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A T T U A T O R I

- PNEUMATIC ACTUATORS AND ACCESSORIES -

UsermanING ISSUE .10 March 2004

GT ATTUATORI S.r.l.

REA MI 1558400

FAX (02) 90390368

V.le Europa 17 - 20090 Cusago

Partita IVA e Cod.Fisc.12449540157

TEL (02) 90390322

Milan - ITALY-

E-mail [email protected]
www.gtrevisan.it

PAG. 1 OF 20

INSTALLATION

OPERATION &

MAINTENANCE MANUAL

RACK AND PINION

PNEUMATIC ACTUATORS

GTX SERIES

ISO 9001:2000- Cert. n° 0210/3

II 2 GD c 110°C

Technical File Ref. n° 2003/01

Содержание GTX Series

Страница 1: ... FAX 02 90390368 V le Europa 17 20090 Cusago Partita IVA e Cod Fisc 12449540157 TEL 02 90390322 Milan ITALY E mail g trevisan iol it www gtrevisan it PAG 1 OF 20 INSTALLATION OPERATION MAINTENANCE MANUAL RACK AND PINION PNEUMATIC ACTUATORS GTX SERIES ISO 9001 2000 Cert n 0210 3 II 2GDc110 C Technical File Ref n 2003 01 ...

Страница 2: ...MANUAL TABLE OF CONTENT PAG 1 0 INTRODUCTION 3 2 0 STORAGE 3 3 0 OPERATIONAL CHARACTERISTICS 3 4 0 ACTUATOR INSTALLATION 4 5 0 DISASSEMBLY PROCEDURE 7 6 0 RE ASSEMBLY PROCEDURE 8 7 0 SPRING CARTRIDGES INSTALLATION 10 8 0 SOLENOID VALVES CHARACTERISTICS 12 9 0 SOLENOID VALVES INSTALLATION 15 10 0 FCCW TO FCW CONVERSION 16 11 0 ACTUATOR SIZING 17 12 0 DOUBLE ACTING ACTUATORS 17 13 0 SPRING RETURN AC...

Страница 3: ...le with rotation of 90 120 e 180 SPRING RETURN Available with rotation of 90 The double acting and spring return actuators can easily be field converted to the other configuration by insertion or removal of the unique patented G T Attuatori spring cartridges 2 0 STORAGE All G T Attuatori actuators are factory lubricated for life The actuator ports are plugged to prevent liquids or other materials ...

Страница 4: ... same spring return actuator with the piston orientation changed to convert the actuator from a fail clockwise to a fail counter clockwise unit as described in Section 10 0 FCCW to FCW conversion 4 0 ACTUATORS INSTALLATION The actuators are designed to be easy to install The actuators come with one or more ISO 5211 DIN 3337 standard bottom mounting pattern selon the model for direct assembling to ...

Страница 5: ...unting bracket on to valve and hand tighten all fasteners Be sure not to fully torque bolts until entire assembly is correctly aligned and installed 4 4 Place coupling on valve stem if necessary and position actuator on mounting brackets Aligne valve and actuator assembli so as to eliminate shear force on system Rotate the actuator to open direction normally counter clockwise as regards to the val...

Страница 6: ...er rotation The travel stops allow for a range of about 95 to 85 If a larger range is necessary consult directly G T Attuatori people for information on Extended final limit stops NOTE Improper setting of travel stops can reduce the actuators life 4 7 Rotate actuator and valve assembly to desired degree it is best to consult valve Installation Maintenance sheet to determine the correct set point f...

Страница 7: ...cket and coupling when present Disassemble accessories as limit switches microswitches box and positioner if present and place in clean environment 5 3 Remove the eight screws and remove end caps 5 4 Remove O Rings from end caps NOTE unless actuator has not been in service it will be better to replace the O Ring set See table 2A at page 8 5 5 Rotate pinion in Counter Clockwise direction NOTE if un...

Страница 8: ...t the pinion is free to be removed through the bottom of the actuator body Using a rubber mallet lightly tap the top of the pinion When the pinion is loose from the body remove the pinion through the bottom See figure 5 The O Rings and guide kits contains the following items 6 0 ASSEMBLY PROCEDURE 6 1 Inspect all wear surfaces for excessive wear or possible damage 6 2 Make sure all metallic parts ...

Страница 9: ...b Turn actuator up on its side Rotate pinion counter clockwise until both pistons disengage from pinion Rotate pinion with a wrench to correct position Apply light pressure to pistons until pinion and pistons engage Close actuator and check for correct pinion orientation as at section 6 Repeat this step as many times as necessary to get the correct orientation FIGURE 6 The figure shows the interna...

