURE REFERENCE

Engineering and technical data are subject to change without notice.

Master-Bilt Products

908 Highway 15 North

New Albany, MS 38652

Phone: [phone]

6/16 Rev. A 57-02502 1

CONTENTS

INTRODUCTION ....................................................................................................................................... 3

WARNING LABELS & SAFETY INSTRUCTIONS ............................................................................. 4

PRE-INSTALLATION PROCEDURES .................................................................................................. 5

Inspection For Shipping Damage ................................................................................................ 5

INSTALLATION INSTRUCTIONS ......................................................................................................... 5

Locating The Display Case ......................................................................................................... 5

Removing Case From Shipping Skid .......................................................................................... 5

Grill Removal .............................................................................................................................. 6

Condensate Evaporator ............................................................................................................... 7

Cleaning ...................................................................................................................................... 7

Refrigeration Installation ................................................................................................................. 7

ELECTRICAL INFORMATION & GROUNDING ............................................................................... 8

OPERATING INSTRUCTIONS ............................................................................................................... 9

Controls ....................................................................................................................................... 9

Shelves ........................................................................................................................................ 9

Rear Package Shelf ..................................................................................................................... 9

Doors ........................................................................................................................................... 9

Placing Product Into Case ......................................................................................................... 10

SHELVING INSTALLATION & REMOVAL ................................................................................. 11-13

Shelves and shelf light quantity ................................................................................................ 13

SHELF INSTALLATION ........................................................................................................................ 13

Wire Shelves ............................................................................................................................. 13

Metal Shelves ............................................................................................................................ 13

MAINTENANCE ...................................................................................................................................... 14

Shelf Light Bulb Replacement .................................................................................................. 14

Top Light Bulb Replacement .................................................................................................... 14

PERIODIC MAINTENANCE ................................................................................................................. 15

Cleaning Condenser Coil .......................................................................................................... 15

CLEANING INSTRUCTIONS ........................................................................................................... 16-18

Daily Cleaning .......................................................................................................................... 16

Weekly Cleaning ....................................................................................................................... 17

Interior Cleaning .................................................................................................................. 17-18

Exterior Cleaning ...................................................................................................................... 18

SERVICE INFORMATION .................................................................................................................... 19

Pre-Service Checklist ................................................................................................................ 20

Special Service Situations ......................................................................................................... 21

SALE & DISPOSAL ................................................................................................................................. 21

Owner Responsibility............................................................................................................ 2129

REFRIGERATION & ELECTRICAL DATA ...................................................................................... 22

MAIN WIRING DIAGRAMS ................................................................................................................. 23

LIGHT WIRING DIAGRAMS .......................................................................................................... 24-26

REPLACEMENT PARTS ....................................................................................................................... 27

6/16 Rev. A 57-02502 2

INTRODUCTION

Thank you for purchasing a Master-Bilt® cabinet. This manual contains important instructions for

installing and servicing the Master-Bilt® Curved Glass Display Cases. A repair parts list and wiring
diagram are also included in the manual. Read all of these documents carefully before installing or
servicing your case.

NOTICE

Read this manual before installing your case. Keep this 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
case.

NOTICE

Installation and service of the electrical components in the case must be performed by a
licensed electrician.

The portions of this manual covering components contain technical instructions intended only for
persons qualified to perform electrical work.

DANGER

Improper or faulty hookup of electrical components in the case can result in severe injury or
death.

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

SERIAL NUMBER

Record the model and serial numbers of the case for easy reference. Always refer to both model and
serial numbers in your correspondence regarding the case.

Case Model Serial Number
Condensing Unit Model Serial Number

This manual cannot cover every installation, use, or service situation. If you need additional
information, call or write us:

Technical Service Department

Master-Bilt Products

Highway 15 North

New Albany, MS 38652

Phone: [phone]

Fax: [phone]

Email: [e-mail]

6/16 Rev. A 57-02502 3

CAUTION

RISK OF ELECTRIC

SHOCK DISCONNECT

WARNING LABELS & SAFETY
INSTRUCTIONS

This is the safety-alert symbol. When you see this symbol on your case or in the
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 procedures.

NOTICE TO EMPLOYERS

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

Important safety information is presented in this section and throughout the manual. The
Following signal words are used in the warning 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 case 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 case.

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

POWER BEFORE
SERVICING UNIT.

91-12340

This label is located on the back of the display case. This label is located below the display pan.

6/16 Rev. A 57-02502 4

Master-Bilt®

CAUTION
HAZARDOUS MOVING PARTS
DO NOT OPERATE UNIT WITH
DISPLAY PANS REMOVED.

PRE-INSTALLATION PROCEDURES

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, 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 case 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

Locating the Display Case

The case should be located where it is not subjected to the direct rays of the sun, heating ducts,
grills, radiator, or ceiling fans, nor should it be located near open doors or main door entrances.
Also, avoid locations where there are excessive air movement or air disturbances.

