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6 | =GE Oil & Gas
Air to Close / Direct Acting Positioner ............................................................................................... 50
Air to Close / Reverse Acting Positioner ........................................................................................... 50
Field Mounting and Complete Calibration, Rotary Actuators................................................. 51
Air to Open / Direct Acting Positioner ............................................................................................... 51
Air to Open / Reverse Acting Positioner ........................................................................................... 51
Air to Close / Direct Acting Positioner ............................................................................................... 52
Air to Close / Reverse Acting Positioner ........................................................................................... 53
Field Mounting and Complete Calibration Reciprocating Valves using 87/88 .............. 54
Air to Open / Direct Acting Positioner ............................................................................................... 54
Air to Open / Reverse Acting Positioner (4700P/4800P only) ................................................. 54
Air to Close / Direct Acting Positioner ............................................................................................... 55
Air to Close/Reverse Acting Positioner (4700P/4800P only) ................................................... 56
Damping Adjustment ............................................................................................................................... 56
Positioner Action Change (4700P/4800P Only) ............................................................................. 57
From Air to Open / Direct to Air to Open/Reverse ...................................................................... 57
From Air to Open / Reverse to Air to Open/Direct ...................................................................... 57
From Air to Close / Direct to Air to Close/Reverse ...................................................................... 57
From Air to Close / Reverse to Air to Close/Direct ...................................................................... 57
Maintenance.................................................................................................................................................. 58
Pilot .................................................................................................................................................................... 58
Disassembly .................................................................................................................................................. 58
Reassembly ................................................................................................................................................... 58
Body................................................................................................................................................................... 59
Disassembly .................................................................................................................................................. 59
Reassembly ................................................................................................................................................... 60
Diaphragm .................................................................................................................................................... 60
I/P Module ...................................................................................................................................................... 60
Bypass Valve Option (4700P Only)....................................................................................................... 61
Assembly to Positioner ............................................................................................................................ 61
Disassembly .................................................................................................................................................. 62
Troubleshooting........................................................................................................................................... 63
Split Range Operation - 4700P/4800P .............................................................................................. 64
Cam Lobe Selection and Lever Arm Orientation.......................................................................... 65
Parts Reference 4700P/4800P 3-15 and 6-30 Range................................................................ 68
Parts Reference 4700E/4800E .............................................................................................................. 71
Parts Reference............................................................................................................................................ 73
Specification Data....................................................................................................................................... 75
Specifications ............................................................................................ 75
Drawings .................................................................................................... 77
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