Samson 3725 Mounting And Operating Instructions page 8

Safety instructions and measures
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 accord-
ing to explosion protection requirements, has issued an inspection certificate, or given the
device a mark of conformity. Inspection by a qualified inspector is not required if the manu-
facturer performs a routine test on the device before putting it back into operation. Document
the passing of the routine test by attaching a mark of conformity to the device. Replace ex-
plosion-protected components only with original, routine-tested components by the manufac-
turer.
Devices that have already been operated outside hazardous areas and are intended for fu-
ture use inside hazardous areas must comply with the safety requirements placed on serviced
devices. Before being operated inside hazardous areas, test the devices according to the
specifications for servicing explosion-protected devices.
Maintenance, calibration, and work on equipment
Î Only use intrinsically safe current/voltage calibrators and measuring instruments for in-
terconnection with intrinsically safe circuits to check or calibrate the equipment inside or
outside hazardous areas.
Î Observe the maximum permissible values specified in the certificates for intrinsically safe
circuits.
Referenced standards and regulations
Devices with a CE marking fulfill the requirements of the Directives 2014/34/EU and
2014/30/EU. The declaration of conformity is included at the end of these instructions.
Referenced documentation
The following documents apply in addition to these mounting and operating instructions:
− The mounting and operating instructions of the components on which the positioner is
mounted (valve, actuator, valve accessories, etc.).
8 EB 8394 EN