October 2015
Service Instructions
VA001-196-30 Rev. 1
4
Section 1: Introduction
Introduction
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Actuator Storage
For applications where the actuator is not put into immediate service, it's recommended
that the actuator be cycled with regulated clean/dry pneumatic pressure at least once per
month. Indoor storage, if available, is recommended for all actuators. Care should be taken
to plug all open ports on actuator and controls to keep out foreign particles and moisture.
Also, actuators should not be stored in an atmosphere harmful to resilient seals. For
extended storage, contact the manufacturer's representative.
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Actuator Installation
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Since there are many valve and actuator combinations, it is not practical to include
detailed instructions for each type. Mountings are designed to be as simple as
possible to keep guess work out of installation.
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Actuators are shipped from the factory with the travel stops adjusted for
approximately ninety degree rotation. Generally it is necessary to make slight
travel stop adjustments once the actuator is installed on the valve. Refer to the
valve manufacturer's recommendations for specific requirements. When the valve
has internal stops, the actuator should be adjusted at the same points.
NOTE:
The actual "stopping" should be done by the actuator. If the valve does not have internal
stops, adjust the actuator to the full open position. Using this as a reference point, rotate
the valve closed and adjust to the valve manufacturer's specifications for total rotation.
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Good instrument practices are also recommended. Clean/dry regulated
pneumatic pressure is essential for long service life and satisfactory operation.
It should be noted that new pneumatic lines often have scale and other debris in
them and these lines should be purged of all foreign material.
NOTE:
Scale and debris can damage control valves, solenoids, seals, etc.
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Actuator Start-up
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Prestart-up checks
1.
Unit has been mounted on valve properly. Gear flange mounting bolts,
stem key, setscrew(s) installed and secured.
2.
No tubing damaged or accessories dislodged during shipping or
installation.
3.
Indicated position confirms valve position.
4.
All switching valves in normal operating position as per Schematic/
Instructions.
