True Manufacturing Company GDM Series User manual

TEC_TM_020 REV. A 07/9/2020 Page ii of 20
GDM with health safety tiMer
TRUE MANUFACTURING CO., 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
TRUE
ManufacturinG co., inc.INSTALLATION MANUAL
INSTALLATION MANUAL
GDM WITH HEALTH SAFETY TIMER
CONGRATULATIONS!
You have just purchased the finest commercial refrigerator
available. You can expect many years of trouble-free operation.
TABLE OF CONTENTS
SAFETY INFORMATION
Safety Precautions 1
Proper Disposal, Connecting Electricity, & Adapter Plugs 2
INSTALLATION
Ownership & Uncrating 3
Wire Gauge Chart & Electrical Installation 4
Locating and Leveling 5
Installation of Legs or Castors 6
Sealing Cabinet to the Floor 7
SETUP
Standard Accessories 8
Shelf Installation 8
UPS Battery Back Up Operation 9
Definitions for Illuminated LED Indicators 10
Emergency Release Pull Cord Operation 10
OPERATION
Startup 11
Health Safety Timer (HST) Start Up and Operation 12
Health Safety Timer General Sequence of Operation 13
HST Touch Sensing Display Instructions 14-15
MAINTENANCE, CARE, CLEANING
Cleaning Condenser Coil 16
Important Warranty Information 17
Stainless Steel Equipment Care and Cleaning 18
WARRANTY
Warranty 19
GDM-26-LD
GDM-26F-LD
GDM-23-LD
GDM-23F-LD

TRUE
glass door merchandisers - health safety timer www.truemfg.com
TEC_TM_020 REV. A07/9/2020
Page iii of 20

TRUE
glass door merchandisers - health safety timer www.truemfg.com
TEC_TM_020 REV. A 07/9/2020 Page 1 of 20
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.

TRUE
glass door merchandisers - health safety timer www.truemfg.com
TEC_TM_020 REV. A07/9/2020
Page 2 of 20
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
refrigerator, 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 qualified 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
responsibility 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
overheated 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.
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
WARNING!DANGER!

TRUE
glass door merchandisers - health safety timer www.truemfg.com
TEC_TM_020 REV. A 07/9/2020 Page 3 of 20
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.
C. Remove door bracket on swinging glass door models (see
image 1-2). Do not throw the bracket or blocks away. For
future cabinet movement the bracket and blocks will need to
be installed so the glass door does not receive any damage.
NOTE: KEYS FOR COOLERS WITH DOOR LOCKS
ARE LOCATED IN WARRANTY PACKETS.
INSTALLATION
12

TRUE
glass door merchandisers - health safety timer www.truemfg.com
TEC_TM_020 REV. A07/9/2020
Page 4 of 20
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 12 10 8 8 6 6 6 6 5 4 4 3
35 10 10 8 6 6 6 5 5 4 4 3 2
40 10 8 8 6 6 5 5 4 4 3 2 2
45 10 8 6 6 6 5 4 4 3 3 2 1
50 10 8 6 6 5 4 4 3 3 2 1 1
WIRE GAUGE CHART
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
storage 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.

TRUE
glass door merchandisers - health safety timer www.truemfg.com
TEC_TM_020 REV. A 07/9/2020 Page 5 of 20
LOCATING
A. Remove louver from the front of cabinet (see page 19
for louver grill removal / reinstallation) and backguard (if
applicable) from rear of cabinet.
B. Skid bolts are located in each of 4 corners inside cabinet
bottom. (See photo A).
C. Remove skid bolts. (See photo B).
D. Cut straps if applicable. (See photo C).
E. Carefully lift cabinet off of skid.
F. Appliance tested according to the climate classes 5 and 7 for
temperature and relative humidity.
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.
B
C
ARemoving skid from
bottom of cabinet.
When moving cabinet DO NOT push
on door hinges.
NOTE
P
NEPCO/CENTRALAB
1227-5
REMOVECOVERMAKEPOWERCONNECTION

