Hypertherm XPR460 - Page 51

WARNING
HYDROGEN GAS CAN CAUSE AN EXPLOSION OR FIRE
Hydrogen is a flammable gas that can cause an explosion or fire if it is not
removed.
Keep flames away from cylinders and hoses that contain hydrogen. Keep flames
and sparks away from the torch when using hydrogen as a plasma gas.
Consult your local safety, fire, and building code requirements for the storage and
use of hydrogen.
Hypertherm recommends that you install an exhaust ventilation system to remove
the hydrogen-enriched atmosphere that can collect when hydrogen is used as the
plasma gas for cutting.
Flashback arrestors are REQUIRED to stop the spread of fire to the supply gases
(unless a flashback arrestor is not available for a specific gas or pressure).
As an installer or user, you must supply the exhaust ventilation and flashback
arrestors for your cutting system. You can get them from your cutting machine
supplier.
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Make sure to obey all applicable codes and regulations for supply gas plumbing:
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All installer or user-supplied equipment must obey applicable national and local codes for
supply gases and supply gas plumbing. Speak with a licensed plumber for more information
about the codes in your location.
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Any installation, modification, or repair of supply-gas equipment or plumbing systems must be
done by a licensed plumber.
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You can use flexible hoses that are designed to carry the appropriate gas and are rated for the correct
pressure. Other hoses can crack and leak.
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For the best results, use the recommended torque specifications for plumbing and hose fittings in the
Torque specifications for gas or water plumbing and hose connections on page 57.
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You can use rigid copper pipes.
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Do not use steel or aluminum.
Supply-gas hoses are available from Hypertherm. Refer to Cable, hose,
and lead parts on page 423. All installer or user-supplied equipment
must obey applicable national and local codes for supply gas and supply
gas plumbing. Speak with a licensed plumber for more information about
the codes in your location.
Qualifications and Requirements
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51811530Instruction ManualXPR460