Mounting and Operating Instructions EB 8310 EN
Contents
1. i diaphragm chamber pressure is connected to the loading pres 2 1 11 9 5 3 OP MEN 4 8 11 7 7 1 2 S 12 1 20 21 22 15 13 i gi 16 Er ez a 9 1 Nut 1 1 Nut 7 Diaphragm plate 21 2 Actuator stem 7 1 Metal plate 22 13 Wiper 2 1 Bushing 8 Diaphragm 15 Ring nut 3 Ventplug 9 Nuts and bolts 16 18 Stem connector 3 1 Vent plug 10 Bottom diaphragm case 20 Screw 60 cm 4 Loading press connection 11 Loading press connection 21 Washer 60 cm Actuator stem retracts Actuator stem extends 22 Sleeve 60 cm 5 Top diaphragm case 12 Stem seal 6 Springs 12 1 Dry bearing Fig 3 Type 3271 5 Actuators with 120 cm top and 60 cm bottom effective diaphragm area 4 EB 8310 EN Actuator stem extends When the signal pressure is reduced or the air supply fails the springs move the actua tor stem downwards and close the valve The valve opens when the signal pressure is increased enough to overcome the force ex erted by the springs Actuator stem retracts When the signal pressure is reduced or the air supply fails the springs move the actua tor stem upwards and open the valve The valve closes when the signal pressure is in 3 1 3 a ae ZU ae 3 7 Actuator stem extends Actuator stem retracts 3 Loading pressure connection 3 1 Vent plug 4 Loading pressure connection 4 1 Vent plug 15 Ring nut 16 Stem connector Fig 4 Tandem actvator Desig2. extends FA 1 1 Nut 1 1 Nut 2 Actuator stem 3 Vent plug 6 Springs Ss 4 Loading pressure 7 Diaphragm plate eo Qo connection 8 Diaphgram es 5 Topdiaphragm 8 1 Hose clamp case Fig 2 Sectional diagram of Type 3271 5 6 1 8 a Do 9 8 1 x S 7 a 12 10 o een 12 1 11 3 EP 9 Nutsand bolts 13 10 Bottom diaphragm case 11 Loading pressure connection 16 12 Stem seal 12 1 Dry bearing 13 Wiper 15 Ring nut 16 Stem connector EB 8310EN 3 Design and principle of operation A maximum of 30 springs can be installed sure connection 4 to fill the top diaphragm partly fitted inside one another In an actuator with the fail safe action Actuator stem extends FA the loading pressure is connected to the loading pres chamber with air which causes the actuator stem to move downwards The stem connector 16 connects the actua tor stem 2 to the plug stem of the valve sure connection 11 to fill the bottom dia Fail safe action phragm chamber with air which causes the actuator stem to move upwards In an actuator with the fail safe action Actuator stem retracts FE the loading When the signal pressure fails the fail safe action of the actuator depends on whether the springs are installed in the top or bottom
3. and diaphragm 8 out of the bottom diaphragm case 10 4 Unscrew nut 1 while holding the nut 1 1 stationary with a suitable tool Caution Proceed carefully to avoid damaging the seals of the actuator stem Caution Do not loosen the nut 1 1 on the actuator stem It is painted over to protect it If however it does become loose it is es sential that the dimension a from the top of the nut to the bottom of the actuator stem is kept as shown in Fig 2 and the table below 2 Actuator cm Dimension a in mm Fig 2 120 100 5 or 89 with threaded end 240 98 25 350 107 25 125 for 15 mm rated travel 0 4 1 2 bar ie 144 for 30 mm and 40 mm rated travel 1400 230 2800 430 5 Lift off the diaphragm plate with dia phragm and replace them in reverse or der Tighten nut 1 6 Apply lubricant sealant order no 8152 0043 to the actuator stem 7 Place the diaphragm plate with dia phragm in the top diaphragm case In sert the springs 6 and slide the lower diaphragm case over the actuator stem 8 Screw tight the nuts and bolts of the dia phragm cases 9 Remove vent plug 3 from top dia phragm case and screw it into the load ing pressure connection on the bottom diaphragm case The actuator springs now press against the diaphragm plate from below and cause the actuator stem to retract The loading pres sure is connected over the connection 4 to the to
4. Only apply the loading pressure to the diaphragm chamber that does not con tain the springs It is important for a troublefree operation of the actuator that the vent plug 3 is not blocked Make sure in versions with a handwheel that the plug stem can move freely when the valve is be ing positioned by the pneumatic actuator by moving the handwheel into a neutral posi tion Fig 5 for 240 to 700 cm and Fig 8 for 1400 and 2800 cm 2 1 Reversing the operating direction fail safe action The operating direction i e fail safe action of pneumatic actuators can be changed Prior to proceeding you must remove the actuator from the valve The fail safe action Actuator stem extends or Actuator stem retracts is specified on the nameplate with the initials FA and FE on Type 3271 Actuator or by a symbol on Type 3271 5 Actuator Caution To disassemble an actuator with preloaded actuator springs recog nizable by the long bolts on the dia phragm chambers always undo the short bolts first and then unthread the long bolts slowly and evenly until the actuator springs are fully decom pressed 6 EB8310 EN 2 1 1 Type 3271 Reversing the fail safe action Actuator stem extends to Actuator stem retracts Fig 2 1 Unthread nuts and remove the bolts 9 from the diaphragm cases 2 Lift off the top diaphragm case 5 and remove the springs 6 3 Pull the actuator stem 2 with dia phragm plate 7
