https://mhlimon.com/tags/actuator/Recent content in Actuator on MH Limonhttps://mhlimon.com/images/og-image.pnghttps://mhlimon.com/images/og-image.pngHugoenMon, 19 Oct 2026 15:43:25 +0600https://mhlimon.com/notes/field-notes/2026-10-04-mov-troubleshooting/Sun, 04 Oct 2026 00:00:00 +0000https://mhlimon.com/notes/field-notes/2026-10-04-mov-troubleshooting/<p>A motor-operated valve was repeatedly tripping during operation from a particular system condition.</p> <p>The actuator torque setting had already been increased, but the problem returned.</p> <p>Initial hypotheses included:</p> <ul> <li>Valve mechanical restriction</li> <li>Damaged valve internals</li> <li>Insufficient actuator torque</li> <li>Excessive differential pressure</li> <li>Incorrect limit-switch setting</li> <li>Faulty limit-switch mechanism</li> <li>Actuator or valve coupling problem</li> </ul> <p>The valve was dismantled and inspected. The suspected internal damage was not found.</p> <p>The investigation then moved toward the actuator and limit-switch mechanism.</p>