DeZurik PMV P36C Podręcznik - Strona 17
Przeglądaj online lub pobierz pdf Podręcznik dla Pozycjonery zaworów DeZurik PMV P36C. DeZurik PMV P36C 19 stron. For pneumatic actuators
Drukuj stronęTroubleshooting
Condition
Signal change has no effect on
actuator position.
Signal change results in actuator
running to end position
Inaccurate Positioning
August 2012
PMV P36C and P41C Positioners
used with DeZURIK Pneumatic Actuators
Possible Cause
Indicator is loose.
Air supply is not adequate.
Input signal is fluctuating.
Diaphragm is damaged.
Pilot valve is dirty or worn.
Cam is incorrectly positioned.
Positioner is loose.
Cam is loose.
Input signal is fluctuating.
Pilot valve is dirty or worn.
Diaphragm is damaged.
Input signal is fluctuating.
Actuator is not sized correctly.
Valve torque is increased from
wear or damage.
Page 17
DeZURIK
Corrective Action
Check indicator and screw.
Re-position indicator and
tighten.
Check air supply to positioner,
and tubing to actuator.
Check input signal. Repair or
replace wiring.
Check diaphragm for damage or
leakage. Repair or replace
diaphragm.
Check pilot valve function. Clean
or replace pilot valve.
Check cam for correct setting.
Check coupling between
positioner and actuator.
Check cam position and locking
screw.
Check input signal. Repair or
replace wiring.
Check pilot valve function. Clean
or replace pilot valve.
Check diaphragm; repair or
replace diaphragm.
Check input signal. Repair or
replace wiring.
Check sizing. Replace with
correct actuator.
Rebuild or replace valve.
D10327