Installation & Operation Manual
ECON actuator Fig. 7917EX, type ELSA50 – 260
www.eriks.com
Rev. 0 – April 10
th
, 2019
12
a. The spring return actuator is shipped in spring return position (spring unloaded).
Standard actuators will be supplied with a clockwise spring return action for closing the
valve in case power outage occurs. However actuators can optionally be supplied with
a counter-clockwise spring return action for opening the valve.
b. Make sure the valve is in the correct FAIL POSIITION before mounting the actuator to
it. Refer to illustration above.
c. Remove all of the valve manual operation parts, such as the mechanical open/close
stoppers in order to prevent interference with the electric operation.
Do not remove the packing gland or other parts necessary for safe operation
of the valve.
d. Check again if the valve and actuator are in the same position (fully-open or fully-
closed).
e. Once mounted together, either directly or with a mounting kit, ensure that they are
properly secured together by fastening all fasteners by using corrects tools.
f. Remove the conduit entry plug to relieve the pressure inside the actuator for the ease
of the top cover removal and gently remove the cover.
The power supply must be switched off before removing the cover.
g. A label with the wiring diagram is inside the cover of the actuator.
h. Supply power to the actuator.
Care must be taken at all times as there are live circuits present which may
cause an electrical shock.
i. Re-calibration may be required for the end positions, refer to section 4.4 for further
instructions.
j. Assemble the cover and secure the cover bolts firmly after setting.
Refer to 3.7 for installation and check if the flame path joint between the cover
and base is clean and without obstacles.
Please ensure that the O-ring seal is in good condition prior to cover
installation.
The explosion proof enclosures are marked with a QA-code on both of the
connection flanges. Please verify that QA-code inside the cover is identical to
the one on the connection flanges-during installation. Covers of these
actuators are not interchangeable!