Samson 3277 Mounting And Operating Instructions

Also see for 3271: Mounting and operating instructions Mounting and operating instructions Mounting and operating instructions Mounting and operating instructions Manual

EB 8310-5 EN 37Servicing3. Relieve the spring compression of actua-tors with preloaded springs (see sec-tion 9.3).4. Lift off the top diaphragm case (A1).5. Pull the diaphragm plate assembly con-sisting of the actuator stem (A7), dia-phragm plate (A5), and diaphragm (A4)out of the bottom diaphragm case (A2).6. Clamp the bottom section of the actuatorstem (A7) into a vise using protectivejaws. Make sure that the actuator stem isnot damaged.7. Unscrew and remove the nut (A33).8. Take the compressor (A35) and dia-phragm (A4) off the diaphragm plate(A5).9. Place the new diaphragm in the dia-phragm plate (A5). Make sure that theseal lip of the diaphragm (A4) is insertedcorrectly between compressor (A35) anddiaphragm plate (A5).10. Screw the compressor (A35) onto the ac-tuator stem (A7).11. Screw the nut (A33) against the com-pressor (A35). On tightening against theglued hexagon nut (with 175 cm²) or on-to the slotted nut (with 750 cm²), use asuitable tool to hold it stationary. Ob-serve tightening torques. Make sure thatthe diaphragm does not turn.12. Check whether the springs (A10) restcorrectly in the bottom diaphragm case(A2).13. Apply a suitable lubricant to the actuatorstem (A7).14. Place the diaphragm plate assembly con-sisting of the actuator stem (A7), dia-phragm plate (A5), and diaphragm (A4)into the bottom diaphragm case (A2).Make sure that the sealing elements arenot damaged.15. Place on the top diaphragm case (A1).Ensure that the compressed air connec-tions on the cases (A1, A2) are correctlyaligned with each other.16. If necessary, preload the springs (seesection 5.2).17. Fasten the top and bottom diaphragmcases (A1, A2) together using the nuts(A21) and bolts (A20). Tighten the nutsevenly. Observe tightening torques.18. Mount the actuator on the valve (see sec-tion 5.1).7.2 Replacing the actuatorstem sealsVersion with direction of action "actuatorstem extends" (FA)1. Lift the actuator off the valve. See sec-tion 9.2.2. Unscrew the nuts (A21) and bolts (A20)on the diaphragm case.3. Relieve the spring compression of actua-tors with preloaded springs (see sec-tion 9.3).4. Lift off the top diaphragm case (A1) andremove springs (A10).5. Pull the diaphragm plate assembly con-sisting of the actuator stem (A7), dia-