Unitor UPC 1041, Инструкция по эксплуатации

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Revision date: 120813 Page 4 of 46
3 OPERATING INSTRUCTIONS
Check that the machine has been properly connected to power supply and compressed air
according to chapter 2, INSTALLATION.
Check that the torch is fitted with appropriate consumables for the job at hand.
Connect the return clamp directly onto the work piece, ensuring that a good contact is obtained.
If necessary, clean the surface from paint, rust, dirt, etc.
Switch the machine’s main power switch on. The READY lamp will light and the fan will start working.
Choose process power, 20-100 Ampere.
Press trigger shortly to start air pre-flow and check air pressure: 4,5 – 5,0 bar.
When cutting at lower amperage than 70 A it may be necessary to lower the air pressure to 4,5 bar in
order to get the best cutting capability.
Do not forget to raise the pressure again to 5 bar if returning to amperage above 70 A.
Cutting
Place the torch in position for cutting or gouging. For most cutting
operations the contact cutting shield should be used. It is placed
directly on the work piece at the edge where cutting should start
Lift the trigger protection and press the trigger-switch on the torch
handle.
Air will flow for one second before the pilot arc strikes.
The pilot arc will burn for about 3 seconds.
If contact with the work piece is not obtained within this time, the pilot
arc goes out.
Reposition the torch to ensure that the pilot arc will reach the work-
piece and make a new try.
When the cutting arc is established, pull the torch slowly across the
surface that is to be cut. At correct speed the sparks goes straight
through the metal with only a slight bending towards the beginning of
the cut
Pause briefly at the end of cut before releasing the trigger.
The plasma arc goes out immediately. Air will continue to flow for
about 30 seconds. When removing the finger from the trigger the
trigger protection will close over the button.