TLG-27, 48, 52, 74, 80
2008 M Version
Installation & Operations Manual
BLG-12, 27, 48, 52, 74, 80
Master-Bilt Products
908 Highway 15 North
New Albany, MS 38652
Phone: (800) 684-8988
PN_303-91000
REV_11-14-08
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TABLE OF CONTENTS
INTRODUCTION………………………………….……………………………………………………………………4
STORE CONDITIONS…………………………….……………….…..…………………………………………….. 4
WARNING LABELS AND SAFETY INSTRUCTIONS………..…..……………………………………………… 5
PRE-INSTALLATION INSTRUCTIONS………………………..…..………………………………….…………… 6
Inspection for Shipping Damage…………………………………………………………….……………... 6
INSTALLATION INSTRUCTIONS………………………………………………………………………………….. 6
General Instructions…………………………………………………………………………………………. 6
MECHANICAL…… ..…………………………………………………………………………………………………..6
ELECTRICAL….…………...…………………………………………………………………………………………..7
Leg and Condensate Pan Installation……………………………………………………………………………. 7
DOORS…….. ..…………....………………………………………………………………………………………….. 8
CONTROL LINK REFRIGERATION CONTROL………………….…………………………………………….… 9
Programming……………………………………………………………………………………………..…. 9
List of Parameters………………………………………………………………………………………..….10
SENSOR PROBE ……………………………………………………………………………… .………………..11
CABINET COMPONENT AMP DRAW……………………………………………………………………………..11
FINAL CHECK LIST…………………………………………………………………………………….…………….12
SERVICE INSTRUCTIONS ………………………………………………………………………………………...12
TEMPERATURE SENSOR, DEFROST HEATER AND FAN MOTOR REPLACEMENT…………………… 13
MASTER-BILT PART NUMBERS …………………………………………………………………………..……. 14
ACCESSORIES …………………………………………………………………………………………………….15
SALE AND DISPOSAL ……………………………………………………………………………………………..15
WIRING DIAGRAMS BLG/TLG………………………………………….……………………….………… …...16-23
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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 BLG/TLG case. A parts list is included with this manual. Read all these documents carefully
before installing or servicing your equipment.
STORE CONDITIONS
The Master-Bilt BLG/TLG 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.
The Master-Bilt BLG/TLG 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.
If this case is to be located against a wall, there should be at least 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.
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 on 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 (800) 684-8988
Fax (800) 684-8988
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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 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 (800) 684-8988 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. Clean the cabinet with a mild
detergent and water, then rinse.
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.
NOTICE TO STORE OWNERS / MANAGERS
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.
MECHANICAL
Remove front 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.
Remove cabinet from crate base and slide into location. Cabinet must be level from side to side and front to back for
correct draining of coil pan and for self-closing doors to operate correctly. Allow minimum of 4” between back of
cabinet and wall and between top of cabinet and ceiling for proper condensing unit air circulation.
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 (BLG) with an N.S.F. listed silicone sealant.
ELECTRICAL
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WARNING
Before servicing electrical components in the case or the doors or door frames make sure all power to case
is off. Always use a qualified technician.
Check voltage and amps drawn on (Page 17-20) to determine proper line and fuse or circuit breaker size. Check
power supply for low voltage. If voltage reads “230” with no load, and it drops below “207” when the compressor tries
to start, it is an indication of too small supply wiring or too long to run.
It is recommended that a separate circuit be run for each cabinet to prevent another appliance blowing the fuse or
breaker, causing loss of product.
IMPORTANT
Models (2 and 3 door low temp) are pre-wired internally with a 208-230V NEMA L14-20P plug
and should only be plugged into a NEMA L14-20P recepticle. See wiring diagrams on
page 19-21. The cabinet should be grounded.
LEG AND CONDENSATE PAN INSTALLATION FOR TOP MOUNT CABINETS ONLY
1. Screw legs into existing crate mounting holes.
2. Before moving cabinet into place, remove the
condensate pan from the top unit compartment.
