DeZurik PMV P36C, Руководство пользователя

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DeZURIK
PMV P36C and P41C Positioners
used with DeZURIK Pneumatic Actuators
August 2012 Page 17 D10327
Troubleshooting
Condition Possible Cause Corrective Action
Signal change has no effect on
actuator position.
Indicator is loose. Check indicator and screw.
Re-position indicator and
tighten.
Air supply is not adequate. Check air supply to positioner,
and tubing to actuator.
Input signal is fluctuating. Check input signal. Repair or
replace wiring.
Diaphragm is damaged. Check diaphragm for damage or
leakage. Repair or replace
diaphragm.
Pilot valve is dirty or worn. Check pilot valve function. Clean
or replace pilot valve.
Cam is incorrectly positioned. Check cam for correct setting.
Signal change results in actuator
running to end position
Positioner is loose. Check coupling between
positioner and actuator.
Cam is loose. Check cam position and locking
screw.
Input signal is fluctuating. Check input signal. Repair or
replace wiring.
Inaccurate Positioning
Pilot valve is dirty or worn. Check pilot valve function. Clean
or replace pilot valve.
Diaphragm is damaged. Check diaphragm; repair or
replace diaphragm.
Input signal is fluctuating. Check input signal. Repair or
replace wiring.
Actuator is not sized correctly. Check sizing. Replace with
correct actuator.
Valve torque is increased from
wear or damage.
Rebuild or replace valve.