Samson 4763, Инструкция по монтажу и эксплуатации

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EB 8359-2 EN 9-1
Servicing
9 Servicing
The work described in this section is only to
be performed by personnel appropriately
qualified to carry out such tasks.
Risk of fatal injury due to the ignition of an
explosive atmosphere.
Î
Installation, operation or maintenance of
the positioner must only be performed by
personnel who has undergone special
training or instructions or who is autho
-
rized to work on explosion-protected de -
vices in hazardous areas.
Intrinsic safety rendered ineffective in in-
trinsically safe devices.
Î
Only connect intrinsically safe devices in-
tended for use in intrinsically safe circuits
to certified intrinsically safe input-con
-
nected units.
Î
Do not place intrinsically safe devices
back into operation that were connected
to intrinsically safe input-connected units
without certification.
Î
Do not exceed the maximum permissible
electric values specified in the EC type
examination certificates when intercon
-
necting intrinsically safe electrical equip -
ment (U
i
or U
0
, l
i
or I
0
, P
i
or P
0
, C
i
or C
0
and L
i
or L
0
).
Crush hazard arising from actuator and
plug stem moving.
Î
Do not touch any moving valve parts
while the control valve is in operation.
Î
Before performing any mounting or in -
stallation work on the positioner, put the
control valve out of operation by discon
-
necting and locking the supply air and
control signal.
Î
Do not impede the movement of the actu -
ator and plug stem by inserting objects
into the yoke.
The positioner was checked by SAMSON
before it left the factory.
− The product warranty becomes void if
service or repair work not described in
these instructions is performed without
prior agreement by SAMSON's After-
sales Service.
− Only use original spare parts by
SAMSON, which comply with the
original specifications.
The positioner does not require any mainte-
nance.
Î
Observe the maintenance instructions of
any upstream supply air pressure reduc-
ing stations.
DANGER !
WARNING !
WARNING !