Operation - Hilti DD 150-U Manual De Instrucciones

NOTE
Diamond core bits must be replaced when the cutting
performance and/or rate of drilling progress drops sig-
nificantly. This generally is the case when the segments
reach a height of less than 2 mm.
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DANGER
To avoid injury, use only genuine Hilti core bits and
DD 150-U accessories. If using a machine with a BI+
chuck, only genuine Hilti core bits may be used with
it.
CAUTION
The core bit may become hot during use or during sharp-
ening. There is a risk of burning your hands. Wear pro-
tective gloves when changing the core bit.
CAUTION
Disconnect the supply cord plug from the power out-
let.
NOTE
If using an alternative type of chuck, lock the drive spindle
with a suitable open-end wrench and use another suitable
open-end wrench to tighten the core bit.
1. Engage the carriage locking system with the channel
and check that the channel is securely fastened.
2. Open the chuck (BI+) by turning it in the direction of
the open brackets symbol.
3. Push the diamond core bit into the chuck (BI+) from
below, turning the core bit until the teeth in the
chuck engage with the core bit.
4. Close the chuck (BI+) by turning it in the direction of
the closed brackets symbol.
5. Check that the diamond core bit is securely mounted
in the chuck by pulling on the core bit and attempting
to move it from side to side.

7 Operation

WARNING
Take care to ensure that the supply cord and water or
vacuum cleaner hoses do not come into contact with
rotating parts.
WARNING
Make sure that the supply cord is not pinched and
damaged as the carriage advances.
12
6.1.14 Selecting the speed 22
CAUTION
Do not change gear while the machine is running.
Wait for the spindle to come to a halt.
1. Set the switch to the correct position according to
the core bit diameter used (see Section 2.3). When
turning the switch, rotate the core bit by hand at the
same time until the switch can be engaged in the
recommended position.
6.1.15 Removing the diamond core bit
CAUTION
The core bit may become hot during use or during sharp-
ening. There is a risk of burning your hands. Wear pro-
tective gloves when changing the core bit.
CAUTION
Disconnect the supply cord plug from the power out-
let.
NOTE
If using an alternative type of chuck, lock the drive spindle
with a suitable open-end wrench and use another suitable
open-end wrench to release the core bit.
1. Engage the carriage locking system with the channel
and check that the channel is securely fastened.
2. Open the chuck (BI+) by turning it in the direction of
the open brackets symbol.
3. Pull the sleeve on the chuck in the direction of the
arrow towards the machine. This releases the core
bit.
4. Remove the core bit.
CAUTION
The machine and the drilling operation generate noise.
Wear ear protectors. Excessive noise may damage the
hearing.
CAUTION
Drilling may cause hazardous flying fragments. Flying
fragments present a risk of injury to the eyes and body.
Wear eye protection and a hard hat.
CAUTION
Do not change gear while the machine is running.
Wait until the drive spindle has stopped rotating.
WARNING
When using a two-part hole-starting aid, do not allow
the machine to run without contact with the work
surface.