Comeval Diaval AF Series Installation, Operating And Maintenance Manual Download

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©COMEV

VE SYSTEMS

Technical Dept. Ref. IOM - PNEUMA

TIC

ACTUA

TORS

AF SERIES - Ed.20/1

Comeval V

alve Systems reserves the right to alter any technical data contained in this Manual without prior notice. Regularly updated data on www

.comeval.es

COLUMNLESS PNEUMATIC ACTUATORS AF SERIES

FOR DIAPHRAGM VALVES

Page 1

INSTALLATION, OPERATING

AND MAINTENANCE MANUAL

COLUMNLESS PNEUMATIC ACTUATORS

FOR DIAPHRAGM VALVES AF SERIES

Contents

Diaval® AF Series

1. GENERAL INFORMATION ON THE MANUAL............2

2. NOTES ON POSSIBLE DANGERS .............................2

2.1

Significance of symbols

..............................................2

2.2 Explanatory notes on safety information .....................2

3. PRESERVATION, STORAGE, HANDLING &

TRANSPORT ......................................................................2

4. DESCRIPTION ..............................................................2

4.1 General Description / Operating principles .................2

4.2 Principle of Operation .................................................3

4.3 Area of Application ......................................................3

4.4 Technical data – remarks ............................................3

4.5

Marking/labelling

.........................................................4

5. INSTALLATION ............................................................4

5.1 General remarks on installation ..................................4

5.2

Assembly of the actuator onto de valve:

.....................4

5.3

Assembling additional modules

..................................4

5.4 Requirements at the place of installation ....................4

6. COMMISSIONING & OPERATION ...............................5

7. CARE AND MAINTENANCE ........................................5

8. TROUBLESHOOTING ..................................................7

9. TROUBLESHOOTING TABLE .....................................7

10. DISMANTLING THE ACTUATOR ..............................8

11. GOODS RETURN & DISPOSAL ...............................8

12. WARRANTY / GUARANTEE......................................8

13. PARTS LIST ...............................................................9

14. ANNEXES .................................................................10

14.1 Declaration of Conformity - DC09 ...........................10

14.2 Data Sheet - DS09 ..................................................10

Double Acting

Single Acting

Spring closes

Single Acting

Spring opens

Summary of Contents for Diaval AF Series

Page 1: ... on safety information 2 3 PRESERVATION STORAGE HANDLING TRANSPORT 2 4 DESCRIPTION 2 4 1 General Description Operating principles 2 4 2 Principle of Operation 3 4 3 Area of Application 3 4 4 Technical data remarks 3 4 5 Marking labelling 4 5 INSTALLATION 4 5 1 General remarks on installation 4 5 2 Assembly of the actuator onto de valve 4 5 3 Assembling additional modules 4 5 4 Requirements at the ...

Page 2: ... observed and complied with for safely using the product 3 PRESERVATION STORAGE HANDLING TRANSPORT ATTENTION Protect against external force impacts vibrations etc Allow only skilled personnel suitable handling and lifting equipment must be used See Data Sheet for weights or consult manufacturer Always use suitable protection equipment and minimize the use of human body force at any step to avoid i...

Page 3: ...ce the air push the diaphragm downwards and this pull the stem extension with it forcing the valve to close Double acting air inlet air inlet When the upper chamber s air pressure is enough to allow the valve to close the air pushes the diaphragm downwards and so it actuates directly on the valve s stem forcing the valve to close When the air pressure in the lower chamber is enough to allow the va...

Page 4: ...nd in rest position installed on the pipe line When the valve is operated there is a crushing hazard between diaphragm and seat Ensure the valve is not under operation in case hands are introduced inside the valve To avoid unnecessary stress and risk of valve break consider the weight and the relative position of actuator to evaluate its support Make sure that the actuator is suitable for service ...

Page 5: ...ly as well as actuator controls and valve 7 CARE AND MAINTENANCE The operator must define maintenance and maintenance intervals to meet requirements Check for body and air supply connections tightness and valve smooth operation without additional tools ATTENTION Before any maintenance task make sure previous chapters are thoroughly followed In case of actuator malfunction and cap screws loosened t...

Page 6: ...ove the between chambers bolts 9 Remove the upper chamber 10 Remove the retaining washers and the stem extension 11 Remove the diaphragm upper plate the diaphragm and the bottom suport plate 12 Remove the bonnet 13 Clean the components of the actuator perfectly 14 Inspect the components of the actuator for wear or damage and replace what is necessary Normally open actuator assembly after maintenan...

Page 7: ...ing and replace if needed Refer to chapter 7 Some part stuck inside the valve Dismount the valve and check inside Refer to chapter 7 Actuator unit moves too slowly or not reaching limit position Air supply pressure too low Recheck air supply pressure on actuator nameplate Increase only the needful without exceeding max value Connection opposite to air supply connection partially plugged or restric...

Page 8: ...ially polluting or harmful residues or any mechanical damage that could present a health safety or environmental risk as enforced by EU Health Safety and Environment Law including the Safety Data Sheet of the substances identified as potentially hazardous Actuators are recyclable and not expected hazard to the environment with the exception of soft parts PTFE and rubber compounds that should be di...

Page 9: ...10 11 16 14 15 22 13 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 20 Single Acting spring to open 1 5 9 18 6 8 2 13 16 14 15 22 11 10 7 No Description 1 Handwheel 2 Stem extension 3 Nut 4 Opening limit rod 5 Spring chamber bolts 6 Spring plate 7 Spring chamber 8 Spring 9 Visual indicator 10 Upper chamber 11 Chambers union bolts 12 Retainer bolt 13 Retainer washers 14 Diaphragm upper plate 15 Diaphragm 1...

Page 10: ...DIAPHRAGM VALVES Page 10 Double Acting 16 14 15 14 19 10 11 10 11 19 14 15 16 No Description 10 Upper chamber 11 Chambers union bolts 14 Diaphragm upper plate 15 Diaphragm 16 Lower chamber 19 Stem s locking nut 14 ANNEXES 14 1 Declaration of Conformity DC09 14 2 Data Sheet DS09 COMEVAL VALVE SYSTEMS S L y CIA Soc Comanditaria Les Rotes 15 46540 El Puig Valencia España Phone 34 961 479 011 Fax 34 9...

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Summary of Contents for Diaval AF Series

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