American Dryer Corp. AD-115ES - Manual (Page 43)

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b. Air Connection
Air connection to system --- 1/8-inch N.P.T.
c. No air regulation or filtration is provided with the dryer. External regulation and filtration of 80 PSI (552
kPa) must be provided. It is suggested that a regulator and 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.
5. Steam Damper System Operation
The ADS-115ES steam damper, as shown in the top illustration, Diagram 1 (Heating Mode) on page 40,
allows the coil to stay constantly charged eliminating repeated expansion and contraction. When the damper
is opened, the air immediately passes through the already hot coil, providing instant heat to start the drying
process. When the damper is closed, ambient air is drawn directly into the tumbler (basket ), allowing a rapid
cool down.
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 tumbler
(basket) without passing through the coils.
NOTE: With the dryer off or with no air supply, the damper is in the Cool Down Mode as shown in
the top illustration, Diagram 2 on page 40.
4. Steam Damper Air System Connections
The ADS-115ES 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 above the electric service relay box.
a. Air Requirements
C
OMPRESSED
A
IR
S
UPPLY
A
IR
P
RESSURE
Normal 80 psi 552 kPa
Minimum Supply 70 psi 483 kPa
Maximum Supply 90 psi 621 kPa
Shaded areas are stated in metric equivalents.