82
EB 8384-5 EN
Maintenance
10
Maintenance
The positioner does not require any mainte-
nance.
There are filters with a 100 µm mesh size in
the pneumatic connections for supply and
output which can be removed and cleaned,
if required.
The maintenance instructions of any up-
stream supply air pressure reducing stations
must be observed.
11
Servicing explosion-protected
devices
If a part of the device on which the explosion
protection is based needs to be serviced, the
device must not be put back into operation
until a qualified inspector has assessed it ac-
cording to explosion protection require-
ments, has issued an inspection certificate or
given the device a mark of conformity. In-
spection by a qualified inspector is not re-
quired if the manufacturer performs a rou-
tine test on the device before putting it back
into operation. Document the passing of the
routine test by attaching a mark of conformi-
ty to the device. Replace explosion-protected
components only with original, routine-tested
components from the manufacturer.
Devices that have already been operated
outside hazardous areas and are intended
for future use inside hazardous areas must
comply with the safety requirements placed
on serviced devices. Before being operated
inside hazardous areas, test the devices ac
-
cording to the specifications for servicing
explosion-protected devices.
Read section 13 for maintenance, calibration
and adjustment work inside and outside
hazardous areas.
12
Firmware update (serial in
-
terface)
Firmware updates on positioners currently in
operation can be performed as follows:
When updates are performed by a service
employee appointed by SAMSON, the up-
date is confirmed on the device by the test
mark assigned by SAMSON’s Quality Assur-
ance.
In all other cases, only plant operator per-
sonnel with written approval may perform
updates. Updates are to be confirmed by ap-
proved personnel on the device.
Laptops and PCs connected to the power
supply must not be used without an addition-
al protective circuit.
This does not apply to laptops in battery op-
eration. In this case, it is assumed that a bat-
tery-powered laptop runs briefly for software
programming or testing purposes.
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