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> pressure switch PM checklist
pressure switch PM checklist
1. Visual Inspection
Check for signs of physical damage or wear on the pressure switch.
Inspect wiring for frays, corrosion, or loose connections.
Ensure the mounting is secure and free of vibrations.
2. Functional Testing
Verify the pressure switch activates at the specified setpoint.
Monitor the switch for proper operation during pressure fluctuations.
Test the deactivation point to ensure it properly resets.
3. Calibration
Use a calibrated pressure gauge to verify the accuracy of the pressure readings.
Adjust the setpoint if necessary, following manufacturer specifications.
Document any changes made during calibration.
4. Electrical Checks
Measure the voltage across the switch contacts to ensure proper operation.
Inspect relay contacts for wear or pitting.
Test continuity of the switch in both open and closed positions.
5. Cleaning
Remove dust and debris from the pressure switch and surrounding area.
Clean electrical contacts if necessary, using appropriate tools and methods.
Ensure any filters are clean and unobstructed.
6. Documentation
Record all findings during the inspection and testing process.
Note any repairs or adjustments made.
Update maintenance logs and notify relevant personnel of completed PM tasks.
7. Final Checks
Double-check all connections and fasteners.
Ensure that the system is returned to normal operating conditions.
Perform a final operational test to confirm the pressure switch functions correctly.
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