Attention! It is important that the drill rig is tightly connected with the
ground. Incorrectly fixed drill rigs can cause injuries of the operator
and damages on the drilling unit. Movements during drilling cause
hits of the drill bit against the drilling wall, what can lead to a breaking
out of the segments. The drill bit can also cant in the bore hole, what
causes damages on this.
Vertical drilling
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Switch the PRCD on.
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Open the water supply.
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Turn the motor on without touching the surface with the drill bit.
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Turn the handle to lower the drill bit until it touches the surface.
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In order to reach an exact centring of the drill bit, keep the feed low
for the first centimeter of cutting depth.
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Then you can drill faster. A drilling speed which is too low reduces
the power. On the other hand, when the drilling speed is too high,
the diamond segments quickly become blunt.
You have hit reinforced iron when you recognise while drilling that the feed
rate gets very low, when you need to use more force, or when the water
leaking from the bore hole clearly shows some metal chips.
Reduce the pressure on the drill bit to cut through the reinforced iron without
any problems. You can increase the pressure again when you have cut
through the reinforced iron.
Inclined drilling
Drilling
Loosen both Allen screws M10 with the
enclosed wrench SW 8
Loosen the clamp lever on the bracing.
Position the column in the appropriate angle and
tighten both screws and the clamp lever again.
After drilling put the column back in the
90°position.
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