Weka KS50 Mode D'emploi page 11

4.1.2 Fixing with dowels
Use only suitable steel dowels, resp. anchors with a drilling diameter of at least 16 mm and a thread bars
of at least M12. Therefore consider the requirements of VDMA. Take care that the dowel is absolutely
tight and the required tear out force are not exceeded. Always put the dowel as near as possible to the
drill column. Adjust the drill rig by means of the attached water levels before you tighten it via the dowels.
4.1.3 Fixing with vacuum
For fixing the drill rig with vacuum, you need a KS50 vacuum kit and a vacuum pump with a throughput
of at least 6 m²/h and a vacuum of at least 80%.
Take care that the drill rig is solidly fixed. Turn the jackscrews at the rig foot against the fixing surface
until the sealing ring is released clearly.
On vacuum fixtures you have to take care, that the undergournd surface is not too rough and not porous.
Attention: Vacuum fixing is not suitable on plaster or masonry. Never drill overhead
with vacuum fixing.
Before using the vacuum kit, check the seals (29, 30) on wear.
Fix the vacuum adaptor (28) by inserting and turning in the slot of the rig foot (1).
4.1.4 Fixing with quick bracing column
The drill rig can be fixed (braced) with a quick bracing column between rig foot and wall or ceiling. Only
use suitable bracing columns.
4.2 Working positions
When working on floor areas of stories, the core can fall into the lower story when drilling through and
cuase serious injuries and damages. Ensure that noboby remains under the drilling area. Protect this
area.
Before drilling in walls, you have to make sure that when drilling through, nobody can be injured.
Overhead drillings can only be made with suitable water collecting devices. Protect the drill rig
additionally.
When drilling inclined, in the start of drilling phase a lower drilling pressure has to be chosen, for avoiding
that the drill bit runs uneven.
4.3 Diamond core bit
Only use suitable high-quality diamond tools.
Ensure that the diamond segments are sufficiently larger than the inner and outer diameter of the drill bit
tube.
Apply water-resistant grease to the tool thread so that the tool can be easily loosened.
Ensure that the radial run out at the diamond segments of the drill bit is no greater than 1 mm
(eccentricity).
Only use suitable wrenches for changing the core bit. Thereby hold the drilling spindle with another
wrench.
Never use a hammer or something similar to open the core bit. If necessary elongate the
wrench.
4.4 Electrical connection of the drilling machine
Therefore please consider the relevant regulations of the manufacturer.
5. P U T T I N G I N T O O P E R A T I O N
5.1 Adjusting the drilling angle (not on E versions)
Remove the lower hexagon head screw on the drill column from the rig foot. Loosen the hexagon head
screw which is applied above and the clamping nut on the brace. Adjust the drill rig to the desired drilling
angle and tighten the clamping nut and the hexagon head screw again.
Attention: the drill rig may only be put into operation when clamping nut and hexagon
head screw are again tightened.
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