Samson 2780-1 Mounting And Operating Instructions
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Samson 2780-1 Mounting And Operating Instructions

Pneumatic actuators
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EB 5840 EN
Translation of original instructions
Type 2780‑1
Type 2780‑2
Type 2780-1 and Type 2780-2 Pneumatic Actuators
Actuator area: 120 cm²
Edition July 2019

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Summary of Contents for Samson 2780-1

  • Page 1 EB 5840 EN Translation of original instructions Type 2780‑1 Type 2780‑2 Type 2780-1 and Type 2780-2 Pneumatic Actuators Actuator area: 120 cm² Edition July 2019...
  • Page 2 Î For the safe and proper use of these instructions, read them carefully and keep them for later reference. Î If you have any questions about these instructions, contact SAMSON‘s After‑sales Service Department (aftersalesservice@samson.de). The mounting and operating instructions for the devices are included in the scope of delivery.

  • Page 3: Table Of Contents

    Contents Safety instructions and measures ..............1-1 Notes on possible severe personal injury ............1‑4 Notes on possible personal injury ..............1‑4 Notes on possible property damage .............1‑6 Markings on the device ................2-1 Actuator nameplate ..................2‑1 Design and principle of operation ...............3-1 Direction of action ..................3‑1 Signal pressure routing ................3‑1 Fail‑safe action ...................3‑3 3.3.1...
  • Page 4 10.1 Removing the actuator from the valve ............10‑2 10.2 Relieving the spring compression in the actuator ..........10‑2 Repairs ....................11-1 11.1 Returning devices to SAMSON ..............11‑1 Disposal ....................12-1 Appendix ....................13-1 13.1 Tightening torques, lubricants and tools ............13‑1 13.2 Spare parts ....................13‑1 13.3...

  • Page 5: Safety Instructions And Measures

    SAMSON. SAMSON does not assume any liability for damage resulting from the failure to use the de‑ vice for its intended purpose or for damage caused by external forces or any other external factors.
  • Page 6 Î Check with the plant operator for details on further protective equipment. Revisions and other modifications Revisions, conversions or other modifications of the product are not authorized by SAMSON. They are performed at the user's own risk and may lead to safety hazards, for example.
  • Page 7 Safety instructions and measures Referenced standards and regulations According to the ignition risk assessment performed in accordance with EN 13463‑1:2009, section 5.2, the non‑electrical actuators do not have their own potential ignition source even in the rare incident of an operating fault. As a result, they do not fall within the scope of Di‑ rective 2014/34/EU.

  • Page 8: Notes On Possible Severe Personal Injury

    Safety instructions and measures 1.1 Notes on possible severe personal injury DANGER Risk of bursting in the actuator. Actuators are pressurized. Improper opening can lead to actuator components burst‑ ing. Î Before starting any work on the actuator, depressurize all plant sections concerned and the actuator.
  • Page 9 Safety instructions and measures WARNING Risk of personal injury when the actuator vents. The actuator is operated with air. As a result, air is vented during operation. Î Install the control valve in such a way that vent holes are not located at eye level and the actuator does not vent at eye level in the work position Î...

  • Page 10: Notes On Possible Property Damage

    Risk of actuator damage due to the use of unsuitable tools. Certain tools are required to work on the actuator. Î Only use tools approved by SAMSON (u AB 0100). Risk of actuator damage due to the use of unsuitable lubricants. The lubricants to be used depend on the actuator material. Unsuitable lubricants may corrode and damage the surface.

  • Page 11: Markings On The Device

    10 Date of manufacture (month and year) SAMSON 2780 Pneumatic Actuator 120 cm² See technical data for ambient temperature Model Var.-ID Serial no. Air supply max. SAMSON AG D-60314 Frankfurt Made in Germany Fig. 2-1: Nameplate of Type 2780 Actuator EB 5840 EN...
  • Page 12 EB 5840 EN...

  • Page 13: Design And Principle Of Operation

    Design and principle of operation 3 Design and principle of oper- signal pressure connection on the top dia‑ phragm case. ation The actuator's direction of action can be re‑ The pneumatic actuators are used especially versed (see the 'Operation' section). for attachment to Type 3222 and Type 3213 Valves.
  • Page 14 Design and principle of operation A38 A39 Fig. 3-1: Type 2780‑1 Actuator stem extends Actuator stem retracts A25-29 Actuator stem Lower actuator section Actuator stem Diaphragm case Vent plug Coupling nut A25‑ Compression spring Metal plate Diaphragm plate Bottom diaphragm case Top diaphragm case Stop bushing Diaphragm Collar nut...

