Samson 3965 Mounting And Operating Instructions page 7

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
according 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
manufacturer 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 explosion-protected components only with original, routine-tested components by the
manufacturer.
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
The solenoid valve islands comply with the requirements of Directives 2014/30/EU and
2014/35/EU for applications without explosion protection as well as Directive 2014/34/EU
for explosion-protected applications. The declaration of conformity includes information
about the applied conformity assessment procedure. This declaration of conformity is includ-
ed in the appendix of these instructions.
Referenced documentation
The following documents apply in addition to these mounting and operating instructions:
− Data sheet u T 3965
− The mounting and operating instructions of the components on which the solenoid valve
island is mounted (valve, actuator, valve accessories etc.)
EB 3965 EN
Safety instructions and safety measures
7