Baker Hughes Masoneilan SVI II AP, Quick Start Manual

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. Masoneilan SVI II AP Digital Positioner Quick Start Guide
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2. Mount the SVI II AP reciprocating mounting bracket to the actuator using two (2)
5 ⁄ 16 - 18 UNC cap screws.The mounting location of the bracket depends on the
size and stroke of the actuator. Refer to Figure 15 and Figure 4 on page 33.
Figure 15 Reciprocating Valve Mounting Bracket
3. Select mounting hole A, B, C or D for the stroke of the valve. For example, hole B is
shown in Figure 17 on page 32 for a size 10 actuator with 1.0" stroke. Unless
otherwise specified, the SVI II AP mounting assumes that the actuator is in the
normal upright position. The mounting hole in the slotted opening of the mounting
bracket must be left when facing the actuator, with the actuator in the upright
position.
4. Move the valve to its closed position. For air to extend, this requires using air
pressure in the actuator to fully stroke the actuator. For air to retract, actuators
vent the actuator of air pressure.
5. Thread the take-off rod to the actuator stem connector. Refer to Figure 16 on
page 32. Ensure that the travel pointer located on the coupling is correctly
positioned.
6. Attach the right hand threaded rod end to the SVI II AP lever using a 1 ⁄ 4 - 20 x 1"
cap screw and nut as shown. The lever hole position to be used depends upon the
specific valve stroke. Refer to Figure 17 on page
32 and the Reciprocating Valve
Linkage Selection, Table 4 on page 33.
7. Thread the right hand lock nut and turnbuckle onto the right hand rod end
approximately two turns. Turnbuckle length is a function of actuator size. (Refer to
Table
4 on page 33.)
8. Secure the magnet housing assembly, including the lever and right hand rod end,
to the bracket using four M5 X 10 mm flat head screws.
9. Attach the left hand threaded rod end to the take-off rod with 1 ⁄ 4 - 20 UNC nut and
thread the left hand lock nut onto the rod end.