5. INSTRUCTIONS OF USE
EN
5.1. Choose the welding tip suitable for thickness to weld (see table 8), screw it on the
PT
torch tightening with wrench of tip-holder till reaching gas tightness; then follow
instructions of chapter "CONNECTING THE TORCH (2)".
EN
5.2. The S-4 P torch works on the INJECTOR principle and the following method of lighting
& closing should therefore be adopted.
5.3. Check that both oxygen & gas valves of the shank as well as the regulator adjusting
valves are closed. SLOWLY open the gas cylinder valves.
5.4. Set on the oxygen & gas regulators the recommended working pressure for each
thickness (see table 8).
5.5. Open one turn, first the oxygen valve on the shank & wait that oxygen flows out; it will
produce a noise in the flexible hose. Follow same procedure for the fuel gas valve of
the torch.
5.6. Light the flame preferably with special gas lighter.
5.7. Adjust with both valves on the shank until obtaining the suitable heating flame. Watch
the flame variation pushing on the oxy-cutting lever, while adjusting with the valves if
necessary. Check on regulators that preset pressures remain the same. On the
contrary, adjust till the recommended values are reached.
5.8. To extinguish the flame, first close the gas valve & then the oxygen one on the shank.
6. MAINTENANCE
6.1. Protect the torch from damage (check visually at regular intervals).
6.2. Clean the torch at regular intervals to avoid presence of grease or dirtiness. When
necessary, clean the holes of the cutting nozzles with the cleaning needles supplied (art
Cod. 2305203.
6.3. Check that flexible hoses are in good condition & remove parts that are damaged.
6.4. Check that connections are secured with hose clamps that cannot hurt the hose by
excessive pressure (to avoid cutting of the hose).
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S-4 B WELDING TORCH