Emerson Bettis M Series, Инструкция по установке, эксплуатации и обслуживанию

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July 2019
Installation, Operation and Maintenance Manual
MAN-02-01-39-0704-EN Rev. 0
Introduction
1.3 Installation
The actuator can be mounted parallel or perpendicular to pipeline. The actuator can be
installed in any convenient position including vertical, horizontal or upside down.
A. Begin by bolting the mounting bracket to actuator only hand tight.
B. Install coupling on valve. Remove or disable any stops on the valve.
Use only the actuator position stops!
C. Install the actuator and bracket to valve being sure to leave all fastener
connections hand tight. If possible, stroke valve and actuator to a half open
position and physically shift actuator back and forth until coupling and all fasteners
are centered then tighten all bolts and nuts. This procedure will accurately align
valve stem to actuator output shaft and prolong valve stem seal life.
D. Cycle valve / actuator assembly and confirm smooth operation.
E. Adjust the actuator travel stops for perfect valve alignment in both open and
closed positions
.
NOTE:
If the valve disk is torque seated (E.G. Vanessa butterfly), close the valve against the
actuator stop, then unscrew the stop until turns freely, then screw the stop back in until it
stops, then turn the stop with a wrench one additional turn and lock into place.
F. Tubing Connections – some models utilize two pistons for added power. Spring
return (single acting) dual cylinders designs require one “jumper” to make the
supply port common on both pistons. Double acting (air to air) dual cylinder
designs require two “jumpers.” See Figure 1 for typical arrangement.
CAUTION
Use correct length mounting bolts! Mounting bolts used in actuator mounting pad may
interfere with the actuator rotary mechanism. Select bolts that will not extend more than
two threads above the back of the mounting pad.
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Section 1: Introduction