True TAC-48SM-LD User manual

AIR CURTAIN
TRUE FOOD SERVICE EQUIPMENT, INC.
2001 East Terra Lane • O’Fallon, Missouri 63366-4434
(636)-240-2400 • FAX [phone] • INT'L FAX [phone] • (800)-325-6152
Parts Department (800)-424-TRUE • Parts Department FAX# [phone]
Web: www.truemfg.com
TABLE OF CONTENTS
TRUE
FOOD SERVICE EQUIPMENT,INC.
INSTALLATION MANUAL
INSTALLATION MANUAL
TAC:AIR CURTAIN
CONGRATULATIONS!
You have just purchased the finest commercial refrigerator
available. You can expect many years of trouble-free operation.
SAFETY INFORMATION
Safety Precautions 1
Proper Disposal, Connecting Electricity, & Adapter Plugs 2
INSTALLATION
Ownership, Uncrating, & How to Connect to Electricity 3
Wire Gauge Chart 3
Recommended Operating Conditions 4
Locating 5
Leveling 6
Installation of Legs or Castors 7
SETUP
Standard Accessories 8
OPERATION
Startup 11
Mechanical Temperature Controls Sequence of Operation 12
Electronic Temperature Controls Sequence of Operation 17
MAINTENANCE, CARE, CLEANING
Cleaning Condenser Coil 30
Important Warranty Information 31
Stainless Steel Equipment Care and Cleaning 32
General Maintenance 33
WARRANTY
Warranty 34
TAC-14GS-LD
TAC-48SM-LD
TAC-72-LD

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Loss or spoilage of products in your refrigerator/
freezer is not covered by warranty. In addition to
following recommended installation procedures
you must run the refrigerator/freezer 24 hours
prior to usage.
NOTICE TO CUSTOMER
WARNING: Use this appliance for its intended purpose as described in this Owner Manual.
How to Maintain Your True Refrigerator to Receive the Most Efficient and Successful Operation.
You have selected one of the finest commercial refrigeration units made. It is manufactured under strict quality controls with only the best
quality materials available.Your TRUE cooler when properly maintained will give you many years of trouble-free service.
TO LOCATE REFRIGERANT TYPE, SEE SERIAL LABEL INSIDE CABINET. This cabinet may contain fluorinated greenhouse
gas covered by the Kyoto Protocol (please refer to cabinet’s inner label for type and volume, GWP of 134a= 1,300. R404a= 3,800).
FOR HYDROCARBON REFRIGERATION ONLY (R-290) SEE BELOW:
• DANGER - Risk of fire or explosion. Flammable refrigerant used. Do not use mechanical devices to defrost refrigerator. Do not
puncture refrigerant tubing.
• DANGER - Risk of fire or explosion. Flammable refrigerant used. To be repaired only by trained service personnel. Do not puncture
refrigerant tubing.
• CAUTION - Risk of fire or explosion. Flammable refrigerant used. Consult repair manual/owner’s guide before attempting to service
this product. All safety precautions must be followed.
• CAUTION - Risk of fire or explosion. Dispose of properly in accordance with federal or local regulations. Flammable refrigerant used.
• CAUTION - Risk of fire or explosion due to puncture of refrigerant tubing; follow handling instructions carefully. Flammable refrigerant
used.
• CAUTION - Keep clear of obstruction all ventilation openings in the appliance enclosure or in the structure for building-in.
SAFETY INFORMATION
SAFETY PRECAUTIONS
When using electrical appliances, basic safety precautions should be
followed, including the following:
• This refrigerator must be properly installed and located in
accordance with the Installation Instructions before it is used.
• Do not allow children to climb, stand or hang on the shelves
in the refrigerator. They could damage the refrigerator and
seriously injure themselves.
• Do not touch the cold surfaces in the freezer compartment
when hands are damp or wet. Skin may stick to these
extremely cold surfaces.
• Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance. Do not store
explosive substances such as aerosol cans with a flammable
propellant in this appliance.
• Keep fingers out of the “pinch point” areas; clearances between
the doors and between the doors and cabinet are necessarily
small; be careful closing doors when children are in the area.
• Unplug the refrigerator before cleaning and making repairs.
• Setting temperature controls to the 0 position does not
remove power to the light circuit, perimeter heaters, or
evaporator fans.
NOTE: We strongly recommend that any servicing be preformed
by a qualified technician.

