J - Recommendations For Use - Lincoln Electric NERTAJET CPM 250 Safety Instruction For Use And Maintenance

8695 9064 / L

J - RECOMMENDATIONS FOR USE

DEFECTS
Pilot arcing difficult
Spark-extinction at the time of transfer.
Difficult transfer
J-48
- Check the type and pressure of pilot gas (argon) according to the
scales.
- Check that there is sparking of the H.F between the electrode and
the nozzle. For this, move to H.F test position (centring)
In this configuration, there is pilot gas flow.
- Check the gas conduit over the entire circuit : to do this, place a
blocked nozzle on the torch and carry out a gas test : Check :
- that the pressure displayed at the pressure-reducing valve does not
move after having closed the gas cylinder.
if the pressure drops .leak
- Reduce the power run-up time-delay.
- Check the cutting gas pressures.
NOTE :
Be careful of the pressure increase of the pressure-reducing
valves ; be careful not to move the torch too far away at the
time of the transfer : risk of arc breaking.
- Check the connection of the electric wire running to the part
(ground wire).
- Check the electrode circuit, especially the connections to the
bundle connections.
- Check the condition of the cone nozzle : it is to be changed if the
cutting channel is splayed downwards.
- In the case of water vortex fitting, check the assembly of the water
vortex nozzle : flow of water in shape of umbrella.
SOLUTIONS
CPM 250-300-720-900