ADC AD-115ES Installation & Operator's Manual page 12

Steam Supply Requirements
Maximum Pressure
(Optional Steel Steam Coil)
Maximum Pressure
Minimum Pressure
Shutoff valves for each dryer should be installed in the supply
line, return line, and drip trap return line. This will allow the
dryer to be isolated from the steam supply if the dryer will be
serviced.
The supply and return lines should be insulated to save energy
and provide safety to maintenance personnel.
Pneumatic Steam Damper Arrangement
(Refer to figure)
A clean and dry compressed air supply (A) (5.5 bar ± 0.7 bar )
is required for dryers with a pneumatic piston (B) and damper
(C) arrangement.
The air connection is made to the steam damper solenoid valve
(D), which is located at the rear inner top area of the dryer just
in front of the rear electric service relay box (E).
Damper operation was calibrated prior to shipping. Airflow to
the piston (B) can be regulated by adjusting the flow control
valve (F). Turn the knob (G) clockwise to reduce airflow. Turn
the knob (G) counterclockwise to increase airflow.
1. Steam Coil
2. Vacuum Breaker
3. Solenoid Valve (for steam coil without damper)
4. Flexible Hose or Coupling
5. Riser
6. Strainer
7. Manual Shutoff Valve
12
1,200 kPa
862 kPa
689 kPa
8. Drop
9. Dirt Leg
10. Drip Trap
11. Check Valve
12. Inverted Bucket Steam Trap
13. Return Main
14. Supply Main
American Dryer Corp. 113579 - 1