True GDM-07 Installation Manual

TRUE

food service equipment, inc.

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 3

Locating and Leveling 5

Installation of Legs or Castors 6

Sealing Cabinet to the Floor 8

SETUP

Standard Accessories 9

Cabinet Adjustment 11

INSTALLATION MANUAL

gdm freezer/refrigerator

GDM-23

OPERATION

Startup 13

Mechanical Temperature Controls Sequence of Operation 13

Electronic Temperature Controls Sequence of Operation 19

MAINTENANCE, CARE, CLEANING

Cleaning Condenser Coil 29

Important Warranty Information 30

Stainless Steel Equipment Care and Cleaning 31

General Maintenance 32

WARRANTY

Warranty 33

GDM-49

GDM-69

gdm freezer/refrigerator

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

INSTALLATION MANUAL

TRUE

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NOTICE TO CUSTOMER

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.

SAFETY INFORMATION

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.

WARNING: Use this appliance for its intended purpose as described in this Owner Manual.

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 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 sur faces.

• 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 f ingers 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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208-230/60/1

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WARNING!DANGER!

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

NEMA-6-15R

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INSTALLATION

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.

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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.
(See image for bracket and shipping block removal)

NOTE: KEYS FOR COOLERS WITH DOOR LOCKS
ARE LOCATED IN WARRANTY PACKETS.

3 4

5 6

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.

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WIRE GAUGE CHART

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115 Volt s 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

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

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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.

Removing skid from

A

bottom of cabinet.

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 ex tension 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

NOTE

When moving cabinet DO NOT push
on door hinges.

P

REMOVE COVER MAKE POWER CONNECTION

1227-5

NEPCO/CENTRALAB

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Lower Rail
Assembly

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Lower Rail Assembly

glass door merchandisers

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 hand­tightened 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 open­end wrench or the tool provided. See image 3.

1

Thread castor into the underside of
cabinet frame rail.

3

Use the tool provided to tighten the
castor into place.

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2

For leveling, insert the shim between
castor and frame rail.

4

Thread leg into cabinet bottom
frame rail.

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.

5

The end of the leg is adjustable for
easy leveling.

Rail End

Snug Fit
Here

Leveling Shim

Rail End

CastorLeg

Snug Fit
Here

Bearin
Race

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INSTALLING OPTIONAL CASTORS ON
GDM-10 AND GDM-12 MODELS

FINAL LOCATION

A. Place Styrofoam corners behind cooler for cushion and carefully

tilt unit on it’s back.

B. Remove the louvered grill by removing four phillips-head

screws.

C. Remove the four bolts from the skid with an adjustable wrench,

and locate the four castors. Castors are placed inside cooler,
within the bubble wrap.

D. Install one castor in each of the four female threaded areas as

indicated.

NOTE: Two out of the four castors are designated with an “F” for
front. These are provided with hand-brakes. Position these castors in
FRONT of the unit.

E. When all castors have been threaded fully, replace grill and lift

unit; positioning it into its final location.

F. Ensure that the two front castors are positioned FORWARD

as illustrated and locked down with the hand-brakes.

WARNING: Unit may tip forward if procedure “F” is not strictly
followed.

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G. Units f inal location should be adequately ventilated. Conditions

where heat exceeds 100ºF require an exhaust fan.

H. Ensure that the drain hose for hoses are positioned in the pan.

I. Free plug and cord from inside the lower rear of the cooler (Do

Not Plug In.)

WARNING: Warranty is VOID if ventilation is insufficient.

J. The unit should be placed close enough to the electrical supply

so that ex tension 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.

K. Proper leveling of your TRUE cooler is critical to operating

success. Effective condensate removal and door operation will
be effected by leveling. Adjust castors or add shims.

POSITIONING OF THE
CASTOR IS CRITICAL.
ORIENT THE CASTOR IN
THE FORWARD POSITION
AS SHOWN.

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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

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G4SM-23RGS SHELF BRACKET ASSEMBLY

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SETUP

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).

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TRUETRAC ORGANIZERS: TrueTrac organizers for Glass
Door Merchandisers come with a package of shelf retainer clips.
Install clip on the side to the rear of organizer (see illustration) to end
of organizer that rests against left or right outside wall.

With correct installation, the retainer clip should separate the rear of
the organizer from the rear interior wall of the cabinet.

NOTE:

No retainer clips needed on center organizers of a GDM-69.

Shelf Retaining Screw

Shelf

Clip

T-Series
& GDM-5
Airflow
Guard

Shelf

Pillaster
(I-beam)

Organizer

Shelf
Standards

Shelf

O-Ring

Glass Shelf

Retainer
Clip

Shelf Bracket

Shelf Retaining Screw

O-Ring

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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 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).

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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 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 SHELVES
(GDM-30 ONLY)

Tape door handles back to the cabi­net when installing shelves

1

Installing top tab of shelf clip

3

You may need to squeeze or twist
the bottom of the shelf clip to
install

2

Installing bottom of the shelf
clip

4

Shelf clip installation complete

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