Installation, Operation and Maintenance Manual
VA-DC-000-1803 Rev. 2
July 2020
5
Section 1: Introduction
Introduction
1.9 Actuator Installation
1.9.1 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 the guess work out of the installation.
1.9.2 Actuators that 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 onto the valve. Refer to the
valve manufacturer's recommendations for specic 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 specications for total rotation.
1.9.3 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, and seals.
1.10 Actuator Start-Up
1.10.1 Prestart-up checks
1. Inspect to ensure the unit has been mounted onto valve properly. Gear
ange mounting bolts, stem key, setscrew(s) are installed and secured.
2. No tubing damaged or accessories dislodged during the shipping or
the installation.
3. Indicated position conrms valve position.
4. All switching valves in normal operating position as per
SCHEMATIC / INSTRUCTIONS.
1.10.2 Check Connections
1. Pneumatic / hydraulic components connected as per schematic enclosed
or in-service manual supplied.
2. Pneumatic supply connected to the identied ports.
3. Electrical connection terminals are secured.
4. Wiring as per enclosed diagram or service manual supplied.
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