42
S of the timer are closed and the extra care switch is set
to ON, line 1 is connected to one side of the cycle sig-
nal. The other side of the cycle signal is connected to
the signal switch. When the signal switch is set to ON
the contacts of the switch are closed connecting the
circuit to terminal H of the timer. A Pulsar cam, located
next to the cycle signal cam and rotating at 12 revolu-
tions per hour, allows contacts H to X to close for 5
s/-3 seconds.
Auto Dry Knits and Delicates Cycle:
The auto dry knits and delicates cycle operates the
same as the auto dry regular cycle except for the length
of time the timer motor can run (36 minutes) and the
extra care feature capability. When the extra care fea-
ture is selected, the dryer tumbles an extra 16.5 min-
utes at the end of the cycle without heat. During the
16.5 minutes, the end of cycle signal will sound 5 to 7
times.
Drive Motor and Heating Circuits:
The drive motor and heat circuits operate the same as in
the regular auto dry cycle.
Timed Dry Cycle
When the timed dry cycle is selected a drying time up
to 73.5 minutes may be set by turning the timer dial.
When the cycle is started, the timer motor runs con-
tinuously for the time set and at the end of the cycle
the end of cycle signal sounds one or two times.
Drive Motor and Heating Circuits:
The drive motor and heat circuits operate the same as in
the regular auto dry cycle.
Note:
In the auto regular cycle, the timer motor can
run for 51 minutes. The cycle time can be 51
min plus the time current flow is being shunted
by the electronic moisture sensor control.
The Heating Circuit:
Timer contacts B to A connect line 1 to terminal 1 of
the fabric selector switch. The fabric selector switch
allows the dryer to be set to operate at High tempera-
ture, Medium temperature, Low temperature or Air Fluff.
In the Air Fluff setting the drum turns but the heater
does not operate. Whenever the fabric selector switch
is set to either High, Medium or Low, contact 1 is closed
to contact 2 and line 1 is applied to the contacts of the
control thermostat. When the fabric switch is set to
either Medium or Low, power is applied to a small heater
in the control thermostat, and the control thermostat is
then cycled by a combination of heat from the thermo-
stat heater and heat in the drum. When the fabric se-
lector switch is set to Medium, contacts 3 to 5 of the
switch are closed connecting the series circuit formed
by a 2400 Ohm resister and the windings of the small
heater in the control thermostat to line 2. When the
fabric selector switch is set to Low, contacts 4 to 5 of
the switch are closed connecting the windings of the
small heater in the control thermostat to line 2. Since
more current flows through the thermostat heater in
the Low setting, the control thermostat cycles at a lower
drum temperature than Medium.
The control thermostat senses the temperature of the
air in the blower housing and controls the temperature
in the dryer by opening and closing the heater circuit.
When the temperature in the drum is below the cycle
temperature, the contacts are closed, connecting line
1 to the high limit thermostat. The high limit thermo-
stat is a safety device that prevents the dryer from over-
heating if the contacts of the control thermostat fail
closed. The contacts of the high limit thermostat are
normally closed and are set to open at a temperature
above the cycling temperature of the control thermo-
stat. From the output terminal of the high limit ther-
mostat, line 1 is connected to one side of the element.
The other side of the element is connected to line 2
through the contacts of the second centrifugal switch
in the drive motor. This switch prevents power from
being applied to the element if the motor is not run-
ning.
The Cycle Signal Circuit:
The cycle signal circuit is made up of the cycle signal
(buzzer) and signal switch which allows the customer
to active and deactivate the cycle signal feature. When
contacts B to C of the timer are closed or contacts B to
PULSAR CAM
DRIVE
CAM
Содержание 27" Dryers
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Страница 13: ...13 SAMPLE WIRING DIAGRAM FOR GAS MODELS WITH ELECTRONIC MOISTURE SENSOR CONTROLS ...
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