DeZurik G-SERIES Manual - Halaman 16

Jelajahi secara online atau unduh pdf Manual untuk Pengontrol DeZurik G-SERIES. DeZurik G-SERIES 17 halaman. Lift, turn and reseat used on ptw & pfw tapered plug valves
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Halaman Cetak
DeZurik G-SERIES Manual
DeZURIK

Troubleshooting

Condition
Actuator closes to
wrong position.
Actuator opens to
wrong position.
Actuator will not
fully operate valve.
High operating
torque.
D10456
Possible Cause
Closed position stop is set
incorrectly.
Pointer is installed incorrectly.
Open position stop is set
incorrectly.
Pointer is installed incorrectly.
Pipeline obstruction in valve is
preventing closure.
Misalignment of adaptor.
Misalignment of ENK extension.
Bent actuator input shaft.
Corrective Action
Adjust closed position stop. See
STOP ADJUSTMENTS section.
Rotate pointer to correct
Adjust closed position stop. See
STOP ADJUSTMENTS section.
Rotate pointer to correct
Remove obstruction.
Check valve-adaptor actuator
alignment and adjust.
Check valve-extension-actuator
alignment and adjust.
Replace actuator.
Page 16
position.
position.
August 2012