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EB 8310-1 EN

Malfunctions

8 Malfunctions

Depending on the operating conditions, check the actuator at certain intervals to prevent
possible failure before it can occur. Operators are responsible for drawing up a test plan.

SAMSON's After-sales Service department can support you to draw up a maintenance plan
for your plant.

Troubleshooting

Malfunction

Possible reasons

Recommended action

Actuator stem does not move on
demand.

Actuator is blocked.

Check attachment.
Unblock the actuator.

Insufficient signal pressure

Check the signal pressure.
Check the signal pressure line for
leakage.

Signal pressure not connected to
the correct diaphragm chamber.

See section 3.1 and section 5.2.

Actuator stem does not stroke
through its complete travel
range.

Travel stop active

See section 6.4.

Insufficient signal pressure

Check the signal pressure.
Check the signal pressure line for
leakage.

Valve accessories incorrectly set. Check the actuator without valve

accessories.
Check the settings of the valve
accessories.

Contact SAMSON's After-sales Service department for malfunctions not listed in the table.

Tip

Note

Содержание 3271-5

Страница 1: ...nd Operating Instructions EB 8310 1 EN Translation of original instructions Edition April 2016 Type 3271 Pneumatic Actuator Type 3277 Pneumatic Actuator Pneumatic Actuators Type 3271 5 120 cm Type 327...

Страница 2: ...epartment aftersalesservice samson de The mounting and operating instructions for the devices are included in the scope of delivery The latest documentation is available on our website www samson de P...

Страница 3: ...3 3 Versions 15 3 4 Technical data 16 4 Preparation 20 4 1 Unpacking 20 4 2 Transporting and lifting 20 4 2 1 Transporting 20 4 2 2 Lifting 20 4 3 Storage 21 4 4 Preparation for installation 22 5 Mou...

Страница 4: ...1 Extending the actuator stem manually 36 6 5 2 Retracting the actuator stem manually 36 7 Maintenance 38 7 1 Replacing the diaphragm 40 7 2 Replacing the actuator stem seals 41 7 3 Determining dimens...

Страница 5: ...its intended purpose or for damage caused by external forces or any other external factors Refer to the technical data and nameplate for limits and fields of application as well as possible uses Reas...

Страница 6: ...y or property damage plant operators and operating personnel must prevent hazards that could be caused in the actuator by the process medium the operating pressure the signal pressure or by moving par...

Страница 7: ...lt As a result they do not fall within the scope of Di rective 94 9 EC For connection to the equipotential bonding system observe the requirements specified in section 6 3 of EN 60079 14 2014 10 VDE 0...

Страница 8: ...oving parts actuator stem which can injure hands or fingers if inserted into the actuator Do not insert hands or finger into the yoke while the valve is in operation While working on the actuator disc...

Страница 9: ...Excessively tightened torques lead to parts wearing out quicker Parts that are not tightened far enough may loosen Observe the specified tightening torques u AB 0100 Risk of actuator damage due to th...

Страница 10: ...ar 6 Bench range in psi 7 Operating travel in mm 8 Operating range in bar 9 Operating range in psi 10 Permissible supply pressure pmax in bar 11 Permissible supply pressure pmax in psi 12 Symbol indic...

Страница 11: ...EB 8310 1 EN 11 Markings on the device...

Страница 12: ...signal pressure pst The direction of ac tion of the actuator stem A7 depends on how the springs are installed in the actuator A maximum of twelve springs partly fitted in one another can be installed...

Страница 13: ...ure routing A2 2 Connection for actuator stem extends FA A2 3 Connection for actuator stem retracts FE A4 Diaphragm A5 1 Diaphragm plate A5 2 Diaphragm plate A7 Actuator stem A8 Ring nut A9 Hexagon nu...

Страница 14: ...ate must be aligned with the marking A2 5 If the actuator is operated without a position er a connecting plate A2 1 accessories see Fig 4 is required instead of the switcho ver plate In this case the...

