Tension Arm Support Assembly Adjustment
The tension arm support assembly may be adjusted for alignment of the intermediate pulley and also
to align the belts. The three outer nuts allow the alignment of the pin to be adjusted by pivoting the
assembly on the center bolt. The center bolt can be screwed in to allow bringing the complete assembly
farther back if necessary for belt alignment.
Motor Blower Assembly Removal And Installation
1. Remove the motor wiring cover and take the 3 motor wires o.
2. Remove the motor wiring cover and take the 3 motor wires o.
3. Remove the 9 nuts and lock washers that retain the blower cover and set assembly out of dryer.
4. The blower is held in place with 2 square headed set screws. Upon reassembly, one blower set
screw should t in the counter sink in the shaft and the other set screw should go against the at
side of the shaft. Use red Loctite on the set screws and torque to 165 in./lbs.
5. The motor is mounted with 4 bolts to the blower cover.
Air Flow Switch Operation And Adjustment
The air ow switch assembly is part of the ignition safety circuit and insures
that the burners don’t operate unless there is air ow. When the drive motor
and blower are running the at actuator is pulled in against the back of the
dryer closing the switch. If this doesn’t happen ignition will not occur. The air
ow switch assembly is mounted by two screws through the bracket. It can be
adjusted by loosening these mounting screws and moving the switch forward
or backward.
Ignition Transformer Fuse
The 1 1/2 amp fuse protects the ignition transformer. To remove it just twist and pull it out.
Ignition Control Transformer
When heat is called for, the ignition control transformer steps 120VAC down to 24VAC to power the ignition
control.
Electronic Ignition Module
This machine uses an electronic spark ignition system to directly light the burners in each tumbler.
1. The electronic ignition module for each tumbler is located inside the electrical box. This is the
metal box on the back of each tumbler area directly to the right of the nal drive pulleys.
2. The red wire from the transformer traveling thru the 1.5 amp fuse and into the module supplies
the 24VAC required to operate the entire direct ignition system.
3. The black colored hi-voltage wire (spark plug type) plugs onto the post connector on the module,
and the multi-wire plug ts into the side of the module.
Spark Ignition Module Removal
1. The spark electrode and sensing electrodes are located directly over the rear burner inside the
burner housing.
2. The electrode with the black hi-voltage wire conducts the spark to the center grounding probe,
directly over the burner.
3. The electrode with the black sensing wire detects ignition and monitors ame by signaling the
module.
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Part # 8533-090-001 7/21
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