Master Bilt RCT-36 Installation instructions

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6/16 Rev. A 57-02503
INSTALLATION & OPERATIONS INSTRUCTIONS
RCT-36, RCT-48
RCT-36SS, RCT-48SS
KEEP THIS MANUAL FOR FUTURE REFERENCE
En ineerin and technical data are subject to chan e without notice.
Master-Bilt Products
908 Hi hway 15 North
New Albany, MS 38652
Phone: [phone]

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6/16 Rev. A 57-02503
CONTENTS
INTRODUCTION .................................................................................................................................................................3
WARNING LABELS & SAFETY INSTRUCTIONS ........................................................................................................5
PRE-INSTALLATION PROCEDURES .............................................................................................................................6
Inspection For Shippin Dama e .......................................................................................................................6
GENERAL ELECTRICAL & GROUNDING ...................................................................................................................6
INSTALLATION INSTRUCTIONS ...................................................................................................................................7
Locatin The Display Case .................................................................................................................................7
Removin Case From Shippin Skid & General Installation .............................................................................7
Cleanin ..............................................................................................................................................................7
Refri erated RCT Self Contained Model Installation ..............................................................................................8
Cabinet Preparation ............................................................................................................................................8
Cord Options .................................................................................................................................................. 8-9
Refri eration Installation (Refri erated units)..........................................................................................................9
Self Contained Models .......................................................................................................................................9
SHELVING INSTALLATION & RE OVAL ................................................................................................................ 10
Shelf Brackets & Supports................................................................................................................................ 10
Shelves and shelf li ht quantity ........................................................................................................................ 11
Wire Shelf Installation ...................................................................................................................................... 11
DOOR RE OVAL INSTRUCTION ................................................................................................................................ 12
OPERATING INSTRUCTIONS ....................................................................................................................................... 13
Controls ............................................................................................................................................................ 13
Shelves .............................................................................................................................................................. 13
Placin Product Into Case ................................................................................................................................. 14
AINTENANCE ................................................................................................................................................................ 15
Shelf Li ht Replacement .................................................................................................................................. 15
Top Li ht Replacement .................................................................................................................................... 15
PERIODIC AINTENANCE ........................................................................................................................................... 16
Cleanin Condenser Coil .................................................................................................................................. 16
CLEANING INSTRUCTIONS .......................................................................................................................................... 16
Daily Cleanin .................................................................................................................................................. 16
Weekly Cleanin ........................................................................................................................................ 17-18
SERVICE INFOR ATION .............................................................................................................................................. 19
Pre-Service Checklist ................................................................................................................................. 19-20
Special Service Situations ................................................................................................................................. 20
SALE & DISPOSAL ........................................................................................................................................................... 21
Owner Responsibility ....................................................................................................................................... 21
REFRIGERATION & ELECTRICAL DATA ................................................................................................................. 21
WIRING DIAGRA S ........................................................................................................................................................ 22
PARTS............................................................................................................................................................................ 23-24

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6/16 Rev. A 57-02503
INTRODUCTION
Thank you for purchasin a Master-Bilt RCT display case. This manual contains important instructions for
installin , usin and servicin a Master-Bilt RCT display case. A parts list is included with this manual.
Read all these documents carefully before installin or servicin your equipment.
STORE CONDITIONS
The Master-Bilt RCT cases are desi ned to operate in the controlled environment of an air conditioned
store. The store temperature should be below 75° and a relative humidity of 55% or less. At hi her
temperature or humidity conditions, the performance of these cases may be affected and capacity
diminished. It is not uncommon in a newly constructed store for the temperature and humidity to be above
desi n conditions. These excessive conditions may produce sweatin in the case until the store is
operational and the ambient environment is more desirable.
The Master-Bilt RCT cases should be located where it is not subjected to the direct rays of the sun, heatin
ducts, rills, radiator, or ceilin 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. This will adversely affect
the case and result in poor performance.
DANGER
Improper or faulty hookup of electrical components in the case can result in severe injury or death.
All electrical wiring hookups must e done in accordance with all applica le local, regional, or
national standards.
NOTICE
Installation and service of the electrical components in the case must e performed y a licensed
electrician.
The portions of this manual covering components contain technical instructions intended only for persons
qualified to perform electrical work.
NOTICE
Read this manual efore installing your case. Keep this manual and refer to it efore doing any
service on the equipment. Failure to do so could result in personal injury or damage to the case.

