Samson 3767 - Special Instructions Concerning Explosion Protection

EB 8355-2 EN 1-5
Safety instructions and measures
1.4 Special instructions concerning explosion protection
Equipment for use in zone2/zone22
Î InequipmentoperatedaccordingtotypeofprotectionExnAII(non-sparkingequip-
ment)accordingtoEN60079-15:2003,circuitsmaybeconnected,interruptedor
switchedwhileenergizedonlyduringinstallation,maintenanceorrepair.
Î Equipmentconnectedtoenergy-limitedcircuitswithtypeofprotectionExnLaccord-
ingtoEN60079-15:2003maybeswitchedundernormaloperatingconditions.
Î Themaximumpermissiblevaluesspeciedinthestatementofconformityoritsad-
denda apply when interconnecting the equipment with energy-limited circuits in type
ofprotectionExnLIIC.
Servicing explosion-protected devices
Î Observe the following for servicing equipment in a section relevant for explosion pro-
tection:
− Theequipmentmustnotbeputbackintooperationuntilaqualiedinspectorhas
assessed the equipment according to explosion protection requirements, has is-
suedaninspectioncerticateorgiventhedeviceamarkofconformity.Inspection
byaqualiedinspectorisnotrequiredifthemanufacturerperformed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 compo-
nents by the manufacturer.
− Devicesthathavealreadybeenoperatedoutsidehazardousareasandarein-
tendedforfutureuseinsidehazardousareasmustcomplywiththesafetyrequire-
mentsplacedonserviceddevices.Beforebeingoperatedinsidehazardousareas,
testthedevicesaccordingtothespecicationsforservicingexplosion-protected
devices.