Emerson Bettis RTS Service Manual - Page 13

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Service Manual

VCIOM-16909-EN Rev. 0

Section 4: Manual Actuator Operation

4.1

The manual operation is only possible if the actuator is delivered with the optional handwheel. This

option allows an adjustment of the valve in de-energized state.

CAUTION

•

NOTE:

The manual mode can be activated only when the drive is in the fail-safe position.

Figure 3

9. Handwheel

10. Coupling Rod

11. Padlock

Manual Actuator Operation Under Maintenance

Section 4: Manual Actuator Operation Under Maintenance

Under Maintenance

By activating the manual drive, the fail-safe function is disabled.

By activating the manual drive, the electrical function of the drive is disabled.

In normal operation, the handwheel (9) has no effect, it rotates idly by.

Manual handwheel operation

October 2021