3.
Using the two screws supplied with the pan, attach
the pan to the back of the cabinet at the two holes
near the bottom of the plastic drain line. Be sure
pan is NOT located directly under cabinet. When
the pan is attached, feeds drain line into the open
hole in screen and clamp the heater conduit to the
back of the cabinet. Due to this condensate pan,
this case must be a minimum of 6” from the wall.
4. If cabinet must be located next to wall, the pan can
be located under the cabinet. When this is done,
steam will accumulate on the bottom of the cabinet
if there is not adequate ventilation, and rusting of
the bottom of the cabinet
will occur.
DOORS
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Torque Adjustment
Levelin
g Adjustment
The BLG/TLG cabinets have Anthony glass doors
that are equipped with a patented TorqueMaster
hinge system. The doors are easily adjusted using
a flathead screwdriver (Fig.3).
* The tension needs to be checked and set when
first install.
Figure 3
To remove the door shipping clamps,
remove the 4 shipping screws from the grill and
remove the screws from the clamps (Fig.4), and
replace grill.
Figure 4
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MASTER-BILT ELECTRONIC REFRIGERATION CONTROL
OPERATION
Compressor When power is first turned on to the control, the LED indicator under COMP on the display
starts blinking. After one-minute delay the compressor comes on. The COMP LED indicator stays on
while compressor relay is energized. Display will show actual box temperature. Picture below is the
display layout.
The compressor will be cycled off when the actual box temperature reaches its set point. The COMP
indicator will be off.
Display Lay-out
Fan The fans will run constantly except when a defrost is initiated, or when the evaporator temp is
above the 30oF. When in defrost mode the fan is off until the end of the defrost and the 2 minute drip
time has passed. There is 2 minutes delay after a defrost before the fan comes on. If the Evaporator
temperature is 35 oF or below the controller will override the fan delay. FAN LED indicator is on while FAN
relay is energized.
Defrost The control uses time defrost with 4 defrost per day. A programmed “HOT-KEY” has to be
used to re-set the defrost scheme for special applications. During defrost the display will show dEF and
the LED indicator under DEF in on. The control begins timing the defrost when power is turned on. Four
defrost per day means it will occur every 6 hours. To have defrost occur at 8am, 2pm, 8pm, and 2am
then power up at one of these four times.
MANUAL DEFROST
1. Push this DEFROST key for more than 2 seconds and a manual defrost will start.
2. While in defrost, Push and hold the DEFROST key for more than 5 seconds and the
controller will end the defrost cycle. The controller will then enter drip mode for 2 minutes. The
DEF led is flashing in drip mode.
HOW TO SEE THE SETPOINT (Box temperature cut-out)
1.
Push and immediately release the SET key: the display will show the Set
point value;
2. Push and immediately release the SET key or wait for 5 seconds to display the probe value
(actual box temperature) again.
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HOW TO CHANGE THE SETPOINT
1. Push the SET key for more than 2 seconds to change the Set point value;
2. The value of the set point will be displayed and the LED under COMP starts blinking;
3. To change the Set value push the UP ▲ or DOWN▼ arrows within 10s.
To memorize the new set point value push the SET key again or wait 10s.
HOW TO CHANGE a parameter value
1. Enter the Programming mode by pressing the SET and DOWN
under DEF and COMP start blinking).
2. Select the required parameter by pushing
3. Press the “SET” key to display its value (now only the COMP LED is blinking)
4. Use “UP” or “DOWN” to change its value
the UP ▲ or DOWN▼ arrows
▼
keys for 3 seconds (LEDs
5. To exit: Press SET + UP ▲ or wait 15s without pressing a key.
NOTE 1: The set value is stored even when the procedure is exited by waiting the time-out to expire.
NOTE 2: Master-Bilt’s SETPOINT is set at a recommended –10°F at the factory for low temperature(LT) and
+35oF for medium temperature(MT) application.
