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Samson 3271, Mounting And Operating Instructions, Page: 13 / 36

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Samson 3271 Mounting And Operating Instructions Download Page 13

EB 8310-8 EN 

 13 

Design and principle of operation

A16

A1

A10
A88

A180

A127

A4

A5

A2
S

A8

A7

A26/27

A170

A173

A174

A1

Top diaphragm case

A2

Bottom diaphragm case

A4

Diaphragm

A5

Diaphragm plate

A7

Actuator stem

A8

Ring nut

A10

Spring

A16

Vent plug

A26/27 Stem connector clamp

A88

Rod (anti-rotation fixture)

A127

Pipe (anti-rotation 

fixture)

A170

Guide rod

A173 Support bearing

A174

Support stem

A180

Distance ring

S

Signal pressure 

connection

Fig. 2: 

Type 3271 Pneumatic actuator with 1400 cm² actuator area and 250 mm travel

Summary of Contents for 3271

Page 1: ...Mounting and Operating Instructions EB 8310 8 EN Translation of original instructions Edition February 2017 Type 3271 Pneumatic Actuator Actuator area 1400 250 cm...

Page 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...

Page 3: ...extends FA 12 3 3 2 Version with direction of action actuator stem retracts FE 14 3 4 Technical data 14 4 Measures for preparation 16 4 1 Unpacking 16 4 2 Transporting and lifting 16 4 2 1 Transporti...

Page 4: ...spare parts and operating supplies 26 8 Malfunctions 27 9 Decommissioning and disassembly 28 9 1 Decommissioning 28 9 2 Removing the actuator from the valve 28 9 3 Relieving the spring compression in...

Page 5: ...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 Reasonably forese...

Page 6: ...could be caused in the actuator by the process medium the operating pressure the signal pressure or by moving parts by taking appropriate precautions They must observe all hazard statements warning a...

Page 7: ...these mounting and operating instructions Mounting and operating instructions for the mounted valve Mounting and operating instructions for mounted valve accessories positioner solenoid valve etc Safe...

Page 8: ...al injury when the actuator vents While the valve is operating the actuator may vent during closed loop control or when the valve opens or closes Install the control valve in such a way that the actua...

Page 9: ...vely 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 eno...

Page 10: ...in bar 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 i...

Page 11: ...EB 8310 8 EN 11...

Page 12: ...ragm plate are ar ranged in the actuator With direction of ac tion actuator stem retracts the compressed air is applied to the signal pressure connec tion on the top diaphragm case With direc tion of...

Page 13: ...e A4 Diaphragm A5 Diaphragm plate A7 Actuator stem A8 Ring nut A10 Spring A16 Vent plug A26 27 Stem connector clamp A88 Rod anti rotation fixture A127 Pipe anti rotation fixture A170 Guide rod A173 Su...

Page 14: ...aterial Temperature range NBR 1 35 to 90 C 31 to 194 F PVMQ 60 to 90 C 76 to 194 F 1 In on off service lowest temperature restricted to 20 C 4 F Supply pressure The maximum permissible supply pressure...

Page 15: ...tuator area cm 1400 Travel mm 250 Height H 800 H4ratedFA 415 H4maxFA 420 H4maxFE 170 H6 85 H7 1 110 Diameter D 534 D2 40 d thread M100 x 2 Air connection a G 1 1 NPT Weight Approx kg 417 1 Height of e...

Page 16: ...falling Stay clear of suspended or moving loads Risk of lifting equipment tipping and risk of damage to lifting accessories due to exceed ing the rated lifting capacity Only use approved lifting equip...

Page 17: ...actuator from tilting or tip ping Do not leave loads suspended when in terrupting work for longer periods of time Make sure that the additional sling be tween the eyebolt or swivel lifting hook and th...

Page 18: ...control valve 4 3 Storage Risk of actuator damage due to improper storage Observe storage instructions Avoid long storage times Contact SAMSON in case of different stor age conditions or long storage...

Page 19: ...and to pre vent cracking do not bend them or hang them up We recommend a storage temperature of 15 C for elastomers Store elastomers away from lubricants chemicals solutions and fuels SAMSON s After s...

Page 20: ...ve and actuator have not been assembled by SAMSON Remove the mounted actuator before mounting another actuator see sec tion 9 3 Preloading the actuator springs increases the thrust and reduces the tra...

Page 21: ...ctuator springs that are to be pre loaded subsequently determine the up per and lower signal pressure range as described in section 5 2 8 Depending on the direction of action Actuator stem extends App...

Page 22: ...gs Risk of actuator damage due to the springs being tensioned unevenly Distribute clamping bolts and nuts evenly around the circumference of the top and bottom cases Tighten the nuts gradually in a cr...

Page 23: ...essure range value is 1 15 bar and the new operating travel 200 mm Write the new signal pressure range of 1 15 to 2 55 bar on the actuator name plate as the operating range with pre loaded springs A1...

Page 24: ...d with an oversized actuator e g the rated travel of the actuator is larger than the rated travel of the valve only the first half of the actuator s bench range can be used Example DN 200 valve with 1...

Page 25: ...vice 6 2 On off service In on off service the supply pressure must be limited depending on the bench range or signal pressure range of the actuator The applicable bench range or signal pressure range...

Page 26: ...of operation See associated valve documentation 2 Remove the actuator from the valve see section 9 2 3 Send the actuator to your nearest SAMSON subsidiary SAMSON subsid iaries are listed on our websit...

Page 27: ...ock 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 2 Actuat...

Page 28: ...alve documentation 2 Disconnect the pneumatic air supply to depressurize the actuator 9 2 Removing the actuator from the valve 1 Put the control valve out of operation See associated valve documentati...

Page 29: ...rew A21 Hexagon nut A22 Hexagon bolt preloading A23 Hexagon nut preloading A24 Blanking plug A25 Washer A180 Distance ring A22 A23 A24 A25 A20 A21 A1 A180 A2 Fig 6 Actuator with clamping nuts and bolt...

Page 30: ...aries The addresses of SAMSON AG its subsid iaries representatives and service facilities worldwide can be found on the SAMSON website in all SAMSON product catalogs or on the back of these Mounting a...

Page 31: ...29 Hexagon screw 35 Compressor 36 Distance pipe 41 Wiper 42 Dry bearing 82 Hexagon nut 1 84 Washer 88 Guide stem anti rotation fixture 100 Nameplate 101 Label preloading 107 Label actuator transport 1...

Page 32: ...32 EB 8310 8 EN 20 25 21 22 181 84 23 182 24 88 173 42 42 41 8 303 100 101 101 1 180 16 107 2...

Page 33: ...EB 8310 8 EN 33 10 11 187 184 183 171 183 126 172 126 170 176 175 82 35 17 4 5 7 27 26 29 127 184 187 11 10...

Page 34: ...34 EB 8310 8 EN...

Page 35: ...EB 8310 8 EN 35...

Page 36: ...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 8 EN 2017 03 15 English...

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