8. Maintenance and troubleshooting
8.1 Maintenance
After the arc-welding rectifier is used for a period of time, it is necessary to
remove dust and dirt in the equipment with the dry compressed air or in
other way to ensure the arc-welding rectifier functions properly for a long
time, and prolong its service life.
Check the fasteners and connections in the equipment to see if any is loose
or broken. If yes, it is necessary to correct it in time.
Attention:
* Be sure to cut off the power supply of the arc-welding rectifier
when remove dust and dirt.
* Do not fiddle with the connections in the equipment when
remove dust and dirt to avoid damaging the component.
Check the grounding of the case of the arc-welding rectifier at all times to
avoid an electric shock.
Check if the arc-welding rectifier is securely connected with the three-
phase power supply of the power grid at all times to avoid the arc-welding
rectifier functioning improperly or the local area of the joint being heated
and damaged.
Check if the external bolts of the arc-welding rectifier is secured at all
times
to avoid the arc-welding rectifier functioning improperly or the local area of
the joint being heated and damaged.
Clean the wire feeder at all times to keep it clean and well insulated.
Make sure no foreign substance exists in the wire groove of the wire-feeding
reel to ensure smooth wire feeding.
Clean the wire-feeding hose of the welding gun at all times to ensure its
smoothness and intactness.
8.2
Troubleshooting
8.2.1 Make the following checks first when the arc-welding rectifier functions
improperly:
Is the three-phase supply voltage between 340V~420V?
Does the three-phase power supply have a phase lacking fault?
Is the input power cable of the arc-welding rectifier securely connected?
Is the output power cable of the arc-welding rectifier correctly connected
and in a good contact?
Is any component burned, or any connection broken or loose in the
equipment?