SMAR HART FY500, Installation Operation & Maintenance

Page: 9 / 64

Section 1 - Installation
1.3
Figure 1.2
– Quarter turn actuator sizes
WARNING
In case of a pneumatic or electrical failure, it is important to know the behavior of the
actuator. Before mounting the positioner on an actuator, the failsafe position and
direction of rotation of the actuator drive shaft should be verified.
WARNING
Before starting any assembly or disassembly of the actuator/positioner set, the electrical
supply and pneumatic supply must be removed. The actuator line must also be emptied.
Stay away from moving parts to avoid serious injury.
1. Visually check to make sure the valve is on the fail-safe position. The normal performance of the
quarter turn rotary actuators is clockwise-to-close and counterclockwise-to-open. However, this may
be inverted under request.
2. Position the rotary actuator to its approximately mid-travel position, using a handwheel or manual
loading regulator.
3. The rotary mounting bracket consists of three parts, which can be adjusted to the actuator by
different arrangements. Determine the configuration of the rotary bracket, according to dimensions a
specific actuator size, using four M5 screws, four lock washers, and four flat washers. as shown in
figure 1.3.
TIP
For ease of assembly, attach the L-shaped parts of the mounting bracket only after
installing/screwing the rotary adapter.