Aligning The Drilling System With The Hole Center; Positioning The Drilling System When Fastened With An Anchor; Connecting The Electric Supply Cord And Water Supply Hose - Hilti DD 30-W Manual De Instrucciones

5.3.7 Fitting the core bit
WARNING
Risk of injury caused by flying fragments or debris. Use of cracked, broken or badly worn core bits may
result in flying fragments (parts of the workpiece or broken core bit) presenting a risk of injury to the operator
or bystanders, even outside the working area.
▶ Check the core bit for cracks, breakage, heavy wear or other damage each time before use and replace
the core bit if necessary.
Diamond core bits must be replaced when the cutting performance and/or rate of drilling progress
drops significantly. This generally is the case when the segments reach a height of less than 2 mm.
Spraying the chuck with Hilti lubricant spray at regular intervals makes it easier to fit the core bit.
1. Unplug the supply cord from the power outlet.
2. Open the chuck by pulling the chuck locking lever upwards as far as it will go.
Check that the core bit connection end and the chuck are clean and undamaged.
3. Tip the water collector about its mounting axis as far as it will go.
4. Guide the cutting edge of the core bit into the sealing ring in the water collector from above.
5. Align the connection end of the core bit with the corresponding openings and insert it into the chuck.
6. Turn the core bit as far as it will go while applying light pressure.
7. Secure the core bit by closing the chuck locking lever.
5.3.8 Connecting the vacuum removal system
1. Make sure that the suction hose from the all-purpose vacuum cleaner is securely connected to the core
drilling machine's water collection hose. Use a hose adapter for this purpose.
2. Connect the all-purpose vacuum cleaner suction hose to the vacuum cleaner.
3. When drilling overhead, use the retaining clip on the side handle to secure the water collection hose.
5.4

Aligning the drilling system with the hole center

5.4.1 Positioning the drilling system with the vacuum base plate
1. Check to ensure that the drilling system holds securely (the pointer on the pressure gauge must be in the
green area).
2. To position the drilling system exactly at the hole center, press the vacuum release valve and then adjust
of the position of the drill stand.
3. Once the drilling system has been positioned correctly, release the vacuum release valve and press the
drilling system against the working surface.
4. Level the vacuum base plate by turning the 4 leveling screws.
5.4.2

Positioning the drilling system when fastened with an anchor

1. In order to position the drilling system exactly at the hole center, carefully slacken the clamping spindle
until the drill stand is free to move and then correct its position.
2. Level the drill stand adapter plate by turning the 2 leveling screws.
3. Tighten the clamping spindle securely when the drilling system is correctly positioned.
5.5

Connecting the electric supply cord and water supply hose

WARNING
Water running out presents a risk of electric shock! A damaged or incorrectly fitted O-ring at the water
connection on the machine, excessively high water pressure, faulty hose connections and leaks in the water
supply system may result in leakage of water and a risk of electric shock.
▶ Regularly check the machine, water connections, hoses and hose connectors for damage and
make sure that the maximum permissible water supply pressure of 6 bar is not exceeded.
*2048397*
Printed: 04.07.2019 | Doc-Nr: PUB / 5283477 / 000 / 06
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2048397
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