Owner's manual

Manual 0-4828 Rev BA 8-1 TORCH DATA for Ultra-Cut
8.0 TORCH OPERATION
Torch Parts Selection
The application will determine which torch parts must be used. Refer to the cut charts for the proper torch parts to
install for a selected application.
CAUTION
Do not interchange parts. Make sure all torch parts correspond with the plasma and shield
gases in use for the application.
Pre-Setting Power Supply Controls
Set the Power Supply controls prior to operating the system as described in the power supply Operating Manual.
Refer to the cutting charts for the proper cutting parameters for the application.
Recommended Cutting Speeds
Cutting speed depends on material and thickness. The following factors may affect system performance:
• Torchpartswear;gasqualityandmassow/pressure;operatorexperience;torchstandoffheight;proper
workcableconnection;alloycontentofmaterial;cuttingtablecapabilities&accuracy.
NOTE
Thisinformationrepresentsrealisticexpectationsusingrecommendedpracticesandwell-
maintained systems. Actual speeds may vary from those shown in the charts depending
on the alloy content of the selected material. Voltage ratings may vary depending on the
CNC, cutting table, or height controller.
For complete cutting speed chart data refer to the following pages.
Consumables Notes
Always assemble the consumable parts properly. Improper assembly may damage the parts or the torch head.
Ensure that parts are seated together correctly.
Always check the shield gas distributor for charring when changing parts. Do not use the distributor if it is charred.
Replace the shield gas distributor regularly to ensure proper performance.
Operational Notes
Always purge the torch after changing consumables or if the power supply has been shut off. The power supply's
built-inpurgefunctionmaynotbeenoughtoproperlypurgethetorch.Manuallyowgaswiththe'TestCutFlow'
and 'Test Pre-Flow' functions to help remove any remaining coolant from the lines.
Slightlyincreasingthepreowpressuremayincreasepiercingabilityonthickermaterials.However,increasingthe
preowpressuretoomuchmayaffectplasmastartingreliability(misring).
Decreasingpreowpressuremayimprovepiloting.Preowpressurecanbereducedwithoutaffectingcutperfor-
manceaslongasthepilotarcstilltransferstotheplatewell.Decreasingpreowpressuretoomuchwillaffectthe
ability to transfer the arc to the plate and cause damage to the tip.
Notes on Chart Measurements
Pressuremeasurementsinthechartsareinpsi(g),notpsi(a).0psi(g)=14.7psi(a)(1atmosphere).
Ball settings are at the center of the gauge ball.