  • Page 15: Fail-Safe Action

    Note to the actuator diaphragm chamber. The listed fail‑safe actions apply to The connecting plate needs to be turned to SAMSON globe valves. align the correct symbol for the fail‑safe ac‑ tion with the marking. 3.3 Fail-safe action When the signal pressure is reduced or the control signal fails, the fail‑safe position of...

  • Page 16: Version With Direction Of Action "Actuator Stem Extends

    Design and principle of operation 3.3.1 Version with direction of Note action "actuator stem ex- Actuators with device index .01 are tends" equipped with new connecting plates. Old and new connecting plates are not inter‑ When the signal pressure is reduced or the changeable.
  • Page 17 Design and principle of operation Compliance The Type 2780‑1 and Type 2780‑2 Pneu‑ matic Actuators bear the EAC mark of con‑ formity. Dimensions Dimensions (see Fig. 3‑4) Weights Version Weight Type 2780‑1 2 kg Type 2780‑2 3.2 kg Ø168 Ø168 M32 x 1.5 M32 x 1.5 Fig. 3-4: Dimensional drawings EB 5840 EN...
  • Page 18 EB 5840 EN...

  • Page 19: Shipment And On-Site Transport

    2. Check the shipment for transportation actuator (including the packaging, if ap‑ damage. Report any damage to plicable). SAMSON and the forwarding agent (refer to delivery note). 3. Determine the weight and dimensions of the units to be lifted and transported in Our after‑sales service can provide more...

  • Page 20: Lifting The Actuator

    Î Avoid long storage times. − Make sure the slings can be removed Î Contact SAMSON in case of different from the actuator once it has been storage conditions or long storage peri‑ mounted on the valve.
  • Page 21 Shipment and on-site transport − Secure the actuator in the stored position against slipping or tipping over. − Do not damage the corrosion protection (paint, surface coatings). Repair any damage immediately. − Protect the actuator against moisture and dirt. Store it at a relative humidity of less than 75 %.
  • Page 22 EB 5840 EN...

  • Page 23: Mounting

    5.2 Mounting the actuator energy in the actuator (e.g. spring com‑ pression). See 'Relieving the spring com‑ SAMSON control valves are delivered ready pression in the actuator' in the 'Removal' for use. In special cases, the valve and actu‑ section.

  • Page 24: Mounting The Actuator Onto The Valve

    Risk of actuator damage due to the use of 2. Press the plug together with the plug stem unsuitable tools. firmly into the seat ring. Î Only use tools approved by SAMSON (u AB 0100). 3. Thread the nut (12) downward. 4. Remove the coupling nut (A23) at the actuator.

  • Page 25: Connecting The Air Supply

    Mounting 5.2.2 Connecting the air 2. Screw the vent plug into the connection on the bottom diaphragm case. supply The maximum permissible supply pressure is 4 bar in throttling service. How and with which accessories the air sup‑ ply is connected depends on the actuator model and its direction of action.
  • Page 26 Mounting Vent plug Guide nipple Compression spring Housing Plug Seat Actuator stem A23 Coupling nut Plug stem A40 Bottom diaphragm case Fig. 5-1: Type 2780‑1 Pneumatic Actuator on Type 3213 Valve EB 5840 EN...

  • Page 27: Operation

    WARNING WARNING Î Add any new values to the nameplate. If Crush hazard arising from the moving actu- necessary, contact SAMSON to obtain a ator stem. new nameplate. Î Do not insert hands or finger into the yoke while the air supply is connected to the actuator.

  • Page 28: Supply Pressure In Closed-Loop Operation

    Operation 6.1 Supply pressure in closed- loop operation The Type 2780 Pneumatic Actuator is de‑ signed for a maximum supply pressure of 4 bar. Only apply the signal pressure to the dia‑ phragm chamber of the actuator that does not contain any springs. See the 'Design and principle of operation' section.

  • Page 29: Malfunctions

    Malfunctions 7 Malfunctions 7.1 Troubleshooting Malfunction Possible reasons Recommended action Actuator stem does not Actuator is blocked. Check attachment. move on demand. Unblock the actuator. WARNING! A blocked actuator (e.g. due to seizing up after remaining in the same position for a long time) can suddenly start to move uncontrollably.

  • Page 30: Emergency Action

    Malfunctions 7.2 Emergency action The plant operator is responsible for emer‑ gency action to be taken in the plant. EB 5840 EN...

