Samson 3277 Mounting And Operating Instructions
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Samson 3277 Mounting And Operating Instructions

Pneumatic actuator
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Pneumatic Actuator
Type 3277
Fig. 1 ⋅ Type 3277 Actuator
Fig. 2 ⋅ Type 3277-5 Actuator
Mounting and
Operating Instructions
EB 8311 EN
Edition April 2002

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Summary of Contents for Samson 3277

  • Page 1 Pneumatic Actuator Type 3277 Fig. 1 ⋅ Type 3277 Actuator Fig. 2 ⋅ Type 3277-5 Actuator Mounting and Operating Instructions EB 8311 EN Edition April 2002...

  • Page 2: Design And Principle Of Operation

    1 Design and principle of operation locking mechanism (lock nut) has been Type 3277 Pneumatic Actuators with an ef- disengaged. In addition, the actuator can fective diaphragm area of 240, 350 or...
  • Page 3 = 209 mm Yoke with lower 700 cm = 246 mm diaphragm case Loading pressure connection Stem seal 12.1 Dry bearing Wiper Fig. 3 ⋅ Type 3277 Actuator with 240, 350 and 700 cm effective diaphragm areas EB 8311 EN...
  • Page 4 (14.3) for the appropriate fail- Type 3277 Actuator (Fig. 3) safe action "actuator stem extends" or In the Type 3277 Actuator with the fail-safe "actuator stem retracts" with the mark action "actuator stem extends", the loading (14.4). See Fig. 4, bottom right.
  • Page 5 14.7 Gasket with filter 14.4 14.8 Loading pressure 14.3 connection 14.4 Actuator stem retracts Actuator stem Actuator stem extends left attachment right attachment extends retracts left attachment right attachment Fig. 4 ⋅ Type 3277-5 Actuator (120 cm EB 8311 EN...

  • Page 6: Operation

    "actuator stem retracts" It is important for a troublefree operation of the actuator that the vent plug (3) is not Note! blocked in the Type 3277 Actuator. The operating direction of actuators with Make sure in versions with a handwheel 700 cm...
  • Page 7 (1.1) stationary with a suitable tool or 8. Screw diaphragm cases back together. clamp the actuator stem. Remove vent plug (3) on Type 3277 Ac- Caution: Proceed carefully to avoid da- tuator. maging the seals of the actuator stem.

  • Page 8: Actuator With Handwheel

    Reversing the operating direction (fail-safe action) Proceed in the same manner for the Type Reversing the fail-safe action "actuator 3277-5 Actuator intended for the micro- stem extends" to "actuator stem retracts" valve, but additionally attach the bushing Proceed as described in section 2.1.1.
  • Page 9 Bottom diaphragm case Loading pressure connection Stem seal 12.1 Dry bearing Wiper Handwheel 12.1 Lock nut Flange part Coupling Clamping sleeve Ring Coupling nut Threaded pin Spindle with nut Fig. 5 ⋅ Type 3277 Actuator with additional handwheel EB 8311 EN...

  • Page 10: Adjusting The Travel Stop

    Adjusting the travel stop 2.2 Adjusting the travel stop (with Type 3277 in special version only) The travel stop can be adjusted upwards or downwards to 50% of the travel. Downward travel stop (actuator stem extends) 1. Undo the lock nut (34) and unscrew the cap (33).

  • Page 11: Customer Inquiries

    Refer to the Data Sheet T 8311 EN for diaphragm plate (7) (not necessary with dimensions and weights of the actuator ver- Type 3277-5 as the diaphragm is held sions. in place by the metal plate (7.1)). 3. Stretch the new diaphragm onto the dia- phragm plate.
  • Page 12 SAMSON AG ⋅ MESS- UND REGELTECHNIK Weismüllerstraße 3 ⋅ 60314 Frankfurt am Main ⋅ Germany Phone: +49 69 4009-0 ⋅ Fax: +49 69 4009-1507 EB 8311 EN Internet: http://www.samson.de...

This manual is also suitable for:

3277-5

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