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FREEZERS DEFROST TIME CLOCK
OPERATION (Grasslin Timer)
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 evaporator 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.
REQUIRED TOOLS:
•
Phillips Screwdriver
•
1/4" Nut Driver or Socket
Locating The Defrost Timer:
Take off the timer box lid by removing four
(4) corner screws.
Single Door Models:
Defrost timer is located in top of the cabinet
in the timer box connected to the evaporator
housing.
Two Door Models:
Defrost timer is located in top of the cabinet
in timer box connected to the evaporator
housing.
Three Door Models:
Defrost timer is located on top and right-
hand side of the cabinet. The timer is in
the timer box connected to the side of the
condenser housing.
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 or temperature
terminated)
18
INSTALLATION / OPERATION INSTRUCTIONS
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.
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.
Always follow the manufacturer's
recommended settings when programming the
amount and duration of the defrost cycles.
Defrost Timer Image 2
............ www.truemfg.com ............
True Food Service Equipment, Inc.
WARNING:
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.
Defrost Timer Box Image 1
Outer most dial. White tabs represent 15
minutes of defrost time.
Time of day.
Inner most dial.
18
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