5-3
EB|LTR|43_EN
May 2023 edition
Subject to technical changes
Installation
Danger and damage due to retrofi tting an actuator unit!
The subsequent fi tting of an actuator unit can pose a danger to
the user and cause damage to the pipe system.
Ö The torque, rotation direction, actuation angle and adjust-
ment of the “OPEN” and “CLOSED” end stops must be
adapted to the butterfl y valve.
Danger and damage due to use of an electrical actuator!
Ö It must be ensured that the actuator in the “CLOSED” and
“OPEN” position is turned off by the limit switch signal.
Ö If shut-off takes place in an intermediate position due to the
signal of the torque switch, this signal should be used in ad-
dition for an error message. The fault must be remedied as
soon as possible, see Chapter “8 Faults”.
Ö For further instructions, see the electrical actuator documenta-
tion.
Danger of injury due to preloaded springs!
Butterfl y valves that are equipped with preloaded actuator
springs are under mechanical tension. The marking on the actua-
tor type plate indicates whether a spring return is available and
the fail-safe position. The marking on the type plates is described
in the instruction manuals for the actuators.
Ö Release the compression from the preloaded springs before
working on the actuator, see the corresponding actuator doc-
umentation.
Danger and damage due to high external loads on an actuator
unit!
Actuators are not “stepladders”.
Ö Loads may not be applied to the actuators as they can dam-
age or destroy the butterfl y valve.
Danger and damage due to heavy actuator units!
Actuators that are heavier than the weight of the butterfl y valve
can pose a danger to the user and cause damage to the pipe
system.
Ö These actuators must be supported if they generate a bend-
ing stress on the butterfl y valve due to their size and/or in-
stallation situation.
Damage due to incorrectly installed end stops.
The actuator end stops must be adjusted such that the seat is not
overrun, see the corresponding actuator documentation.
Damage to the butterfl y valve due to the incorrect actuator
assembly!
Triple eccentric butterfl y valves must always be closed clockwise!
Ö Observe the turning direction when assembling an actuator.
DANGER
WARNING
NOTE
Damage to the butterfl y valve due to the incorrect setting of the
end stops!
The actuating device is adjusted to the operating data specifi ed
in the order.
Any change to the “OPEN” and “CLOSED” end stops preset by
SAMSON LEUSCH is only permissible upon consultation and ap-
proval.
5.3.2 Installing the actuator in the pipe
Premature wear and leakage due to insuffi cient support or
mounting!
Ö Use suffi cient supports or mountings in suitable points.
Ö Fasten the actuator with suitable lifting equipment and pay
attention to the centre of gravity of the actuator, see chapter
“4.3.2 Lifting the actuator”. Data regarding the centre of
gravity can be requested from SAMSON LEUSCH through
the nearest SAMSON offi ce.
Swivel and/or tipping danger
When using manual auxiliary actuations, observe the corre-
sponding documentation to bring the actuator into the closed po-
sition.
Ö Remove the protective elements on the butterfl y valve prior to
installation.
Ö Check the closed position. Make sure that no parts of the
wedge-lock-washer protrude beyond the plane-parallel seal-
ing surfaces.
Ö In the case of noise-reducing versions of the wedge-lock-
washer that protrudes past the sealing surfaces, the order-re-
lated dimension sheet must be observed.
To ensure that there is a collision-free installation, suitable
measures must be taken.
Ö Lift the actuator at the installation site using suitable lifting
equipment, see Chapter 4.3.2. When doing so observe the
fl ow direction of the actuator. It is marked with direction ar-
rows on the side of the valve body.
Ö Install the actuator, depending on the version, in the pipe as
follows:
NOTE
NOTE
NOTE
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