variostar 247 variostar 317, 317-2 operating instructions ... - dpiaca

&Fig.18Settings on the control panelSPOT WELDINGN.B.! For spot-welding, it is necessary to fit a spot-welding attachment ontothe torch first.- Set the welding parameters- Select the desired spot-welding time on the spot-welding time dial- Shift the operating-mode selector switch to the spot-welding position- Make sure that the torch is correctly tooled up (i.e. with spot-weldingattachment) and place it onto the metal sheet- Press and release the torch trigger- Automatic spot-welding sequence takes placeN.B.! To interrupt the spot-welding sequence, press and release the torchtrigger again.The settings made are correct when the top of the spot-weld is slightly convexand it can be seen on the underside of the spot-welded parts that they havebeen welded through. Also, make sure that the parts to be spot-welded areresting snugly against one another, and that any contamination from e.g. paintand rust is removed first.ENGLISHCARE AND MAINTENANCEWarning! Before opening up the welding machine, switch it off, unplugit from the mains and put up a warning sign to stop anybodyinadvertently switching it back on again. If necessary, discharge theelectrolytic capacitors.In order to keep your welding machine operational for years to come, youshould observe the following points:- Carry out safety inspections at the stipulated intervals (see the sectionheaded “Safety rules”)- Depending on the machine location, but no less often than twice a year,remove the side panels from the machine and blow the inside of themachine clean with dry, reduced-blow compressed air. Do not aim airjetsat electronic components from too close a range.- If a lot of dust has accumulated, clean the cooling-air ducts.13