Emerson Fisher 3024C Gebruiksaanwijzing - Pagina 13

Blader online of download pdf Gebruiksaanwijzing voor {categorie_naam} Emerson Fisher 3024C. Emerson Fisher 3024C 20 pagina's. Diaphragm actuator

Instruction Manual

D103048X012

6. If the handwheel assembly was removed from the actuator yoke, position the assembly within the yoke so that the

eight mounting holes on the assembly align with those on the yoke and fit the cap‐screws (key 113) tightening to

28 NSm (20 lbfSft). Should difficulty be experienced fitting the levers (key 101) over (for ATC) or under (for ATO) the

actuator/valve stem connector, then partially stroke the actuator/valve by applying air pressure to the actuator

diaphragm.

Adjustable Travel Stops

The adjustable up travel stop (figures 11 and 12) limits the actuator stroke in the upward direction (limits retraction of

the actuator stem).

WARNING

When performing the following adjustment procedures, take care to avoid injury when positioning components.

For Sizes 30, 30E, 34, 34E, 40, and 40E

1. Relieve the air pressure on the diaphragm. Loosen the hex nut (key 25) and turn the adjuster (key 24) clockwise into

the diaphragm case to move the actuator stem downward or counter‐clockwise to allow the actuator stem to move

upward. Since the valve has push‐down‐to‐close action, full opening can be restricted. Check the actuator travel

and then tighten the hex nut (key 25).

Note

The travel stop hex nut (key 25) has an elastic stop on its underside to provide an air seal around the travel stop thread. It is

therefore important, before slackening this nut, to release any air pressure on the diaphragm.

For Sizes 45 and 45E

The adjustable up travel stop for the sizes 45 and 45E is shown in figure 12. For sizes 45 and 45E, the adjustable up

travel stop cannot be used with a side mounted handwheel.

1. Remove the screws (key 41) and nuts (key 42) which hold the protective covers (key 40) to the actuator yoke and

remove the covers.

2. Loosen the machined cheese head screw (key 37) and turn the adjustment nut (key 38) clockwise into the bushing

(key 36) to increase travel or counter‐clockwise to shorten the actuator travel.

3. Check the actuator travel and then tighten the machined cheese head screw (key 37).

4. Assemble the protective cover plates (key 40) to the actuator yoke with the screws (key 41) and nuts (key 42)

taking care to ensure that there is no gap between the cover plate and the diaphragm casing.

3024C Actuator

June 2023