HySpeed HT2000 Instruction Manual d-1
19
Appendix D
AIR FILTERS
Air Filters
Gas purity is critical for maximizing consumable parts life, as well as for producing the highest quality cutting
which Hypertherm plasma equipment can achieve. Plasma air must be clean, dry and oil-free, and air must be
delivered at the pressure and flow rate specified for each plasma system. If the air supply contains moisture,
oil or dirt particles, cut quality will be lowered and consumable parts life will be shortened, which increase
production costs.
To optimize both consumables life and cut quality, Hypertherm recommends a three-stage filtering process
for compressor air for removing contaminants from the air supply.
1. The first stage of filtering should remove at least 99% of all particles and liquids 5 microns and larger in
size.
2. The second stage should be a coalescing-type filter to remove oil. This filter should remove 99.99% of
particles 0.025 micron and larger in size.
3. The third and final stage of filtration should be an activated carbon adsorbent filter that removes
99.999% of oil or hydrocarbons that have not been trapped by the previous stages.
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