Continental Girbau CG145-55 Installation Manual page 35

4. Steam Damper Air System Connections
The CG145-55 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 of the top console.
a. Air Requirements
COMPRESSED
AIR SUPPLY
Normal
Minimum Supply
Maximum Supply
Shaded areas are stated in metric equivalents
b. Air Connection
Air connection to system --- 1/8-inch F.P.T.
c. No air regulator or filtration is provided with the dryer. External regulation/filtration of 80 PSI
(5.51 bars) must be provided. It is suggested that a filter/regulator/gauge (F/R/G) 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 CG145-55 steam damper, as shown in the top illustration on page 32, 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 steam damper is in cool down mode as shown in
Diagram 2 on page 32.
AIR PRESSURE
80 PSI
70 PSI
90 PSI
31
5.51 bars
4.82 bars
6.21 bars