TRUE
glass door merchandisers - health safety timer www.truemfg.com
TEC_TM_020 REV. A07/9/2020
Page 6 of 20
INSTALLATION OF CASTORS OR
OPTIONAL LEGS
Important Safeguard for installation of leg/castor. Images 1-5
demonstrate procedure.
SECURING CASTORS AND LEGS
To obtain maximum strength and stability of the unit, it is important
that you make sure each castor is secure. Optional legs are hand-
tightened securely against the lower rail assembly see image 4-5.
The bearing race on the castor or the top edge of the leg must
make firm contact with the rail.
LEVELING SHIMS
Four leveling shims have been provided for leveling castored units
positioned on uneven floors. Shims must be positioned between rail
end and bearing race.
A. Turn the bearing race counter-clockwise until the cabinet is
level. Level front to back and side to side. (diagonally)
B. Install the desired number of shims, making sure the slot of
the shim is in contact with the threaded stem of the castor.
See image 2.
C. If more than one shim is used, turn the slot at a 90° angle so
they are not in line.
D. Turn the bearing race clockwise to tighten and secure the
castor by tightening the anchoring bolt with a 3/4 inch open-
end wrench or the tool provided. See image 3.
CAUTION: TO AVOID DAMAGE TO LOWER RAIL
ASSEMBLY, SLOWLY RAISE UNIT TO UPRIGHT
POSITION.
NOTE: OPEN HOLES LOCATED ON THE CROSS
MEMBERS OF THE FRAME RAIL SHOULD BE
PLUGGED BEFORE UNIT IS IN USE.
Rail End
Lower Rail
Assembly
Snug Fit
Here
Leveling Shim
CastorLeg
Bearin
g
Race
Lower Rail Assembly
Snug Fit
Here
Rail End
Thread castor into the underside of
cabinet frame rail.
1
For leveling, insert the shim between
castor and frame rail.
2
Use the tool provided to tighten the
castor into place.
3
Thread leg into cabinet bottom
frame rail.
4
5
The end of the leg is adjustable for
easy leveling.

TRUE
glass door merchandisers - health safety timer www.truemfg.com
TEC_TM_020 REV. A 07/9/2020 Page 7 of 20
SEALING CABINET TO FLOOR
STEP 1 - Position Cabinet - Allow one inch between the wall
and rear of the GDM refrigerator to assure proper ventilation. For
GDM freezers 3 inches between the wall and rear of the cabinet
will assure proper ventilation.
STEP 2 - Level Cabinet - Cabinet should be level, side to side and
front to back. Place a carpenter’s level in the interior floor in four
places:
A. Position level in the inside floor of the unit near the doors.
(Level should be parallel to cabinet front). Level cabinet.
B. Position level at the inside rear of cabinet. (Again level should
be placed parallel to cabinet back).
C. Perform similar procedures to steps A & B by placing the level
on inside floor (left and right sides - parallel to the depth of
the cooler). Level cabinet.
STEP 3 - Draw an outline on the base on the floor.
STEP 4 - Raise and block the front side of the cabinet.
STEP 5 - Apply a bead of “NSF Approved Sealant”, (see list
below), to floor on half inch inside the outline drawn.The bead must
be heavy enough to seal the entire cabinet surface when it is down
on the sealant.
STEP 6 - Raise and block the rear of the cabinet
STEP 7 - Apply sealant on floor as outlined in Step 5 on other
three sides.
STEP 8 - Examine to see that cabinet is sealed to floor around
entire perimeter.
NOTE: Asphalt floors are very susceptible to chemical attack. A
layer of tape on the floor prior to applying the sealant will protect
the floor.
NSF APPROVED SEALANTS:
1. Minnesota Mining #ECU800 Caulk
2. Minnesota Mining #ECU2185 Caulk
3. Minnesota Mining #ECU1055 Bead
4. Minnesota Mining #ECU1202 Bead
5. Armstrong Cork - Rubber Caulk
6. Products Research Co. #5000 Rubber Caulk
7. G.E. Silicone Sealer
8. Dow Corning Silicone Sealer

