Samson EB 31a-23, Mounting And Operating Instructions

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7-1
EB 31a-23_EN
Edition: November 2021
Speci
fi cations subject to change
Operation
7 Operation
The work described in this section is only to be performed by ful-
ly trained and quali
fi ed 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.
Ö
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.
Ö
Use suitable silencers and vent plugs.
Ö
Wear eye and hearing protection when working near the ac-
tuator.
Crush hazard arising from moving parts!
The actuator and the valve assembly contains moving parts,
which can injure hands or
fi ngers.
Ö
Do not touch or insert hands or fi nger into moving parts.
Ö
Before starting any work on the actuator disconnect all pneu-
matic / hydraulic / electrical supplies and discharge the
pressure from the actuator.
Ö
Do not impede the movement of the pinion and the pistons by
inserting objects into the actuator.
Risk of personal injury through incorrect operation, use or in-
stallation as a result of information on the actuator being illegi-
ble!
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 in-
structions not followed. There is a risk of personal injury.
Ö
Keep all relevant markings and inscriptions on the device in a
constantly legible state.
Ö
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.
Ö
Refer to section “3 Designs and principle of operation”.
Ö
Choose the accessories, control elements, tubing and fi t- tings
for adequate fl ow rates so as not to constrict fl ow or cause
high pressure drop affecting the performance of the actuator.
Ö
In case the plant speci fi cations require a supply pressure for
the actuator lower than the maximum supply pressure
marked in the actuator nameplate, label the actuator with re-
duced supply pressure (e.g. “Max. supply pressure limited to
... bar“).
WARNING