Tweco Victor Torch Handles,Cutting Attachments - Manual (Page 10)

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regulator, Do Not use the regulator. Have the regulator cleaned
or repaired by a qualified repair technician.
2. Connect the oxygen hose to the oxygen regulator. Tighten the
connection firmly with a wrench.
3. Always open the cylinder valves slowly and carefully and check for
leaks on the regulator and cylinder valve connections.
4. Momentarily open and close the cylinder valve (commonly referred
to as “cracking”). This dislodges any loose contaminants that may
be present.
CaUtion
Open the cylinder valve only slightly. If the valve is opened too
much the cylinder could tip over. When “cracking” the cylinder
valve, Do not stand, nor have anyone stand directly in front of
the valve opening. Stand behind or to one side. Crack the cylinder
valve in a well-ventilated area only. If an acetylene cylinder sprays
a mist when it is cracked, let it set for 30 minutes. Then try to
crack the cylinder valve again. If the problem persists, contact
your gas supplier.
warning
Never stand, nor have anyone stand in front or behind a regulator
when opening the cylinder valve. Always stand so that the cylinder
is between you and the regulator.
5. Adjust the oxygen regulator to allow 3 - 5 PSIG to pass through the
hose. Allow oxygen to flow for 5 - 10 seconds to clear the hose of
dust, dirt, or preservatives. Shut off the oxygen flow.
6. Attach and clear the fuel hose in the same manner.
warning
Clear hoses in a well-ventilated area. The escaping gases create
conditions for fires and explosions. Keep hoses clear of any falling
metal, slag, or sparks. Never allow hoses to become coated with
oil, grease, or dirt. This could conceal damaged areas on the hoses.
Examine the hoses before attaching the torch handle or regulators.
If any cuts,burns, worn areas, cracks, or damaged fittings are found,
repair or replace the hose.