1. Fault: cutting gas pressure does not build up
| Reasons | Possible solutions |
| cutting gas hose is not connected properly | connect the cutting gas hose properly |
| cutting gas escape somewhere else | send the laser head back for repair |
| protective lens cartridge loose or damaged | replace the protective lens cartridge or push in until it clicks into place |
| gasket between the ceramic and the sensor insert not tight | replace the worn gasket |
2. Fault: Gases and liquids do not reach the cutting point
| Reasons | Possible solutons |
| gas and liquid hoses are not connected properly | connect the gas and liquid hoses properly |
| gases an liquids escape at other place | send the laser head back for repair |
3. Fault: bad cutting
| Reasons | Possible solutions |
| · focus diameter too large · wrong focusing lens installed in the laser head · focusing lens damaged or wrong focal length | · replace the laser head · send the laser head back for repair |
| bad focal position/centring | check the focal position/centring, remove the error if necessary |
| protective lens dirty | clean the protective lens and replace if necessary |
| influence of the alloy | adjust cutting parameters |
4. Fault: nozzle is getting too hot
| Reasons | Possible solutons |
| laser beam obstructed | check the focus centring |
5. Fault: focus position can’t be found in the adjustment range of the vertical adjustment
| Reasons | Possible solutions |
| wrong focal length of focusing lens or focusing lens damaged | · replace the laser head · send the laser head back for repair |
6. Fault: beam position centring device difficult to turn
| Reasons | Possible solutions |
| adjusting screw threads parts damaged or dirty | send the laser head back for repair |
