INSTALLATION PROCEDURES
3-21
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 Dryer – 100 lb. steam damper, 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.
Figure.3-16 Steam Damper System Operation
5. Steam Damper Air Piston (Flow Control) Operation Adjustment
Although the damper operation was tested and adjusted prior to shipping at 80 Psi steam
damper operation must be checked before the dryer is put into operation. damper air adjustment is
necessary, locate flow control valve and make necessary adjustments as noted below.
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