NOTE 3: To scroll down the parameters without changing them, press the DOWN button.
LIST OF PARAMETERS
Here is a list of the parameters the value of which can be changed in the programming mode, as well as
their ranges.
Parameter Display
Symbol
Description Range
Master-Bilt’s
Setting
BLG
Temperature Set
Point
Set
When this temperature is
reached the compressor LED
-16 to 5°F
-10°F or -15°F
will be off
Temperature
Differential
Maximum
Temperature
Hy
ALU
Cut-out temperature is Set + Hy
1 to 255°F
230°F
10
16
Alarm
Minimum
Temperature
ALL
-58°F
-25
Alarm
Temperature
Alarm Delay
Room Probe
Ald
dP1
0 to 255 min
30
display
Evaporator
dP2
Probe Display
10
ALARM SIGNALS
Message
“P1”
“P2”
“HA”
“LA”
Room probe failure Compressor output time, 6 min on, 4 min off
Evaporator probe failure Defrost end is timed
Maximum temperature alarm Outputs unchanged.
Minimum temperature alarm Outputs unchanged.
Cause Outputs
NOTE:
Probe alarms “P1” and “P2” start some seconds after the fault in the related probe; they
automatically stop some seconds after the probe restarts normal operation. Check connections
before replacing the probe.
Temperature alarms “HA” and “LA” automatically stop as soon as the thermostat temperature
returns to normal values and when defrost starts.
ELECTRICAL CONNECTIONS
The controller is provided with screw terminal block to connect cables with a cross section up to 2,5 mm2. Before
connecting cables make sure the power supply complies with the control’s requirements. Separate the probe cables
from the power supply cables, from the outputs and the power connections. Do not exceed the maximum current
allowed on each relay, in case of heavier loads use a suitable external relay.
PROBE CONNECTIONS
The probes shall be mounted with the bulb upwards to prevent damages due to casual liquid infiltration. It is
recommended to place the thermostat probe away from air streams to correctly measure the average room
temperature. Place the defrost termination probe among the evaporator fins in the coldest place, where most ice is
formed, far from heaters or from the warmest place during defrost, to prevent premature defrost termination.
BLG/TLG CABINET COMPONENT AMP DRAW
VOLTAGE AMPS AT AMPS AT
ITEM
Coil Defrost Heater 17-09408 230 V BLG/TLG-48, 52 3.9 4.3 Check Red or Black Leg
Coil Defrost Heater 17-01311 230 V BLG/TLG-74, 80 6.3 7 Check Red or Black Leg
Condensate Heater
Condensate Heater 201I130 230 V TLG-48, 52, 74, 80 1.2 1.3 Check Red or Black Leg
Door Frame Heater 17-09419 115 V BLG/TLG-48, 52, 74, 80 .33 ea .37 ea Check Black Leg
Door 31-02602 120V BLG/TLG-48, 74 .55 ea .60 ea Check Black Leg
Door 31-02603 120V BLG/TLG-48 .55 ea .60 ea Check Black Leg
Door 31-02604 120V BLG/TLG-52, 80 .76 ea .84 ea Check Black Leg
Door 31-02605 120V BLG/TLG-52 .76 ea .84 ea Check Black Leg
Drain Heater 17-00404 115 V BLG/TLG-48, 52, 74, 80 0.05 0.06 Check Black Leg
ITEM
Coil Defrost Heater 17-09407 120 V BLG/TLG-27 4.3 4.8 Check Black Leg
Condensate Heater A321-130 115 V BLG-27 2.3 2.6 Check Black Leg
Condensate Heater 323I130 115 V TLG-27 2.3 2.6 Check Black Leg
Door Frame Heater 17-09419 115 V BLG/TLG-27 0.33 0.37 Check Black Leg
Door 31-02600 120V BLG/TLG-27 .81 ea .90 ea Check Black Leg
Drain Heater 17-00404 115 V BLG/TLG-27 0.05 0.06 Check Black Leg
PART
NO.
