Switching The Machine Off; Removing The Core From The Hole; Disposal Of Drilling Slurry - Hilti DD 30-W Manual De Instrucciones

6.4

Switching the machine off

1. Switch the machine off when the desired drilling depth is reached or when the through-hole has been
completed. If you are using the switch lock, release the lock by pressing the on/off switch.
WARNING
Risk of injury! The core, or pieces of it, may be hurled out if the water collector is lifted away from the
working surface while the core bit is still rotating. This presents a risk of injury.
▶ Lift the water collector away from the working surface only after the core bit has stopped rotating.
2. Withdraw the core bit from the hole as the machine slows down, but before it stops.
➥ The water supply (water on/off) is controlled automatically by the machine's on/off switch.
6.5 Removing and emptying the core bit
1. Unplug the supply cord from the power outlet.
CAUTION
Risk of injury when changing the tool! The tool becomes hot as a result of use. It may have sharp edges.
▶ Always wear protective gloves when changing the tool.
WARNING
Risk of injury. The drilled-out core, or parts of it, may fall out of the core bit.
▶ Take care to ensure that the core doesn't fall out of the core bit inadvertently. Remove all parts of the
core from the core bit.
2. Open the chuck. To do this, pull the chuck locking lever up as far as it will go.
Hold the machine with the tip of the core bit pointing slightly downwards so that the water
remaining in the core bit can flow out.
3. Rotate the core bit as far as it will go.
4. Pull the core bit out of the chuck.
5. Tilt the core bit slightly away from the imaginary extension of the chuck axis.
6. Pull the core bit out of the water collector.
7. Hold the core bit securely and shake it until the core falls out through the connection end towards the
rear. If parts of the core remain stuck in the core bit, tap the end of core bit vertically downwards against
a soft object (wood or plastic) or use a thin rod (e.g. the depth gauge) to push out the core.
8. Close the chuck locking lever.
6.6

Removing the core from the hole

1. While rotating it slightly, push the core breaking tool into the hole as far as it will go.
Check that the diameter of the core breaking tool (optional accessory) matches the diameter of
the core bit used.
2. Break the core by applying slight lateral pressure to the core breaking tool.
3. Pull the broken core out of the hole with the core breaking tool.
4. Use a rule to measure the hole depth actually reached.
6.7

Disposal of drilling slurry

1. Collect the drilling slurry (e.g. using a wet/dry industrial vacuum cleaner).
2. Allow the drilling slurry to settle and dispose of the solid material at a construction waste disposal site.
The addition of a flocculent may accelerate the separation process.
3. The remaining drilling water (alkaline, pH value > 7) must be neutralized by the addition of an acidic
neutralizing agent or diluted with a large volume of water before it is allowed to flow into the sewerage
system.
*2048397*
Printed: 04.07.2019 | Doc-Nr: PUB / 5283477 / 000 / 06
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2048397 English 41