What to do if there is a short in Dresser Valve Positioners force coil?
If the Dresser Valve Positioners' force coil has a short, replace it. Use an ohmmeter to check the coil's resistance; it should show very high resistance (practically infinite). If the ohmmeter indicates another value, replace the coil.
How to fix force coil resistance if it is not correct in Dresser Masoneilan 8013?
If the force coil resistance of Dresser Valve Positioners is not correct, replace the force coil.
What to do if Dresser Masoneilan 8013 are operating faulty?
To address faulty operation of Dresser Valve Positioners, check the air system: 1. Exert sufficient force on the flapper to cover the nozzle. The valve stem should travel its full stroke. 2. If the response differs from the above steps, push the cleanout plunger of the metering orifice and inspect for a plugged nozzle. Check if the metering orifice body is properly seated in the relay. If the issue continues, disassemble and clean the relay.
General| Brand | Dresser |
|---|---|
| Model | Masoneilan 8013 Series |
| Category | Valve Positioners |
| Language | English |
Explains the positioner as an electropneumatic force-balance device for valve stem positioning.
Details how an increasing output signal affects the beam and nozzle pressure for direct action.
Explains how an increasing input signal decreases output pressure for reverse action.
Outlines the steps and considerations for reversing the positioner's action.
Describes connecting positioners in series to operate two split-ranging valves.
Explains connecting positioners in parallel for split-ranging with two valves.
Instructions for checking nozzle stamping and relating it to valve size and supply pressure.
Explains how spring position relates to direct or reverse action of the positioner.
Provides steps to change the force balance spring position for different actions.
Details the process of assembling the positioner case onto the valve yoke.
Guides on selecting and mounting the correct cam lobe for flow characteristics.
Covers connections for supply and output pneumatic signals to the actuator.
Refers to supplementary instructions for electrical connections and characteristics.
Outlines prerequisites and initial steps for calibrating the positioner.
Specific calibration steps for an air-to-open valve configuration.
Specific calibration steps for an air-to-close valve configuration.
Combined calibration steps for both valve configurations.
Describes the metering tube and its clean-out plunger for nozzle air supply.
Step-by-step instructions for taking apart the positioner's relay component.
Instructions for correctly reassembling the positioner's relay component.
Guidance on cleaning the nozzle by removing the flapper and cleaning the orifice.
Details on how to replace damaged flexure strips and align the beam.
Steps for removing and replacing the positioner's force coil.
Instructions for aligning the beam using rods, wedges, and tightening screws.
Procedures for replacing the terminal board and coil for new signal ranges.
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