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AC/OX CUTTING/WELDING/BRAZING Connection

Operation

1. Never use a regulator for gases or pressures for which it was not designed. Before connecting up, make sure that the outlet union on the cylinder valve and the connector of the regulator fit each other. Never force a connection that does not fit.

2. Before connecting the regulator to the gas cylinder, blow the cylinder valve clean by opening it for a moment. Do not stand in front of the outlet or hold your hand in front of it whilst blowing it clean. Valves of cylinders containing flammable gases must never be blown clean if there is any risk of ignition of the gas. 3. Check the inlet union gasket and replace it if it is damaged. Make sure to use original gaskets and not home made ones, which may be a source of danger.

4. Screw the regulator to the cylinder valve. Use a thick spanner to avoid damaging the connection nut. 5. Between an Acetylene or Oxygen regulator and the hoses in use a flashback arrestor should always be installed.

1. Make sure that the regulator is closed by turning the regulating screw so far out that it runs freely on its threads.

2. Open the cylinder valve slowly until the contents pressure gauge shows the cylinder pressure (the working pressure gauge should not move). Then open the cylinder valve fully. 3. Set the desired working pressure by turning the regulating screw inwards until the correct working pressure can be read on the working pressure gauge. For correct pressure see the operating instructions for the torch you are using.

4. During interruptions, or when finishing work, close the cylinder valve. Relieve the pressures on the regulator until both gauges show zero.

5. Shut the regulator by turning the regulating screw outwards until it runs freely on its threads.

NOTE:

Regulators and other equipment for Oxygen must never be lubricated with ordinary oil or grease, as this brings the risk of explosion. Use only the lubricants prescribed by the manufacturer. If a pressure gauge does not register zero when the pressure is released, or it has other defects, it must be replaced. Check all connections for leakage by covering with soapy water or the like. As a rule, such leaks can be stopped by carefully tightening the screwed connection at the point in question. If not, the seal or the complete part must be replaced.

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Apart from replacing damaged or faulty gauges, repairs should never be attempted on gas regulators. Faulty, old or corroded regulators should be replaced. Internal seals and membranes will deteriorate with time, and as a rule gas regulators should be replaced with maximum 5 years intervals. This also applies to flashback arrestors.