Actuator On Valve Assembly; Electrical Connection - Bernard Controls SQX TOTAL N31272 Manuel De Mise En Service

Storage
Actuators must be stored under cover in a clean, dry place which is protected against variations
in temperature.
Avoid storing directly on the ground. If stored in areas subject to damp, apply power to the actuator
to dry it out electrically. Check to ensure that the cable entries are sealed.
Ensure electrical component covers and compartments are properly sealed.
In case of a valve with an important stem lift, check that the stem protection cover is mounted
on the actuator. If not, assemble it with a weak sealing paste.
Inspection following storage
1. If stored for less than one year:
• Visual inspection of electrical parts.
• Perform a few movements manually.
• Check consistency of grease.
• Commission the actuator.
2. If stored for more than one year:
• Long-term storage causes the consistency of the grease to change. To avoid any
grease-drying problem, do some rotations of the actuator several times a year by using
motor or manual override.
• Visual inspection of electrical parts.

4 ACTUATOR ON VALVE ASSEMBLY

Actuator should be secured directly to the valve using proper bolts or via a proper interface.
After assembly, the actuator can operate in any position. However, cable glands should not be
oriented upwards (loss of water tightness) and the motor will preferably not be positioned at the
bottom (potential internal condensation trap)
Note 1: do not lift the actuator by handwheel, it could damage the wormwheel gear.
Note 2: see §.3 for details on storage precaution prior to starting-up.
Note 3: Greasing of A form drive bush trust unit has to be done prior to mounting actuator on valve
(in the case of a rising stem valve).

5 ELECTRICAL CONNECTION

A wiring diagram is normally supplied with the actuator. If
this is not the case, please ask our customer service.
Operating procedure :
a) Check the power supply characteristics with respect to
the rating nameplate.
b) Open the terminal box (fig. 2), connect the power and
control circuits (ring tongue not supplied). The screw dia-
meters is 3mm for the control and 4mm for the power.
Check the wiring.
c) make sure that the cover screws, cable glands are pro-
perly tighten and IP68 waterproofness is assured by an
O ring or by a thread sealant as noticed §1.3.
Torque, travel limit and motor thermal overload switches must be integrated into
your control system (see wiring examples) in order to prevent potential damage
8
WARNING
to the actuator or valve.
O-rings
Captive
Cable entries
screws
(fig. 2)