MAXPRO200 Instruction Manual 807700 Revision 1 73
Installation
Supply gas plumbing
• Rigid copper plumbing or suitable flexible hose may be used for all gas supplies.
• Do not use steel, black iron, or aluminum pipe.
• After installation, pressurize the entire system and check for leaks.
• Recommended hose diameters are 9.5 mm (3/8 in) for lengths < 23 m (75 ft) and 12.5 mm (1/2 in) for
lengths > 23 m (75 ft).
For flexible-hose systems, use a hose designed for inert gas to carry air or nitrogen. See Supply gas hoses on page 74
for part numbers.
Note: When cutting with oxygen as the plasma gas, air must also be connected to the filter regulator.
Caution: Never use teflon tape
Caution: When connecting oxygen to the power supply, make sure that
allhoses, hose connections, and fittings are acceptable for use with
oxygen. Installation must be made in accordance with national
and local codes.
WARNING!
CUTTING WITH OXYGEN CAN CAUSE FIRE OR EXPLOSION
Cutting with oxygen as the plasma gas can cause a potential fire hazard due to the oxygen-enriched
atmosphere that it creates. As a precaution, Hypertherm recommends that an exhaust ventilation
system be installed when cutting with oxygen.
Flashback arrestors are required (unless not available for specific gases or required pressures) to
prevent fire from propagating back to supply gas.
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