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5. 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 tumbler, allowing a rapid cool down.
Diagram 1 – shows the damper in the heating (open) mode, allowing heat into the tumbler.
Diagram 2 – shows the damper in the cool down (closed) mode, pulling ambient air directly into the tumbler
without passing through the coils.
NOTE: With the dryer off or with no air supply, the steam damper is in the cool down mode as shown
in Diagram 2.
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