Portable Oxy-Fuel Welding and Cutting Outfit
Maintenance (Cont.)
Leak test check valves at least every three months, as follows:
1.Shut off fuel cylinder valve and disconnect hose from check valve.
2.Set oxygen regulator to 5 PSI and open all gas valves on torch and cutting attachment.
3.Plug torch tip and check for reverse flow to fuel gas check valve. Use soapy water or immerse in water to check for leak. Set pressure to zero after test.
4.Reconnect fuel gas hose and disconnect oxygen hose.
5.Set fuel cylinder valve to 5 PSI and inspect for leaks in oxygen check valve.
| Replace leaking | |
! WARNING | ||
check valves or | ||
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have serviced by a qualified technician.
6.Reconnect hose and purge system before use.
HOSES
Examine the hoses carefully before
each use. If cuts, burns, worn areas or damaged fittings are found, replace the hose.
ACETYLENE CYLINDERS
If horizontal stowage is necessary,
or an acetylene cylinder is inadvertently left lying in a horizontal position, it must be placed in an upright position for a minimum of two hours before it can be used. Otherwise, acetone in which the acetylene is dissolved will be drawn out with the gas. By dissolving acetylene in acetone, pressures above 15 PSIG are safely attainable. If enough acetone is removed, the cylinder may become unstable and explode.
Notes
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