American Dryer Corp. ADG-385 - Manual (Page 15)

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G. Tumbler Bearing and Pulley Arrangement
The tumbler bearing and the pulley arrangement is located
(viewing from the rear of the dryer) approximately at the upper
center of the dryer. The arrangement consists of a pulley,
bearing box, and bearing which serve to adjust, drive, and
support the tumbler. The bearing box has various nuts and bolts
that are made to adjust the basket vertically and horizontally.
I. Motor Assembly
The drive motor is located on the back, approximately
lower center of the dryer. It sits on an adjustable base
so that the motor can be easily adjusted to the left or
right, up or down. The blower end of the motor is
connected to the impellor, a backward curved paddle
wheel. The impellor provides air flow in the dryer. It
creates a vacuum which pulls the hot air from the burner
into the basket through the lint screen and out the
exhaust. The single phase machine will have plug type
motor as shown to the right.
H. Idler Bearing
(Viewing from the rear of the dryer)
The idler assembly is located approximately on the lower
left hand side of the dryer. The idler assembly consists
of one (1) compound pulley. The idler's main purpose
is to reduce the speed and increase the torque provided
to the tumbler bearing. Also, the idler assembly belt
tension can be adjusted.