Страница 15: ...reduced or the control signal fails the springs move the ac tuator stem upward and open a mounted globe valve The valve closes when the signal pressure is increased enough to overcome the spring forc...

Страница 16: ...ormity Temperature range The permissible temperature range is deter mined by the NBR diaphragm material Throttling service 35 to 80 C 31 to 176 F On off service 20 to 80 C 4 to 176 F Supply pressure T...

Страница 17: ...5 Actuator area cm 120 120 Height H 69 70 H1 205 293 H4ratedFA 75 75 H4maxFA 78 78 H4maxFE 78 78 H5 88 H6 34 34 H8 75 75 Diameter D 168 168 D2 10 10 Thread d M30 x 1 5 1 M30 x 1 5 1 Air connection a...

Страница 18: ...operation Dimensional drawings H H6 H4 D D2 d H1 H H5 H6 H4 D D2 d H8 Type 3271 5 with handwheel Type 3277 5 with travel stop H6 max 58 D2 d M14 x 1 H6 max 58 D2 d M14 x 1 10 5 10 5 Versions with 7 5...

Страница 19: ...EB 8310 1 EN 19 Design and principle of operation...

Страница 20: ...can provide more detailed transport and lift ing instructions on request 4 2 1 Transporting The actuator can be transported using lifting equipment e g crane or forklift Leave the actuator in its tran...

Страница 21: ...urface coatings Remove any damage immediately Protect the actuator against moisture and dirt Store it at a relative humidity of less than 75 In damp spaces prevent con densation If necessary use a dry...

Страница 22: ...t the type desig nation material and temperature range of the actuator match the plant condi tions Check the pressure gauge installed on valve accessories to make sure it func tions When the valve and...

Страница 23: ...EB 8310 1 EN 23 Preparation...

Страница 24: ...ation for additional mounting instructions 5 1 Mounting the actuator onto the valve Proceed as follows if the valve and actuator have not been assembled by SAMSON Remove the mounted actuator before mo...

Страница 25: ...l pressure range value corresponds to the minimum value of the bench range or operating range see section 5 3 for adapted travel range The upper signal pressure range value corresponds to the maximum...

Страница 26: ...Plug stem with plug 84 Travel indicator scale A2 Bottom diaphragm case A7 Actuator stem A8 Ring nut A27 1 Stem connector nut A27 2 Bearing sleeve bottom part of the stem connector A27 3 Lock nut Fig 6...

Страница 27: ...ench range to the actuator Fasten tight the stem connector nut A27 1 at the bottom end of the actua tor stem A7 to the bearing sleeve A27 2 on the plug stem 5 Disconnect the signal pressure In the act...

Страница 28: ...the signal pressure to the top signal pressure connection S The signal pressure is routed to the top diaphragm chamber and moves the ac tuator stem A7 downward opposing the spring force A2 4 A2 5 A2 9...

Страница 29: ...nch range is shifted Example DN 25 valve with 7 5 mm rated travel and 120 cm actuator with 15 mm rat ed travel 0 4 to 1 2 bar bench range The signal pressure for half of the actuator travel 7 5 mm is...

Страница 30: ...s pressure in the device Furthermore the vent plugs allow air intake to prevent a vacuum from forming in the device Locate the vent plug on the opposite side to the workplace of operating personnel On...

Страница 31: ...on off service the supply pressure must be limited depending on the bench range or operating range of the actuator The applica ble bench range or operating range which the actuator can move through i...

Страница 32: ...to request a new name plate The direction of action and fail safe action of pneumatic actuators can be changed The fail safe action is indicated on the nameplate by a symbol see section 2 1 Actuator...

Страница 33: ...ignal pressure routing A4 Diaphragm A5 1 Diaphragm plate A5 2 Diaphragm plate A7 Actuator stem A8 Ring nut A9 Hexagon nut A10 Spring A15 Collar nut A16 Vent plug A20 Hexagon bolt A21 Hexagon nut A40 R...

Страница 34: ...ing force as the signal pressure increases 14 Affix a new nameplate with changed symbol and new configuration ID to the actuator 15 Mount the actuator on the valve see sec tion 5 1 6 3 2 Reversal of t...

