American Dryer Corp. Phase 5 Microprocessor AD-170 - Manual (Page 20)

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B. Ignition Controls
To Remove Spark Ignitor (see above burner illustration)
1. Discontinue power to dryer.
2. Disconnect HV connector and flame probe connection from ignitor.
3. Disassemble ignitor from burner by removing the two (2) self-tapping screws.
4. Reverse procedure for installing new ignitor/flame-probe.
NOTE: Before reestablishing power to dryer, visually check the following (see illustration):
A. The flame electrode, ignitor electrode, and ground rod are all on the same line axis.
B. There should be a 1/8" gap (+/- 1/32") between the ignitor electrode and ground rod.
C. Do not wrap the red HV wire and the flame electrode wire together. Improper operation
may result. They may run alongside each other.