5. adjust the cap 33 to set the required travel stop 2 Tighten the lock nut 34 again Operation Actuator stem retracts Actuator stem extends 2 Actuator stem 7 Diaphragm plate 31 Lock nut 32 Nut 33 Cap 34 Lock nut Fig 7 Travel stop EB8310EN 11 Operation 2 4 Manual operation of Type 3271 with side mounted handwheel Note To operate the handwheel on actua tors with 1400 and 2800 cm diaphragm areas do not use any additional tools such as a lever or wrench 2 4 1 Normal operation with the handwheel locked The handwheel is not used The valve is po sitioned by the pneumatic signal pressure applied to the valve To achieve this the pin next to the actuator stem must be in the neutral position The pin must sink into the flange so far that its groove is aligned with the top of the flange If this is not case Pull the locking knob on the side all the way out and turn it to unlock the handwheel Turn the handwheel until the pin reaches the neutral position Turn the locking knob until it engages to lock the handwheel again The easiest way to adjust the handwheel is with the valve in the fail safe position 2 4 2 Actuator stem extends upon air supply failure The manual override must overcome the force of the actuator springs to open the valve 12 EB8310 EN Pull the locking knob on the side all the way out and turn it
6. hazards due to their specialized training their knowledge and experience as well as their knowledge of the relevant standards Any hazards which could be caused by the signal pressure and moving parts of the actuator are to be prevented by means of appropriate measures Proper shipping and appropriate storage are assumed 2 EB8310 EN 1 Design and principle of operation The Type 3271 Actuators are primarily used for attachment to Series 240 250 260 and 280 Valves Type 3271 5 with a die cast aluminum casing and effective diaphragm areas of 60 and 120 cm2 is mounted to Type 3510 Valves and Series 240 Valves The Type 3271 Actuator is made up of two diaphragm cases a rolling diaphragm and springs Actuators with manual override additionally Design and principle of operation have a handwheel mounted on the top dia phragm case or mounted on the side of the valve yoke The handwheel moves the actua tor stem over a spindle The Type 3271 Ac tuator can be equipped in a special version with a mechanically adjustable travel stop Fig 7 The signal pressure creates a force at the di aphragm surface which is balanced by the springs 6 arranged in the actuator The number of springs and their compression determine the bench range signal pressure range while taking the rated travel into ac count which is directly proportional to the signal pressure retracts FE 2 4 Actuator stem Actuator stem 3 i
7. to unlock the handwheel Turn the handwheel counterclockwise direction Auf Open Ouvert the pin sinks into the flange Initially the handwheel is easy to turn and after a certain point of pressure is reached the valve starts to open On reaching the final position at the stop do not turn the handwheel any fur ther by force Caution Risk of damage After finishing manual operation turn the handwheel to bring the pin back into the neutral position again Turn the locking knob until it engages to lock the handwheel again 2 4 3 Actuator stem retracts upon air supply failure The manual override must overcome the force of the actuator springs to close the valve Pull the locking knob on the side all the way out and turn it to unlock the handwheel Turn the handwheel clockwise direction Zu Close Ferme the pin emerges from the flange Initially the handwheel is easy to turn and after a certain point of pressure is reached the valve starts to close On reaching the final position at the stop do not turn the handwheel any fur ther by force Caution Risk of damage After finishing manual operation turn the handwheel to bring the pin back into the neutral position again Turn the locking knob until it engages to lock the handwheel again 2 4 4 Actuator stem extends when supply air is applied The manual override must overcome the force of the actuator springs to open the valve Do not close the valve a
