Master Bilt DD-26 User manual

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Deluxe Ice Cream Dipping/Display Merchandisers
DD – Standard Model
DD-L – Low Glass Model
DD-CG – Curved Glass Model
Installation & Operations Manual
Master-Bilt Products
908 Highway 15 orth
ew Albany, MS 38652
Phone: [phone]
PN 059-90000
Rev 5-30-06

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TABLE OF CONTENTS
I TRODUCTIO ………………………………….…………………………………………………………………... 4
STORE CO DITIO S…………………………….……………….…..…………………………………………….. 4
WAR I G LABELS A D SAFETY I STRUCTIO S………..…..……………………………………………… 5
PRE-I STALLATIO I STRUCTIO S………………………..…..………………………………….…………… 6
Inspection for Shipping Damage…………………………………………………………… …………… 5
I STALLATIO I STRUCTIO S………………………………………………………………………………….. 6
General Instructions………………………………………………………………………………………… 6
Electrical… ………………………………………………………………………………………………… 6
Mechanical…………………………………………………………………………………………………… 7
Startup……………………………………………………………………………………………………… 7
TEMPERATURE CO TROL…….…………………………………………………………………………………...7
CLEA I G I STRUCTIO S…………………………………………………………………………………………8
Can Holder Cleaning……………………………………………………………………………………… 8
Frost Shield Cleaning……………………………… ……………………………………………………… 8
OPERATIO CO DITIO S A D PRESSURES ……..……………………………………………………….. 9
Trouble Shooting………………………………………………………………………………………….…9
SERVICE I STRUCTIO S………………………………………………………………………………………….. 9
MASTER-BILT PART UMBERS………………………………………………………………………………….. 10
ACCESSORIES………………………………………………………………………………………………………...11
SALE A D DISPOSAL………………………………………………………………………………………………. 11
WIRI G DIAGRAMS…………………….………………………………………………………………………...12-14

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I TRODUCTIO
Thank you for purchasing a Master-Bilt cabinet This manual contains important instructions for installing, using and
servicing a Master-Bilt DD case A parts list is included in with this manual Read all these documents carefully
before installing or servicing your equipment
STORE CO DITIO S
The Master-Bilt DD 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 DD 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
OTICE
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.
DA GER
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.
OTICE
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 Department
Master-Bilt Products
Highway 15 North
New Albany, MS 38652
Phone [phone]
Fax [phone]

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CAUTION!
GROUND REQUIRED
FOR SAFE OPERATION
WAR I G LABELS A D SAFETY I STRUCTIO S
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
OTICE 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:
DA GER: Severe injury or death will occur if you ignore the message
WAR I G: Severe injury or death can occur if you ignore the message
CAUTIO : Minor injury or damage to your cabinet can occur if you ignore the message
OTICE: 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.
his label is located on top of the electrical control
his label is attached to the cabinet power cord
label and on the wiring channel. on models with a power cord.
PRE-I STALLATIO I STRUCTIO S
I SPECTIO FOR SHIPPI G 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

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I STALLATIO I STRUCTIO S
GE ERAL I STRUCTIO S
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 This is especially important for ice
cream A "First-In, First-Out" rotation practice will keep the products in good salable condition
4 Do not place product in the case when it is soft or partially thawed Also, 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
OTICE TO STORE OW ERS / MA AGERS
Moisture or liquid around or under the cabinet is a potential slip/fall hazard for persons walking by or
working in the general area of the cabinet. Any cabinet malfunction or housekeeping problem that creates a
slip/fall hazard around or under the cabinet should be corrected immediately.
If moisture or liquid is observed around or under a Master-Bilt cabinet, an immediate investigation should be made
by qualified personnel to determine the source of the moisture or liquid The investigation should determine if the
cabinet is malfunctioning or if there is a drainpipe leaking
ELECTRICAL
WAR I G
Before servicing electrical components in the case, make sure all power to case is off. Always use a
qualified technician.
OTICE
For models with electronic ballast only:
For replacement ballast, use only ballast that complies with UL Type CC rating if unit is equipped with
electronic ballast.