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6/16 Rev. A 57-02503
SERIAL NU BER
Record the model and serial numbers of the case for easy reference. Always refer to both model and serial
numbers in your correspondence re ardin the case.
Case Model Serial Number
Condensin Unit Model_ Serial Number
The portions of this manual coverin refri eration and electrical components contain technical instructions
intended only for persons qualified to perform refri eration and electrical work.
This manual cannot cover every installation, use or service situation. If you need additional information,
call or write us:
Technical Service Department
aster-Bilt Products
Highway 15 North
New Albany, S 38652
Phone: [phone]
Fax: [phone]
Email: [e-mail]

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6/16 Rev. A 57-02503
CAUTION
ISK OF ELECT IC
SHOCK DISCONNECT
POWE BEFO E
SE VICING UNIT.
91
-
12340
WARNING LABELS & SAFETY
INSTRUCTIONS
This symbol 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 dama e to your equipment.
Be sure you understand all safety messa es and always follow recommended precautions and safe
operatin practices.
Important safety information is presented in this section and throu hout the manual. The
Followin si nal words are used in the warnin and safety messa es:
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 warnin and safety labels shown throu hout this manual are placed on your Master-Bilt
products case at the factory. Follow all warnin label instructions. If any warnin or safety labels
become lost or dama ed, call our customer service department at 1(800) 684-8988 for replacements.
This label is located on the back of the display case. This label is located below the display pan.
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.
CAUTION
HAZARDOUS MOVING PARTS
DO NOT OPERATE UNIT WITH
DISPLAY PANS REMOVED.

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6/16 Rev. A 57-02503
PRE-INSTALLATION PROCEDURES
Inspection for Shipping Damage
You are responsible for filin all frei ht claims with the deliverin truck line. Inspect all cartons
and crates for dama e as soon as they arrive. If dama e is noted to shippin crates, cartons, or if a
shorta e is found, note this on the bill of ladin (all copies) prior to si nin .
If dama e is discovered when the case is uncrated, immediately call the deliverin truck line and
follow up the call with a written report indicatin concealed dama e to your shipment. Ask for an
immediate inspection of your concealed dama e item. Cratin material must be retained to show
the inspector from the truck line.
GENERAL ELECTRICAL & GROUNDING
-All models are supplied with a power cord that is properly sized to the ampera e requirements of the case.
See the electrical data plate located on the rear left interior of the case for the proper circuit size for each
case.
- The cord is factory installed protrudin from the bottom rear corner of the case (see the “Cord Options”
section of this manual that pertains to your model case for alternate location.). If factory installed cord must
be relocated for desired application the electrical work must be performed by a licensed electrician.
-A separate circuit for each display case is recommended to prevent other appliances on the same circuit
from overloadin the circuit and causin malfunction.
-All electrical wirin hookups must be done in accordance with all applicable local, re ional, or national
electrical standards
DANGER: Improper or faulty hookup of electrical components in the
display case can result in severe injury or death.

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6/16 Rev. A 57-02503
INSTALLATION INSTRUCTIONS
General Display Case Location
The case should be located where it is not subjected to the direct rays of the sun, heatin ducts, rills,
radiators, or ceilin fans, nor should it be located near open doors or main door entrances.
Removing Case From Shipping Skid and General Installation
1. Remove crate top and sides and note missin or dama ed items as explained in the pre-installation
procedures outlined above.
2. Move the case as near as possible to the final location and before removin it from the shippin skid.
3. Remove the (8) screws that secure the case to the shippin skid.
4. Prepare cabinet accordin to instructions in this section that pertain to your model.
5. Lift the case off of skid and into required position. Only lift the case from the liftin /shippin brackets
located on each end of the case
6. Fasten each case to cabinet with the (2) #12 screws supplied.
7. Rout electrical cord accordin to instructions in this section that pertain to your model.
8. Case must be sealed to the counter usin a NSF listed sealant.
Cleaning
For initial setup, clean the case as outlined in the “Weekly Cleanin ” section of this manual.
CAUTION: Do not push against the top glass, front glass, ends, doors or
door frames when removing the case from the skid or moving the case. Case
damage or glass breakage could result.