8. Pneumatic Actuator Type 3271 Type 3271 Type 3271 5 Type 3271 with handwheel Type 3271 52 Fig 1 Type 3271 Actuators Mounting and Operating Instructions EB 8310 EN Edition October 2004 Contents Contents Safety instructions Page Design and principle of operation 2 222222 3 Operadh n no 3 3 v EORR XU RSS XU Res 6 Reversing the operating direction fail safe action 2 2 6 lype32714 4 0 0 eoe es eh T e EE B quee d 6 Actuator with handwheel 2 22 ee nenne 8 Replacing the diaphragm and stem seal 2 222222 020 10 Adjusting the travel stop 2 222 2 om ee 11 Manual operation of Type 3271 with side mounted handwheel 12 Normal operation with the handwheel locked 12 Actuator stem extends upon air supply failure LL 12 Actuator stem retracts upon air supply failure 2 222222 12 Actuator stem extends when supply air is applied 13 Actuator stem retracts when supply air isapplied 13 Description of nameplate 2 2 222 onen 14 Customer inquiries 2 2 le 15 General safety instructions Assembly start up and operation of the device may only be performed by trained and experienced personnel familiar with this product According to these mounting and operating instructions trained personnel is referred to individuals who are able to judge the work they are assigned to and recognize possible
9. eal Diaphragm Fig 2 1 Remove the diaphragm plate 7 to gether with diaphragm 8 and actuator stem 2 from the diaphragm case as de scribed in section 2 1 2 Remove the hose clamp 8 1 and pull it together with the diaphragm 8 off the diaphragm plate 7 not necessary with Type 3271 5 as the diaphragm is held in place by the metal plate 7 1 3 Stretch the new diaphragm onto the dia phragm plate Fit the hose clamp 8 1 evenly into the groove intended for it and tighten A Reassemble actuator as described in section 2 1 Stem seal Fig 6 12 1 Remove the diaphragm plate 7 to gether with the actuator stem 2 from the diaphragm case as described in section 2 1 2 Coat the new stem seal 12 with lubri N 2 cant sealant order no 8152 0043 and insert it 3 If necessary replace the dry bearing 12 1 and wiper 13 with new ones as well 4 Reassemble the actuator as described in section 2 1 Fig 6 Actuator stem seal 10 EB 8310 EN 2 3 Adjusting the travel stop Type 3271 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 2 Undo the lock nut 31 and adjust the nut 32 to set required travel stop 3 Tighten the lock nut 31 again Upward travel stop actuator stem retracts 1 Undo the lock nut 34 and
10. ling nut 25 Then fasten the flange part 21 with the ring nut 28 2 Attach the ring 24 with clamping sleeve 23 3 Screw coupling nut 25 as far as it will go onto the coupling 22 and secure with threaded pins 26 Reversing the fail safe action Actuator stem retracts to Actuator stem extends Proceed as described in section 2 1 1 However use the word spindle with nut 27 in place of nut 1 Operation After reversing the operating direction 2 Attach the ring 24 with clamping 1 Place the flange part 21 and the cou sleeve 23 M plinginut 25 and then secure longe 3 Screw coupling nut 25 as far as it will part 21 with ring nut 28 go onto the coupling 22 and secure with threaded pins 26 Actuator stem Vent plug Loading press connection Top diaphragm case Springs 1 Additional springs Diaphragm plate 0 N40 Oo Oc R QNM Diaphragm 9 Nuts and bolts 8 1 Hose clip Neutral position Pointer points to groove in coupling 22 10 Bottom diaphragm case 26 i 11 Loading press connection 28 3 16 Stem connector 27 A 17 Handwheel 5 20 Lock nut 8 1 6 21 Flange part 7 22 Coupling 23 Clamping sleeve 9 24 Ring 25 Coupling nut 8 26 Threaded pin 6 1 27 Spindle with nut 10 28 Ring nut 11 Actuator stem retracts Actuator stem extends Fig 5 Actuators 240 350 und 700 cm with handwheel EB8310EN 9 Operation 2 2 Replacing the diaphragm and stem s
11. n and principle of operation creased enough to overcome the force ex erted by the springs The tandem actuator Fig 4 has two dia phragms connected to each other The sig nal pressure produces an actuating force double to that of an actuator with just one diaphragm Actuators with an additional manual over ride Fig 5 have a handwheel that moves the actuator stem over a spindle after the locking mechanism lock nut has been dis engaged A side mounted handwheel Fig 8 moves the stem over a bevel or worm gear Note Refer to the attached valve s Mounting and Operating Instructions to mount or remove the actuator from the valve Actuators with 2800 cm diaphragm area weigh 450 kg and cannot be mounted onto the valve on site Important The pneumatic actuators are designed for a maximum supply pressure of bar To prevent the actuator from being dam aged do not let the supply pressure exceed the upper spring range value by more than 3 bar when the actuator is used for flow switching service on off valve with the fail safe action Actuator stem retracts Label actuators that have a reduced supply pressure with a sticker max supply pres sure limited to bar The maximum supply pressure for actuators with fail safe action Actuator stem extends and mechanical travel stops should not ex ceed the upper spring range value by more than 1 5 bar EB8310EN 5 Operation 2 Operation Note
