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Pressure air source requirements
The supply air pressure must not exceed 8.5 bar and must not be less than 6.5
bar. The operating pressure and air consumption for the prescribed torch are
given in chapter TECHNICAL DATA.
For reliable operation of the plasma cutter and quality cuts, we recommend the
following recommendations when selecting the appropriate type of compressor:
1. The compressor must be able to deliver a minimum of 295/370 litres/min
of compressed air permanently. This parameter is referred to in the
catalogues as the so-called "compressed air capacity“.
Notice
Not to be confused with „suctioned quantity"!
2. The aerator must be equipped with a drain valve.
3. It is essential that the compressor is equipped with a compressed air cooler
or a sufficiently large air receiver. Otherwise, heated air enters the
distribution system and may contain significant amounts of water that
cannot be captured in the separators. As the air cools after it passes
through the ducts, it may reach the dew point, causing water droplets to
be expelled, which may be after the separator. The optimum size of the
airbox is at least 100 litres.
4. An efficient filter with sufficient capacity, an oil and condensate separator
or a pressure regulator must be installed at the outlet if the compressor
operating pressure is higher than 8.5 bar. These elements must be rated
for a flow rate of at least 370 l/min so as not to cause a drop in outlet
pressure during cutting.
5. The inside of the airbox should be coated against corrosion.
6. The compressor intake should be fitted with an efficient intake air filter,
especially for mobile compressors when operating in dusty environments.
Caution
Some compressors have a built-in pressure air mixer at the
outlet. Under no circumstances must the plasma cutter be connected to
this outlet! This would contaminate the entire pneumatic system and could
damage the torch.
Connection to the central air distribution system
1. Before connecting, determine the working pressure in the system and the
extent of its fluctuation.
2. During cutting, the working pressure must be between 5.0 and 6.0 bar. To
achieve maximum cutting performance, we recommend that the pressure
does not drop below 5.5 bar.
3. Check the performance and technical condition of the central
compressor(s). The same requirements as above apply here.
4. Check the design and condition of pressure air filtration and condensate