PART
NO.
RATING CABINET 208 VOLTS 230 VOLTS
230 V BLG-48, 52, 74, 80 1.2 1.3 Check Red or Black Leg
VOLTAGE
RATING CABINET 104 VOLTS 115 VOLTS
AMPS AT AMPS AT
NOTES
NOTES
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FINAL CHECK LIST
A. Check operating pressures.
B. Check electrical requirements of unit to
supply voltage.
C. Set temperature control for desired
temperature range.
D. Check sight glass for proper refrigerant
charge, if provided.
E. Check system for proper defrost settings and
operation.
SERVICE INSTRUCTION
1. High head pressure and high back pressure:
A. Condenser coil clogged or restricted
B. Condenser fan motor defective.
C. Air discharge in rear of cabinet restricted.
2. Low back pressure and low head pressure:
A. Restriction in system.
B. Refrigerant undercharged.
C. Leak in system
3. Pressure normal – cabinet warm:
A. Coil blocked with frost (see #4).
B. Refrigerant undercharged.
C. Control set too warm.
4. Cabinet not cycling – coil blocked with frost:
A. Defective temperature controller.
B. Refrigerant overcharged.
C. Location too hot.
D. Condenser clogged.
E. Condenser fan motor defective.
F. Defrost heater not operating.
5. Copressor starts and runs – but cycles on overload:
A. Low voltage
B. Relay defective.
C. Overload defective.
D. High head pressure (see #1).
F. Check condensing unit for vibrating or
rubbing tubing. Dampen and clamp as
required.
G. All valves should be completely opened
counter-clockwise.
H. Check packing nuts on all service valves.
I. Replace all service valve caps and latch unit
covers.
J. Check and set the door tension at the Torque
Adjustment.
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Temperature sensor, defrost heater and fan motor replacement
Before making any change, technician should:
1. Disconnect power to the cabinet
2. Remove screws from venturi and pull down
To change a temperature sensor (cabinet zone sensor or defrost termination sensor), simply disconnect the sensor
wires from the controller and replace the new sensor in the original position. Use plastic tie to tighten the zone
sensor. Insert the sensor for defrost termination firmly into the evaporator coil, in between the fins. Make sure the
sensor wires do not touch or are not close to any heater rods.
To change defrost heater – remove screws from drain pan and pull down – remove screws from coil mounting
straps – spring straps open – remove heater shield – pull heater out of slots in coil fins.
To change fan motor – disconnect fan motor leads – remove screws from fan guards and motor mounts.
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MASTER-BILT PART LIST
The table below gives Master-Bilt part numbers. Use this chart when ordering replacement parts for your
BLG/TLG cabinets. Always Advise Cabinet Serial Number When Ordering Parts
Description
Ballast
Bulb
Bulb Holder Bottom
Bulb Holder Top
Bulb Shield Inner
Bulb Shield Outer
Coil Defrost Heater
Compressor
Compressor Contactor
Compressor Relay
Compressor Run Capacitor
Compressor Start Capacitor
Compressor Switch
Condensate Heater “TLG”
Condensate Heater
Electric, TLG
Condensate Heater, BLG
Electric (Optional)
Condenser Coil
Condenser Fan Blade
Condenser Fan Motor
Door Frame Heater
Door-L.H. (Black)
Door-R.H.