  • Page 31: Servicing And Conversion Work

    Servicing and conversion work 8 Servicing and conversion Î Only open the actuator following the in‑ structions in this document. See 'Reliev‑ work ing the spring compression in the actua‑ The work described in this section is only to tor' in the 'Removal' section. be performed by personnel qualified for the assignment accordingly.

  • Page 32: Periodic Testing

    Our after‑sales service can support you in drawing up an inspection and test plan for your plant. NOTICE Risk of actuator damage due to the use of unsuitable tools. Î Only use tools approved by SAMSON (u AB 0100). EB 5840 EN...

  • Page 33: Preparation For Servicing Or Conversion Work

    Servicing and conversion work 8.2 Preparation for servicing 8.3 Mounting the actuator on or conversion work the valve after servicing or conversion work 1. Lay out the necessary material and tools to have them ready for the intended 1. Mount the actuator and connect the air work.
  • Page 34 Servicing and conversion work phragm (A48) and metal plate (A38) in‑ 3. Remove the diaphragm plate (A39) to‑ to the bottom diaphragm case (A40). gether with the diaphragm (A48), metal plate (A38) and actuator stem (A1) out 8. Tighten the collar nut (A53). of the bottom diaphragm case (A40).

  • Page 35: Conversion Work

    Servicing and conversion work 10. Fasten the top and bottom diaphragm 4. Remove the diaphragm plate (A39) to‑ cases (A42, A40) together with the nuts gether with the diaphragm (A48) and and bolts. metal plate (A38) from the actuator stem (A1) and place them back on again 8.5 Conversion work turned over.

  • Page 36: Ordering Spare Parts And Operating Supplies

    (A1) and place them back on again Contact your nearest SAMSON subsidiary turned over. or the SAMSON After‑sales Service depart‑ 5. Tighten the collar nut (A53). ment for information on spare parts, lubri‑ 6. Apply a suitable sealant and lubricant to cants and tools.

  • Page 37: Decommissioning

    Decommissioning 9 Decommissioning WARNING WARNING The work described in this section is only to Risk of personal injury due to exhaust air be performed by personnel qualified for the being vented. assignment accordingly. The actuator is operated with air. As a result, air is vented during operation.
  • Page 38 EB 5840 EN...

  • Page 39: Removal

    Removal 10 Removal WARNING WARNING The work described in this section is only to Risk of personal injury due to exhaust air be performed by personnel qualified for the being vented. assignment accordingly. The actuator is operated with air. As a result, air is vented during operation.

  • Page 40: Removing The Actuator From The Valve

    Removal 10.1 Removing the actuator 10.2 Relieving the spring com- from the valve pression in the actuator See Fig. 5‑1 in the 'Mounting' section. 1. Unthread the short nuts and bolts on the diaphragm cases. 1. Removing actuators with "stem ex- tends"...

  • Page 41: Repairs

    Further information on returned devices and Î Contact SAMSON's After‑sales Service how they are handled can be found at for repair work. u www.samson.de > Service & Support > After Sales Service. 11.1 Returning devices to SAMSON Defective devices can be returned to SAMSON for repair.
  • Page 42 11-2 EB 5840 EN...

  • Page 43: Disposal

    Disposal 12 Disposal Î Observe local, national and internation‑ al refuse regulations. Î Do not dispose of components, lubricants and hazardous substances together with your household waste. EB 5840 EN 12-1...
  • Page 44 12-2 EB 5840 EN...

  • Page 45: Appendix

    Appendix 13 Appendix 13.1 Tightening torques, lubri- cants and tools u AB 0100 for tools, tightening torques and lubricants 13.2 Spare parts 1 Actuator stem 2 Lower actuator section 5 Actuator stem 8 Top diaphragm case 9 Bushing 10 Bushing 20 Vent plug 23 Coupling nut 25‑29 Compression spring 37 Threaded bushing...
  • Page 46 Type 2780‑1 Actuator 13-2 EB 5840 EN...
  • Page 47 25–29 Type 2780‑2 Actuator EB 5840 EN 13-3...

  • Page 48: After-Sales Service

    You can reach our After‑sales Service at aftersalesservice@samson.de. Addresses of SAMSON AG and its subsid- iaries The addresses of SAMSON AG, its subsid‑ iaries, representatives and service facilities worldwide can be found on our website (www.samson.de) or in all SAMSON prod‑...
  • Page 52 EB 5840 EN SAMSON AKTIENGESELLSCHAFT Weismüllerstraße 3 · 60314 Frankfurt am Main, Germany Phone: +49 69 4009-0 · Fax: +49 69 4009-1507 samson@samson.de · www.samson.de...

This manual is also suitable for:

2780-2

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