American Dryer Corp. AD/ML-310 - Manual (Page 24)

24 American Dryer Corp. 113217 - 5
3. Optional Automatic (Piston Operated) Load/Unload Doors
If the dryer is equipped with the automatic door option then the loading doors are operated by two (2) pneumatic
pistons located above the load doors. On 2 door dryers, the unloading doors on the back of the dryer will also be
controlled by two (2) pistons, located above the unload doors.
The 24 volt solenoid valve controlling the door pistons are located on the pneumatic panel in the rear of the dryer’s
base. These solenoid valves are configured so that if power to the dryer is shut off, the door piston’s ports are bled
to the atmosphere so that the doors can be opened and closed by hand.
4. Steam Damper Air System Connections
The dryer is manufactured with a pneumatic (piston) damper system, which requires an external supply of compressed
air. The air connection is made at the left hand side on top of the dryer.
a. Air Requirements
Shaded areas are stated in metric equivalents
b. Air Connection
Air connection to system – 1/8” F.P.T.
Compressed Air Supply Air Pressure
Normal 80 psi 5.51 bar
Minimum Supply 70 psi 4.82 bar
Maximum Supply 90 psi 6.21 bar