Drain Heater
Drier
Control Link Controller with
Sensor
Evaporator Coil
Evaporator Fan Blade
Evaporator Fan Guard
Evaporator Fan Motor
Expansion Valve
Female Door Plug
Female Plug
Front Control
Heater Safety Control
Leg (TLG only)
Leg Leveler
Light Switch
Sight Glass
Temperature Sensor (2)
Terminal Block
BLG/TLG
12HD
23-01717 23-01717 23-01717 23-01717 23-01717 23-01717
23-01716 23-01716 23-01716 23-01716 23-01716
23-01698 23-01698 23-01698 23-01698 23-01698 23-01698
23-01699 23-01699 23-01699 23-01699 23-01699 23-01699
23-01464 23-01464 23-01464 23-01464 23-01464 23-01464
25-01311 25-01311 25-01311 25-01311 25-01311 25-01311
17-09407 17-09407 17-09408 17-09408 17-01311 17-01311
03-14799 03-14799 03-14968 03-14968 03-14973 03-14973
19-13936 19-13936 19-13934 19-13934 19-13934 19-13934
03-14980 03-14979 03-14977 03-14977
03-14978 03-14978 03-14975 03-14975
03-14979 03-14979 03-14976 03-14976
19-13118 19-13118 19-13118 19-13118 19-13118 19-13118
17-00399 17-00399 17-09412 17-09412 17-09412 17-09412
323I130 323I130 323I130 323I130 323I130 323I130
A321-130 A321-130 17-00421 17-00421 17-00421 17-00421
07-13391 07-13391 07-13090 07-13090 07-13090 07-13090
15-13093 15-13093 15-13093 15-13093 15-13093 15-13093
13-00311 13-00311 13-01283 13-01283 13-01283 13-01283
17-09419 17-09419 17-09419 17-09419 17-09419 17-09419
31-02600 31-02600 31-02602 31-02604 31-02602 31-02604
31-02603 31-02605
17-00404 17-00404 17-00404 17-00404 17-00404 17-00404
09-09171 09-09171 09-09711 09-09711 09-09711 09-09711
19-14166 19-14166 19-14166 19-14166 19-14166 19-14166
07-13288 07-13288 07-13289 07-13289 07-13290 07-13290
15-13106 15-13106 15-13106 15-13106 15-13106 15-13106
25-01324 25-01324 25-01324 25-01324 25-01324 25-01324
13-13181 13-13181 13-13182 13-13182 13-13182 13-13182
09-09825 09-09825 09-09758 09-09758 09-09759 09-09759
21-00568 21-00568 21-00568 21-00568 21-00568 21-00568
21-00577 21-00577 21-00577 21-00577 21-00577 21-00577
19-13897 19-13897 19-13897 19-13897 19-13897 19-13897
19-01164 19-01164 19-01164 19-01164 19-01164 19-01164
27-00558 27-00558 27-00558 27-00558 27-00558 27-00558
27-00592 27-00592 27-00592 27-00592 27-00592 27-00592
23-50793 23-50793 23-50793 23-50793 23-50793 23-50793
19-13932 19-13932 19-13932 19-13932 19-13932 19-13932
19-01091 19-01091 19-01091 19-01091
BLG/TLG
27HD
BLG/TLG
48HD
BLG/TLG
52HD
BLG/TLG
74HD
BLG/TLG
80HD
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Accessories (Includes HD Models)
BLG/TLG BLG/TLG BLG/TLG BLG/TLG BLG/TLG BLG/TLG
Description 12HD 27HD 48HD 52HD 74HD 80HD
Baskets (Cantilever)
20” X 22” X 5”
Baskets(Conventional)
22”X 22-3/4”X 5”
Baskets(Conventional)
24-3/4”X22”X5”
Casters (4) 3” Diameter
Casters (6) 3” Diameter
33-01458
33-01419 33-01419
33-01376 33-01376
A20011140 A20011140 A200-11140 A200-11140
A212-11140 A212-11140
33-01458
Legs 6” A20011170 A20011170 A200-11170 A200-11170 A212-11170 A212-11170
Shelves (Cantilever)
33-01586 33-01473 33-01474 33-01475 33-01474 33-01475
Shelve, Bottom 33-01402 33-01453 33-01448 33-01453 33-01448
Shelving Clips (4)
33-01011 33-01011 33-01011 33-01011 33-01011 33-01011
SALE AND DISPOSAL
OWNER RESPONSIBILITY
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 (800) 684-8988.
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.
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