TRUE
glass door merchandisers - health safety timer www.truemfg.com
TEC_TM_020 REV. A07/9/2020
Page 8 of 20
Shelf
Clip
Shelf
Shelf
Organizer
Pillaster
(I-beam)
Shelf
Standards
Retainer
Clip
T-Series
& GDM-5
Airflow
Guard
SETUP
WARNING!
Do not use pliers or any
crimping tools when installing
shelf clips. Altering shelf
clips in any way can lead to
shelving instability.
SHELF CLIP INSTALLATION:
For Proper Shelf Clip Installation Please Read The Following
Instructions.
STEP 1
Install the top tab of the shelf clip into the proper hole. Push up on
the bottom of the clip. (See image 1).
STEP 2
Bottom tab of the shelf clip will fit tightly.You may need to squeeze
or twist the bottom of the shelf clip to install. (See image 2 & 3).
STEP 3
After installation, the shelf clip will fit snug into the shelf standard.
The shelf clip should not be loose or able to wiggle out of the shelf
standard.
SHELF CLIP INSTALLATION TIPS
1. Install all the shelf clips before installing the shelves.
2. Start at the bottom in terms of shelf installation and work
your way up.
3. Always lay the back of each shelf down on the rear clips
before the front.
Installing top tab of shelf clip
1
You may need to squeeze or twist
the bottom of the shelf clip to
install
3
Installing bottom of the shelf
clip
2
Shelf clip installation complete
4
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.
WIRE SHELVES: Wire shelves are oriented so that cross
support bars are facing down.
NOTE: GDM-5 models include an airflow guard on the rear of
shelves to maintain an air space at the rear of the cabinet. (see
illustration).

TRUE
glass door merchandisers - health safety timer www.truemfg.com
TEC_TM_020 REV. A 07/9/2020 Page 9 of 20
UPS BATTERY BACKUP OPERATION
THE UPS BATTERY BACKUP SYSTEM IS SHIPPED IN THE "OFF" POSITION AND WILL NEED TO BE
SWITCHED "ON" TO PROVIDE VOLTAGE TO THE ELECTRONIC CONTROL DURING A POWER OUTAGE.
A. From the back of the cabinet, locate the blue "Notice" sticker next to the UPS power switch. (See image 1)
B. Press and hold the power switch for 2 seconds and then release. The power switch will illuminate green when the UPS is
providing power.
C. Allow the cabinet to run for at least 8 hours to allow the UPS Battery Backup system to properly charge.
1
BASIC OPERATION:
1. BATTERY AND SURGE PROTECTED OUTLETS
The unit has a battery powered/surge suppression outlet to
ensure temporary uninterrupted operation of your electronic
control only during a power failure.
2. POWER SWITCH
To turn the UPS on, press the power button for
approximately 2 seconds - you will hear a constant tone (1
second) - and release after a short beep.
To turn the UPS off, press the power button for
approximately 2 seconds - you will hear a constant tone (1
second) - and release after two short beeps.
Quickly press the POWER button twice can turn off or turn
on the audible Alarm. The default setting is for the Alarm On.
To turn the alarm off, quickly press the power button twice.
You will hear two short beeps when the alarm is turned off.
To turn the alarm back on, quickly press the power button
twice. You will hear a short beep when the alarm is turned
on.
*When the alarm is turned off, there will be no audible
notification when the UPS reaches a low battery state.
3. POWER ON INDICATOR (GREEN)
This LED is illuminated when the utility power is normal
and the UPS outlets are providing power, free of surges and
spikes
4. ELECTRICAL WIRING FAULT INDICATOR (RED)
ON SIDE OF UPS
This LED indicator will illuminate to warn the user that a
wiring problem exists, such as bad ground, missing ground
or reversed wiring. If this is illuminated, disconnect all
electrical equipment from the outlet and have an electrician
verify the outlet is properly wired. The unit will not provide
surge protection without being plugged into a grounded and
properly wired wall outlet.
123
4
Back of cabinet shown.