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115/60/1
NEMA-5-15R
115/208-230/1
NEMA-14-20R
115/60/1
NEMA-5-20R
208-230/60/1
NEMA-6-15R
RISK OF CHILD
ENTRAPMENT
PROPER DISPOSAL OF THE REFRIGERATOR
Child entrapment and suffocation are not problems of the past.
Junked or abandoned refrigerators are still dangerous… even if they
will sit for “just a few days.” If you are getting rid of your old refrigera-
tor, please follow the instructions below to help prevent accidents.
BEFORE YOU THROW AWAY YOUR OLD
REFRIGERATOR OR FREEZER:
• Take off the doors.
• Leave the shelves in place so that children may not easily climb
inside.
APPLIANCE DISPOSAL
When recycling appliance please make sure that the refrigerants are
handled according to local and national codes, requirements and
regulations.
REFRIGERANT DISPOSAL
Your old refrigerator may have a cooling system that uses “Ozone
Depleting” chemicals. If you are throwing away your old refrigerator,
make sure the refrigerant is removed for proper disposal by a quali-
fied service technician. If you intentionally release any refrigerants you
can be subject to fines and imprisonment under provisions of the
environmental regulations.
USE OF EXTENSION CORDS
NEVER USE AN EXTENSION CORD! TRUE will not war-
ranty any refrigerator that has been connected to an extension cord.
REPLACEMENT PARTS
• Component parts shall be replaced with like components.
• Servicing shall be done by authorized service personnel, to
minimize the risk of possible ignition due to incorrect parts or
improper service.
• Lamps must be replaced by identical lamps only.
• If the supply cord is damaged, it must be replaced by a special
cord or assembly available from the manufacturer or its service
agent.
HOW TO CONNECT ELECTRICITY
DO NOT, UNDER ANY CIRCUMSTANCES, CUT OR
REMOVE THE GROUND PRONG FROM THE POWER
CORD. FOR PERSONAL SAFETY, THIS APPLIANCE
MUST BE PROPERLY GROUNDED.
The power cord from this appliance is equipped with a grounding
plug which minimizes the possibility of electric shock hazard.
Have the wall outlet and circuit checked by a qualified electrician to
make sure the outlet is properly grounded.
If the outlet is a standard 2-prong outlet, it is your personal respon-
sibility and obligation to have it replaced with the properly grounded
wall outlet.
The refrigerator should always be plugged into it’s own individual
electrical circuit, which has a voltage rating that matches the rating
plate.
This provides the best performance and also prevents overloading
building wiring circuits which could cause a fire hazard from over-
heated wires.
Never unplug your refrigerator by pulling on the power cord. Always
grip plug firmly and pull straight out from the outlet.
Repair or replace immediately all power cords that have become
frayed or otherwise damaged. Do not use a cord that shows cracks
or abrasion damage along its length or at either end.
When removing the refrigerator away from the wall, be careful not
to roll over or damage the power cord.
If supply power cord is damaged it should be replaced with original
equipment manufacture parts. To avoid hazard this should be done
by a qualified service technician.
USE OF ADAPTER PLUGS
NEVER USE AN ADAPTER PLUG! Because of potential safety
hazards under certain conditions, we strongly recommend against the
use of an adapter plug.
The incoming power source to the cabinet including any adapters
used must have the adequate power available and must be properly
grounded. Only adapters listed with UL should be used.
NORTH AMERICA USE ONLY!
NEMA plugs
TRUE uses these types of plugs. If you do not have the right outlet
have a certified electrician install the correct power source.
NOTE: International plug configurations vary by voltage and country.
WARNING!DANGER!

