Hypertherm XPR300, Instruction Manual, Page: 125 / 402

Installation
3
XPR300 Instruction Manual 809480 125

These installation steps are for the VWI or OptiMix gas connect console.

If you have a Core gas connect console, see Connect supply gases to the gas connect
console (Core) on page 121.
Hypertherm recommends an internal diameter of 10 mm (0.375 inch) for supply gas hoses that are
76 m (250 feet) or less. Make sure that you have the correct supply gas hoses before you connect
them. See
How to identify and ready the hoses, cables, and leads on page 97. Table 19 describes
the recommended sizes for gas fittings.
Table 19 – Recommended sizes for gas fitting
To decrease the risk of leaks in the system, make sure to tighten all connections to the torque
specifications in
Table 17 on page 119.
After installation is complete, pressurize the entire system and look for gas leaks. A licensed
plumber can do this for you.
CAUTION
All hoses, hose connections, and hose fittings used for supply gas plumbing must be designed
for use with the appropriate gas and pressure rating.
NEVER connect a supply gas to a hose, connection, or fitting that is not designed for that gas
type or pressure.
If you replace any fittings on the consoles, or if you use the wrong fittings, it can cause the
internal valves to malfunction because contaminants can get into the valves.
Fitting type Recommended sizes for gas fittings
N
2
or Ar 5/8 inch – 18 RH, internal (inert gas) “B”
Air or H
2
O 9/16 inch – 19, JIC, #6
F5 or H
2
9/16 inch – 18, LH (fuel gas) “B”
O
2
9/16 inch – RH (oxygen)