Samson 3278 Translation Of Original Instructions
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Samson 3278 Translation Of Original Instructions

Samson 3278 Translation Of Original Instructions

Pneumatic rotary actuator
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EB 8321 EN
Translation of original instructions
Type 3278 Pneumatic Rotary Actuator
Type 3278 Pneumatic Rotary Actuator
Actuator area: 160 and 320 cm²
Edition January 2021

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  • Page 1 EB 8321 EN Translation of original instructions Type 3278 Pneumatic Rotary Actuator Type 3278 Pneumatic Rotary Actuator Actuator area: 160 and 320 cm² Edition January 2021...
  • Page 2 Note on these mounting and operating instructions These mounting and operating instructions assist you in mounting and operating the device safely. The instructions are binding for handling SAMSON devices. The images shown in these instructions are for illustration purposes only. The actual product may vary.

  • Page 3: Table Of Contents

    Contents Safety instructions and measures ..............1-1 Notes on possible severe personal injury ............1-3 Notes on possible personal injury ..............1-4 Notes on possible property damage .............1-5 Warnings on the device ................1-5 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 ...................3-1...
  • Page 4 Decommissioning ..................9-1 Removal ....................10-1 10.1 Removing the actuator from the valve ............10-1 10.2 Relieving the spring compression in the actuator ..........10-1 Repairs ....................11-1 11.1 Returning devices to SAMSON ..............11-1 Disposal ....................12-1 Annex......................13-1 13.1 Tightening torques ..................13-1 13.2 Spare parts ....................13-1 13.3 After-sales service ..................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. Fur- thermore, the product may no longer meet the requirements for its intended use.

  • Page 7: Notes On Possible Severe Personal Injury

    Safety instructions and measures Referenced standards, directives 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 Personal Injury

    Safety instructions and measures 1.2 Notes on possible personal injury WARNING Risk of personal injury due to preloaded springs. Actuators with preloaded springs are under tension. Î Only open the actuator housing to safely relieve the energy of the spring compres- sion following the instructions in this document.

  • Page 9: 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. 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 surfaces.
  • Page 10 EB 8321 EN...

  • Page 11: Markings On The Device

    Max. Luftdruck Type Max. Air pressure Federbereich Spring Range Sicherheitsstellung wird vom Anbau des Antriebs an das Ventil bestimmt! Fail-safe position is determined by the attachment of the actuator to the valve! Fig. 2-1: Nameplate of Type 3278 Actuator EB 8321 EN...
  • Page 12 EB 8321 EN...

  • Page 13: Design And Principle Of Operation

    Design and principle of operation 3 Design and principle of operation 3.2 Signal pressure routing The single-acting Type 3278 Rotary Actuator with spring return mechanism is mounted on When the signal pressure fails, the mounted butterfly valves and other final control ele- valve is moved to its fail-safe position.
  • Page 14 Actuator shaft Diaphragm plate Diaphragm Housing 8, 9, 10 Springs Vent plug 8 Spring number 1 Handwheel 9 Spring number 2 Screw 10 Spring number 3 Stop bolts Signal pressure connection Screw Fig. 3-1: Functional diagram of Type 3278 EB 8321 EN...

  • Page 15: Versions

    Positioner mounting kit A mounting kit with a bracket, intermediate piece and screws is required to attach a non-SAMSON positioner (according to VDI/ VDE 3845). The positioner is mounted on the side opposite to the flange connection. Actuator area Material number of mounting kit 160 cm²...
  • Page 16 Design and principle of operation Table 3-1: Technical data for Type 3278 Permissible signal pressure 6 bar Actuator area 160 cm² · 320 cm² Opening angle 90° No. of springs Signal pressure ranges 7 (through different spring combinations) Permissible temperatures –35 to +90 °C in continuous operation...
  • Page 17 Design and principle of operation Dimen- ØD G¼ sional drawings Flange 1 Flange 2 Stop bolts to limit opening angle EB 8321 EN...
  • Page 18 EB 8321 EN...

  • Page 19: Shipment And On-Site Transport

    Risk of lifting equipment tipping over and damage. Report any damage to risk of damage to lifting accessories due to SAMSON and the forwarding agent exceeding the rated lifting capacity. (refer to delivery note). Î Only use approved lifting equipment and 3.

  • Page 20: Transporting The Actuator

    Shipment and on-site transport Transport instructions WARNING − Protect the actuator against external in- Risk of injury due to incorrect lifting without fluences (e.g. impact). the use of lifting equipment. − Do not damage the corrosion protection Lifting the actuator without the use of lifting (paint, surface coatings).

  • Page 21: Storing The Actuator

    Special storage instructions for elastomers Î Avoid long storage times. Elastomer, e.g. actuator diaphragm Î Contact SAMSON in case of different − To keep elastomers in shape and to pre- storage conditions or longer storage vent cracking, do not bend them or hang times.
  • Page 22 EB 8321 EN...