The condenser air inlet and discharge is located at the rear of the case. Do not block this inlet
and do not locate the air inlet near a source of heat.

Removing Case From Shipping Skid

CAUTION:

door frames when removing the case from the skid or moving the case. Case
damage or glass breakage could result.

1. Remove crate top and sides and note missing or damaged items as explained in the pre-installation
procedures outlined above.

2. Move the case as near as possible to the final location and before removing it from the shipping skid.

3. If your case is supplied with plastic end panels, remove them by lifting them in an upward direction.
Set these end panels aside to be reinstalled after case is placed in proper position.

4. Remove the (4) brackets that secure the case to the shipping skid.

5. Lift case off of skid and into required position.

6/16 Rev. A 57-02502 5

Do not push against the top glass, front glass, end glass, doors or

6. Level and square the case as needed by adjusting the leg leveler in each corner of base. (Use the
wrench provided.) (The case must be level for proper drainage of defrost condensate to the
condensate evaporator and allow for proper alignment of front glass.) The 59”, & 77” cases also
have a set of leg levelers in the center. These must be adjusted so the base is flat.

7. The leveled case must be sealed to the floor using a NSF Listed Sealant.

Grill Removal (Refrigerated Units)

DANGER:

There is a removable slotted panel at the rear of the case. The panel allows access to the
condensing unit, the light ballast, the condensate pan, and the field wiring connection box.
Remove this panel to make field wiring connections. See electrical information and grounding
section of this manual before wiring case.

Note: If electrical connection has been performed, disconnect power to case before removing grill panel.

1. Remove the rear grill panel screws from top of rear grill.

2. Tilt the top of rear grill panel outward as shown in illustration on the right.

3. Pull rear grill panel tabs up and out of slots in base of case.

Electric shock hazard. Do not operate unit with panels removed.

2.

1. REAR GRILL
PANEL SCREWS

3. REAR GRILL
PANEL TABS

6/16 Rev. A 57-02502 6

E1954-7

Condensate Evaporator

This case is furnished with an electrical condensate evaporator. Plumbing connections are not
required.

The condensate evaporator is located toward the front of the machine compartment and is
accessible from the rear of the case. After removal of rear grill panel, make sure that the drain
line has not been dislodged during shipment and that the drain trap is located properly over the
water reservoir of the condensate evaporator pan.

Cleaning

For initial setup, clean the case as outlined in the weekly cleaning section of this manual.

Refrigeration Installation

Self Contained Models

The self-contained models are shipped from the factory with a completely operational 134A
refrigeration system and require no modifications or adjustments upon installation.

6/16 Rev. A 57-02502 7

ELECTRICAL INFORMATION &
GROUNDING

This Case Must Be Grounded

DANGER:

Improper or faulty hookup of electrical components in the

display case can result in severe injury or death.

Only a licensed electrician must perform all case electrical connections.

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

A separate circuit for each display case is recommended to prevent other appliances on the same circuit
from overloading the circuit and causing malfunction.

The electrical service must be grounded upon installation.

This unit is designed for permanent connection to a power source. See the electrical data plate located at
the rear of the case for proper circuit size and wire ampacity.

The electrical connection box is accessible from the rear of the case. Remove rear grill on refrigerated
models. (See “Grill Removal” in the installation section of this manual.) See diagram below for
location of the field wiring connection box.

BACK OF CASE OVERHANGS
BASE 1".

7/8" DIA. ELECTRICAL ENTRANCE

ON REAR OF CASE,
1" FROM SIDE OF BASE
1-3/4" FROM BOTTOM OF BASE

7/8" DIA. ELECTRICAL ENTRANCE
IN BOTTOM OF CASE,
2-3/4" FROM SIDE OF BASE,
2-1/8" FROM REAR OF BASE.

FIELD CONNECTION COVER
FOR REFRIGERATED CASES

E3233-1

6/16 Rev. A 57-02502 8

OPERATING INSTRUCTIONS

LIGHT SWITCH

TEMPERATURE CONTROL

E1954-8

Controls

Light Switch

This switch controls the power to the lighting circuit. The switch rocker is red in the “on”
position, black in the “off” position.

Temperature Control

This controls the refrigerated side by cycling the compressor/condensing unit. It has an “off”
position and the coldest setting when the knob is set all the way in the clockwise position. Set
this control at the lowest setting possible, while maintaining desired case temperature.

Shelves

Each display is furnished with shelves that are adjustable up and down and can be tilted in three
angular positions. See “Shelving Installation & Removal” section of this manual for proper
installation, adjustment and removal of shelving.

Sliding Rear Doors

The doors can be easily removed by lifting doors upward until the bottom edge of door clears the
lower track. Swing the bottom of door outward and down out of top track.

Clean the door track frequently for easy door operation. A Very light film of lubricant, such as
PAM, will help the doors slide easily.

6/16 Rev. A 57-02502 9