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UsermanING ISSUE .10 March 2004
A T T U A T O R I
- PNEUMATIC ACTUATORS AND ACCESSORIES -
GT ATTUATORI S.r.l.
V.le Europa 17 - 20090 Cusago
Milan - ITALY-
RACK AND PINION
PNEUMATIC ACTUATORS
GTX SERIES
II 2 GD c 110°C
Partita IVA e Cod.Fisc.12449540157
INSTALLATION
OPERATION &
.
MAINTENANCE MANUAL
ISO 9001:2000- Cert. n° 0210/3
Technical File Ref. n° 2003/01
REA MI 1558400
PAG. 1 OF 20
FAX (02) 90390368
TEL (02) 90390322
E-mail g.trevisan@iol.it
www.gtrevisan.it
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Table of Contents
Summary of Contents for G.T. Attuatori GTX Series
- Page 1 A T T U A T O R I MAINTENANCE MANUAL - PNEUMATIC ACTUATORS AND ACCESSORIES - ISO 9001:2000- Cert. n° 0210/3 RACK AND PINION PNEUMATIC ACTUATORS GTX SERIES Technical File Ref. n° 2003/01 II 2 GD c 110°C GT ATTUATORI S.r.l. REA MI 1558400 FAX (02) 90390368 V.le Europa 17 - 20090 Cusago...
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Page 2: Table Of Contents
UsermanING ISSUE .10 March 2004 PAG. 2 OF 20 INSTALLATION OPERATION & A T T U A T O R I MAINTENANCE MANUAL - PNEUMATIC ACTUATORS AND ACCESSORIES - TABLE OF CONTENT PAG. INTRODUCTION STORAGE OPERATIONAL CHARACTERISTICS ACTUATOR INSTALLATION DISASSEMBLY PROCEDURE RE-ASSEMBLY PROCEDURE SPRING CARTRIDGES INSTALLATION SOLENOID VALVES CHARACTERISTICS... - Page 3 - PNEUMATIC ACTUATORS AND ACCESSORIES - INTRODUCTION G.T. Attuatori offers a largest ranges of pneumatic rack and pinion actuators . Conceived for the installation on valves of control of the fluids, which ball valves, butterfly valves, etc.and have fed with pressed air.
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Page 4: Operational Characteristics
UsermanING ISSUE .10 March 2004 PAG. 4 OF 20 INSTALLATION OPERATION & A T T U A T O R I MAINTENANCE MANUAL - PNEUMATIC ACTUATORS AND ACCESSORIES - OPERATION CHARACTERISTICS actuators have simple operational characteristics: Port A is connected to the interior cavity between the pistons Port is connected to the end caps cavity dircting the air flow into the end caps area. - Page 5 UsermanING ISSUE .10 March 2004 PAG. 5 OF 20 INSTALLATION OPERATION & A T T U A T O R I MAINTENANCE MANUAL - PNEUMATIC ACTUATORS AND ACCESSORIES - TIPO Dimens. A Dimens. B Dimension B GTX. 52 GTX. 63 GTX.
- Page 6 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.
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Page 7: Disassembly Procedure
UsermanING ISSUE .10 March 2004 PAG. 7 OF 20 INSTALLATION OPERATION & A T T U A T O R I MAINTENANCE MANUAL - PNEUMATIC ACTUATORS AND ACCESSORIES - DISASSEMBLY PROCEDURE 5.1 - Disconnect all electrical and air supplies from the actuator. CAUTION: NEVER DISASSEMBLE AN ACTUATOR THAT IS UNDER PRESSURE... -
Page 8: Re-Assembly Procedure
UsermanING ISSUE .10 March 2004 PAG. 8 OF 20 INSTALLATION OPERATION & A T T U A T O R I MAINTENANCE MANUAL - PNEUMATIC ACTUATORS AND ACCESSORIES - 5.6 - Remove snap ring and delrin washer from top of pinion. Place the actuator between two blocks of wood so that the pinion is free to be removed through the bottom of the actuator body. - Page 9 UsermanING ISSUE .10 March 2004 PAG. 9 OF 20 INSTALLATION OPERATION & A T T U A T O R I MAINTENANCE MANUAL - PNEUMATIC ACTUATORS AND ACCESSORIES - Make sure that the pistons are symmetrically placed inside the cylinder body. In figure 4 we see that the pistons are at the mating position and are symmetrical.
