ROTHENBERGER ROFLASH - Handbuch (Seite 25)

ENGLISH 21
Î Open the shut-off valve (7) on the oxygen pressure regulator, the adjustment valve for
oxygen (16) on the handle or hand-held cutting torch (15) and the cutting oxygen valve (22)
on the cutting attachment (20) or hand-held cutting torch.
Î Adjust the operating pressure by turning the pressure adjusting valve (5) on the cylinder
pressure regulator for oxygen (3) (refer: section1).
Î Close cutting oxygen valve (22) and adjustment valve for oxygen (16).
Î Open the shut-off valve (8) on the fuel
Î gas pressure regulator and adjust the fuel gas pressure by turning the pressure adjusting valve
(6) (refer: section 2)
Attention
It is important, however, to ensure that the line pressure is at least 0.2 bar higher than the
values mentioned in section 2!
Ignition and adjustment of the flame
Î
First open the adjustment valve for oxygen (16) on the handle or hand-held cutting torch (15)
and then open the heating oxygen valve (21) on the cutting attachment (20) and the
adjustment valve for fuel gas (17) on the handle or hand-held cutting torch (15).
Î Ignite the escaping gas mixture immediately. Adjust the flame to neutral (same as welding
flame) by making readjustments on the heating oxygen valve (21) or adjustment valve for
oxygen (16) and adjustment valve for fuel gas (17).
Î Fully open the cutting oxygen valve (22) and readjust the oxygen pressure (refer: section 2) as
required. Adjust the flame to neutral again. Close the cutting oxygen valve (22) again
Beginning to cut
Î
Put the torch in first cut position and use the heating flame to heat up the workpiece to
ignition temperature, approximately bright red
Caution! Do not melt down the material! Then open the cutting oxygen valve (22) and
move the torch in the cutting direction.
Cutting speed
The correct cutting speed can be recognized by the slag discharge, vertical flying sparks and
cutting noise
correct
to high
to low