Страница 10: ...o actuator body in the same orientation as before taking well care not to move pistons If pistons are moved repeat steps from point 6 5 Install pinion washer and snap ring Begin test again as described in this section If the problem persist contact your local G T Attuatori representative 7 0 CARTRIDGE SPRINGS INSTALLATION The actuators have the unique ability to be field converted from DOUBLE ACTI...

Страница 11: ...LENOID VALVES SPACIFICATIONS G T Attuatori solenoid valves are designed for long life with only one part moving for commutation and sealing of air compressed flow A B 2 3 1 4 6 5 FIGURE 7 The figure shows the front view of a piston with the cartridge spring seats numbered and the rack position Total number of cartridge springs Cartridge springs All locations positions 1 2 3 4 5 6 1 1 4 2 4 6 2 3 5...

Страница 12: ... pattern for smaller actuators G T Componenti also offers a special adapter plate to allow for a NAMUR standard pattern solenoid valves to be mounted on any actuator as shown in figure 9 G T Attuatori offers 4 standard models of solenoid valves Voltages 24 48 110 220 V AC 50 60Hz 12 24 110 V DC Consumption 3 5 Watt DC 5 VA AC Pressures Min 2 5 Bar Max 10 Bar 1 SV 1 Single Solenoid ports 1 4 NPT Mo...

Страница 13: ...e Solenoid ports 1 4 NPT Mounting on actuators with NAMUR adapter plate from GTX 45 through GTX 92 Direct mounting on actuators from GTX 110 through GTX 300 KV Factor 9 3 SV 2 VC Double Solenoid ports 1 4 NPT Mounting on actuators with NAMUR adapter plate from GTX 45 through GTX 92 Direct mounting on actuators from GTX 110 through GTX 300 KV Factor 9 4 SV 2 VS Double Solenoid ports 1 4 NPT Mountin...

Страница 14: ...ERATION MAINTENANCE MANUAL G T Attuatori offers 2 standard models of Pneumatic command valves 1 PV 1 Single pneumatic command port 1 8 GAS ports 1 4 NPT Mounting on actuators with NAMUR adapter plate from GTX 45 through GTX 92 Direct mounting on actuators from GTX 110 through GTX 300 KV Factor 9 2 PV2 Double pneumatic command port 1 8 GAS ports 1 4 NPT Mounting on actuators with NAMUR adapter plat...

Страница 15: ...2 Affix the solenoid valve to side of actuator with 2 M5x25 socket head screws supplied with the solenoid valve inserting in the middle suitable O Rings into the port seats A and the Commutation Disk Pack into the port seats B Connect supply line to solenoid valve central port Supply Pressurize line and check for possible leaks 9 3 G T Attuatori solenid valves are equipped with manual override By ...

Страница 16: ...of the piston See figure 12 Upon rotation of pistons reassembly can be accomplished by following the reassembly instruction in Section 6 0 Parts 6 1 to 6 12 of this manual FIGURE 12 Rotate the piston shown in Fig 12 a as in position shown in Fig 12 b to obtain the FCCW configuration Mounting C REMEMBER IN CASE OF SPRING RETURN TYPE RE INSERT CARTRIDGE SPRINGS BEFORE END CAPS ASSEMBLING ACCORDINGLY...

Страница 17: ...erience and not the average air supply pressure If an actuator is supplied by a lower air pressure than it is sized for failure or improper performances can occur 12 0 AIR T0 AIR ACTUATORS 12 1 Select the largest torque opening or closing torque and increase that number of 10 NOTE Adding 10 is done to ensure an acceptable factor of safety The data published in the sizing table indicates average ca...

Страница 18: ...lve torque values Follow across that row to determine the actuator size and cartridge spring configuration Note Stroke time is equal for opening and closing strokes Time shown is for entire go and back cycle Cicle tested at 6 Bar and with 75 load of available torque Type SPRINGS 0 5 Bar K2 51 195 K3 76 150 GTXN 127x90 K4 102 105 K5 127 60 K6 153 15 NOTE this table is an excerpt from the sinzing ch...

Страница 19: ... ATEX 94 9 CE Directive Gas fogs vapours and dusts Zone 1 21 2 GD Gas fogs vapours and dusts Zone 2 22 3 GD 16 1 Pneumatic actuator suitability to installation place In case of use in areas with explosion danger must be verified that the actuator is suitable to zone classification and to inflammables peculiarity present on the plant Safety fundamental requirements against explosion risk into class...

Страница 20: ...nteetheG T Attuatori undertaketo makereparationorsubstitution ofthosepartsthatwillretainreallydefectivesforown responsability to perform in own works and ex factory The guarantee decays in the following cases Productutilizationconditionnotsuitasshowninthetecnicalspecifications Product installation not properly done Productutilizationfordifferentapplicationsfromthoseforwhichisprepared Inanycase how...

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