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230 Volts Distance In Feet To Center of Load
Amps 20 30 40 50 60 70 80 90 100 120 140 160
5 14 14 14 14 14 14 14 14 14 14 14 14
6 14 14 14 14 14 14 14 14 14 14 14 12
7 14 14 14 14 14 14 14 14 14 14 12 12
8 14 14 14 14 14 14 14 14 14 12 12 12
9 14 14 14 14 14 14 14 14 12 12 12 10
10 14 14 14 14 14 14 14 12 12 12 10 10
12 14 14 14 14 14 14 12 12 12 10 10 10
14 14 14 14 14 14 12 12 12 10 10 10 8
16 14 14 14 14 12 12 12 10 10 10 8 8
18 14 14 14 12 12 12 10 10 10 8 8 8
20 14 14 14 12 10 10 10 10 10 8 8 8
25 14 14 12 12 10 10 10 10 8 8 6 6
30 14 12 12 10 10 10 8 8 8 6 6 6
35 14 12 10 10 10 8 8 8 8 6 6 5
40 14 12 10 10 8 8 8 6 6 6 5 5
50 12 10 10 8 6 6 6 6 6 5 4 4
60 12 10 8 6 6 6 6 6 5 4 4 3
70 10 10 8 6 6 6 5 5 4 4 2 2
80 10 8 8 6 6 5 5 4 4 3 2 2
90 10 8 6 6 5 5 4 4 3 3 1 1
100 10 8 6 6 5 4 4 3 3 2 1 1
115 Volts Distance In Feet To Center of Load
Amps 20 30 40 50 60 70 80 90 100 120 140 160
2 14 14 14 14 14 14 14 14 14 14 14 14
3 14 14 14 14 14 14 14 14 14 14 14 12
4 14 14 14 14 14 14 14 14 14 12 12 12
5 14 14 14 14 14 14 14 12 12 12 10 10
6 14 14 14 14 14 14 12 12 12 10 10 10
7 14 14 14 14 14 12 12 12 10 10 10 8
8 14 14 14 14 12 12 12 10 10 10 8 8
9 14 14 14 12 12 12 10 10 10 8 8 8
10 14 14 14 12 12 10 10 10 10 8 8 8
12 14 14 12 12 10 10 10 8 8 8 8 6
14 14 14 12 10 10 10 8 8 8 6 6 6
16 14 12 12 10 10 8 8 8 8 6 6 6
18 14 12 10 10 8 8 8 8 8 8 8 5
20 14 12 10 10 8 8 8 6 6 6 5 5
25 12 10 10 8 8 6 6 6 6 5 4 4
30 12108866665443
35 10 10 8 6 6 6 5 5 4 4 3 2
40 1088665544322
45 1086665443321
50 1086654433211
WIRE GAUGE CHART
OWNERSHIP
To ensure that your unit works properly from the first day, it must
be installed properly. We highly recommend a trained refrigeration
mechanic and electrician install your TRUE equipment. The cost of a
professional installation is money well spent.
Before you start to install your TRUE unit, carefully inspect it for
freight damage. If damage is discovered, immediately file a claim with
the delivery freight carrier.
TRUE is not responsible for damage incurred during shipment.
UNCRATING
TOOLS REQUIRED
•Adjustable Wrench
•Phillips Screwdriver
• Level
The following procedure is recommended for uncrating the unit:
A. Remove the outer packaging, (cardboard and bubbles or
Styrofoam corners and clear plastic). Inspect for concealed
damage. Again, immediately file a claim with the freight carrier
if there is damage.
B. Move your unit as close to the final location as possible before
removing the wooden skid.
ELECTRIC INSTALLATION & SAFETY
INFORMATION
• If the supply cord is damaged, it must be replaced by a special
cord or assembly available from the manufacturer or its service
agent.
• Lamps must be replaced by identical lamps only.
• Appliance tested according to the climate classes 5 and 7
temperature and relative humidity.
ELECTRICAL INSTRUCTIONS
A. Before your new unit is connected to a power supply, check the
incoming voltage with a voltmeter. If anything less than 100% of
the rated voltage for operation is noted, correct immediately.
B. All units are equipped with a service cord, and must be
powered at proper operating voltage at all times. Refer to
cabinet data plate for this voltage.
TRUE RECOMMENDS THAT A SOLE USE CIRCUIT BE
DEDICATED FOR THE UNIT.
WARNING: Compressor warranties are void if compressor burns
out due to low voltage.
WARNING: Power supply cord ground should not be removed!
WARNING: Do not use electrical appliances inside the food stor-
age compartments of the appliances unless they are of the type
recommended by the manufacturer.
NOTE: To reference wiring diagram, remove front louvered grill,
wiring diagram is positioned on the inside cabinet wall.
INSTALLATION

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INSTALLATION TIPS
• Do not place into direct sunlight.
• No HVAC supply or return air vents pushing air into or pulling
air out of cabinet.
• No ceiling fans.
• No doorways.
• Make sure cabinet is level from back-to-back and side-to-side.
NOTE: Check for correct clearance space in back of cabinet and
above. A 4-INCH (102 mm) clearance requirement for the rear of
cabinet and 12-INCH (305 mm) clearance above cabinet.
• Maximum ambient condition 75 degrees and
55% Relative Humidity.
• Place cabinet in an area that will not have any air drafts.
• Excessive airflow around cabinet can effect interior cabinet
airflow (air-curtain).
TAC RECOMMENDED OPERATING CONDITIONS
4 inches
102 mm
12 inches
305 mm
A
I
R
F
L
O
W
A
I
R
F
L
O
W
≤ 75ºF
≤ 23ºC
≤ 55%
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X

