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True Food Service Equipment, Inc.
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INSTALLATION / OPERATION INSTRUCTIONS
DEFROST TIME CLOCK OPERATION
Instructions for TAC-48, TAC-48GS, and TAC-72RC models.
RECOMMENDED DEFROST
SETTINGS:
True Manufacturing has factory set your
defrost time clock to a recommended time
and duration defrost scenario. 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.
NOTE:
Defrost timer will need to
be set at current time of day
before plugging unit into
power supply. The defrost
times have been set from
the factory. If you want to
change defrost times please
read through the defrost timer
instructions.
REQUIRED TOOLS:
• Phillips Screwdriver
• 1/4” Nut Driver or Socket
TAC Defrost Timer Location:
Defrost timer is located in a ballast box
behind the front louvered grill on the left
side of the unit. Four corner screws on
the front louvered grill will need to be
removed. The ballast box has two 1/4” hex
head screws that need to be removed to gain
access to the defrost control.
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:
(time initiated, time terminated)
Your True equipment contains a defrost
system that is time initiated and time
terminated. While True requires a
minimum 3 defrost periods not to exceed 30
minutes the procedure on this page should
be followed to customize your specifi c
needs.
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.
Defrost Timer Image 2
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, fl ip the white tabs out to set
the defrost time. To eliminate a defrost time
fl ip 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 Box Image 1
Outer most dial. White tabs represent 15
minutes of defrost time.
Time of day.
Inner most dial.