Specifications

OVERLOAD
PROTECTOR
The
overload
protector
prevents
the
compressor
from
burning
out its
electrical
windings
in
the
event
the
compressor
becomes
overheated
or
draws
too much
current. The
overload
trips,
opening
the
circuit
to the
compressor.
lf
it
does this
repeatedly,
the
compressor
is
said to
be
cycling
on the
overload.
Cycling
on
the
overload
may
be
caused
by:
1.
Insufficient
air circulation
around
the
compressor
and
condenser.
2. Pull-down
on the
overload,
caused
by
a large
quantity
of
warm
food
placed
in the
refrigerator.
3.
Compressor
stalling
due
to
lack
of
pressure
unloading.
4.
Low line
voltage.
5. Defective
starting
relay.
6. Defective
compressor
-
shorted
windings.
TESTING
THE
OVERLOAD
PROTECTOR
To
test
the
overload
protector,
remove
the
compressor
terminal
cover.
Examine
the
bottom
of the
overload
for
signs
of arcing,
lf
signs
of
arcing
are
not
present,
either
check
for
continuity
or
connect
a
jumper
wire
across
the
terminals.
lf
using
a
jumper
wire,
plug
in
the
line
cord
and
set
the temperature
control
to
a
cold
setting.
lf
the
compressor
starts,
the
overload
is
defective
and
must
be
replaced.
lf the
compressor
fails
to
start,
check
for
a
defective
starting
relay
or
compressor.
lf there
is
evidence
of
arcing,
do
not
connect
a
jumper
wire,
but
proceed
as
follows:
1.
Disconnect
unit from
power
source.
2. Remove
the
relay
and
overload
from
the
compressor.
3.
Connect
one
ohmmeter
probe
to
the
compressor
shell.
Make
sure
the
probe
makes
good
contact
with
bare
metal.
Connect
the
other
ohmmeter
probe
to
each
of the three
compressor
terminals,
one
at
a
time.
4.
lf the
meter
shows
no
continuity
to
ground,
install
the
relay
and
overload
protector
to the
compressor
terminals.
lf
the
meter
indicates
that
the
compressor
terminals
are
grounded,
replace
the
compressor.
5. Attach
a
jumper
wire
across
the
overload
terminals,
6.
Make
sure
the
jumper
wire
does
not
short
to
ground.
7,
Reconnect
the
unit
to
power
source.
lf
the
compressor
starts,
the
overload
protector
is
defective
and
must
be
replaced.
4-16