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Images 4-6, removing skid from bottom of cabinet.
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4
3
LOCATING
WARNING: BE SURE THERE IS ADEQUATE
VENTILATION IN YOUR ROOM. MAXIMUM AMBIENT
CONDITION 75 DEGREES AND 55% RELATIVE
HUMIDITY.WARRANTY IS VOID IF VENTILATION IS
INSUFFICIENT.
CLEARANCES
For proper cabinet operation, clearance guidelines should be
followed.
AIR CURTAINS – 4" at the rear and 12" at the top.
A. Remove louver from the front of cabinet and backguard (if
applicable) from rear of cabinet. Remove louver grill by backing
out Phillips screws located on either side of the louver grill. See
image 1. Pull the louver grill out from the cabinet front. See
image 2. To reinstall grill, place louver grill back into brackets
located at the base of the unit. See image 3. Snap top of louver
grill into place. Replace screws).
B. Skid bolts are located in each of 4 corners inside cabinet
bottom. See image 4.
C. Remove skid bolts. See image 5.
D. Cut straps if applicable. See image 6.
E. Carefully lift cabinet off of skid.
TAC-14GS-LD GRILL REMOVAL:
Remove two screws from either side of the front grill. See image 7.
Lift grill away front cabinet. See image 8.
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LEVELING
A. Set unit in its final location. Be sure there is adequate ventilation
in your room. Under extreme heat conditions, (100°F+,
38°C+), you may want to install an exhaust fan.
WARNING: WARRANTY IS VOID IF VENTILATION IS
INSUFFICIENT.
B. Proper leveling of your TRUE cooler is critical to operating
success (for non-mobile models). Effective condensate removal
and door operation will be effected by leveling.
C. The cooler should be leveled front to back and side to side with
a level.
D. Ensure that the drain hose or hoses are positioned in the pan.
E. Free plug and cord from inside the lower rear of the cooler (do
not plug in).
F. The unit should be placed close enough to the electrical supply
so that extension cords are never used.
WARNING: CABINET WARRANTIES ARE VOID IF
OEM POWER CORD IS TAMPERED WITH.TRUE
WILL NOT WARRANTY ANY UNITS THAT ARE
CONNECTED TO AN EXTENSION CORD.
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10
TAC-48SM-LD GRILL REMOVAL:
Remove the 2 Phillips screws on the top of the grill. See image 9.
With Phillips screws removed, tilt grill forward from the top to
release the grill from the retaining clips on the bottom.
See image 10.

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INSTALLATION OF LEGS AND CASTORS
LEG LEVELERS:
If the cabinet is not level use an open-end wrench and turn adjustable
tips on legs until cooler is level. (See image 1).
CASTOR INSTALLATION: (KIT CONTENTS)
2Castor mounting bracket
2Castor, 2-1/2" diameter wheel with 3/8" - 16 x 1-1/2" threaded
stem without brake
2Castor, 2-1/2" diameter wheel with 3/8" - 16 x 1-1/2" threaded
stem with brake
4Washer, flat, 3/8" I.D. x 1" O.D.
4Washer, split lock, 3/8" I.D.
4Nut, hex, 3/8" - 16 (See image 2).
CAUTION
To avoid damage to lower rail assembly, slowly raise unit to upright
position after installing castors.
Leg levelers in the bottom of the
cabinet can be backed out for
leveling.
1
HEX NUT
SPLIT LOCK WASHER
FLAT WASHER
TAC-30/36/48/72
RAIL ASSEMBLY
(SIMULATED)
CASTOR MOUNTING BRACKET
TAC-30/36/48/72 CASTOR KIT MOUNTING DIAGRAM
CASTOR WITHOUT
WHEEL LOCK
CASTOR WITH
WHEEL LOCK
2

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CANTILEVER SHELVING INSTALLATION:
A.Install the shelf supports into the shelf standards that are located
in the rear corners of the cabinet. See photos 1 & 2.
Shelf
Clip
Shelf
Shelf
Shelf
Standards
TAC-72-LD CANTILEVER SHELVING INSTALLATION:
A. TAC-72-LD cantilever shelves come packaged inside the
unit. Leg leveling parts may be taped to the top of the shelf
packaging. Remove leg leveling parts. See photo 3.
B. Remove cantilever shelves from packaging and protective wrap.
C. Install the shelf supports into the shelf standards that are
located in the rear corners and middle of the cabinet. See
photo 4.
3 4
1 2
STANDARD ACCESSORIES
SHELVING INSTALLATION / OPERATION
SHELF INSTALLATION:
A. Hook shelf clips onto shelf standards.
B. Position all four shelf clips equal in distance from the floor for
flat shelves.
C. Lower front of gravity feed TrueTrac organizers to enable
proper feed.
D. Place shelves on shelf clips making sure all corners are seated
properly.
NOTE: Do not load product to where it would over hang the shelf.
SETUP

