Helvi COMBI PC 502 K Manual De Uso Y Manutención página 9

COMPRESSED AIR SOURCE
The plasma cutting process requires a compressed air source: this unit can work either with the inside air
compressor or with an external compressed air source.
The use of an external compressed air source allows a wider cutting current range and permits to cut thicker
workpieces.
Select the proper mode for your application. For proper selection and consumable parts installation follow
the here below chart:
Cutting with inside air
compressor
10A-30A
Current < 20 Amp
Tip with hole ø 0,65mm
Retaining Cap
Select the compressed air source through the
selector switch (9) on the back of the unit
Proceed with cutting operation
Max current = 40 Amp
Check set current
Current 20 ÷ 30 Amp
Tip with hole ø 0,8mm
Retaining Cap
Cutting with external
compressed air source
30A-40A
Current > 30 Amp
Tip with hole ø 0,9mm
Shield Cup Body
Shield Cap
9