GLASS DOOR MERCHANDISERS
TEC_TM_105 REV. A 03/19/2021 Page 13 of 22
truemfg.com
Cabinet Operation
Startup
• The compressor is ready to operate when the unit is purchased.
All you need to do is plug in the cooler.
• Excessive tampering with the control could lead to service
difficulties. If replacing the temperature control is ever needed,
be sure to order the replacement from your TRUE dealer or
recommended service agent.
• Good air flow inside your TRUE unit is critical. Take care to
prevent product from pressing against the sides or back
wall and coming within 4" (101.6 mm) of the evaporator
housing. Refrigerated air off the evaporator coil must circulate
throughout the cabinet for even product temperatures.
NOTE: If the unit is disconnected or shut off, wait 5 minutes
before restarting.
RECOMMENDATION – Before loading product, run your TRUE
unit empty for 24 hours to verify proper operation. Remember,
our factory warranty DOES NOT cover product loss!
Temperature Control & Light Switch Location
Light switch location varies by GDM model. Most models have the
light switch located on the right side of the ceiling, next to the
temperature control.
The light symbol
shows the approximate location of the light
switch.
The electronic temperature control can act as a light switch.
To control the light, press the up arrow .
Electronic Temperature
Control with Digital Display
Behind the front bottom
louvered grill.
ECO
°C
°F
Mechanical or Electronic
Temperature Control
w/o Digital Display
Inside top right ceiling
or back wall.
C
O
L
D
E
R
Light Switch on
Glass Door Models
Inside top right ceiling.
FOR MORE INFORMATION
For more information regarding a cabinet's temperature control adjustment or general sequence of operation,
please see our Temperature Control Adjustment—Sequence of Operation Manual in our resource library at
https://www.truemfg.com/Service-Manuals/Sequence-of-Operation or follow the QR code.
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