Samson 3372 - Periodic Testing

9-2 EB 8313-3 EN
Service and conversion work
Î Before working on the actuator, discon-
nect and lock the pneumatic air supply
as well as the control signal.
Î Do not impede the movement of the actu-
ator stem by inserting objects into the
yoke.
Î Before unblocking the actuator stem after
it has become blocked (e.g. due to
seizing up after remaining in the same
position for a long time), release any
stored energy in the actuator (e.g. spring
compression). See 'Relieving the spring
compression in the actuator' in the
'Removal' section.
Risk of personal injury through incorrect
operation, use or installation as a result of
incorrect information on the actuator.
After any adjustment or conversion work, the
details on the actuator nameplate may no
longer be correct. This may apply, for exam-
ple, to the conguration ID or the symbol af-
ter reversal of the direction of action.
Î Immediately renew any nameplates or
labels with incorrect or outdated infor-
mation.
Î Add any new values to the nameplate. If
necessary, contact SAMSON to obtain a
new nameplate.
Risk of actuator damage due to excessively
high or low tightening torques.
Observe the specied torques on tightening
actuator components. Excessively tightened
torques lead to parts wearing out quicker.
Parts that are not tightened far enough may
loosen.
Î Observe the specied tightening torques
(uAB0100).
Risk of actuator damage due to the use of
unsuitable tools.
Î Only use tools approved by SAMSON
(uAB0100).
Risk of valve damage due to the use of un-
suitable lubricants.
Î Only use lubricants approved by
SAMSON (uAB0100).
− The product warranty becomes void if ser-
vice or repair work not described in these
instructions is performed without prior
agreement by SAMSON's after-sales ser-
vice.
− Only use original spare parts by SAM-
SON, which comply with the original spec-
ications.
9.1 Periodic testing
Depending on the operating conditions,
check the actuator at certain intervals to pre-
vent possible failure before it can occur. Op-
erators are responsible for drawing up an
inspection and test plan.
WARNING
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NOTICE
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NOTICE
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NOTICE
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Note