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Shelf Standard
Bracket Support Tab
Angle Adjustment Tab
1
TAC-48SM-LD SHELVING INSTALLATION:
Note: For ease of installation it is recommended to install the
lower shelf first.
INSTALLING SHELF BRACKET INTO
SHELF STANDARD
STEP 1
Position the shelf bracket in front of the shelf standard. Raise the
front of the bracket up at a 45 degree angle to allow the bracket
support tab to slide in and up into the shelf standard. See image 1.
STEP 2
Slide the shelf angle adjustment tab into the shelf
standard. Position notch in bracket to support shelf
at desired angle.
STEP 3
Repeat for opposite side shelf bracket.
TAC-48SM-LD SHELVING INSTALLATION:
INSTALLING SHELF ONTO SHELF BRACKET
STEP 1
Position shelf on shelf bracket. Shelf horizontal bends on left and
right should be to the outside of the bracket
STEP 2
Lift the back of the shelf up and back to clear the shelf support
tab of the bracket. See image 2.
STEP 3
Once cleared, slide shelf forward to allow the front of the shelf to
slide under the front shelf support tab.
See image 3.
STEP 4
When installed correctly the shelf will be supported between the
notches. See image 3.
STEP 5
Repeat for additional shelves.
3
2
Shelf Support Tab

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FLAVOR STRIP INSTALLATION
A. Take the shelf and turn it around. The back of the shelf should
be facing out. See images 1-2.
B. The flavor strip snaps onto the shelf with the larger opening of
the strip toward the bottom. See images 3-4.
C. After flavor strip is installed tags can be put into the flavor strip.
See image 5.
Turn shelf around.
1 2
Flavor strip end view
3
Flavor strip install.
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STARTUP
A. The compressor is ready to operate. Plug in the cooler.
PLEASE REVIEW THE FOLLOWING CAUTIONS
WHEN THE OPTIONAL HEATED PAN IS USED.
CAUTION: This unit has two power supply cords. Unplug both
cords before moving or servicing this appliance.
CAUTION: This unit has two power supply cords. Connect
each plug to a receptacle that is connected to an
individual branch circuit.
CAUTION: This unit has more than one disconnect switch (plug).
B. Temperature controls are factory-set to give refrigerators an
approxiate temperature of 35°F (1.6ºC). Allow unit to function
several hours, completely cooling cabinet before changing the
control setting.
Temperature Control Location and Settings.
• Temperature control type will vary upon model and age of
cabinet.
• Mechanical control or electronic control without display:
- Inside cabinet
- Behind cabinet
- Behind front or rear access grill
• Electronic control with display:
- In countertop
- In top louvered panel
- In or behind bottom louvered grill
See website for adjustments, sequence of operation, and more
information.
C. Excessive tampering with the control could lead to service
difficulties. Should it ever become necessary to replace
temperature control, be sure it is ordered from your TRUE
dealer or recommended service agent.
D. Good air flow in your TRUE unit is critical. Be careful to
load product so that it neither presses against the back wall,
nor comes within four inches of the evaporator housing.
Refrigerated air off the coil must circulate down the back wall.
NOTE: If the unit is disconnected or shut off, wait five minutes
before starting again.
RECOMMENDATION - Before loading product we recommend
you run your TRUE unit empty for two to three days.This allows you
to be sure electrical wiring and installation are correct and no ship-
ping damage has occurred. Remember, our factory warranty does
not cover product loss!
LIGHT SWITCH LOCATION: The light switch is located
behind the interior light on the ceiling. Depending on the model the
switch will be either on the left or right side of the ceiling.
OPERATION

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MECHANICAL TEMPERATURE CONTROLS
COIL SENSING
An evaporator coil sensing temperature control ensures that the evaporator coil will remain clear
of frost and ice by not allowing the compressor to restart until the coil temperature is above the
freezing temperature. This is considered an off cycle defrost.
MECHANICAL TEMPERATURE CONTROL GENERAL SEQUENCE OF OPERATION
MECHANICAL CONTROL REFRIGERATOR GENERAL SEQUENCE OF OPERATION
1. Cabinet is plugged in.
a. Interior lights will illuminate on Glass Door Models only. If lights do not come on verify the light switch is in the “ON”
position. Solid door cabinets may or may not have lights that may be controlled by the door switch.
2. The compressor and evaporator fans will start if the temperature control is calling for cooling. (If the compressor does not
start, verify that the temperature control is not in the “OFF” or “0” position.)
3. The temperature control may cycle the compressor and evaporator fan(s) on and off together.
a. The temperature control is sensing the evaporator coil temperature.
b. The temperature control should be set on the #4 or #5.
c. The warmest setting is #1, the coldest is #9, and #0 is the off position.
d. The thermometer is designed to read and display a cabinet temperature not a product temperature.
The thermometer may reflect the refrigeration cycle swings of up and down temperatures.
The most accurate temperature on a cabinet's operation is to verify the product temperature.
4. There is not a defrost timer as the temperature control will initiate the off-cycle defrost during each refrigeration cycle.
a. At this time, the compressor will and the evaporator fan(s) may turn off. Defrost heaters are not installed on refrigerators
and therefore will not be energized.
b. After the evaporator coil temperature has been reached, as determined by the temperature control, the compressor will
restart.
5. There may be a timer located on the condensing unit base. This timer is not used for a defrost event. The timer will change
the rotation of the reversing condenser fan motor.

