Lighting And Using The Cutting Torch. HobartWelders OXY-FUEL OUTFITS 770502, 770974

6-3.

Lighting And Using The Cutting Torch

3 5 4 2

1 rubbergloves weldgloves earmuffs

NGO’s tools/

6 ear plugs tools/ helmet weldshield faceshield

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Always purge gas from the system before lighting torch to prevent a possible mixed-gas explosion.

Purge gas in a well ventilated area and away from flame or sparks. See

Sections 6-1 and 6-2.

Do not use matches or a cigarette lighter to ignite the gas.

See Sections 6-1 and 6-2 for oxygen

1 Spark Lighter

2 Oxygen Valve

3 Preheat Oxygen Valve earmuffs cclamp ear plugs rpmmeter

Failure to force a sufficient amount of fuel gas through the tip will cause the tip to overheat and may cause a flashback or backfire.

Step 5.

Slowly open the preheat oxygen valve on the cutting attachment; a white-hot feather (flame) appears.

Step 6.

Slowly add oxygen until the feather begins to disappear into the bright cone at the end of the tip. This produces a neutral flame (ratio of fuel to oxygen is 1:1).

Operating The Cutting Torch

Step 1.

Hold the torch tip about 1/4 in. (6 mm) from the metal to be cut.

electrodewrench benchvise helmet weldshield

NOTICE – Shut down the torch in the correct sequence or the torch may be damaged.

Oxygen must be released from the system first or residual fuel in the handle or fuel hose may burn. Fuel cannot burn without oxygen.

Step 1.

When finished cutting, release the cutting lever. Close the oxygen preheat valve on the torch handle first and then close the fuel valve on the torch handle.

tape popriveter

Step 2.

Turn valves at fuel and oxygen cylinders clockwise to the closed position.

Step 3.

Open the fuel valve on the torch

4 Fuel Valve

5 Cutting Lever

6 Neutral Flame — Even Mixture Of Fuel

And Oxygen snapringpliers

Lighting The Torch linepliers oilcan

Step 2.

Heat the metal until it is bright red

(about 1550° F or 843° C).

Step 3.

Slowly depress the cutting lever on the cutting attachment. Let the oxygen stream burn through the metal, then compencil fusepuller hacksaw handle to relieve pressure; both gauges on the fuel regulator should indicate zero (0) pressure. Close the fuel valve on the torch handle.

mallet

Turn fuel regulator adjustment hanbelttensiongauge scissors dle counterclockwise until there is no pressealant_1

Step 1.

Hold the spark lighter near torch tip.

Step 2.

Slowly open the fuel valve on the torch handle 1/4 turn and quickly squeeze the spark lighter to light the flame.

Step 3.

Slowly open the oxygen valve on

Step 5.

Open the preheat oxygen valve on the torch handle to relieve pressure; both gauges on the oxygen regulator should indicate zero (0) pressure. Close the preheat oxygen valve and oxygen valve on the torch

Torx sealant_2

Step 4.

tip_dress the black sooty smoke disappears and the linepliers pencil

Step 6.

Turn oxygen regulator adjustment handle counterclockwise until there is no fusepuller mallet faceshield scissors tape

SOAP

T_allen pinextractor (141761) pinextractor2 bar soap

Liquid soap sealant_2

Paper Clip

OM-251341 Page 22 pump pliers

Torx tip_dress

Needle-Nose Vise Grip

T_allen

Ground Strap

Thermal Compound SOAP

Trowel pinextractor (141761) bar soap

Chisel

Liquid soap Paper Clip

Needle-Nose Vise Grip

Ground Strap

Thermal Compound

Trowel

Chisel

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OM-222 Page 1

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