October 2015
Service Instructions
124842E Rev. C
6
Section 1: Introduction
Introduction
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The actuator speed of operation is determined by a number of factors including:
1.
Power supply line length
2.
Power supply line size
3.
Power supply line pressure
4.
Control valve and fitting orifice size
5.
Torque requirements of the valve
6.
Size of the actuator
7.
Setting of speed controls
8.
Hydraulic manual override (where available)
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Due to the interaction of these variables, it is difficult to specify a "normal"
operating time. Faster operating times may be obtained by using one or more of
the following:
1.
Larger supply lines
2.
Larger control valve
3.
Higher supply pressure*
4.
Quick exhaust valves
*Not to exceed maximum operating pressure of actuator or control components
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Slower operating times may be obtained using flow control valves to meter
the exhaust. Excessive exhaust flow metering may cause erratic operation.
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Actuator Operation
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Controlled Operation: Controlled operation is accomplished by pressurizing and/or
depressurizing the appropriate cylinder inlet(s) of a double-acting.
Do not exceed pressures indicated on actuator nameplate�
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Manual Operation: All pressure must be vented or equalized on both sides of the
pneumatic piston prior to manual operation.
