Welding - Virax P160 B PRO BASIC Manuel D'utilisation

clean brush.
CAUTION! Do not touch the trimmed, ready to weld surfaces. Ensure that the surfaces are free of
any and all containments and foreign objects!

3.2.3. Welding

Risk of injury! Keep a safe distance from the machine when mechanically closing
clamps and moving workpieces. Keep hands, limbs and objects such as clothing, tools
etc. away from running machine!

While moving workpiece ends to welding position, read the workpiece drag pressure from the
manometer on the hydraulic unit.
The workpiece drag pressure is the minimum amount of pressure required to set the workpiece
depending on weight and length – in axial motion. This value must be precisely determined; it will be
necessary to engage and disengage the machine and workpieces several times and to set the
pressure adjustment valve until the machine almost comes to a standstill. Add the drag pressure to the
confor mation, heat-penetration and joint pressure.
 Insert the heating plate into the basic unit between the two workpiece ends and make sure that the
heating plate's supports are seated in the notches on the take-off device.
 Engage the machine, set and maintain the required conformation pressure plus drag pressure.

As soon as sufficient bead has formed around the entire circumference of the workpiece
ends, slowly release the pressure by slowly opening the relief valve.
Set the pressure so that workpiece ends have uniform almost pressureless contact to the
heating plate (warm up).
 Now close the relief valve. Ensure that the workpiece ends still have contact with the heating
plate.
 After the warm-up phase, disengage workpieces, remove the heating plate and re-engage
the workpieces. Increase the pressure linear to the respective joint pressure and maintain that
pressure until the joint is fully cooled.
 Regularly check the pressure and pump it back up when necessary. If the pressure loss is
excessive, have the hydraulic system checked.
CAUTION: Press and hold the control lever for the first 20 to 100 seconds then
release (neutral switch position).
 Put the heating element back into the storage case.
 After the joint has fully cooled, slowly release the pressure by opening the relief valve,
unclamp the workpieces and remove from the machine.

Disengage the basic unit, write protocol. The machine is now ready for the next welding
cycle.
All welding parameters can be found in the enclosed welding tables.
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