Specifications

DEFROST
TIMER
Top Mount
Models
The freezer
evaporator
defrosting system
is
actuated
by an electric
timer.
The
timer
is
fastened
under the
cabinet, behind the
grille.
The
timer
control
shaft
is
designed
for
screwdriver
adjustment.
When
manually
setting
the timer
to initiate
defrosting,
turn
the
control
shaft
clockwise
until
you
establish
the
approximate
location
of the
defrost
cycle.
Then turn
the
shaft
slowly
and
stop immediately
when
the
first
click
is
heard.
The
schematic
illustrates
the
timer
circuits
in
sequence.
1st
Click
-
The
timer
switches
off the
compressor
and treezer
fan
circuit for
approximately
21 minutes
with the
6 hour
timer,
and
23
minutes
with the
8 hour
timer.
At the
same
time,
it
energizes
the
radiant
heater.
Once the
temperature
of
the
def rost
termination
thermostat
reaches
the
cut-out
point,
the termination
thermostat
will
open the
circuit
to the
radiant
heater.
However,
the
compressor
circuit remains
open for
the
duration
of the
defrost
interval,
Again,
that is
dependent
on whether
it is
a
6 or
8 hour
timer,
2nd
Click
-
The
timer
switches
off
the
defrost
circuit
and
starts
the
compressor,
lreezer
fan,
and the
condenser
fan
motor.
The
compressor
and fan
motors
are
now
governed
by
the
temperature
control
for
a
period
of
approximately
six or
eight
hours
of compressor
run time, (depending
on the
model)
after which
a new
defrost
cycle
begins.
DEFROST
THERMOSTAT
TO
COMPRESSOR
FIBST
CLICK.DEFROST
OPERATION
4-25