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MECHA ICAL
Remove grille and check refrigeration lines to see that they are free (not touching each other or
compressor). Spin condenser fan blade to see that it is free.
Check that all service valves are open The picture below is Master-Bilt’s standard DD-Unit The compressor is
hermetic, it is internally spring mounted and ready to run
Hermetic Compressors
Remove cabinet from crate base and slide into location Cabinet must be level from side to side and front to back
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 with an N S F listed silicone sealant
STARTUP
Uncoil the lead cord and pass it through the hole provided in the grill While the cabinet is in operation, check the
voltage draw and the amperage draw versus this rating on the nameplate Voltage should be checked at the
compressor terminals while the compressor is initially starting The unit is designed to operate at +/- 10% of 115
volts, 60 cycle, single phase This means that the voltage should be between 103 and 126 5 volts
After the cabinet has pulled down in temperature to approximately 0°F at load line, check the thermostatic control by
turning it to its warmest position This should shut the compressor off Also check that the double pole single throw
switch turns the compressor off only A separate 20 amp fuse circuit for each cabinet is recommended to avoid the
possibility of other appliances on a circuit from overloading and causing a malfunction Make sure that the electrical
service is grounded upon installation
TEMPERATURE CO TROL
The DD cabinet has a temperature control that is adjustable from #1
(warmest setting) to # 9 (coldest setting) Turn the control knob in line with
the punch mark to the desired setting The temperature control is located
near the condensing unit at the bottom of the cabinet
Punch
Mark

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CLEA I G
WAR I G: DO OT REMOVE FROST WITH A K IFE, PICK, OR SHARP OBJECTS. DO OT USE ABRASIVE
CLEA ERS OR CAUSTIC CLEA ERS OR SCOURI G PADS
Every 30 to 60 days (depending on frost accumulation), the cabinet should be emptied, warmed up, and wiped down
using a solution of 1 teaspoon of baking soda with 1 quart of water This solution will help eliminate odors Do not
use strong soaps or detergents as they leave odors that can contaminate your product The DD line cabinets are
equipped with a floor drain that exits out the lower rear of the cabinet This exit has a convenient garden hose
fitting
If it is not convenient to turn the power off the cabinet, lay a piece of plastic sheeting on the floor of the cabinet and
scrape the frost off walls using a plastic scraper Do not use metal scrapers This will damage the interior paint of
the cabinet
Lid Removal and Cleaning
The lid can be remove by lifting up and out (see picture) The
lid is a high-impact plastic Wash with warm soapy
water or non-abrasive detergent to avoid scratching
Can Holder Assembly Removal and Cleaning (Optional)
Remove plastic can clamp by screwing knob off the threaded
shaft Wash the can holder and can clamp with a non-abrasive
detergent to maintain sanitary gloss Remove the shaft by
loosening the wing nut and unscrewing the shaft from the shelf
Wash the shaft and shelf using a non-metallic brush
Frost-Shield Removal and Cleaning (optional)
When the frost-shields accumulate approximately ½ to 1
inch of frost (about two to three days), remove it by lifting
up to disengage from the keyhole slot Remove the frost
by holding under running water until clean Dry and
replace the frost-shield by engaging screws at the big end
of the keyhole and push down

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OPERATIO CO DITIO S A D PRESSURES
With room ambient temperature of +80
o
F and cold cabinet (unit cycling on control):
DD-66 & DD-88 with R-404a
Suction pressure – 6 to 8 psig
Head pressure – 240 to 260 psig
If room ambient is low, 60
o
F or lower, then the suction pressure could be as low as 4 psig Temporary block the
condenser coil to raise head pressure to 240 psig in order to verify proper charge and a suction pressure of 6psig to
8 psig Remove blockage after pressure check
DD-26 & DD-46 with R-134a
Suctions pressure –5 to –8 inches vacuum
Head pressure 105 to 110 psig
If room abient is below 70
o
F temporarily block the condenser coil to raise the head pressure to 105 psig and
recheck suction pressure Add R-134a if suction pressure is lower than –8 inches of vacuum
SERVICE I STRUCTIO S (Trouble Shooting Guide)
1 High head pressure and high back
pressure:
A Condenser coil clogged or
restricted
B Condenser fan motor defective
C Air in the system
D Refrigeration overcharge
2 Low back pressure and low head pressure:
A Capillary tube restriction
B Refrigerant undercharged
C Leak in system
D Moisture in system
3 Pressures normal – cabinet warm:
A Refrigerant undercharged
B Thermostat set too warm
4 Compressor starts and runs – but cycles
on overload:
A Low voltage
B Overload protector defective
C High head pressure (see#1)
5 Compressor will not start – hums, but
cycles on overload:
A Low voltage
B Relay defective
C Overload defective
D High head pressure (see #1)
6 Cabinet sweating:
A High ambient humidity
7 Special service situations
If moisture or liquid is observed around or under a Master-Bilt cabinet, an immediate investigation should be made
by qualified personnel to determine the source of moisture or liquid The investigation made should determine if
the cabinet is malfunctioning or if there is a simple housekeeping problem
Moisture or liquid around or under a cabinet is a potential slip/fall hazard for persons walking by or working
in the general area of the cabinet
Any cabinet malfunction or housekeeping problem that creates a slip/fall hazard around or under a cabinet
should be corrected immediately

