Maintenance; Servicing Explosion-Proof Versions - Samson 3780 Mounting And Operating Instructions

Maintenance

5. Maintenance
The positioner is maintenance-free.
The pneumatic connection 9/Supply fea-
tures a sieve with 100 µm mesh size. If re-
quired, the filter can be unscrewed and
cleaned.
The maintenance instructions for any up-
stream air pressure reducing stations for
supply air must be observed.
6. Servicing explosion-proof ver-
sions
In the event that a positioner's part on
which the explosion protection is based
must be serviced, the positioner must not be
put back into operation again until an ex-
pert has inspected the device according to
explosion protection requirements, has is-
sued a certificate stating this, or given the
device a mark of conformity.
Inspection by an expert does not have to be
carried out, if the manufacturer performs a
routine check test on the device prior to tak-
ing it into operation again, and the success
of the routine check test is documented by
attaching a mark of conformity to the de-
vice.
Ex-components may only be replaced by
original checked components from the
manufacturer.
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EB 8380-1 EN