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6/16 Rev. A 57-02503
CUTTING BOARD
IMPORTANT:
UNIT MUST BE
FASTENED TO
COUNTER AND
CABINET MUST
BE FASTENED
TO FLOOR
Refrigerated RCT Self Contained odels
Cabinet Preparation
The RCT Self Contained models have a lar e condenser compartment han in from the rear of the unit that
contains the condenser/condensate evaporator unit. This compartment han s off the rear ed e of the
counter. The rear of the counter must be open to allow space for this compartment. The countertop top
should be flush with countertop back and the first top 8” of cabinet back must be flat with no doors.
I PORTANT: The condenser air inlet and dischar e louvers are located in the rear of the case. Do not
block these louvers and do not locate them near a source of heat. Clearance of 8” minimum must be
maintained for condenser air exchan e.
(2) ½”dia. case fastenin holes will need to be drilled throu h the counter top surface to attach case to
counter with ¼” X 2” screws provided. Use the dia ram below for hole placement location.
36 . 0 ( 36 "U N I T )
4 8 . 0 ( 4 8 " U N I T )
3 1 . 0 ( 36 "U N I T )
43 . 0 ( 43 "U N I T )
FRONT
CASE TOP VIEW
9 . 00
1 . 9 3
( ) 1/ " DIA
MTG. HOLES
FRONT
CUSTOMER SIDE
5 . 1 /
6 . 7 1 SS
EDG OF COUNTER TOP
5 . 5 M I N .
1 0 . 0
3/4" END
PANELS
CORD LOCATION
STANDARD OPT.1
COUNTER TOP MUST
BE FLUSH WITH REAR
OF CABINET.
. 7 5
DOORS ON REAR OF
CABINET MUST BE
10.0" FROM COUNTER
TOP SURFACE
TYPICAL CABINET CRB MODELS
BACK
CORD OPTIONS
CORD OPTION 1: The electrical cord is shipped from the factory protrudin from the 2-3/4” hole located
in the bottom rear corner of the condensin compartment and does not require a hole to be drilled into the
cabinet. (You may need to reach up into 2-3/4” hole to retrieve cord.)
CORD OPTION 2: The power cord can also be allowed to drop into counter interior space. This option
does not require any rewirin of the case, but does require a hole to be drilled into the back of cabinet.
1. Before placin the case onto the counter remove the (6) screws holdin the condenser cover and remove
the condenser cover.
DANGER: Case must be fastened to counter and counter must be fastened to floor.
CORD
LOCATION
OPT.
1-1/ " DIA HOLE
1 . 8 7 ( 36 U N I T )
1 8 . 8 7 ( 4 8 U N I T )

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6/16 Rev. A 57-02503
2. There is a 2-3/4” hole in the lower corner of the compartment and a 2-3/4”hole plu in the compartment
back. Remove the 2-3/4” plu from the back hole and place it into the bottom hole.
3. Install and fasten the case onto the counter.
4. Drill a 1-1/2” hole throu h the counter back in the location of the 2-3/4” hole for power cord to be
dropped into cabinet compartment.
5. Reinstall the condenser cover and the (6) screws.
OPTON 3: An electrical cord connection hole is provided in the rear control panel next to the controls. A
1-1/2”dia hole throu h the counter is not required for this option. NOTE: Only a licensed electrician must
perform the electrical work required to move the cord to this optional position.
1. Before or after the case has been installed onto the counter remove the (6) screws holdin the condenser
cover and remove the condenser cover.
2. Remove the (4) screws holdin the rear frame panel located under the door track. Loosen the (4) screws
holdin the cuttin board under each end of the cuttin board. Tilt and lift the rear panel out from behind
the cuttin board.
3. Remove the 7/8” hole plu located next to the controls in the control panel. Disconnect power cord
connections and move cord and cord strain relief from bottom hole in frame channel to the 7/8”hole in
the control panel. Reconnect power cord and plu bottom in frame channel with the 7/8” hole plu
removed from the control panel.
4. Reinstall the condenser cover and the rear frame panel and reti hten the cuttin board mountin screws.
Refrigeration Installation
Self Contained odels
The self-contained models are shipped from the factory with a completely operational 134A refri eration
system and require no modifications or adjustments upon installation.
DANGER: Electric shock hazard. Do not operate unit with panels removed.

