SMAR HART FY500, Установка, эксплуатация и обслуживание

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Section 1 - Installation
1.9
5. Attach the feedback arm to the end of the feedback shaft with M6x1 screw, M6 hex nuts, lock
washers, and flat washers. The markings on the feedback arm must be visible to the
operator/installer. Install the compensating spring on the feedback arm. See figure 1.11.
Figure 1.11
– Feedback arm assembly
WARNING
The compensating spring is used to hold the feedback pin securely against one side of
the feedback arm slot. This prevents excessive play in the linkage and limits the amount
of error introduced into the system through the linkage.
6. Refer to figure 1.12. Mount the positioner to the mounting bracket using two M8x1.25 screws, two
lock washers, and two flat washers.
Figure 1.12
– Positioner mounting bracket
7. Position the actuator to its mid-travel position using a handwheel or manual loading regulator.
8. Adjust the vertical position of the slotted bracket so that the feedback arm and oblong arm are
horizontally aligned. The feedback pin must be in the mark on the feedback arm that indicates the
valve stroke size (see marking on cast yoke). Tighten the M6x1 screws.
9. Before installing the mounting bracket to the actuator yoke, slip the round end of the feedback pin
into the feedback arm slot. Make sure the feedback pin engages the slot in the feedback arm.