Removing The Diamond Core Bit (Bi+ Chuck) - Hilti DD 120 Manual De Instrucciones

5. Connect a wet-type industrial vacuum extractor to the water collector or establish a hose connection
through which the water can drain away.
5.7 Inserting a diamond core bit (BI+ chuck)
DANGER
Risk of injury Fragments of the workpiece or of broken insert tools may be ejected and cause injury beyond
the immediate area of operation.
▶ Do not use damaged insert tools. Check the insert tools for chipping, cracks, or heavy wear each time
before use.
CAUTION
Risk of injury! Inadvertent starting of the product.
▶ Unplug the supply cord before making adjustments to the power tool or before changing accessories.
Replace diamond core bits as soon as their cutting performance and/or rate of drilling progress drops
significantly. This generally is the case when the diamond segments wear to a height of less than 2
mm (1/16 in).
A 27 mm open-ended wrench is required for C-Rod, A-Rod, M27 and BR chucks.SW 27
1. Lock the diamond core drilling machine by fully tightening the carriage lock.
2. Open the chuck (BI+) by turning it in the direction indicated by the "open brackets" symbol.
3. From below, push the connection end of the diamond core bit into the splines of the chuck on the
diamond core drilling machine.
4. Close the chuck by turning it in the direction indicated by the "closed brackets" symbol.
5. Check that the diamond core bit is seated securely in the chuck.
5.8 Selecting the speed
CAUTION
Risk of wear and tear Risk of damage to the gearing
▶ Do not attempt to change gear while the machine is running. Wait until the arbor comes to a complete
stop.
1. Set the selector switch to suit the diameter of the core bit used.
2. Turn the switch to the recommended setting while turning the core bit by hand at the same time.
5.9

Removing the diamond core bit (BI+ chuck)

DANGER
Risk of injury Fragments of the workpiece or of broken insert tools may be ejected and cause injury beyond
the immediate area of operation.
▶ Do not use damaged insert tools. Check the insert tools for chipping, cracks, or heavy wear each time
before use.
CAUTION
Risk of injury! Inadvertent starting of the product.
▶ Unplug the supply cord before making adjustments to the power tool or before changing accessories.
C-Rod, A-Rod, M27 SW 27or BR chucks require the use of a 27 mm open-ended wrench to lock the
arbor and a suitable open-ended wrench for removing the core bit.
1. Lock the diamond core drilling machine by fully tightening the carriage lock.
2. Open the chuck (BI+) by turning it in the direction of the open brackets symbol.
3. Pull the sleeve toward the machine, as indicated by the arrow, to unlock the core bit.
4. Remove the core bit from the chuck (BI+).
*2215140*
Printed: 09.08.2019 | Doc-Nr: PUB / 5431632 / 000 / 02
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2215140 English 11