American Dryer Corp. AD-400 User Manual
Page 42
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• Burner Fan/Motor
The combustion air is produced by a 6-inch diameter by 2-1/2-inch deep squirrel cage fan attached to a
3/4 hp, 3,600 rpm motor. The motor must spin counterclockwise as viewed from the rear of the motor.
Combustion Air Lint Filter
The combustion air lint filter is made of a fine mesh stainless steel screen which must be cleaned
regularly. This screen prevents any lint from entering the burner box.
Combustion Air Damper
To produce the required combustion airflow, this damper can be adjusted. Remove the lint screen to get
access to the damper. Moving the damper closer to the blower inlet opening will reduce the combustion
airflow, and moving it away from the blower inlet opening will increase the airflow. To measure the
combustion airflow, attach a manometer to the air pressure tap on the burner box. The air pressure
should measure 1.25 to 15 inches water column.
QAS PIPING
; COHBUSTON
' Aft SMTCH
IMET
MANUAL
SHUT OFF
VALVE
MAN0638
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