True GDM-49-HC-TSL01 Installation Manual page 19

TRUE
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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 2
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.
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Outer most dial.
White tabs represent 15
minutes of defrost time.
Time of day.
Inner most dial.
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