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The dryer electronics can determine whether the drum has reached the correct position
by way of the optical sensor attached to the Sensor board, which uses the dimples on
the drum end outlet to determine the drum position.
How does AeroSmart™ close the drum door?
To close the drum door the drum rotates in the closing direction while the drum door is
held stationary by the grabber door. During this sequence the arm hinges are pressed
against the pusher ribs on the grabber door. As the drum rotates at approximately 5rpm
the drum door slides shut.
When the arm hinges reach the channel slots they drop down and latch in these slots,
due to the spring loading on the arm hinges (generated by the spring arm hinge).
The drum rotates through another few degrees at which point the grabber door wings
exit the bridge channels and the grabber door is raised by the actuator. At this point the
drum can speed up to the standard operating speed of 47rpm.
How does the drum know if something is in the way?
Inserted into the dryer is a mechanical interlock which prohibits the drum door from
latching closed if garments get caught in the drum opening. With the door unable to
close, the drum will stall, which will be sensed by the motor control module and
corrective action will occur.
If the motor stalls due to something getting in the way of the drum door a “Clothes
Jammed” fault will be internally flagged. The drum will reverse and open the door again.
It will try three times and if it is still unable to close the door, a User Warning will be
displayed to let the user know to push their clothes away from the opening.
Pusher Ribs on the grabber door push
against the arm hinges
Arm Hinge falls into a Slot to lock the
drum closed
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