Low or no gas flow | Cylinder valve closed | Open cylinder valve |
| Gas flow not set correctly | Set proper flow rate |
| Cylinder out of gas | Get new cylinder of gas |
| Leak in gas line | Inspect and replace |
| Clog or Leak in gun | Check for obstruction or defective seals |
Arc unstable | Wrong welding polarity | Check polarity - Refer to proper section |
Erratic or Intermittent | Wrong size, worn and/or | Replace tip - remove any spatter on end of tip |
Arc - Poor Starting | melted contact tip |
|
"Hunting" Arc | Worn work cable or poor connections | Inspect - repair or replace as necessary |
| ||
| Loose electrode connections | Be sure electrode lead is tight, gun cable tight in |
|
| wire feeder contact block, gun nozzle and gun |
|
| tip tight |
– 25 –
