EN - 9
PSB
5 Putting into operation
5.1 Functional description
The torch and power source together form an operating unit which provides a
plasma arc for cutting when supplied with the appropriate operating resources.
When cutting, compressed air is ionised in the cutting nozzle by high-frequency
pulses. In PSB 31 KKS and KZS, this is done by means of short-circuit ignition.
The initial arc produces conductive plasma, which is accelerated in the nozzle
and directed to the workpiece. The working arc is struck between the cutting
torch electrode and the workpiece. The workpiece material is melted by the
energy of the impact, the dissociation and the ionisation and blown out by the
kinetic energy of the plasma jet. The compressed air is used to cool the cable
assembly and the cutting torch.
5.2 Manual cutting torch
The torch head is positioned at an angle of 100° (PSB 31) or 105°
(PSB 60/121) to the handle axis.
The plasma nozzle, protective cap, electrode and insulator are all wear parts
that can be replaced by inserting or screwing on spare parts. To protect the
operator, the torch is equipped with a retaining clamp, which automatically
interrupts the inrush current circuit upon disconnection of the wear parts.
Accessories such as torch carriage, torch circular guide and spacer can be
attached and locked onto the outer contour of the protective caps.
Accessories
• Torch carriage for straight cuts or additionally equipped with circular
guide, prepared for cutting circular components measuring ø100 to
ø1000 mm. (The torch carriage is clamped to the protective cap)
DANGER
Risk of injury due to unexpected start-up
The following instructions must be adhered to throughout all maintenance,
servicing, assembly, disassembly and repair work:
• Switch off the power source.
• Close the gas supply.
• Close the compressed air supply.
• Switch off the entire welding system.
NOTICE
• Please take note of the following instructions:
3 Product description on page EN-5
• The system must only be installed and put into operation by qualified
personnel (in Germany, see TRBS 1203).
