Maintenance; Servicing Explosion-Protected Devices - Samson 3730 Series Mounting And Operating Instructions

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 positioner on which the ex-
plosion protection is based needs to be ser-
viced, the positioner must not be put back
into operation until an expert has inspected
the device according to explosion protection
requirements, has issued a certificate stating
this or given the device a mark of confor-
mity.
Inspection by an expert is not required if the
manufacturer performs a routine test on the
device prior to putting it back into opera-
tion. The passing of the routine test must be
documented by attaching a mark of confor-
mity to the device.
Explosion-protected components may only
be replaced by original, checked compo-
nents from the manufacturer.
Devices that have already been used outside
of hazardous areas and are intended for
use in hazardous areas in future must com-
ply with the safety demands placed on re-
paired devices. Prior to operation, they must
be tested according to the specifications
stipulated for "Repairing explosion-pro-
tected devices".
Maintenance
73
EB 8384-3 EN