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Operation and Maintenance Manual

GVO-CLP-SR.IOM.1003 Rev. 0

March 2016

Bettis GVO-C Series

GVO-CLP-SR Pneumatic Actuators

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Summary of Contents for GVO-C Series

Page 1: ...Operation and Maintenance Manual GVO CLP SR IOM 1003 Rev 0 March 2016 Bettis GVO C Series GVO CLP SR Pneumatic Actuators ...

Page 2: ......

Page 3: ...ents Section 1 Introduction 1 Section 2 Operation 2 Section 3 Maintenance 3 1 Inspection of Gland and Barrel Seals 3 3 2 Inspection of Piston Seals 3 Section 4 Seal Replacement 4 1 Fail Close Actuators 4 4 2 Fail Open Actuators 5 4 3 Reassembling the Actuator 6 Section 5 Seal Kit Selection 8 Section 6 Storage Condition 9 ...

Page 4: ...is identified with a unique serial number for reference when ordering replacement parts The actuators have a special feature they are single acting spring return to provide Fail Close or Fail Open action in case of loss of air pressure or electrical power The springs are located in a factory sealed canister easy to remove and provide high safety standards during the operation and maintenance Each ...

Page 5: ...h seal materials 2 Care must be exercised to ensure that operating pressure does not exceed the maximum rating of 150 psi 3 Unless equipped with optional metallic rod scraper and rod boot the cylinder should be operated in an environment free of excessive dust and abrasive particles 4 Standard operating temperature is between 30 C and 120 C 25 F and 250 F unless specially equipped with high or low...

Page 6: ...of the use of certain hazardous substances in electrical and electronic equipment RoHS 2 3 1 Inspection of Gland and Barrel Seals 1 Identify if the cylinder is a Fail Close or Fail Open type The Fail Close actuator has the pressure port at the rod end cap the Fail Open actuator has the pressure port located on the canister end cap 2 Connect pressure line at the pressure port of the cylinder 3 Appl...

Page 7: ...ne in all safety without any special precaution The spring is contained in a factory sealed canister 2 Remove the canister from the cylinder 3 Unscrew the tie rod nuts and remove the tie rods 4 Remove the cylinder rod end cap 5 Pull the piston and piston rod assembly from barrel Take care not to damage the rod and the barrel Do not disassemble the rod from the piston replacement parts 6 Unscrew th...

Page 8: ... canister from the cylinder 5 Unscrew the tie rod nuts and remove the tie rods 6 Remove the cylinder head rod end cap 7 Pull the piston and piston rod assembly from barrel Take care not to damage the rod and the barrel Do not disassemble the rod from the piston 8 Unscrew the gland bushing from rod end cap 9 Remove seals from piston and gland bushing noting orientation of seal edges The U cups lips...

Page 9: ...in gland bushing 8 Push gland bushing pilot diameter into actuator head Tap with a rubber mallet if necessary to overcome resistance caused by O ring 9 Thread the bushing flange flush with actuator head Tighten until snug 10 Install cap on barrel Ensure that barrel seal O ring is properly seated in groove 11 Slide actuator head over the piston rod and seat against barrel end Make sure that bushing...

Page 10: ...Torquing Sequence Table 1 Torque Values Cylinder Bore Inches Number of Tie Rods Diameter of Tie Rods Inches Torque lb ft No Lubrication 4 4 3 8 15 5 4 1 2 25 6 4 1 2 30 7 4 5 8 35 8 4 5 8 60 10 4 3 4 90 12 4 3 4 125 14 4 7 8 150 16 6 7 8 150 18 6 7 8 180 20 10 7 8 150 22 10 7 8 180 24 10 7 8 200 26 12 7 8 150 28 14 7 8 150 30 14 7 8 200 ...

Page 11: ...ion Section 5 Seal Kit Selection Use genuine parts only to ensure proper fit and function for continuous trouble free operation In order to supply you with the appropriate seal kit for your actuator we require the part number and the serial number shown on the identification tag located on the barrel of the actuator ...

Page 12: ...lation for a period of time following storage conditions are required 1 Actuators must be stored indoors 2 Actuators must be stored in vertical position to prevent packing deformation 3 Ambient storage temperature 20 C to 40 C 4 F to 104 F 4 Humidity maximum 60 5 Do not remove protective cap plugs or protective covers 6 Apply every 6 months a thin layer of metal protective coating on all machined ...

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Page 14: ...ongmeadow Business Estate East P O Box 6908 Greenstone 1616 Modderfontein Extension 5 South Africa T 27 11 451 3700 EUROPE Holland Fasor 6 Székesfehérvár 8000 Hungary T 36 22 53 09 50 Strada Biffi 165 29017 Fiorenzuola d Arda PC Italy T 39 0523 944 411 www emerson com bettis 2018 Emerson All rights reserved The Emerson logo is a trademark and service mark of Emerson Electric Co BettisTM is a mark ...

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