Flowserve LPC Compact Actuator Series - Manual (Page 15)

5
Troubleshooting
To prevent the actuator from not proper functioning or low performance, first ensure that the installation and the adjust-
ment operations are carried out completely in accordance with this manual.
a WARNING: During the activities of identifying faults, it is very important to observe all the regulations and
instructions about safety. Read all the paragraphs of this manual concerning maintenance before opening for
inspection or starting to repair any actuator components. If in doubt, choose SAFETY FIRST.
You can identify the causes of possible malfunctions with the help of the following table (“troubleshooting table”). If a
malfunction cannot be identified and eliminated using the table, Flowserve Service Department should be contacted.
Troubleshooting Table
Problem
Possible cause Solution
The actuator does not move.
Actuator has not been properly installed.
Check that all the pneumatic connections and
that all the pneumatic components have been
installed correctly, and are in accordance with the
actuator operating mode.
Check that the actuator is properly connected to
the valve and that there aren’t problems in the
mounting kit.
Supply pressure problems.
Check that the actuator is properly connected to
the valve and that there aren’t problems in the
mounting kit.
Problems in the control panel (if present).
Check the correct functioning of the control
panel. In particular, check all the pneumatic and
electric connections.
Check the correct level of supply voltage for
solenoid valves and other electrical/electronic
components.
The valve is blocked.
Check that valve is free to rotate. If necessary
disassemble the actuator from the valve.
Exhaust port(s) obstructed.
Screw cap(s) must be disengaged. Ensure vent
ports are free. If not, clean them of any obstruc-
tions and clean the dust excluders, if present.
Problems with lubricants.
Ensure that the actuator is properly lubricated,
and that there is no solidified grease among
sliding parts or rotating parts. If actuator
lubrication is inadequate or improper, apply a
uniform lubricant layer. Follow the instructions
for cylinder maintenance (par. 4.2). Consult
Flowserve for proper oil and grease to be used.
15
LPC Compact Actuator Series FCD LFENIM0002-00-AQ 07/14
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