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6/16 Rev. A 57-02503
SHELVING INSTALLATION & REMOVAL
Shelf Brackets and Supports
SHELF LIGHT, LOCATE IN SECOND
BRACKET NOTCH FROM FRONT
CLEAR BUMPER, ATTACH TO
FRONT OUTSIDE CORNER
OF ALL BRACKETS
REAR SHELF SUPPORT, SET INTO
REAR NOTCH ON SHELF BRACKET
SHELF LIGHT CORD CLIP & SCREW, INSTALL
SCREW INTO HOLE IN SHELF BRACKET
ON SIDE OF SHELF LIGHT CORD
POSITION SHELF BRACKET,
HOOK INTO SHELF STANDARD
1. Turn the li ht switch to the off position. Remove rear doors as described in the “Rear Door Removal”
section of this manual to allow access to interior of case.
2. For first time installation it may be necessary to attach the clear plastic clips to only the shelf brackets
located on the side of the shelf li ht cord. Use the 6-32 x ¼ flat head screws supplied with unit to
attach clear plastic clips to the 1/8 hole on the inside of the shelf brackets. It may also be necessary to
attach the clear bumper to the outside end towards the side lass of each shelf bracket. The bumper
prevents dama e to the end lass. These steps may have already been performed at the factory for you.
Insert a lon er bottom shelf bracket in the desired shelf standard slot on one side of case (bumper side
towards end lass). Follow the instruction in the illustration below. Place the additional lon er bottom
shelf bracket in the same shelf standard slot on the opposite end of case. Repeat for shorter top shelf
tier.
INSTALLATION
REMOVAL
SHELF STANDARD
TOP HOOK
1
SHELF BRACKET
3
BOTTOM TAB
4
6 v NOTCH
0
v NOTCH
1
3
4
CLEAR BUMPER
TOWARDS END PANEL
1. Place shelf bracket top hook into desired shelf
standard slot.
. Lift shelf bracket top hook to allow shelf bracket
bottom tab to clear shelf standard slot.
3. Swing shelf bracketbottom tab into shelf standard
slot.
4. P l a c e t h e d es ir e d s h e l f br a c ke t n ot c h o f 0 , 6 , or 1
d eg r ees o n to bottom o f s h e l f s t a n da r d s lot .
1.
Lift shelf bracket up to allow shelf bracket notch
to clear the bottom of shelf standard slot.
. Swing shelf bracket bottom tab out of shelf
standard slot.
3. Drop shelf bracket down to allow shelf bracket top
hook to clear top of shelf standard slot.
4. r e mo ve s h e l f br a c ke t to p f rom s h e l f s t a n da r d s lot .

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6/16 Rev. A 57-02503
3. Han one end of shelf li ht housin on the front notch of a shelf bracket and then the other end of shelf
li ht housin on the notch of the shelf bracket on the opposite end. Repeat for each additional shelf
tiers. NOTE: On models without shelf li hts, use a shelf support instead of a shelf li ht housin .
4. Push shelf li ht cords into clear plastic clip located on inside of shelf brackets.
5. Remove the cap from the appropriate female li ht sockets. If socket is not bein used for a shelf li ht,
the cap must be plu ed into socket for entire li ht system to operate. NOTE: Grip each side of cap
firmly and wi le and pull cap strai ht out of socket. Do not roll cap durin removal.
6. Plu in each shelf li ht by ali nin the male pins on the appropriate shelf li ht cord plu s with the
female li ht sockets and push to ether. NOTE: Do not roll plu durin insertion.
7. Han one end of the shelf support on to the rear notch of one shelf bracket and then on the rear notch of
the shelf bracket on the opposite side. Repeat for additional shelf tiers.
8. Place supplied shelvin onto shelf supports as outlined in the appropriate “Shelf Installation” section of
this manual.
9. On units with slidin rear doors, re-install both rear doors by liftin top of door into top track and
swin in bottom of door onto bottom track. Install door labeled “inner door” first on inner track and
door labeled “outer door” second on outer track.
Shelves and shelf light quantity
It is not required that all shelves and shelf li hts supplied with each case are used. The quantity of shelves
and shelf li hts can be tailored to your specific needs. If the supplied quantity of shelves and shelf li hts
are not required, cap unused female socket located in interior of the case mullion with caps supplied.
Failure to do so will prevent entire li htin system from operatin .
Wire Shelves Installation
ENGAGE LARGE FRONT
BOTTOM WIRE OF SHELF INTO
SHELF CLIP
INSTALL SCREWS & SHELF RETAINER
CLIPS USING HOLES IN THE TOP OF
FRONT LIGHT HOUSING
LOCATE LIGHT HOUSING IN SECOND
BRACKET NOTCH FROM FRONT
1. For first time installation, it may be necessary to attach the clear plastic clips to each end of the front
li ht housin . Use the 6-32 x ¼ flat head screws supplied with unit to attach clear plastic clips to the 1/8
hole on each side of front li ht housin . This step may have already been performed at the factory for
you. Repeat for each front li ht housin
2. With rear slidin doors removed, place lar e front bottom wire of wire shelf into shelf clip.
3. Position the rear of shelf onto the rear shelf support.
4. Repeat 2 & 3 for each tier.