TRUE
glass door merchandisers - health safety timer www.truemfg.com
TEC_TM_020 REV. A07/9/2020
Page 10 of 20
DEFINITIONS FOR ILLUMINATED LED INDICATORS
Green LED
Power On
Red LED
Wiring Fault Audible Alarm CONDITION
On Off Off Normal
On Off Beep twice every 30
seconds
Utility Failure - The UPS is providing power to battery power-
supplied outlets from its battery.
On Off Rapid Beeping every 1/2
second
Utility Failure - The UPS is providing battery power. Rapid
beeping indicates the unit will run out of power shortly.
Off Off Constant tone
Overload - Occurs when connected equipment exceeds the listed
capacity of the UPS. Turn the UPS off, unplug at least one piece of
equipment from battery outlets, reset the circuit breaker and turn
the unit on.
On/Off On None
Electrical Wiring Fault - This indicates a wiring problem
with the AC outlet such as bad ground, missing ground, or
reversed wiring. Disconnect all electrical equipment from the outlet
and have an electrician check the outlet to insure proper wiring.
On Off 8 beeps Utility Failure - The frequency is beyond 47-63Hz.The UPS will
not turn on in line mode.
EMERGENCY RELEASE PULL CORD OPERATION
IN CASE OF AN EMERGENCY, THE DOOR MAY BE UNLOCKED AND OPENED FROM THE INSIDE WITH A
PULL CORD.
The pull cord is located on the inner side wall near the top above the data sticker and red "Emergency Release" sticker.
Emergency Release Pull Cord

TRUE
glass door merchandisers - health safety timer www.truemfg.com
TEC_TM_020 REV. A 07/9/2020 Page 11 of 20
STARTUP
A. The compressor is ready to operate. Plug in the cooler.
B. Temperature controls are factory-set to give refrigerators
an approximate temperature of 35°F (1.7°C) and freezers
an approximate temperature of -10°F (-23.3°C). Allow unit
to function several hours, completely cooling cabinet before
changing the control setting.
Temperature Control Location and Settings.
• Electronic control with display:
- 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
shipping damage has occurred. Remember, our factory warranty
does not cover product loss!
LIGHT SWITCH LOCATION: Light switch location depends
upon the GDM model. Most GDM models will have the light switch
located on the right side of the ceiling inside the unit.
OPERATION

TRUE
glass door merchandisers - health safety timer www.truemfg.com
TEC_TM_020 REV. A07/9/2020
Page 12 of 20
HEALTH SAFETY TIMER
STARTUP
A UPS battery backup is included so temperatures can still be monitored and the lock can be actuated during a power outage.
The UPS is powered "off" when shipped from True and will need to be powered "on" upon start-up (see instructions on page 9).
The cabinet's Health Safety Timer feature will not be fully operation for 8 hours. This time is required for the UPS battery back up system to
fully charge.
The UPS will provide power to the controller for a minimum of 2 hours.
When power is lost to the cabinet the UPS will beep and the control will display "Pf".
Note:The cabinet will lose its cooling capabilities when the power is lost.
When initial power is supplied to the cabinet, the control will indicate a delay.
The displayed on the control will alternate between "hSt" and "dLy".
This delay allows the cabinet to reach temperature without a false alarm. 60 minutes for a refrigerator and 105 minutes for a freezer.
If additional time or a delay event is needed, follow the directions titled "Enabling the Product Loading Delay and Servicing Delay".
OPERATION
The Health Safety Timer cabinet's operation is determined by the electronic control.
The electronic control constantly monitors the cabinet temperature.
The control will activate a locking device when preset parameters of temperature (41˚F - Refrigerator / 0˚F - Freezer) are exceeded for a
duration of 30 minutes.
These parameters are pre-programmed.
When the temperature alarm is triggered, the door will mechanically lock and the control will a provide a visual and an audible alarm.The
displayed on the control will alternate between "Loc" and "hLa".
The alarm can be cleared by following the directions titled "Clearing the Health Safety Timer Alarm".
A key is required to reset the mechanical locking device and open the door once the Health Safety Timer has been activated.
Note: It is recommended to clear the alarm on the control rst, otherwise door will relock when is closed again.
Note: In case of an emergency, the door may be opened from the inside with a pull cord (see instructions on
page 11).
If the door remains open for 5 minutes, as determined by the door switch, the control will provide a visual and an audible alarm. The
displayed on the control will show "do".
Any audible alarm can be silenced by pressing the center "Enter/Conrm" button twice.
Note:Alarm will still be displayed on control until its condition has been corrected.