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MASTER-BILT PART UMBERS
The table below gives Master-Bilt part numbers Use this chart when ordering replacement parts for your
DD Standard, Low Glass and Curved Glass Models
Description DD-26(CG)(-L) DD-46(CG)(-L) DD-66(CG)(-L) DD-88(CG)(-L)
Ballast, 18” 23-01709 23-01709 23-01709 23-01709
Ballast, 36” 23-01709 23-01709 23-01709 23-01709
Bulb Shield, 18” 25-01273 25-01273
Bulb Shield, 36” 25-01274 25-01274 25-01274
Capillary Tube 11-01306 11-01306 11-01450 (2 REQ) 11-01450 (2 REQ)
Compressor 03-14761 03-14902 03-14902
Condenser Coil 07-13253 07-13296 07-13296
Condenser Fan Blade 15-13093 15-13093 15-13093
Condenser Fan Motor 13-00311 13-00311 13-00311
Condenser Fan Motor
Bracket 13-00754 13-00754 13-00754
Condensing Unit 01-01494
Drier 09-09308 09-09171 09-09171 09-09171
Fluorescent Lamp, 18” 23-00329 23-00329
Fluorescent Lamp, 36” 23-00325 23-00325 23-00325
Gasket 37-00497 37-00498 37-00499
Glass, Tempered
(Curved Glass)
(Low Glass Model)
31-01543
31-02308
31-02481
31-01199
31-02124
31-02482
31-01193
31-02309
31-02483
31-01192
31-02310
31-02484
Lampholder
w/ Starter Socket
w/o Starter Socket
23-01127
23-01128
23-01127
23-01128
23-01127
23-01128
23-01127
23-01128
LED KIT (if provided) 23-01740 23-01739 23-01738
Lid Assembly 059-145A 062-145A 060-145A 061-145A
Light Switch 23-50793 23-50793 23-50793 23-50793
Power Switch 19-01090 19-01090 19-01090 19-01090
Shelf, Wire 33-01413 33-01413 33-01413 33-01413
Starter, 18” 23-01092 23-01092
Starter, 36” 23-01093 23-01093 23-01093
Temperature Control 19-13607 19-13607 19-13607 19-13607
Wire Harness (126”
Power Cord) 21-00585 21-00585 21-00585 21-00585

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Accessories
Description DD-26(CG)(-L) DD-46(CG)(-L) DD-66(CG)(-L) DD-88(CG)(-L)
Can Holders –Includes
White Can Covers A059-200300 A062-20300 A060-20300 A061-20300
Can Covers
Clear
White
44-00984
44-00973
44-00984
44-00973
44-00984
44-00973
44-00984
44-00973
Casters
Set (4), 3” Dia
Set (6), 3” Dia
A062-11140 A062-11140
A061-11140 A061-11140
Condiment Holders and
Food Pan Display A059-10650 A062-10650 A060-10650 A061-10650
Individual Containers for
Condiment Holders (Clear) 44-01020 44-01020 44-01020 44-01020
Dipper Well
w/Installation Kit A060-20400 A060-20400 A060-20400 A060-20400
Frost Shield (Patented)
Master-Bilt Exclusive A059-11150 A062-11150 A060-11150 A061-11150
Legs
6” leg kit A062-11170 A062-11170 A061-11170 A061-11170
Lid Locking Kits –
Less Locks A059-11129 A059-11129 A060-11129 A060-11129
DDN Flavor Tags A062-20225 A062-20225 A062-20225 A062-20225
SALE A D DISPOSAL
OW ER RESPO SIBILITY
If you sell or give away your Master-Bilt cabinet you must make sure that all safety labels and the Installation -
Service Manual are included with it If you need replacement labels or manuals, Master-Bilt will provide them free
Contact the customer service department at Master-Bilt at [phone]
The customer service department at Master-Bilt should be contacted at the time of sale or disposal of your cabinet
so records may be kept of its new location
If you sell or give away your Master-Bilt cabinet and you evacuate the refrigerant charge before shipment, Master-
Bilt recommends that the refrigerant charge be properly recovered in compliance with section 608 of the Clean Air
Act effective November 1995 and in accordance with all applicable local, regional, or national standards

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