American Dryer Corp. AD-670 - Manual (Page 26)

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NOTE: Lint drawer must be ALL the way in place to activate the safety switch otherwise the
dryer will not start.
9. Check bolts, nuts, screws, terminals, and fittings for security.
10. Check to ensure air supply (80 PSI [5.51 bars]) is connected to the dryer.
I. SHUT DOWN INSTRUCTIONS
If the dryer is to be shut down (taken out of service) for a period of time, the following must be performed:
1. Discontinue power to the dryer either at the external disconnect switch or the circuit breaker.
2. Discontinue the heat supply:
a. GAS MODELS...discontinue the gas supply...
1) SHUT OFF external gas supply shutoff valve.
2) SHUT OFF internal gas supply shutoff valves located in the gas valve burner area.