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6/16 Rev. A 57-02503
DOOR REMOVAL INSTRUCTIONS
ALL SERVICE CASES & SELF SERVE
UPPER TRACK
LOWER TRACK
1. LIFT UP
. SWING BOTTOM OUT
1. Start with the outer door and lift the door upward until the bottom ed e of door clears the
lower track and then swin the bottom of the door outward and down out of upper track.
2. After the outer door is removed repeat the procedure for the inner door.
3. Reverse this procedure for door reinstallation. The doors are not interchan eable.
SELF SERVE SELF CLOSING FRONT DOOR – REFRIGERATED CASES
1. Start with the outer door and lift the door upward until the bottom ed e of door clears the
lower track and then swin the bottom of the door outward and down out of upper track.
2. Remove the inside door usin the same procedure.
3. Replace the inside door. Be sure the self closin sprin catch is en a ed with door catch
for each door.
4. Replace the outside door. Be sure the self closin sprin catch is en a ed with door
catch for each door.
Note: None of the doors are not interchan eable and they must be replaced in the same
location that they where removed from.

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6/16 Rev. A 57-02503
OPERATING INSTRUCTIONS
Controls
Light Switch
This switch controls the power to the li htin circuit. The switch rocker is red in the “on” position,
black in the “off” position.
Temperature Control
This controls the refri erated side by cyclin the compressor/condensin unit. It has an “off”
position and the coldest settin when the knob is set all the way in the clockwise position. Set this
control at the lowest settin possible, while maintainin desired case temperature.
Shelves
Each display is furnished with shelves that are adjustable up and down and can be tilted in two
an ular positions. See “Shelvin Installation & Removal” section of this manual for proper
installation, adjustment and removal of shelvin .

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6/16 Rev. A 57-02503
Placing Product into Case
- Do not exceed 100 pounds of wei ht per shelf. Heavy product should be distributed evenly across
the entire shelvin area.
- Determine desired shelvin location and an le before placin product in case. Product must be
removed to readjust shelf location and an le.
- Do not overhan the front of wire shelves with product. Product may overhan rear of shelf, but
allow a minimum of 1-1/2” between product and rear door. Improper clearance in front and rear of
shelf will block the refri erated airflow and could cause product loss.
-Do not block the slots alon the front or rear of the case display pan. Coverin these slots will
block the refri erated airflow and could cause product loss.
-The display pan is removable for cleanin and can become dislod ed in shipment. To ensure
proper airflow and performance of the case, make sure that the display pan is pushed completely
down into evaporation tub. Check that the pan is installed properly before placin product the
display pans.
-Allow refri erated models to run for at least two hours before placin pre-chilled product into unit.
Turn temperature control to the lowest possible position that maintains required interior cabinet
temperature.
-CASE SHOULD BE STOCKED WITH PRE-CHILLED PRODUCT
ONLY.
ATTENTION:
Master-Bilt RCT refrigerated display cases are designed to operate in a
maximum environment of 75 DEG. F and 55% relative humidity.
Exceeding these limits could cause poor case performance and
sweating of glass panels.

