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1. Speed Adjustment
The speed of the tilting action can be regulated by adjusting the set of flow control valves located on the
pneumatic panel. Each set of cylinders, both front and rear, will have two (2) flow control valves. One valve
will be the extend (up) air line and the other valve will be retract (down) air line. The speed of the cylinder
is controlled by restricting the exhaust air flow from the cylinder. For example, if the front cylinders are
extending, compressed air flows unrestricted into the cylinder causing the piston to move. The air being
displaced (exhausted) from the opposite side of the cylinder can be restricted regulating the speed of
extension.
2.
Tilting Solenoid Valve
The dryer 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, air flows 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 air flow.
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