Installation & Operation Manual
ECON actuator Fig. 7917EX, type ELSA50 – 260
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Rev. 0 – April 10
th
, 2019
16
4.4.2 Adjustment procedure for spring-return actuator in the fail-open position upon
loss of supply voltage
Adjust FULLY-OPEN (spring released) stop point. Follow the steps below:
a.
Turn the power off and loosen the end stop protection cover using a 5mm hex key.
b.
Loosen the hex locknut of the End Stop using a 17mm hex wrench. Hold the locknut
and turn the End Stop using a 10mm hex wrench to adjust the end position.
c.
Turn the buffer or End Stop to adjust the fully-open stop point.
ELSA50: One turn = 2.3 degrees
ELSA130 to ELSA260: One turn = 1.4 degrees
d.
Once completed, tighten the hex nut, replace cover and tighten the bolts.
If the buffer or End Stop is adjusted, TC2 must be reset in accordance with the
buffer or the End Stop
e.
Loosen the M3 cap screw of cam TC2 with a 2.5mm hex key.
f.
Rotate the cam TC2 counter-clockwise until a light click is heard, and then slowly
rotate the cam TC2 clockwise until a light click is heard.
g.
Tighten the cap bolt of cam TC2.
Adjust FULLY-CLOSED (spring compressed) stop point. Follow the steps below:
a.
Apply power to drive the actuator to its fully-closed (spring compressed) position. If the
Spring released 90°
Clockwise (CW)
Counter-clockwise (CCW)
Spring compressed 0°
Desired Position
Original Position
ELSA50
ELSA130, ELSA200 and ELSA260