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1. Tilting Solenoid Valve
The AD-200 uses a 3-position/4-way/5-port, spring centering double solenoid valve. With no power applied
to either solenoid, the valve is in a spring centered blocked post state. In this mode, the dryers tilting pistons
will remain in their present state, not being able to exhaust air or receive air. When the left solenoid is
energized with 24 VAC, the pilot air pushes the shuttle to the right enabling air to flow into the #2 port and
exhausts #4 port. On 2-Way Tilt models, this is dependent on a supply of external pilot air from the #4 port
of the opposite solenoid valve. When the right solenoid of the valve is energized, airflows through the #4
port and the #2 port exhausts the pilot air, the right side of the valve is always internal pilot.
The tilting solenoid valve has two (2) mufflers. The air is exhausted through these mufflers thereby quieting
the airflow.
2. Tilting Pistons
The tilting piston is a double acting cylinder that has a 5-inch (12.7 cm) bore and an 11-inch (27.94 cm)
stroke. When air is applied to the bottom port of the cylinder, the piston begins to extend and air is exhausted
through the top port. Then, if air is applied to the top port, the bottom port will exhaust the air which will
cause the piston to retract.
3. Tilting System Component Replacement
CAUTION: NEVER SERVICE PNEUMATIC COMPONENTS WITH COMPRESSED AIR
CONNECTED. SERIOUS INJURY MAY RESULT.