Страница 35: ...pres sure as described in section 5 2 The actuator springs which now push against the diaphragm plate from above cause the actuator stem to extend The signal pressure is connected to the bot tom conn...

Страница 36: ...he required travel stop 3 Retighten lock nut A70 6 5 Version with handwheel A stem connector A51 links the handwheel and actuator stem The actuator stem posi tion can be adjusted using the handwheel A...

Страница 37: ...EB 8310 1 EN 37 Operation A51 Stem connector A60 Handwheel A60 A51 Fig 11 Type 3271 5 Actuator with handwheel...

Страница 38: ...ssively high or low tightening torques Observe the specified torques on tightening actuator components Excessively tightened torques lead to parts wearing out quicker Parts that are not tightened far...

Страница 39: ...ignal pressure routing A4 Diaphragm A5 1 Diaphragm plate A5 2 Diaphragm plate A7 Actuator stem A8 Ring nut A9 Hexagon nut A10 Springs A15 Collar nut A16 Vent plug A20 Hexagon bolt A21 Hexagon nut A40...

Страница 40: ...new diaphragm on the dia phragm plate A5 2 Place on the other diaphragm plate A5 1 8 Check the sealing element of the collar nut A15 If necessary renew it order no 8353 0533 9 Apply a suitable lubric...

Страница 41: ...A1 14 Fasten the top and bottom diaphragm cases A1 A2 together using the nuts A21 and bolts A20 15 Mount the actuator on the valve see sec tion 5 1 7 2 Replacing the actuator stem seals We recommend...

Страница 42: ...pply a suitable lubricant to the new ra dial shaft seal 7 Use a suitable tool to mount the radial shaft seal 8 Renew the dry bearing A42 and wiper A41 if necessary 9 Apply a suitable lubricant to the...

Страница 43: ...ctuator to your nearest SAMSON subsidiary SAMSON subsidiaries are listed on our website at u www samson de Contact 7 5 Ordering spare parts and operating supplies Contact your nearest SAMSON subsidiar...

Страница 44: ...heck attachment Unblock the actuator Insufficient signal pressure Check the signal pressure Check the signal pressure line for leakage Signal pressure not connected to the correct diaphragm chamber Se...

Страница 45: ...EB 8310 1 EN 45 Malfunctions...

Страница 46: ...apply a sig nal pressure corresponding to approx 50 of the bench range to the actuator Undo the ring nut A8 Disconnect the signal pressure In the actuator stem retracts version undo ring nut A8 5 Lif...

Страница 47: ...sleeve A27 3 remains on the valve 7 Fasten ring nut A8 on the actuator 9 3 Disposal Observe local national and internation al refuse regulations Do not dispose of components lubri cants and hazardous...

Страница 48: ...ations Please submit the following details Order number and position number in the order Type model number actuator area travel and bench range e g 0 2 to 1 bar or the operating range of the actuator...

Страница 49: ...5 20 5 1 8 5 2 1 4 39 7 26 27 33 42 2 42 40 10 26 27 4 10 5 1 5 2 15 2 39 7 40 1 25 20 21 206 207 42 41 41 2 1 8 Type 3271 5 and Type 3277 5 Actuators 120 cm Stem extends FA Stem retracts FE Stem exte...

Страница 50: ...8 7 5 1 8 5 2 1 4 39 7 33 42 2 42 40 21 25 20 25 20 21 1 10 206 207 40 42 41 41 27 3 27 1 27 3 X X Type 3271 5 and Type 3277 5 Actuator 120 cm as version for micro flow valve Stem extends FA Stem ret...

Страница 51: ...EB 8310 1 EN 51...

Страница 52: ...SAMSON AG MESS UND REGELTECHNIK Weism llerstra e 3 60314 Frankfurt am Main Germany Phone 49 69 4009 0 Fax 49 69 4009 1507 samson samson de www samson de EB 8310 1 EN 2016 04 12 English...

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