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6/16 Rev. A 57-02503
MAINTENANCE
Shelf Light Bulb Replacement
1. Remove both rear doors as described in the “Door Removal” section of this manual.
2. Remove shelvin from unit throu h rear door openin as described in the “Shelvin Installation and
Removal” section of this manual.
3. Unplu appropriate li ht housin cord from socket and remove li ht fixture from unit throu h rear door
openin .
4. Remove the plastic lens. Startin at one end of the li ht, push in on the topside of plastic lens until the
plastic lens clears the li ht fixture housin and peel the lens away from the fixture housin ed e.
5. The shelf li ht fixture uses a sprin -loaded socket at one end. To remove the bulb push the bulb
towards the sprin -loaded socket until the opposite ends drops out of the socket.
6. Reinstall new bulb in the same manner as described in the Bulb Removal Procedure. Be sure bulb is
secure in bulb receptacles.
Note: Be sure to use a direct equivalent to the original bulb.
Top Light Bulb Replacement
1. Remove both rear doors as described in the “Door Removal” section of this manual.
2. Remove shelvin from unit throu h rear door openin as described in the “Shelvin Installation and
Removal” section of this manual.
3. Remove the (3) top li ht lens retainin screws alon the top frame.
4. Peel the li ht housin out from top frame across the entire len th of li ht lens.
5. To remove bulb from top li ht housin , rip the bulb receptacle end caps at each end of bulb. Pull
the bulb receptacle end caps strai ht down. Once bulb and bulb receptacle end caps are removed
from top li ht housin remove the bulb receptacle end caps from end of bulb.
6. Reinstall new bulb in the same manner as described in the Bulb Removal Procedure. Be sure bulb is
secure in bulb receptacles. Note: Be sure to use a direct equivalent to the ori inal bulb.
7. Reinstall top li ht lens and lens retainin screws

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6/16 Rev. A 57-02503
PERIODIC MAINTENANCE
Cleaning Condenser Coil
It is very important that the Condenser coil is cleaned on a monthly basis to insure proper
refri eration performance and to prevent compressor failure.
Self Contained Refrigerated Units
1. Disconnect power to the unit.
2. On RCT models remove the condenser cover located on the rear of the condenser compartment by
removin the (6) condensin cover retainin screws.
3. Carefully vacuum the front surface of condenser coil. Take care not to bend coil fins with vacuum
cleaner nozzle.
4. Reinstall condenser covers and condenser cover retainin screws.
CLEANING INSTRUCTIONS
Daily Cleaning
The case should be cleaned thorou hly, as described in the weekly cleanin section, before it is
used for the first time.
Note: For major spills or forei n material buildup perform the weekly cleanin instructions.
1. Clean all forei n materials from the door openin .
2. Wipe complete interior of case usin a damp cloth.
3. Clean both sides of the doors and interior and exterior of the front lass usin any common
window cleaner.
NOTICE:
Remove all product from case before proceeding with cleaning
procedure.
NOTICE:
Shut off lights and power switches and remove all product from
case.
Allow sufficient time for the unit to reach room temperature before
proceeding with cleaning.
NOTICE:
Avoid splashing or soaking any electrical components with water to
prevent electrical damage to the case.

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6/16 Rev. A 57-02503
Weekly Cleaning
This procedure is recommended on a weekly basis. It may need to be performed more often if
necessary to maintain a clean, sanitary case. The case should be cleaned to this procedure before
usin the first time.
SHOWN WITHOUT FRONT GLASS &
END PANELS FOR ILLUSTRATION
ONLY
DISPLAY PAN
EVAPORATOR SHROUD
THUMB SCREWS
AIR DEFLECTOR
(Service Unit Only)
1. Remove both rear doors as described in the “Door Removal” section of this manual.
2. Remove shelvin from unit throu h rear door openin as described in the “Shelvin Installation and
Removal” section of this manual. Remove all interior shelvin as described in the shelvin
installation and removal section of this manual.
3. Remove both shelf standards from interior of case by removin the (2) thumbscrew from top and
bottom.
4. Steps 5 & 6 on refri erated only.
5. On Refri erated models lift the display pan up and out of evaporator tub. Remove display pan
throu h rear openin . Remove the evaporator fan shroud by removin the thumbscrews alon the
backside of evaporator fan shroud and on each end of evaporator coil. Lift the rear of the
evaporator fan shroud and reach in and unplu the evaporator fan motor cord. Remove evaporator
fan shroud throu h rear openin .
6. Clean the entire interior of the case usin warm soapy water. Wipe off all soapy water with a damp
cloth and allow to dry. (DO NOT use solvents such as Acetone, Benzene, Carbon Tetrachloride, and
Lacquer Thinners)
NOTE: Dependin on the amount of usa e and spilla e of forei n material, some fasteners may have
to be removed and parts disassembled to allow proper cleanin of the unit.
NOTICE:
Avoid splashing or soaking any electrical components with water to
prevent electrical damage to the case.
NOTICE:
Shut off lights and power switches and remove all product from
case.
Allow sufficient time for the unit to reach room temperature before
proceeding with cleaning.
NOTICE:
Remove all product from case before proceeding with cleaning
procedure.