TRUE
glass door merchandisers - health safety timer www.truemfg.com
TEC_TM_020 REV. A 07/9/2020 Page 13 of 20
ELECTRONIC CONTROL GENERAL SEQUENCE OF OPERATION -
HEALTH SAFETY TIMER (HST) MODELS
1. Cabinet is plugged in.
a. Display will illuminate.
b. Interior light will illuminate on Glass Door Models. Light switch is on interior ceiling.
2. After the control preprogrammed time delay of up to 6 minutes, the compressor and evaporator fan(s) will start if the
control is calling for cooling.
a. Condenser fans may be already pre-programmed from the factory so at the start of every compressor cycle the
condenser fan(s) will reverse for 30 seconds to blow dirt off the condensing coil.
3. The control will cycle the compressor and also cycle evaporator fan(s) on and off determined by the Set-Point and
Differential temperatures.
a. The Set-Point is the adjustable preprogrammed temperature.
b. The Differential is the non adjustable preprogrammed temperature.
c. The 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 its Differential, or it may show an
average temperature.
The most accurate temperature on a cabinets operation is to verify the product temperature.
4. The control is preprogrammed to initiate defrost by interval.
a. At this time the “dEF” will 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.
b. After the preprogrammed temperature or duration for defrost has been reached 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.
ELECTRONIC TEMPERATURE CONTROL GENERAL SEQUENCE OF OPERATION -
HEALTH SAFETY TIMER (HST) MODELS
t1 = Thermostat
t2 = Defrost
t3 = Display Temperature
HEALTH SAFETY TIMER

TRUE
glass door merchandisers - health safety timer www.truemfg.com
TEC_TM_020 REV. A07/9/2020
Page 14 of 20
TOUCH SENSING DISPLAY INSTRUCTIONS
DISPLAY
1.TESTING THE HEALTH SAFETY LOCK (HST / TST)
1. Touch Enter twice to unlock the display.
2. Touch Enter again to display the main menu (INF will be the first item).
3. Touch Enter to display the hSt submenu.
4. Touch Enter to display the value 00.
5. Touch +to change the value to 23.
6. Finally touch Enter
7. Clear the health safety alarm.
DISPLAY LEGEND
LED INDICATORS BUTTONS
(*) LED Off = Locked, LED ON = Unlocked
LED will blink to notify the key detection
2. CLEARING THE HEALTH SAFETY ALARM (LOC/HLA)
1. Touch Enter twice to unlock the display.This will also silence the alarm.
2. Touch Enter again to display the main menu (INF will be the first item).
3. Touch Enter to display the hSt submenu.
4. Touch Enter to display the value 00.
5. Touch +once to change the value to 01.
6. Finally touch Enter
• After 10 seconds the display will return to its normal state showing the cabinet temperature.
NOTE:
Clearing the Health Safety Alarm through the display will not unlock the cabinet. The mechanical lock will require the use of
the provided key.

TRUE
glass door merchandisers - health safety timer www.truemfg.com
TEC_TM_020 REV. A 07/9/2020 Page 15 of 20
TOUCH SENSING DISPLAY INSTRUCTIONS
DISPLAY
DISPLAY LEGEND
LED INDICATORS BUTTONS
(*) LED Off = Locked, LED ON = Unlocked
LED will blink to notify the key detection
3. ENABLING THE PRODUCT LOADING AND SERVICING DELAY (30 MINUTES FOR
REFRIGERATOR AND 75 MINUTES FOR FREEZER)
This feature is to prevent locking when loading an empty cabinet.
1. Touch Enter twice to unlock the display.
2. Touch Enter again to display the main menu (InF will be the first item).
3. Touch Enter to display hst.
4. Touch Enter to display the value 00.
5. Touch +once to change the value to 01.
6. Finally touch Enter.
4.ADJUSTING THE SET POINT
1. Touch Enter twice to unlock the display.
2. Touch Enter again to display the main menu (InF will be the first item).
3. Touch either –or +to navigate the menu and find the SP item.
4. Touch Enter to display the set-point value*.
5. Touch either –or +to increase / decrease the set point.
6. Touch Enter to save the new value.
• After 10 seconds the display will return to its normal state showing the cabinet temperature.
*NOTE:*
The set-point value (SP) is NOT the cabinet holding temperature. To maintain proper operation within a safe temperature
range and prevent an alarm activation, it is recommended to only change the value a few degrees.
• After 10 seconds the deisplay will return to the delay state showing hSt/dLY alternating.

