Tweco Victor Torch Handles,Cutting Attachments - Manual (Page 19)

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material contained in the hose or regulator that could restrict flow through
the flashback arrestor.
Flow restriction and torch overheating results if dirt or “oily” LPG residuals
are allowed to flow into the flashback arrestor and cause clogging. Make
sure not to draw liquid.
Always store and use cylinders in the upright position.
5.03 LeAk testING
The system
MUst be tested for leaks before lighting the torch. To leak test
the system perform the following steps.
1. Be sure that both the oxygen and fuel control valves on the torch
handle are closed.
2. With the oxygen cylinder valve open, adjust the oxygen regulator
to deliver 20 PSIG.
3. With the fuel cylinder valve open, adjust the fuel regulator to deliver
10 PSIG.
4. Close both the oxygen and fuel cylinder valves.
5. Turn the adjusting screws counterclockwise 1/2 turn.
6. Observe the gauges on both regulators for five minutes. If the gauge
readings do not change, then the system is leak tight. If there is
a leak, use an approved leak detection solution to locate it. If the
inlet gauge reading decreases, there is a leak at the cylinder valve
or inlet connection. Tighten the inlet connection after the pressure
has been released from the regulator. If the inlet connection still
leaks try another cylinder. If the same leak develops, take the
regulator to a qualified repair technician. Never tighten a cylinder
valve. If the cylinder valve is leaking, remove the regulator from the
cylinder, place the cylinder outdoors and notify your gas supplier
immediately. If the delivery gauge reading decreases, there is a
leak at the regulator outlet connection, within the hose, at the
torch inlet connection or at the control valves on the torch handle.
Tighten the regulator outlet connection and the torch handle inlet
connection after the pressure has been released from the system. If
the connections are still leaking, take the regulator or torch handle
to a qualified repair technician. If the hoses are leaking, replace
them. If the high pressure gauge drops and at the same time the