Samson EB 3773 Series, Mounting And Operating Instructions

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9-2 EB 3773 EN
Servicing
− Only use original spare parts by
SAMSON, which comply with the original
specifications.
9.1 Servicing explosion-
protected devices
Risk of fatal injury as a result of electro-
static discharge at the housing.
The device's housing is made of
polycarbonate and may become
electrostatically charged when handled
incorrectly. An electric spark generated by
electrostatic discharge may lead to ignition
of a potentially explosive atmosphere and
cause death.
Clean a device installed in dust atmospheres
regularly. Only use a damp cloth or wipes to
clean the housing surface.
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.
Inspection 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 and the passing of the routine
test is documented by attaching a mark of
conformity to the device.
Replace explosion-protected components on-
ly with original, routine-tested components
by 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 ex -
plosion-protected devices.
9.2 Maintenance, calibration
and work on equipment
Î
Interconnection with intrinsically safe cir-
cuits to check or calibrate the equipment
inside or outside hazardous areas must
be performed only with intrinsically safe
current/voltage calibrators and measur-
ing instruments to rule out any damage
to components relevant to explosion pro-
tection.
Î
Observe the maximum permissible val-
ues specified in the certificates for intrin -
sically safe circuits.
DANGER !