EB AT-RP-4GU EN 7-1
Operation
7 Operation
The work described in this section is only to be performed by
fully trained and qualified personnel.
Risk of personal injury during actuator air exhaust.
In case of pneumatic version the actuator is operated with air.
As a result, air is exhausted during operation.
Î Install the air exhaust components in such a way that
exhaust ports are not located at eye level and the actuator
does not discharge at eye level in the work position.
Î Use suitable silencers and vent plugs.
Î Wear eye and hearing protection when working near the
actuator.
WARNING
!
Crush hazard arising from moving parts.
The actuator and the valve assembly contains moving parts,
which can injure hands or ngers.
Î Do not touch or insert hands or nger into moving parts.
Î Before starting any work on the actuator disconnect all
pneumatic / hydraulic / electrical supplies and discharge
the pressure from the actuator.
Î Do not impede the movement of the pinion and the pistons
by inserting objects into the actuator.
WARNING
Risk of personal injury through incorrect operation, use or
installation as a result of information on the actuator being
illegible.
Over time, markings, labels and nameplates on the actuator
may become covered with dirt or become illegible in some
other way. As a result, hazards may go unnoticed and the
necessary instructions not followed. There is a risk of personal
injury.
Î Keep all relevant markings and inscriptions on the device
in a constantly legible state.
Î Immediately renew damaged, missing or incorrect name-
plates or labels.
The actuator can be operated after connecting it to the supply
line and adjusting the stroke.
Spring return actuators work on air stroke or spring stroke by
pressurizing or venting respectively the connection ports.
Double acting actuators require alternate connection ports to
be pressurized and vented for stroking.
Î Refer to section 3 ‘Design and principle of operation‘.
Î Choose the accessories, control elements, tubing and fit-
tings for adequate flow rates so as not to constrict flow or
cause high pressure drop affecting the performance of the
actuator.
Î In case the plant specifications require a supply pressure
for the actuator lower than the maximum supply pressure
marked in the actuator nameplate, label the actuator with
reduced supply pressure (e.g. “Max. supply pressure limi-
ted to ... bar“).
WARNING
!
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