Econ ELSA130, Инструкция по установке и эксплуатации, Страница: 14 / 30

Installation & Operation Manual
ECON actuator Fig. 7917EX, type ELSA50 – 260 www.eriks.com
Rev. 0 – April 10
th
, 2019 13
4.3 Wiring Instructions
Turn off the power before making the electrical connection!

There are grounding devices both inside and outside of the actuator (green screws).
The grounding wires should be connected properly.

Both conduit entries are plugged with metal plugs according to the specification as
mentioned below.
ELSA50 to ELSA260: 1/2” NPT, 3/4” NPT, M20 x 1.5 or M25 x 1.5.
Use correct glands with threaded ends that match the inside threads of the
actuator in order to prevent dame to these threads.

Verify the supply power is in accordance with the data on the nameplate to prevent
a short circuit and an electrical shock.
Do not apply power to the actuator before wiring, otherwise it can cause an
electrical shock or damage the components of the actuator.

After wiring, please tighten the conduit entries with suitable cable glands and cover
properly. Unused conduit entries have to be sealed with metal plugs to reach the
explosion-proof function. Please refer to section 1.2.2.
4.4 Actuator Set-up
If the actuator is equipped with a manual override, rotate the handwheel to return
the actuator to its fully unloaded spring position before the power is supplied.
Securely tighten the conduit fittings to ensure the enclosure protection rating.
The spring return actuator provides fail-safe positioning and the end stop position of the
spring return action is determined by either a buffer or mechanical stop (On/Off by the buffer,
floating or modulating limited by mechanical stop). When the actuator is motorized, the end
position is determined by limit switches.
The actuator has been set and calibrated at the factory. Most products will not require
recalibration of these settings. However these are general settings. After the valve and
actuator are bolted together, apply power to drive the actuator to its fully-open (spring
compressed for a spring to close actuator). Then remove power to let the rack and pinion
spring mechanism drive back to its fully-closed position. If the OPEN or CLOSE stop point
are not aligned with the valve or damper position correctly, the end positions must be
adjusted. Please follow steps below: