Dexter Laundry T-350 Parts & Service Manual page 51

Air Flow Switch Operation And Adjustment
The air flow switch assembly is part of the ignition safety circuit and insures that the burners don't operate
unless there is air flow. When the drive motor and blower are running the flat
actuator is pulled in against the back of the dryer closing the switch. If this
doesn't happen ignition will not occur. The air flow 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 1.5 amp fuse protects the ignition transformer. To remove it just twist and pull it out.
Electronic Ignition Module
This machine uses an electronic spark ignition system to directly light the burners.
1. The electronic ignition module is located inside the electrical box. This is the metal box on the
back of the tumbler area directly to the left of the final drive pulley.
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 fits into the side of the module.
Spark Ignition Module Removal
Without mounting bracket
Remove all of the terminals of the wiring harness attached to the ignition module. Then, remove
the terminal of the hi-voltage cable attached to the ignition module. Lastly, remove the mounting
screws holding the ignition module in the control box. If there is no spark or intermittent spark,
check black hi-voltage lead wire for damage
NOTE:
Proper grounding of the ignition system (yellow wires) is very critical for proper ignition
sequence.
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Part # 8533-104-001 1/18