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コントローラー DeZurik LA-6のPDF インストラクションをオンラインで閲覧またはダウンロードできます。DeZurik LA-6 9 ページ。 Manual & electric actuators

Adjusting Stops

The adjustable stops prevent the actuator from going beyond the open and closed positions of the

valve. The stops are preset and do not require further adjustment. If the actuator is disassembled,

however, the stops may require readjustment as described in the SETTING STOPS sections of this

manual.

1. Relieve the pressure and flow in the pipeline.

This actuator retains the stem packing in the valve. The actuator and

packing could be forcibly ejected and could cause personal injury if the

actuator mounting screws are removed with pressure in the valve. Relieve

pressure in the valve before removing the actuator.

2. Close the valve.

3. If the actuator is powered, disconnect and lock out the pneumatic, hydraulic, or electrical power

to prevent accidental operation of the actuator.

Moving parts from accidental operation of power actuator can cause

personal injury or equipment damage. Disconnect and lock out power to

actuator before servicing.

4. If the actuator has a pointer, remove the jam nut (B33), pointer (B29), flat washer (B91) and seal

(B28).

5. Remove the cover screws (B19), washers (B20) and cover (B4) from actuator.

6. Drive the pins (B14) out of the collars (B13). The pins can be driven straight through toward the

bottom of the housing.

7. Remove the inner (B25) and outer (B24) guide bars.

8. Unscrew the actuator input shaft (B10) from the collars (B13), the stop nuts (B27), and the yoke

nut (B7).

9. Remove the shaft from the actuator housing.

10. Remove all of the remaining shaft components from the housing.

11. From the valve shaft, remove the yoke (B3), yoke nut and link assembly. Keep the drive key

with the yoke.

12. Remove the actuator mounting screws (B41 or B42), and remove the actuator housing from the

valve.

13. From yoke nut and link assembly, remove retaining rings (B9), guide nuts (B8) and links (B6).

March 2009

LA-Series Manual & Electric Actuators

Page 7

DeZURIK

D10308