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3. CONTENTS
Fig.1
Fig.1A
4. PREPARATION
WARNING! DANGER OF EXPLOSION. All parts which come into contact with acetylene or oxygen, including hands and tools, must be
‰
free from oil or grease. If grease or oil is found on a cylinder, discontinue its use immediately and contact your gas supplier.
4.1.
Preparing the cylinder. Make sure that the cylinder to be used is safe and properly secured as noted in the safety precautions.
4.2.
Whilst standing on one side 'crack' each cylinder valve. 'Cracking' is to quickly open and close the valve allowing gas to escape and
clear the valve of any foreign bodies.
4.3.
CONNECTING GAS REGULATORS TO THE CYLINDERS
NOTE: PRESSURE REGULATORS SHOULD BE TREATED AS PRECISION INSTRUMENTS AND SHOULD NOT BE JARRED
OR KNOCKED.
4.3.1.
Function of the regulators. Fitted to the outlets of the gas cylinder valves, the pressure regulators reduce the pressure of the gas
from cylinder pressure to the constant lower pressure required for the operation of the equipment. The left hand gauge indicates the
pressure in the cylinder. The right hand gauge indicates the pressure of the gas being delivered to the torch. Pressure reduction
within the regulator occurs in two stages.
4.3.2.
Attach oxygen and acetylene regulators to the appropriate cylinders. On each gauge ensure the inlet filter is in place and is not
blocked or contaminated. If an '0' ring is fitted to the inlet, check for damage and replace if necessary with an '0' ring recommended
by the regulator manufacturer. Do not use any form of jointing paste or tape between regulators and cylinder valves. Before
attaching the gauges wipe the fittings with a clean dry cloth. Screw the union at the base of each regulator to the appropriate
cylinder by hand. Ensure that the gauge is correctly orientated so as to be seen properly by the operator in use. To tighten, turn
CLOCKWISE for OXYGEN, and ANTI-CLOCKWISE for ACETYLENE. A wrench should be used to ensure tight connections.
4.3.3.
Close the regulators by turning the adjusting screws anti-clockwise to relieve the pressure on the diaphragm before opening the
cylinder valve. If this is not done, pressure from the cylinder can damage the diaphragm and render the regulator inoperative.
© Jack Sealey Limited
1
Welding torch
SGA2
2
No:2 nozzle
3
No:3 nozzle
4
No:4 nozzle
5
1/16" cutting nozzle
6
3/64" cutting nozzle
7
1/32" cutting nozzle
8
Cutting torch
9
Nozzle cleaning tools
SGA6
Original Language Version
SGA2.V2, SGA6.V2 Issue:2 (1,4) 10/08/21
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