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American Dryer Corp.
113159-2
b. Air Connection
Air connection to system --- 1/8” N.P.T.
c. No air regulation or filtration is provided with the dryer. External regulation and filtration of 80 psi
(5.51 bar) must be provided. It is suggested that a regulator or 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.
4. Steam Damper System Operation
The steam damper, as shown in the illustration below, 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 basket (tumbler), 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 basket
(tumbler) 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
Diagram 2.
5. Steam Damper Air Piston (flow control) Operation Adjustment
Although the damper operation was tested and adjusted prior to shipping at 80 psi (5.51 bar), steam damper
operation must be checked before the dryer is put into operation. Refer to page 28 for instructions to
check steam damper operation. If damper air adjustment is necessary, locate flow control valve and make
necessary adjustments as noted below.
MAN0595
MAN5223