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1
INSTALLATION INSTRUCTIONS
DANFOSS TEMPERATURE CONTROL ADJUSTMENT
FOR HIGH ALTITUDE APPLICATIONS:
REQUIRED TOOLS:
• Allen Wrench (5/64")
• Torx Screw (T-7)
TERMS:
Cut-out - Temperature sensed by the controller that shuts the
compressor off.
Cut-in - Temperature sensed by the controller that turns the
compressor on.
WHEN TO MAKE AN ADJUSTMENT TO A MECHANICAL TEMPERATURE CONTROL
OPERATION INSTRUCTIONS:
REQUIRED TOOLS:
• Jewelers Screw Driver (Small Screw Driver)
GE CONTROL INSTRUCTIONS:
The scale to the right may be used as a guide for measuring
degrees of rotation required for altitude correction. See Figure 1.
The arrows indicate direction of screw rotation. Turn calibration
screw clockwise to obtain warmer operating temperatures.
NOTE: Each 1/4 turn of the calibration screw is equal to
approximately 2 degrees F. Do not make more than 3/4 turn.
After making adjustment, measure temperature during three
cycles before adjusting again.
NOTE: Only adjust the screw
(small flathead) on the face of
the control (next to the cam).
See Figure 3.
Follow the Altitude Correction
Table to the right.
W
A
R
M
E
R
C
O
L
D
E
R
60
30
45
40
35
50
55
15
20
25
10
5
We advise to make a mechanical temperature control adjustment only for a high altitude location.
Compressor
Ter minals
Ground
Ter minal
To adjust the temperature control
take the control knob off to view the
cut-in screw. (See Photo Above)
Front of Temperature Control
Calibration
Screw
1 2
3
Cut-out Adjustment
Screw Allen (5/64" or 2 mm.)
Cut-in Adjustment
Screw Torx (T-7)
Compressor
Connection
ALTITUDE CORRECTION TABLE:
CALIBRATION SCREW ADJUSTS
BOTH CUT-IN AND CUT-OUT
Altitude (Feet)
2000
3000
4000
5000
6000
7000
8000
9000
10,000
Clockwise Turns
7/60
11/60
15/60
19/60
23/60
27/60
30/60
34/60
37/60
Compressor Connection
(double terminal)
HOW TO ADJUST A MECHANICAL TEMPERATURE CONTROL
Altitude Correction
Scale Guide for Measuring Back of Temperature Control
Bottom of Temperature Control

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INSTALLATION INSTRUCTIONS
TEMPERATURE CONTROL ALTITUDE ADJUSTMENT:
REQUIRED TOOLS:
•Allen Wrench (5/64”)
•Torx Screw (T-7)
The scale to the right may be used as a guide for measuring degrees of rotation required for altitude
correction. The arrows indicate direction of screw rotation. See Figure 1.
IMPORTANT: Upright models ordered with “High Altitude” temperature controls are
pre-calibrated and do not require adjustment.
90
180
270
360
1
Scale Guide for Measuring
INSTRUCTIONS: DANFOSS TEMPERATURE CONTROL ADJUSTMENT FOR
HIGH ALTITUDE APPLICATIONS
STEP 1 - Unplug cooler.
STEP 2 - Remove the screws that secure the temperature control to the inset box.
STEP 3 - To make these adjustments it may be necessary to remove the temperature control from the housing.
NOTE: You may have to remove the wires attached to the control. Take note as to which wire is on which spade terminal.
STEP 4 - Pull out gently from cabinet.
NOTE: Mechanical temperature controllers are affected when functioning at high altitude.
The cut-in and cut-out temperatures will be colder than when the controller functions closer to sea level.
STEP 5 - For high elevation installations, it may be necessary to “warm-up” the set points. To make the adjustment, insert the
appropriate tool in each adjustment screw and turn 1/4 of a revolution clockwise (to the right). This procedure will adjust both
the cut-in and cut-out about 2˚F warmer.
STEP 6 - Make sure to reconnect the wires to the proper spade terminal when reinstalling.
INSTRUCTIONS: CUTLER HAMMER TEMPERATURE CONTROL ALTITUDE ADJUSTMENT
STEP 1 - Unplug cooler.
STEP 2 - Turn the temperature control to the “9” position.
STEP 3 - Remove the screws that secure the mounting plate to the evaporator top. See Figure 2.
STEP 4 - Pull control down gently from housing.
STEP 5 - Turn screws counterclockwise (CCW).
STEP 6 - Reassemble to cooler housing and return the temperature control to the “5” position.

