MetFab - Air Products Welder's Handbook - Flipbook - Page 52
Shutting down
There are two scenarios for shutting down
your system, (i) a short term shut down, e.g.
when repositioning between cuts, etc. or (ii)
closing down e.g. when stopping for a lunch
break, at the end of a shift or to change a
cylinder etc.
Short-term shut down:
Closing down:
• Close the fuel gas (red) torch valve.
• Close the fuel gas (red) torch valve.
• Close the oxygen (blue) torch valve.
• Close the oxygen (blue) torch valve.
• Stow the hoses in a safe manner and
ensure the hot torch nozzle is not in
contact with any part of the system,
including the cylinders.
• Close the cylinder valve on both
cylinders.
• Open the fuel gas (red) torch valve, vent
the line and close the valve.
• Open the oxygen (blue) torch valve, vent
the line and close the valve.
Never open both torch valves at the same
time when venting the system.
• Now fully wind anti-clockwise the
pressure adjusting screw on each
cylinder regulator. All pressure
regulators should now read zero.
• Stow the hoses in a safe manner and
ensure the hot torch is not in contact
with any part of the system, including
the cylinders.
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