12. ny further than be fore unlocking the handwheel Pull the locking knob on the side all the way out and turn it to unlock the handwheel Turn the handwheel counterclockwise direction Auf Open Ouvert the pin sinks into the flange Initially the handwheel is easy to turn and the pin s position does not move anymore After a certain point of pres sure is reached how long depends on the valve travel the valve starts to open On reaching the final position at the stop do not turn the handwheel any fur ther by force Caution Risk of damage After finishing manual operation turn the handwheel to bring the pin back into the neutral position again Turn the locking knob until it engages to lock the handwheel again Operation 2 4 5 Actuator stem retracts when supply air is applied The manual override must overcome the force of the actuator springs to close the valve Do not open the valve any further than be fore unlocking the handwheel Pin with groove A Neutral position Locking knob locked Version in this drawing for 80 mm travel Fig 8 Side mounted handwheel EB8310 EN 13 Description of nameplate Pull the locking knob on the side all the 3 Description of nameplate way out and turn it to unlock the handwheel Turn the handwheel clockwise direction Zu Close Ferm the pin emerges f
13. p diaphragm chamber The actuator stem starts to extend when the signal pres sure overcomes the force of the springs 10 Record the changed fail safe action on the nameplate Proceed in the same manner for the Type 3271 5 Actuator but additionally install the metal plate 7 1 For the version intended for attachment to micro flow valves additionally install the bushing 2 1 for the mechanical travel stop In Type 3271 52 Actuator with 60 cm dia phragm area unthread the screw 20 and then remove the washer 21 and sleeve 22 Operation Reversing the fail safe action Actuator stem retracts to Actuator stem extends Fig 2 1 Unthread nuts and remove the bolts 9 and lift off the top diaphragm case 5 2 Pull the diaphragm plate 7 and dia phragm with the actuator stem 2 out of the bottom diaphragm case 10 Re move the springs 6 3 Unscrew nut 1 while holding the nut 1 1 stationary with a suitable tool Caution Proceed carefully to avoid damaging the seals of the actuator stem 4 Remove the diaphragm plate with dia phragm and replace them in reverse or der Screw tight nut 1 5 Coat the actuator stem with sealant lu bricant order no 8152 0043 and in sert it into the bottom diaphragm cham ber along with the diaphragm plate and diaphragm 6 Insert springs 6 and place the top dia phragm case back on 7 Screw tight the nuts and bolts of the dia phragm cases 8 Remove the
14. rom the flange After a certain point of pressure is sAMSON 1 2 3 4 reached the valve starts to close HS FL 6 WI 7 On reaching the final position at the stop do not turn the handwheel any fur ther by force Caution Risk of damage 1 Type designation After finishing manual operation turn 2 Modification index the handwheel to bring the pin back into 3 Effective diaphragm area the neutral position again A Operating direction Turn the locking knob until it engages to Actuator stem extends FA lock the handwheel again Actuator stem retracts FE 5 Travel 6 Bench range spring range 7 Bench range with preloaded springs Fig 9 Nameplate 14 B 8310 EN Customer inquiries 4 Customer inquiries Please specify the following details on mak ing inquires Type and model number Effective diaphragm area Bench range spring range in bar Actuator version and its operating direc tion Dimensions and weights Refer to the Data Sheets T 8310 1 EN or T 8310 2 EN for the different actuator ver sions EB8310 EN 15 SAMSON AG MESS UND REGELTECHNIK Weism llerstra e 3 60314 Frankfurt am Main Germany Phone 49 69 4009 0 Fax 49 69 4009 1507 Internet http www samson de EB 8310 EN S Z 2004 11
15. vent plug 3 from the bot tom loading pressure connection and place it in the top connection The springs which are now pressed from the top against the diaphragm plate cause the actuator stem to extend The signal pressure is connected via the con nection 11 to the bottom diaphragm cham ber The actuator stem starts to retract when the signal pressure overcomes the force of the springs EB8310 EN 7 Operation 9 Record the changed fail safe action on the nameplate Proceed in the same manner for the Type 3271 5 Actuator but additionally install the metal plate 7 1 For an actuator intended for a micro flow valve install the bushing 2 1 for the travel stop For Type 3271 52 Actuator with 60 cm undo the screw 20 and then remove the washer 21 and sleeve 22 8 EB8310 EN 2 1 2 Actuator with handwheel 240 350 and 700 cm Fig 5 only 1 Undo lock nut 20 and relieve the springs 6 by turning the handwheel 17 2 Loosen threaded pin 26 and unscrew coupling nut 25 from the coupling 22 3 Knock out the clamping sleeve 23 and remove the ring 24 4 Unthread the ring nut 28 and lift off the flange part 21 Reversing the fail safe action Actuator stem extends to Actuator stem retracts Proceed as described in section 2 1 1 However use the word spindle with nut 27 in place of nut 1 After reversing the operating direction 1 Place the flange part 21 and coup
Download Pdf Manuals
Related Search