American Dryer Corp. Super AD-30 - Manual (Page 35)

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NOTE: With the dryer off or with no air supply, the steam damper is in cool down mode as shown in
Diagram 2.
a. Steam Damper Air Piston (Flow Control) Operation Adjustment
Damper operation was tested and adjusted prior to shipping at 80 psi. If damper air adjustment is
necessary, locate the flow control valve and make the necessary adjustments as noted below.
Diagram 1 shows the damper in the heating (open) mode, allowing heat into the basket (tumbler).
Diagram 2 shows the damper in the cool down (closed) mode, pulling ambient air directly into the basket
(tumbler) without passing through the coils.