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6/16 Rev. A 57-02503
7. Clean all shelves, shelf support bars, shelf li ht housin s, shelf brackets, and display pans usin
warm soapy water and a brush. Rinse thorou hly and allow to dry.
8. Clean all forei n material from inner and outer rear door tracks usin warm soapy water and a
brush. Apply a li ht film of lubricant such as PAM to make the doors operate smoother.
9. Clean both sides of the doors and interior and exterior of the front lass usin any common window
cleaner.
10. Reassemble the case in reverse order.

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6/16 Rev. A 57-02503
SERVICE INFORMATION
Before any service work is performed
on the case, make sure all power is
disconnected to the case.
Service problems or request for repair parts from authorized service a encies, trained service personnel, or
owners should be referred to:
Technical Service Department
aster-Bilt Products
Highway 15 North
New Albany, S 38652
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Pre-Service Checklist
You may avoid the cost and inconvenience of an unnecessary service call by first reviewin this
checklist of frequently encountered situations that can cause unsatisfactory case performance.
Case Does Not Operate
-Check for disconnected power supply.
-Check for tripped breaker or blown fuse.
-Check that the thermostat is not “off”.
Lights Do Not Operate
-Check that li ht switch is on.
-Be sure li ht is properly seated in the sockets.
-Check that li ht cord(s) are ti ht in the sockets.
-Plu unused li ht sockets with socket cap provided with socket.
Case Temperature Too Warm
-Check that the cold air inlet and outlet slots are not blocked.
-Be sure that the rear doors are closed and ti htly sealed.
CAUTION
RISK OF ELECTRIC
SHOCK
DISCONNECT POWER
BEFORE SERVICING UNIT
CAUTION:
Before servicing case turn off power at the main reaker of
fuse
ox.

- 20 -
6/16 Rev. A 57-02503
-Check for a blocked or dirty condenser coil fins.
-Check cold airflow. Lack of adequate cold airflow could be a defective evaporator fan or
blocked evaporator coil. Check that paper or forei n material is not blockin evaporator.
If the evaporator coil is blocked due to excessive frost, turn the thermostat knob to the
“off” position for approximately one hour to defrost. Excessive frost will buildup if the
case is operated with the door open or ajar.
-Check that the display pans are installed properly.
-Is the case installed properly to allow adequate air flow to and from condenser.
Glass Fogging
-Check room ambient – Case is desi ned to operate in an environment not to exceed 75°F
and 55% relative humidity.
-Check case temperature – Case is desi ned to operate between 38°F and 42°F.
-Check that nothin is placed on the top of the case lass.
Special Service Situations
There are rare occasions when the refri erant char e must be evacuated from a case in order to
perform service work. In those situations, Master-Bilt Products recommends that the refri erant
char e be evacuated into a recovery system to prevent the possibility of hydrofluorocarbons
(HFC’s) from bein released into the atmosphere.
If moisture or liquid is observed around or under case, an immediate investi ation should be made
by qualified personnel to determine the source of the moisture or liquid. The investi ation made
should determine if the case is malfunctionin or if there is a simple housekeepin problem.
Moisture or liquid around or under a case is a potential slip/fall hazard for persons walkin by or
workin in the eneral area of the case. Any case malfunction or housekeepin problem that creates
a slip/fall hazard around or under a case should be corrected immediately.