  • Page 23: Installation

    Risk of actuator damage due to the use of 5.2 Mounting the device unsuitable tools. Î Only use tools approved by SAMSON. Depending on the version, SAMSON control valves are either delivered with the actuator already mounted on the valve or the valve and actuator are delivered separately.

  • Page 24: Mounting The Actuator Onto The Valve

    (11) which corre- without the need for additional hook-up. sponds to the upper bench range value. In combination with SAMSON Type 3766 Turn the other stop bolt (42.1) until the and Type 3767 Positioners, a ready-made butterfly valve stops at an opening angle pipe connection with a connecting plate is of 70°.
  • Page 25 Installation b) Fail-open valve 1. Loosen stop bolts (42.1 and 42.2). 2. Apply a signal pressure to the signal pressure connection (11) which corre- sponds to the upper bench range value (see nameplate). 3. Adjust the stop bolt for closed position (42.1) at the point where the butterfly valve is completely closed.
  • Page 26 EB 8321 EN...

  • Page 27: Operation

    Î Add any new values to the nameplate. If necessary, contact SAMSON to obtain a new nameplate. 6.1 Throttling service − The Type 3278 Pneumatic Rotary Actua- tor with 160 or 320 cm² actuator area is designed for a maximum supply pressure of 6 bar when used for throttling service.
  • Page 28 EB 8321 EN...

  • Page 29: Malfunctions

    Malfunctions 7 Malfunctions Read hazard statements, warnings and caution notes in the 'Safety instructions and mea- sures' section. 7.1 Troubleshooting Malfunction Possible reasons Recommended action Actuator shaft does not Actuator is blocked. Check attachment. move on demand. Remove the blockage. Insufficient signal Check the signal pressure.
  • Page 30 EB 8321 EN...

  • Page 31: Servicing And Conversion

    Risk of actuator damage due to the use of unsuitable tools. WARNING WARNING Î Only use tools approved by SAMSON. Risk of personal injury due to exhaust air being vented. The actuator is operated with air. As a result, air is vented during operation.

  • Page 32: Periodic Testing

    SAMSON's After-sales tion 8.5.2) Service. − Only use original spare parts by 8.3 Mounting the actuator on SAMSON, which comply with the original the valve after service or specifications. conversion work 8.1 Periodic testing Î Mount the actuator (see the 'Installation' section).

  • Page 33: Conversion Work

    Servicing and conversion 4. Place on diaphragm case (1) and refas- It is possible to subsequently change the ten it to the housing (5) with bolts (40), bench range by removing or adding spring washers (54) and nuts (50). 8, 9 or 10 in the housing (see Table 8-4). 1.

  • Page 34: Ordering Spare Parts And Operating Supplies

    Servicing and conversion 8.6 Ordering spare parts and operating supplies Contact your nearest SAMSON subsidiary or SAMSON's After-sales Service for infor- mation on spare parts, lubricants and tools. Spare parts See Annex for details on spare parts. Lubricant See document u AB 0100 for details on suitable lubricants.

  • Page 35: Decommissioning

    Decommissioning 9 Decommissioning To decommission the actuator for service work or before removing it from the valve, The work described in this section is only to proceed as follows: be performed by personnel appropriately 1. Put the control valve out of operation. qualified to carry out such tasks.
  • Page 36 EB 8321 EN...

  • Page 37: Removal

    Removal 10 Removal − The actuator is put out of operation (see the 'Decommissioning' section). The work described in this section is only to be performed by personnel appropriately 10.1 Removing the actuator qualified to carry out such tasks. from the valve DANGER Î...
  • Page 38 10-2 EB 8321 EN...

  • Page 39: Repairs

    Î Do not perform any repair work on your side of your shipment so that the docu- own. ments are clearly visible. Î Contact SAMSON's After-sales Service 4. Send the shipment to the address given for repair work. on the RMA.
  • Page 40 11-2 EB 8321 EN...

  • Page 41: 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 8321 EN 12-1...
  • Page 42 12-2 EB 8321 EN...

  • Page 43: Annex

    Annex 13 Annex 13.1 Tightening torques Item Part Materials of nuts and bolts Tightening torque Hex bolts M10 (diaphragm A2/70 - A4/70 · 1.7709 - A193 B8M 30 to 35 Nm case bolting) Hex screw M12 (fastening of A2/70 - A4/70 · 1.7709 - A193 B8M 50 to 60 Nm the diaphragm plate) Cap screws M12 (fastening of...
  • Page 44 Annex 62,6 13-2 EB 8321 EN...

  • Page 45: After-Sales Service

    You can reach our after-sales service at aftersalesservice@samsongroup.com. 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.samsongroup.com) or in all SAMSON product catalogs.
  • Page 46 13-4 EB 8321 EN...
  • Page 48 EB 8321 EN SAMSON AKTIENGESELLSCHAFT Weismüllerstraße 3 · 60314 Frankfurt am Main, Germany Phone: +49 69 4009-0 · Fax: +49 69 4009-1507 samson@samsongroup.com · www.samsongroup.com...

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