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O
9
8
7
6
5
4
3
2
1
2
O
9
8
7
5
4
3
2
1
CUT
OUT
CUT
IN
COLDER
BUL. NO.
CHART
CCW Adjustment
(based on 360°/
complete turn)Height
2000' 42°
3000' 78°
4000' 114°
5000' 150°
6000' 186°
7000' 222°
8000' 258°
9000' 294°
10,000' 330°

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NOTICE: If timer is not set for a minimum of 3 defrost per day
for 30 minutes each, the coil may develop excessive frost.This may
lead to system failure and product loss, which is not covered under
warranty.
The following procedure may be followed to customize your needs.
High usage, high temperature, and high humidity may require 4
defrost settings per day.
WARNING: Always follow the manufacturer’s recommended
settings when programming the amount and duration of the defrost
cycles.
STEP 1: The white tabs located on the outmost area of the time
clock have been factory set for (6:00 a.m., 2:00 p.m., and 10:00
p.m.). Each tab represents 15 minutes of defrost time. Notice that at
each defrost time two white tabs are set for 15 minutes each for a
total of 30 minutes of defrost.
STEP 2: In order to program the time to begin the defrost cycle,
flip the white tabs out to set the defrost time.To eliminate a defrost
time flip the white tabs back toward the center of the Defrost
Timer.
STEP 3: TRUE recommends a 30 minute defrost cycle three times
per day.
DEFROST TIMER
DEFROST TIME CLOCK OPERATION FOR UNITS
WITH MECHANICAL CONTROL
RECOMMENDED DEFROST SETTINGS:
TRUE Manufacturing has factory set your defrost time clock to a
recommended time and duration defrost scenario. All refrigeration
equipment operating below 30°F will accumulate frost on the evapo-
rator coil and will require routine defrost.Your TRUE equipment has
been designed for three defrost periods (6:00 a.m., 2:00 p.m. and
10:00 p.m.). If you decide to deviate from these defrost time settings
please follow the procedures for adjustment below.
TOOLS REQUIRED
• Phillips Head Screwdriver
• 1/4" Nut Driver or Socket
SETTING THE TIMER:
UNPLUG UNIT FROM POWER SUPPLY! DO NOT SET THE TIME
BY ROTATING THE “OUTER” DIAL.
Turn the minute hand clockwise until the time of day on the outer
dial is aligned with the triangle marker on the inner dial (two o’clock
position).
ADJUSTING THE DEFROST TIMER:
Your TRUE freezer contains a defrost system that is temperature
terminated, however the time clock has been designed with a time
termination back-up so that the defrost period will not exceed thirty
minutes. While TRUE requires a minimum 3 defrost periods not to
exceed 30 minutes the procedure on this page should be followed
to customize your specific needs.
1
Outer most dial.
White tabs represent 15
minutes of defrost time.
Time of day.
Inner most dial.
2

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ELECTRONIC TEMPERATURE CONTROLS
p1 = supply air (thermostat)
p2 = coil / copper line (defrost)
p3 = return air (display)
p3 probe is not installed and / or activated
in all applications with p3 is not installed
and / or activated, the display probe is p1.
DIXELL ELECTRONIC TEMPERATURE CONTROL GENERAL SEQUENCE OF OPERATION
DIXELL ELECTRONIC CONTROL GENERAL SEQUENCE OF OPERATION
1. Cabinet is plugged in.
a. Display will illuminate.
b. Interior lights will illuminate on Glass Door Models only. If lights do not come on verify the light switch is in the “ON”
position. Solid door cabinets may or may not have lights that may be controlled by the door switch.
c. Evaporator motors will come on (refrigerator only).
2. After the Dixell control preprogrammed time delay of 3-5 minutes, the compressorand freezer evaporator fan(s) will start if
the control is calling for cooling.
3. The Dixell control will cycle the compressor but may also cycle the evaporator fan(s) on and off determined
by the Set-Point and Differential temperatures.
a. The Set-Point is the adjustable preprogrammed temperature which shuts off the compressor and evaporator fan(s). This
is not the programmed cabinet temperature.
b. The Differential is the non adjustable preprogrammed temperature that is added to the Set-Point temperature that will
start the compressor and evaporator fan(s).
c. The Dixell control is designed to read and display a cabinet temperature not a product temperature.
This cabinet temperature may reflect the refrigeration cycle of the Set-Point and it’s Differential.
The most accurate temperature on a cabinets operation is to verify the product temperature.
Example: If the Set-Point is 33°F/1°C and the Differential is 8°F/4°C
(Set-Point) 33°F + 8 (Differential) = 41°F
Or
(Set-Point) 1°C + 4 (Differential) = 5°C
The compressor will cycle off 33°F/1°C and back on at 41°F/5°C
4. The Dixell control may be preprogrammed to initiate defrost at specific intervals that start when the cabinet is
plugged in.
a. At this time the “dEF” may appear on the display and compressor will turn off until a preprogrammed temperature or
duration is reached. During this time, for freezers only, evaporator fan(s) will also turn off and the coil heater and drain
tube heaters will also be energized. Some cabinets may also change the rotation of the reversing condenser
fan motor.
b. After the preprogrammed temperature has been reached or duration for defrost has expired, there may be a short delay
for both the compressor and evaporator fans to restart. At this time “dEF” may still appear on the display for a short
time.

