GE Masoneilan VariPak 28001, Instruction Manual

Page 1: ...GE Oil Gas 28000Series Masoneilan VariPak Adjustable Cv Control Valves Instruction Manual...

Page 2: ...ENT AT THE SITE THESEINSTRUCTIONSDONOTPURPORTTOCOVERALLDETAILSORVARIATIONSINEQUIPMENT NOR TO PROVIDE FOR EVERY POSSIBLE CONTINGENCY TO BE MET IN CONNECTION WITH INSTALLATION OPERATION OR MAINTENANCE S...

Page 3: ...10 3 3 Pneumatic and Electrical Circuit 11 3 4 Limit Switches 11 4 Calibration 12 4 1 Piston Rod Clevis Adjustment 12 4 2 Plug Stem Adjustment 12 4 3 Limit Stop Adjustment 13 4 4 Varipak 28002 Cv Adju...

Page 4: ...T GE has a highly skilled After Sales Department to assist customers with start up maintenance and repair of valves and instruments Contact your nearest GE Sales Office or Representative or the After...

Page 5: ...ly be calibrated on site between 0 004 and 0 010 2 2 FLOW COEFFICIENT OF VARIPAK 28001 SINGLE LEVER AND 28002 ADJUSTABLE Cv VALVES 2 2 1 Plug seat ring combinations trim Eight plugs and five seat ring...

Page 6: ...ation The plug and seat ring combination can be changed very easily for trim Nos 1 to 9 inclusive Simply replace the following parts The plug and seat ring see figures 1 and 2 to select the combinatio...

Page 7: ...adjustment knob again firmly Note This operation entails moving lever No 2 either pneumatically by allowing air into the actuator or manually by pressing piston clevis 140b with a screwdriver or simi...

Page 8: ...w 116 Unhook spring 114 from spring clamp 115 2 5 1 VariPak 28001 single lever valve E Remove retainer clips 112b from pin 18 and remove the pin from lever 113 and plug clevis 104a Note This operation...

Page 9: ...over 110 using the two screws 109 If the valve is equipped with a handwheel refit the cover and turn the handwheel clockwise so that it engages in lever arm stop 122 Tighten cover screws 109 N Put the...

Page 10: ...ed stainless steel All the line bolting required for installation can be supplied by GE on request Figure 7 VariPak flanged connection Connected by 25 mm flanges machined to standards ISO PN 20 50 and...

Page 11: ...heck that the supply pressure is that indicated on the serial plate 7700P or 7700E positioners can be installed on both VariPak 28001 single lever and VariPak 28002 adjustable Cv valves Figure 11 Conn...

Page 12: ...st indicator Check that indicator 126 is correctly positioned Release air pressure 4 1 2 Adjusting the piston rod clevis on the Figure 14 Piston rod clevis 104b adjustment VariPak 28002 adjustable Cv...

Page 13: ...the air pressure after inserting the shim At this closing point where the plug is not tightened onto the seating the slides of levers No 1 and 2 should be perfectly parallel This characteristic makes...

Page 14: ...in the valve actuator or positioner before maintenance or disassembly 5 1 ACTUATOR DIAPHRAGM REMOVAL Figures 17 24 25 26 and 27 A Unscrew the two pressure connection nuts 138a and pull tubing 140 out...

Page 15: ...ely loosen locknut 117 and screw 116 Remove spring clamp 115 from lever No 2 and remove balance spring 114 from the positioner E Remove the retainer clip 112b from each of the two pins 184 and disenga...

Page 16: ...t ring 3e until the stem slides smoothly Fit spacer 5 turning it so that one of its holes is aligned with safety pin 11 hole in the valve body Note For valves with a maximum Cv less than 0 10 check th...

Page 17: ...ever No 2 where spring clamp 115 is fitted is located above and in line with balance spring 114 I Fit adjustment pin 23 in the slide of lever No 1 and screw adjustment knob 24 on its threaded end Inse...

Page 18: ...ved while the valve is still pressurized The internal parts of the valve cannot be removed unless the safety pin is removed first Remove the two packing flange nuts 8b and back off the two actuator br...

Page 19: ...and its three O rings spring 158 and manifold block 144 Tighten the screws 141a refit tubing 140 and tighten pressure connection nuts 138a Note The ports in gasket 146 must be aligned with those in t...

Page 20: ...parts Otherwise simply check that parts are in perfect condition before refitting Caution Handle the shims carefully 145 C If the parts mentioned above have been removed proceed as follows Fit the O...

Page 21: ...1 4 Washer c 1 Plug stem Cv max 1 2 0 6 122 1 Lever arm stop 162 4 Nut d 1 Plug stemCv max 0 25 0 10 123 1 Cover plug 163 4 Wire 13 a 1 Body Cv max 3 8 124 1 Pivot pin No 4 164 1 Terminal 13 b 1 Body...

Page 22: ...22 GE Oil Gas 180 181 Figure 25 Cross section of the VariPak 28001 single lever actuator and the 7700E positioner Figure 26 Partial cross section of VariPak 28001 single lever air to open valve...

Page 23: ...24 GE Oil Gas Figure 27 Partial cross section of VariPak 28002 adjustable Cv air to open valve Figure 29 Coupling detail of levers No 1 and 2 Figure 28 Partial top view 180 181...

Page 24: ...tered trademarks or trademarks of their respective owners General Electric Company All rights reserved Visit our web site www fr eps com E P S FRANCE 24 bis rue de Picpus 75012 PARIS Tel 33 0 9 83 01...