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SETUP AND OPERATION OF EQUIPMENT
This chapter will describe how to set
up a typical oxy-acetylene welding or cutting outfit, and how to light the torch
and adjust the flame. Precautions which
must be observed during setup and lighting will be covered. The next
chapter (7) will cover precautions
which should be observed in the course of actual welding and cutting operations.
Please do not attempt to set up and
operate an outfit until you feel thoroughly familiar with the content of both
make-up of a complete outfit was given in the opening paragraphs of Chapter 5.
Please make sure that you have
on hand everything needed before you start to set up. Attaching
Pressure-Reducing Regulators Fasten
the cylinders to be used in an upright position so that they cannot be knocked
or pulled over. If
cylinders are not on a suitable cylinder
cart, they should be securely fastened, with chain or equivalent, to a work-
bench, wall, or post. As explained
earlier in Chapter 3, acetylene cylinders should never be stored or used other
than in a vertical position.
Remove the protective cap from the
oxygen cylinder, and from the acetylene cylinder, if so equipped.
Crack the cylinder valves.
Stand so that the gas leaving the cylinder outlet will
not be directed onto your face or clothing.
Open the valve quickly about one-quarter of a turn, then close it immediately.
This will clear the valve outlet
opening of accumulated dust or dirt which might, if not blown out, mar the seat
of the regulator nipple or be carried
into the regulator. PRECAUTION: Never crack
a fuel gas cylinder valve near other welding or cutting work
in progress, or near sparks, flame,
or other possible source of ignition. Connect
the oxygen regulator to the oxygen cylinder and the acetylene regulator to the
acetylene cylinder. If
the acetylene regulator and the acetylene cylinder have different threads, it
will be necessary to use an adaptor between
the regulator and the cylinder. As stated in Chapter 5, two quite different acetylene
cylinder connections are
widely used in the U. S.