American Dryer Corp. Gas DSI/HSI/Electric/Steam/Phase 7 with S.A.F.E. D-40 - Manual (Page 34)

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4. Steam Damper Air System Connections
This dryer is manufactured with a pneumatic (piston) damper system, which requires an external supply of
compressed air. The air connection is made to the steam damper solenoid valve, which is located at the
rear inner top area of the dryer just in front of the electric service relay box.
a. Air Requirements
There is no air requirement for dryers with the Electromechanical Steam Damper Option.
b. Air Connection
Air connection to system --- 1/8” N.P.T.
c. Air Regulation
No air regulator or filtration is provided with the dryer. External regulation/filtration of 80 PSI (5.51
bars) must be provided. It is suggested that a regulator/filter gauge arrangement be added to the
compressed air line just before the dryer connection. This is necessary to insure that correct and clean
air pressure is achieved.
COMPRESSED
AIR SUPPLY
AIR PRESSURE
Normal 80 PSI
5.51 bars
Minimum Supply 70 PSI
4.82 bars
Maximum Supply 90 PSI
6.21 bars
Shaded areas are stated in metric equivalents