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HOW TO START A MANUAL DEFROST:
STEP 1 - Push the (DEFROST) key for more than (2)
seconds and a manual defrost will start.
STEP 2 - By pushing the (ON/OFF) key, the instrument
shows "OFF" for 5 seconds and then the
ON/OFF LED switch ON.
DIGITAL TEMPERATURE CONTROL COMMANDS:
Use of LED: Each LED function is described in the table below.
Key Combinations:
To lock & unlock the keyboard.
To enter the programming mode.
To exit the programming mode.
ALARM SIGNALS
MESSAGE CAUSE OUTPUTS
“P1” Thermostat probe failure Alarm output ON; Compressor output according to
“COn” and “COF”
“P2” Evaporator probe failure Alarm output ON; Other outputs unchanged
“P3” Auxiliary probe failure Alarm output ON; Other outputs unchanged
“HA” Maximum temperature
alarm Alarm output ON; Other outputs unchanged
“LA” Minimum temperature
alarm Alarm output ON; Other outputs unchanged
“EE” Data or memory failure Alarm output ON; Other outputs unchanged
“dA” Door switch alarm Alarm output ON; Other outputs unchanged
“EAL” External alarm Alarm output ON; Other outputs unchanged
“BAL” Serious external alarm Alarm output ON; Other outputs OFF
“PAL” Pressure switch alarm Alarm output ON; Other outputs OFF
LED MODE FUNCTION
ON The compressor is running
FLASHING - Programming phase (flashing with LED )
- Anti-short cycle delay enabled
ON The fan is running
FLASHING Programming phase (flashing with LED )
ON The defrost is enabled
NOTE: To silence alarm, press any button on keypad.
HOW TO LOCK / UNLOCK THE KEYS:
STEP 1 - Press the (UP) and (DOWN) keys at the same
time for more than (3) seconds.
STEP 2 - The “POF” message will be displayed if the
keyboard is locked. At this point, it is only possible to view
the set point, MAXIMUM / MINIMUM temperature stored.
STEP 3 - To unlock the keyboard, press the (UP) and
(DOWN) keys at the same time for more than (3)
seconds.The "Pon" message will be displayed.
USING THE DIXELL ELECTRONIC CONTROL
1
Dixell Control XW60VS

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THE SET POINT IS WHERE THE COMPRESSOR WILL
SHUT OFF.
HOW TO SEE AND MODIFY THE SET POINT:
STEP 1 - Model XW60VS push and immediately release
the (SET) key. Model XR160C push and hold the (SET)
key: The display will show the (SET) point value.
STEP 2 - The (SET LED) will start blinking.
STEP 3 - To change the (SET) value, push the (UP) or
(DOWN) arrows within (10) seconds.
STEP 4 - To memorize the new set point value, push
the (SET) key again or wait (10) seconds.
THE LOCAL DISPLAY SHOWS WHICH
PROBE IS READING.
HOW TO SEE “LOD” LOCAL DISPLAY:
STEP 1 - Press and hold the (SET) and (DOWN)
arrows at the same time for (7-12) seconds.
STEP 2 - You should then see (HY).
STEP 3 - Release the keys.
STEP 4 - Press the down arrow until you see the
letters (LOD).
STEP 5 - Press the (SET) button. You should see P1,
P2, P3. This is the probe used for the display. (All probes
may not be used in some applications). To change, press
the (UP / DOWN) arrow to set a new number and then
push the (SET) button to save these changes.
Wait 10 seconds for control to display temperature.
1
Dixell Control XW60VS
1
Dixell Control XW60VS