BAK Thermoplastic Welding Technology AG
6
ADJUSTING THE HOT WEDGE
The hot wedge can be adjusted depending on the material thickness.
By cold wedge, engage the welding machine onto the geomembrane to be welded.
Engage the wedge onto the geombembrane.
Lower the pressure lever after the needed pressure has been adjusted.
Remove the lower part of the chain housing.
Loosen the hexagon cap screw which is inside the chain housing.
Loosen the hexagon cap screw of the rear roller guide.
Adjust the rear roller guide to the correct height. The distance between the rear roller guide
and the wedge should be the same like the thickness of material to be welded.
Tighten the hexagon cap screw of the rear roller guide.
Loosen the adjustment screw of the wedge. The wedge equalizes automatically to the thick-
ness of the material to be welded.
Tighten the adjustment screw of the hot wedge.
Adjust the front guide roller to the correct height. The distance between the inserted material
and the front guide roller should be approx. 1mm.
Tighten the hexagon cap screw in the chain housing keeping blocked the correspondent
screw of guide roller.
Assemble chain guard lower part.
Unhook the pressure lever and move the wedge back.
Check that all the screws are well tight and proceed with a welding test.
MAINTENANCE
Clean the hot wedge with a wire brush (5201330) at the end of a working day.
Clean the drive/pressure rollers with a wire brush.
As required, treat the chain with a suitable spray.
After use, always check that the mains cable and plug are not damaged.
WARNING NOTICE
If you are not using the machine for a longer period of time, switch of the heat. Otherwise, some
parts can be heated up to more than 70°C.
Never cool down the wedge with water, cooling spray, etc.
