19
Models 60 & 62
Troubleshooting
Electrical Troubleshooting
The following information provides a sequential list of
electrical components that L-1 power travels through
to initiate various operations.
Wash mode of operation: When the coil of the beater
motor contactor is supplied with L-1 power, the
contactor closes and the beater motor runs.
The path L-1 power travels to reach the coil of the
contactor is listed as:
Beater motor overload switch, compressor high
pressure switch and control (rocker) switch.
Auto mode of operation: When the control (rocker)
switch is placed into the AUTO position, the draw lever
must be raised to activate the refrigeration system.
The sequence of events are as follows:
When the control (rocker) switch is in AUTO and the
draw lever is raised, the coil of the compressor time
delay relay is energized. The path that L-1 power
travels to reach the coil of the compressor time delay
relay is as follows: Beater motor overload switch,
compressor high pressure switch, control (rocker)
switch (terminals 2 & 1), draw switch, control (rocker)
switch (terminals 5 & 4) and torque switch.
With the coil of the time delay relay energized, the
switch points of the relay close and energize the coil of
the compressor contactor. The path that L-1 power
travels to reach the coil of the compressor contactor is
as follows:
Beater motor overload switch, compressor high
pressure switch, control (rocker) switch (terminals 2 &
1), draw switch, control (rocker) switch (terminals 5 &
4), time delay relay (terminals 8 & 5), and the mix level
control switch (LC1).
Once the compressor contactor has closed to operate
the compressor, the draw lever can be released and
the coil of the time delay relay will remain energized to
“latch” the circuitry into “AUTO” operation. The path
L-1 travels to the coil of the time delay relay is as
follows:
Beater motor overload switch, compressor high
pressure switch, control (rocker) switch (terminals 2 &
1), compressor contactor auxiliary switch, and the
torque switch.
With the draw lever released and the time delay relay
coil “latched” in operation, the coil of the compressor
contactor is also “latched” into operation. The path L-1
power travels to reach the coil of the compressor
contactor is as follows:
Beater motor overload switch, compressor high
pressure switch, control (rocker) switch (terminals 2 &
1), compressor contactor auxiliary switch, time delay
relay terminals ( 8 & 5) and the mix level control switch
(LC1).
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