Restrictions; Air Leaks; Short Unrestricted Vents; Electrical Operation (Electric Dryers Models) - Electrolux 6000 Service Manual

Restrictions:

Restrictions can occur any place in the airflow system,
but the most common are:
1. Installing the dryer in a small inclosed area; such
as a closet without a louvered door that reduces
the intake air.
2. Fan problems caused by either a slow running motor,
a broken or deformed fan blade or a deformed fan
housing.
3. A lint restriction in the lint screen area. Operator
may not be cleaning the lint screen before using.
4. A restriction in the exhaust system in the house
caused by the design of the vent, such as; the
diameter of the vent pipe being too small, too long,
too many right angles, or a collapsed or lint restricted
vent pipe.
Note: Problems caused by the vent pipe in the house
are not covered under the product warranty.

Air leaks:

Two types of air leaks may occur:
1. Air being drawn in around the door opening, between
the drum and the front panel, or around the foam seal
between the front duct and the blower housing,
replaces some of the air being drawn through the drum
and lowers the efficiency of the dryer.
Note: An air leak that occurs around the door
opening or between the drum and the front
panel usually will cause lint to build up on
the inner panel of the door.
2. Air being pushed out around the blower housing
or vent pipe inside the dryer, allows some of the
moisture that has been removed from the clothes
to be recirculated.

Short unrestricted vents:

The venting system in the dryer is designed to operate
under some back pressure. This back pressure is
needed to slow the airflow and allow the air to be heated
before it passes through the clothes.
Note: With short direct vent runs; such as you have
when the dryer is installed against an outside
wall, use a 2 1/2" vent cap rather than a 4"
vent cap.

Electrical Operation (Electric Dryers Models)

Note: Always refer to the wiring diagram or schematic
with the product.
When the dryer is connected to electrical power, line 1
is connected to one side of the thermal limiter and the
COM terminal of the heater relay RL 2 that is mounted
on the electronic control board. Power is applied to the
control board through thermal limiter to pin 1 of the eight
pin plug. The electronic control board controls the
operating temperature of the dryer and the length of the
cycle by either sensing the amount of moisture in the
clothes or a fixed amount of time when timed dry is used.
Note: For information on programming the
electronic control and the cycles refer to
section A.

Electronic Control Board Circuits:

Line 1 is applied to the control board at pin 1 of the eight
pin plug and neutral on pin 2 of the eight pin plug. The
control board receives inputs from the selector knob and
push buttons which programs the control, the contact
sensors that senses the amount of moisture in the
clothes and the control thermistor which senses the
temperature in the dryer. The control board uses these
inputs to signal the interface board, control the drive motor
circuit by opening and closing the contacts of relay RL 1
and the heater circuit by opening and closing the
contracts of relay RL 2.
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