Flowserve Logix MD+ ValveSight - Manual (Page 40)

ValveSight™ Diagnostics DTM Manual for Logix MD+ Positioner with HART®
FCD- LGENSF0014-00
© Flowserve Corporation
40
the valve stem.
•
Possible Solutions: Check for packing leak. Tighten or replace the
valve packing.
Valve Can't Open
•
Definition: Pressure has been applied (or removed) to open the valve,
but the valve is not opening.
•
Implications: This may be caused by excessive friction.
•
Possible Solutions: Verify adequate supply pressure is applied. Verify
the feedback linkage is connected. View the friction trends if
available. Consider the following: Clear any external or internal
mechanical obstruction, loosen the packing, clean the stem, repair or
replace the actuator, repair the valve if galling is suspected.
Valve Can't Shut
•
Definition: Pressure has been removed (or applied) to close the valve,
but the valve is not closing.
•
Implications: This may be caused by excessive friction.
•
Possible Solutions: Verify adequate supply pressure is applied. Verify
the feedback linkage is connected. View the friction trends if
available. Consider the following: Clear any external or internal
mechanical obstruction, loosen the packing, clean the stem, repair or
replace the actuator, repair the valve if galling is suspected.
Action Buttons
The Apply button will save changes to the connected device.
The Retrieve button will retrieve the latest information from the device.
The Print Report button will print a report to default printer (see example below).
Information includes:
•
Information about the connected device
•
The active status of the alarms, warnings and alerts.
•
The masked status.
•
The current value (where applicable).
•
The value threshold (where applicable).
NOTE: It is possible to print the report to save to a PDF file. Instructions:
1. Download and install the free version of PDFCreator.
2. Install the PDFCreator
3. Set PDFCreator as the default Printer