The torch flame should not be too long and must be heated with a low flame.Stop use, should first close the acetylene regulating valve, and then close the oxygen regulating valve, in order to prevent the flame back attack and produce soot.In the process of use if the occurrence of tempering, should quickly close the acetylene regulating valve, and close the oxygen regulating valve.After the tempering is extinguished, open the oxygen regulating valve, blow away the residual flame and ash in the welding torch, and put the front part of the handle of the welding torch in the water to cool.

If the adjustment is not normal or there is fire extinguishing phenomenon, should check whether there is air leakage or pipeline blockage, and repair.Ignition can also first open the acetylene regulating valve, acetylene and smoke ash, immediately open the oxygen to regulate the flame.This method can avoid the roaring explosion phenomenon when ignition, and in the oxygen after the occurrence of tempering immediately shut down oxygen, to prevent the tempering explosion, this ignition method can also be easier to find whether the welding torch is blocked and other problems.

In the process of use, if the gas passage or valve is found to leak, it should stop working immediately and eliminate the leak before continuing to use.After the plasma welding torch is stopped in use, it should be hung in the appropriate place, or remove the rubber pipe and store the torch in the tool box. It is strictly prohibited to store the welding torch with air source in the tool box.Ignition should be slightly open the oxygen regulating valve, and then open the acetylene regulating valve.After the plasma torch injection and absorption check is normal, the acetylene rubber tube is connected to the acetylene joint.It is generally required that the oxygen intake joint must be firmly connected with the oxygen rubber pipe, that is, tightened with clamps or annealed wire.And acetylene intake joint and acetylene rubber pipe should avoid connecting too tight, with no air leakage and easy to seethe and easy to pull off the standard.At the same time, other gas channels, gas regulating valves and welding nozzles should be checked for normal and leaky air.The flame should be adjusted immediately after ignition so that the flame reaches the normal shape.