Periodic Testing - Samson 3372 Mounting And Operating Instructions

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.
WARNING
!
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 configuration 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labels with incorrect or outdated infor-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.
NOTICE
!
Risk of actuator damage due to excessively
high or low tightening torques.
Observe the specified torques on tightening
actuator components. Excessively tightened
9-2
torques lead to parts wearing out quicker.
Parts that are not tightened far enough may
loosen.
Î Observe the specified tightening torques
(u AB 0100).
NOTICE
!
Risk of actuator damage due to the use of
unsuitable tools.
Î Only use tools approved by SAMSON
(u AB 0100).
NOTICE
!
Risk of valve damage due to the use of un-
suitable lubricants.
Î Only use lubricants approved by
SAMSON (u AB 0100).
Note
− 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-
ifications.

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.
EB 8313-3 EN