TRUE
glass door merchandisers - health safety timer www.truemfg.com
TEC_TM_020 REV. A07/9/2020
Page 16 of 20
CLEANING THE CONDENSER COIL
When using electrical appliances, basic safety precautions should be
followed, including the following:
TOOLS REQUIRED
STEP 1 - Disconnect power to unit.
STEP 2 - Take off lower grill assembly by opening the door and
removing the screw from the top of the louver grill and pull away
from cabinet. For reinstall, reattach the grill to the magnets on front
of the cabinet and reinstall the screw on top of the grill.
• Phillips Screwdriver
• Stiff Bristle Brush
• Adjustable Wrench
• Air Tank or CO2 Tank
• Vacuum Cleaner
STEP 3 - Remove bolts anchoring compressor assembly to frame
rails and carefully slide out. (tube connections are flexible)
STEP 4 - Clean off accumulated dirt from condensing coil with a
stiff bristle brush.
STEP 5 - Lift cardboard cover above fan at plastic plugs and
carefully clean condenser coil and fan blades.
STEP 6 - After brushing condenser coil vacuum dirt from coil,
and interior floor.
Indoor Location
MAINTENANCE, CARE, CLEANING

TRUE
glass door merchandisers - health safety timer www.truemfg.com
TEC_TM_020 REV. A 07/9/2020 Page 17 of 20
IMPORTANT WARRANTY INFORMATION
Condensers accumulate dirt and require cleaning every 30 days.
Dirty condensers result in compressor failure, product loss, and lost
sales, which are not covered by warranty.
If you keep the Condenser clean you will minimize your service
expense and lower your electrical costs.The Condenser requires
scheduled cleaning every thirty days or as needed.
Air is pulled through the Condenser continuously, along with dust,
lint, grease, etc.
A dirty Condenser can result in NON-WARRANTEED part &
Compressor Failures, Product Loss, and Lost Sales.
Proper cleaning involves removing dust from the Condenser. By
using a soft brush, or vacuuming the Condenser with a shop vac, or
using CO2, nitrogen, or pressurized air.
If you cannot remove the dirt adequately, please call your
refrigeration service company.
On most of the reach-in units the condenser is accessible in the
rear of the unit.You must remove the cabinet grill to expose the
Condenser.
The Condenser looks like a group of vertical fins.You need to
be able to see through the condenser for the unit to function
at maximum capacity. Do not place filter material in front of
condensing coil.This material blocks air-flow to the coil similar to
having a dirty coil.
THE CLEANING OF THE CONDENSER IS NOT
COVERED BY THE WARRANTY!
HOW TO CLEAN THE CONDENSER:
1. Disconnect the electrical
power to the unit.
2. Remove the louvered
grill.
3. Vacuum or brush the
dirt, lint, or debris from
the finned condenser
coil.
4. If you have a significant dirt build up you can blow out the
condenser with compressed air.
(CAUTION MUST BE USED TO AVOID EYE INJURY.
EYE PROTECTION IS RECOMMENDED.)
5. When finished be sure to replace the louvered grill. The grill
protects the condenser.
6. Reconnect the electrical power to the unit.
If you have any questions, please call TRUE Manufacturing at 636-
240-2400 or 800-325-6152 and ask for the Service Department.
Direct to Service Department 1(855)372-1368. Service
Department Availability Monday-Thursday 7:00 a.m. to 7:00 p.m.,
Friday 7:00 a.m. to 6:00 p.m. and Saturday 8:00 a.m. to 12:00 p.m.
CST.
Condensing Unit
Airflow
Airflow
Condenser

