GE Masoneilan 4700P Maintenance Manual

Also see for Masoneilan 4700E: Instruction manual

Contents

© 2015 General Electric Company. All rights reserved .60 | =GE Oil & GasReassemblySee Figure 19 on page 68 or Figure 20 on page 71.1. Position the diaphragm assembly (9) on the case sub-assembly. If positioner is6-30 psi range, install reducer plate per Figure 19. Secure the body subassemblyto the case subassembly with cap screws (10). Tighten evenly to 60 inch-lbs oftorque.2. Replace spring (5), lever S/A (3), washer (16), and retaining ring (17).3. On 4700E/4800E, carefully place module in position against body making surethat O-rings do not come out of grooves. Secure to body using screws (21).4. Install the pilot assembly (11) and pressure gauges.5. Install the positioner on the actuator. Reconnect air lines, electrical leads if 4700E/4800E, and coupling linkage if mounted on reciprocating valve.6. Assemble cam to shaft per procedure under “Cam Lobe Change” on page 49.Recalibrate per appropriate Valve Action/Positioner Action calibration section.DiaphragmIf the diaphragm has deteriorated, replace the diaphragm assembly. This requires separation ofthe body and case subassemblies as outlined under “Disassembly” on page 59.I/P ModuleReplacement of the I/P module requires removal of electrical connections, including conduit ifused. Remove positioner from valve if module mounting screws are not accessible. Remove andreplace module as outlined under “Disassembly” on page 59.NOTE There are no adjustments in the I/P module.