Section 10: Troubleshooting; Mechanical Problems - Emerson EL-O-Matic F-Series Installation, Operation And Maintenance Manual

Section 10: Troubleshooting

September 2017
Section: 10
10.1

Mechanical Problems

Problem
Feedback position and
actual position are not
the same.
Valve is in "Closed"
position, actuator is in
"Open" position and will
not move anymore.
Valve does not reach the
completely "Closed" or
"Open" position.
Actuator rotates, valve
does not.
Actuator does not
rotate or does not rotate
smoothly.
Limit stop screws cannot
be turned out anymore.
46
Installation, Operation and Maintenance Manual
Troubleshooting
Possible error
Actuator and valve are
mounted 90° rotated in
relation to each other.
Limit stop screws are not
set correctly.
Insert is not mounted
properly.
Pressure to low.
Sizing is wrong.
Pinion is mounted in the
wrong position.
No coupling between
actuator shaft and valve
spindle.
Broken gearing on
pistons or pinion.
Spring or Spring
cartridge is broken.
Limit stop screws is
bend.
DOC.IOM.EF.EN Rev. 7
Solution
Remove actuator from
valve. Check assembly code
of actuator. Put both valve
and actuator in "Closed"
position. Mount actuator on
valve.
Readjust the limit stop
screws.
Mount the insert in the right
position. Remark: Rotate
insert to one cam = 22.5°.
Apply pressure as per sizing.
Check valve torque data
with actuator torque data.
Re assemble actuator.
Install a coupling between
actuator shaft and valve
spindle.
Contact nearest EL-O-Matic
representative to replace
actuator.
Contact nearest EL-O-Matic
representative to replace
actuator.
Contact nearest EL-O-Matic
representative to replace
actuator.
Where to find
Section 4
Section 5
Section 4.5
Section 9
Section 4.5
Appendix A.
Troubleshooting