B&C Technologies DI-225 Industrial - Manual (Page 22)

4. STEAM DAMPER SYSTEM OPERATION
The DI-225 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 (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.
5. STEAM DAMPER AIR CYLINDER (FLOW CONTROL) OPERATION ADJUSTMENT
Damper operation was tested and adjusted prior to shipping at 80 psi. If damper air adjustment
is necessary, locate flow control valve and make necessary adjustments.