Fronius Robacta PTW 500 Instructions De Service page 37

Start-up 5.
(continued) 6.
7.
8.
9.
10. Ignite pilot arc
Important! To reduce wear, the pilot arc should burn throughout the operation.
11. Start welding (depending on the application)
When starting up for the first time, make sure the gas flow is correct
Position plasma torch (adjust robot)
Purge shielding gas and plasma gas for at least 30 seconds
NOTE! The plasma torch must be cooled constantly during operation.
Check that the cooling circuit on the plasma machine is functioning correctly, set the
cooling unit to permanent operation (e.g. set-up menu on power source, parameter
C-C =ON)
NOTE! Igniting the pilot arc without presetting the plasma gas can damage the
plasma nozzle, ceramic centring tube and tungsten electrode (all wearing
parts).
Specify the plasma gas value (according to the diameter of the plasma nozzle and
the application)
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