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ALFA IN a.s
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regulation if necessary.
10. Set potentiometer
A3
to the cutting power you need.
11.
Fit the torch with appropriate type of cutting tip electrode and shield
cup according to the selected cutting current.
12.
Press the trigger on the cutting torch, the pre gas will flow for 1 s.
13.
The pilot arc will start.
14. Shift the torch with the pilot arc close to the material, the pilot arc will
change to cutting arc automatically. If you do not start cutting within 2 s, the
arc will snuff off. When you move the torch away from the material the
cutting arc would change into the pilot arc. In case the cutting process would
not start within 2 s, the arc would extinguish. It is possible to release the
torch trigger in the 4 stoke mode
.
15. To finish the cutting the 2 stroke mode
release the torch trigger. In
the 4 stroke mode
press the torch trigger
7.2
REQUIREMENTS FOR SOURCE OF COMPRESSED AIR
1. Delivered air pressure must be max. 8,5 bar and min. 5 bar.
2. Air consumption minimal 220 l/min
3.
Compressed air for the plasma must be clean and dry.
4.
Pressure dew point +3 ° C
5.
Maximum oil content 0.1 mg/m3
6.
Maximal size of solid particles 15 microns
7.
The minimal size of an air tank is 50 l
8.
No additional oiling if the pressure air is permitted. That could damage
the plasma machine and the cutting torch.
7.3 CONNECTION TO THE CENTRAL AIR DISTRIBUTION
1. Before connection find out the working pressure in the system and range
of its fluctuation.
2. Check out the model and technical state of the filter system and
condensate trap.
3. Make sure the piping is not oiled.
4. Install an additional filter and moisture trap as close to the cutting
machines as possible.
7.4 OPTIONAL AIR FILTERS
To achieve high quality cutting and to avoid serious disturbances to the torch it
is highly advised to include the air filter.