- Page 10 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. CARTRIDGE SPRINGS INSTALLATION actuators have the unique ability to be field converted from DOUBLE ACTING to a SPRING RETURN actuator type, or viceversa, by changing very easily the spring configuration inside the end caps.
- Page 11 MAINTENANCE MANUAL - PNEUMATIC ACTUATORS AND ACCESSORIES - SOLENOID 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. FIGURE 7 The figure shows the front view of...
- Page 12 KV Factor = 9 In addition to these 4 standard models of solenoid valves, with nylon fiberglass filled coils, G.T. Attuatori offers also Epoxy Resin filled coils, for all standard voltages and also for other voltages, when request, always with same consumption data.
- Page 13 UsermanING ISSUE .10 March 2004 PAG. 13 OF 20 INSTALLATION OPERATION & A T T U A T O R I MAINTENANCE MANUAL - PNEUMATIC ACTUATORS AND ACCESSORIES - SV.2 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...
- Page 14 A T T U A T O R I MAINTENANCE MANUAL - PNEUMATIC ACTUATORS AND ACCESSORIES - G.T. Attuatori offers 2 standard models of Pneumatic command valves: 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...
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Page 15: Solenoid Valves Installation
MAINTENANCE MANUAL - PNEUMATIC ACTUATORS AND ACCESSORIES - G.T. Attuatori also offers coils for low consumption ( 1.4 W - 2 VA), for Explosion Proof ( EExm II T4 ) and Intrinsecally safe ( EEx ib IIc T6 ). For more information require G.T. Attuatori for proper literature. - Page 16 UsermanING ISSUE .10 March 2004 PAG. 16 OF 20 INSTALLATION OPERATION & A T T U A T O R I MAINTENANCE MANUAL - PNEUMATIC ACTUATORS AND ACCESSORIES - 10.0 FCW TO FCCW CONVERSION actuators typically comes from the factory as Fail Clock-wise ( FCW ) units, that is Mounting A, that allows infact FCW operation.
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Page 17: Actuator Sizing
UsermanING ISSUE .10 March 2004 PAG. 17 OF 20 INSTALLATION OPERATION & A T T U A T O R I MAINTENANCE MANUAL - PNEUMATIC ACTUATORS AND ACCESSORIES - 11.0 ACTUATOR SIZING Prior to actuate sizing it is important to get certain information. Key numbers to get are as follows: - Torque required to open the valve. -
Page 18: Actuators Cicle Times
UsermanING ISSUE .10 March 2004 PAG. 18 OF 20 INSTALLATION OPERATION & A T T U A T O R I MAINTENANCE MANUAL - PNEUMATIC ACTUATORS AND ACCESSORIES - EXAMPLE Given information: Valve Opening Torque ( VOT ) 85 Nm. Valve Closing Torque ( VCT ) 80 Nm. -
Page 19: Safety Instructions
UsermanING ISSUE .10 March 2004 PAG. 19 OF 20 INSTALLATION OPERATION & A T T U A T O R I MAINTENANCE MANUAL - PNEUMATIC ACTUATORS AND ACCESSORIES - 15.0 SAFETY INSTRUCTIONS 15.1 - Pneumatic actuators of GTX seris have breen planned and manufactured in accordance with ATEX 94/9/CE Standard, Group II, category 2 GD, with reference to the Norm UNI EN 1127-1 and UNI EN 13463-1 15.2 - Marking II 2 GD c T 110°... - Page 20 A T T U A T O R I MAINTENANCE MANUAL - PNEUMATIC ACTUATORS AND ACCESSORIES - WARRANTY The G.T. Attuatori guarantees own actuators for a period of one year starting from delivery date. The guarantee cover possible defects of the material manufactured by G.T. Attuatori.
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