TRUE
glass door merchandisers - health safety timer www.truemfg.com
TEC_TM_020 REV. A07/9/2020
Page 18 of 20
STAINLESS STEEL EQUIPMENT CARE
AND CLEANING
CAUTION: Do not use any steel wool, abrasive or chlorine based
products to clean stainless steel surfaces.
STAINLESS STEEL OPPONENTS
There are three basic things which can break down your stainless
steel’s passivity layer and allow corrosion to rear its ugly head.
1. Scratches from wire brushes, scrapers, and steel pads are
just a few examples of items that can be abrasive to stainless
steel’s surface.
2. Deposits left on your stainless steel can leave spots. You
may have hard or soft water depending on what part of the
country you live in. Hard water can leave spots. Hard water
that is heated can leave
deposits if left to sit too long. These deposits can cause the
passive layer to break down and rust your stainless steel.
All deposits left from food prep or service should be
removed as soon as possible.
3. Chlorides are present in table salt, food, and water.
Household and industrial cleaners are the worst type of
chlorides
to use.
RECOMMENDED CLEANERS FOR CERTAIN
SITUATIONS / ENVIRONMENTS OF STAINLESS
STEEL
1. Soap, ammonia and detergent medallion applied with a cloth
or sponge can be used for routine cleaning.
2. Arcal 20, Lac-O-Nu Ecoshine applied provides barrier film for
fingerprints and smears.
3. Cameo, Talc, Zud First Impression is applied by rubbing in
the direction of the polished lines for stubborn stains and
discoloring.
4. Easy-off and De-Grease It oven aid are excellent for removals
on all finishes for grease-fatty acids, blood and burnt-on foods.
5. Any good commercial detergent can be applied with a sponge
or cloth to remove grease and oil.
6. Benefit, Super Sheen, Sheila Shine are good for restoration /
passivation.
NOTE: The use of stainless steel cleaners or other such solvents
is not recommended on plastic parts. Warm soap and water will
suffice.
8 STEPS THAT CAN HELP PREVENT RUST ON
STAINLESS STEEL:
1. USING THE CORRECT CLEANING TOOLS
Use non-abrasive tools when cleaning your stainless steel
products. The stainless steel’s passive layer will not be harmed
by soft cloths and plastic scouring pads. Step 2 tells you how
to find the polishing marks.
2. CLEANING ALONG THE POLISH LINES
Polishing lines or “grain” are visible on some stainless steels.
Always scrub parallel to visible lines on some stainless steels.
Use a plastic scouring pad or soft cloth when you cannot see
the grain.
3. USE ALKALINE, ALKALINE CHLORINATED OR
NON-CHLORIDE CONTAINING CLEANERS
While many traditional cleaners are loaded with chlorides, the
industry is providing an ever increasing choice of non-chloride
cleaners. If you are not sure of your cleaner’s chloride content
contact your cleaner supplier. If they tell you that your present
cleaner contains chlorides, ask if they have an alternative.
Avoid cleaners containing quaternary salts as they can attack
stainless steel, causing pitting and rusting.
4. WATER TREATMENT
To reduce deposits, soften the hard water when possible.
Installation of certain filters can remove corrosive and
distasteful elements. Salts in a properly maintained water
softener can be to your advantage. Contact a treatment
specialist if you are not sure of the proper water treatment.
5. MAINTAINING THE CLEANLINESS OF YOUR
FOOD EQUIPMENT
Use cleaners at the recommended strength (alkaline
chlorinated or non-chloride). Avoid build-up of hard stains by
cleaning frequently. When boiling water with your stainless
steel equipment, the single most likely cause of damage
is chlorides in the water. Heating any cleaners containing
chlorides will have the same damaging effects.
6. RINSE
When using chlorinated cleaners you must rinse and wipe
dry immediately. It is better to wipe standing cleaning agents
and water as soon as possible. Allow the stainless steel
equipment to air dry. Oxygen helps maintain the passivity
film on stainless steel.
7. HYDROCHLORIC ACID (MURIATIC ACID)
SHOULD NEVER BE USED ON STAINLESS STEEL
8. REGULARLY RESTORE/PASSIVATE STAINLESS
STEEL