Starweld Quatro 450 Operato
r’s Manual
14
6 Maintenance and Troubleshooting
6.1 Routine Maintenance
Turn off power before undergoing maintenance on the unit
The unit should be blown out every 6 months to remove dirt and dust build up,
depending on site conditions. Worn or damaged machine sockets should be
replaced. Damaged mains cable should be replaced.
If the unit is used in a dusty environment then the unit should be blown out every 3
months.
In order to blow out the machine the cover should be removed and the dust blown
out with compressed air. An air pressure of 5 bar will be sufficient to remove any
dust buildup. It is important to get all the dust out the heatsink and fan as well.
6.2 Troubleshooting
Fault
Remedy
Power LED does not light
Switch the circuit breaker at the rear of the unit to the
on position.
Switch the unit on at the wall plug.
Make sure the wall plug is correctly wired.
Power LED on but no weld
output
Make sure the unit is switched to the stick position.
Check for Overtemp error (Err Ot)
Make sure unit is in the local mode and not remote.
Erratic or improper weld
output
Use proper size and type of weld cable.
Clean and tighten all weld connections including the
earth connection to the work.
Fan not working
Look for something blocking the fan.
Send the unit in for service to replace the fan.
Wandering arc
Use proper size tungsten.
Use properly prepared tungsten.
Reduce gas flow rate.
Unit not MIG welding
Check interconnecting cable for any bad connections
especially in 14 way socket
Check 10A circuit breaker on front panel
