Samson 3730-0 Mounting And Operating Instructions

Also see for 3730-0: Mounting and operating instructions Quick guide Mounting and operating instructions

Samson 3730-0 Mounting And Operating Instructions Manual pdf 43 page image

EB 8384-0 EN 43MaintenanceÎ Turn the SPAN adjuster until the plugstem moves as far as it will go to the endposition.7.12 Activating the tight-closingfunctionHaving adjusted zero and span, the tight-closing function (description on page 34)must be activated at switches S9 and S10 toensure a tight valve shut-off.AIR TO OPEN S9: ON S10: OFFAIR TO CLOSE S9: OFF S10: ONThree-way valve S9: ON S10: ONTight-closing functiondeactivated S9: OFF S10: OFF8 MaintenanceThe positioner does not require any mainte-nance.There are filters with a 100 μm mesh size inthe pneumatic connections for supply andoutput which can be removed and cleaned,if required.The maintenance instructions of any up-stream supply air pressure reducing stationsmust be observed.9 Servicing explosion-protecteddevicesIf a part of the device on which the explosionprotection is based needs to be serviced, thedevice must not be put back into operationuntil a qualified inspector has assessed it ac-cording to explosion protection requirements,has issued an inspection certificate or giventhe device a mark of conformity. Inspectionby a qualified inspector is not required if themanufacturer performs a routine test on thedevice before putting it back into operation.Document the passing of the routine test byattaching a mark of conformity to the device.Replace explosion-protected components on-ly by original, routine-tested componentsfrom the manufacturer.Devices that have already been operatedoutside hazardous areas and are intendedfor future use inside hazardous areas mustcomply with the safety requirements placedon serviced devices. Before being operatedinside hazardous areas, test the devices ac-cording to the specifications for servicingexplosion-protected devices.