Installation & Operation Manual
ECON actuator Fig. 7917EX, type ELSA50 – 260
www.eriks.com
Rev. 0 – April 10
th
, 2019
25
6. Troubleshooting
Floating Controller
Motor does not operate and overheats.
Possible problems
Solution
a.
The seating torque of valve increased
caused by oxidized seals and has resulted
in a torque overload on actuator.
b.
Jammed pipe or valve seat stuck.
c.
Motor drive stem bearing damaged.
d.
The limit switch for fully-closed does not
trip (with manual override).
e.
The limit switch for fully-closed does not
trip (without manual override).
a.
Manually operate or replace the valve.
b.
Check if any blockage or obstacle in pipe.
c.
Replace them.
d.
Operate the actuator manually to fully-
closed position and confirm if the limit
switch trips.
e.
Check if a torque overload caused by the
valve.
The actuator functions normally but motor is hot.
Possible problems
Solution
a.
Actuator operates too frequently and
exceeded duty cycle rating.
b.
A torque overload caused by the valve.
c.
Supply voltage was too high or too low,
out the tolerance of deviation.
d.
Wrong power supply.
a.
Adjust the system bandwidth or reduce
the frequency of operation.
b.
This problem happened frequently after
valve operating for a long time. It is
suggested to replace the valve.
c.
Check the supply circuit.
d.
Check the power supply.
The valve does not operate no matter under either electrical operation or manual
operation.
Possible problems
Solution
a.
The actuator is not properly installed onto
the valve.
b.
The torque of valve is larger than the
torque of the actuator.
c.
The set screw of the cam is loosened.
d.
The OPEN and CLOSE end stop points of
actuator are not aligned with the valve.
a.
Contact the technical department to solve
the problem.
b.
Replace with a new valve or a larger size
actuator.
c.
Readjust the mechanical stops and limit
switches, please refer to section 4.4.
d.
Separate the actuator from the valve and
reinstall to ensure the OPEN and CLOSE
stop points are aligned properly.