Care And Maintenance - Hilti DD 110-D Manual De Instrucciones

CAUTION
Unplug the supply cord from the power outlet before
removing the core.
DANGER
Wear respiratory protection.
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NOTE
Dust is released in all directions. Drilling, especially over-
head drilling, without a dust removal system is very
unpleasant and optimum performance is not achieved.
Overhead drilling without use of dust removal system is
therefore not recommended. For dry coring it is recom-
mended that the dust removal attachment and a suitable
vacuum cleaner are always used.
1. Secure the side handle in the desired position.
2. Fit the hole-starting aid (optional operation).
3. Plug the supply cord into the power outlet.
4. Position the machine at the point where the hole is
to be drilled (hole center).
5. Press the on / off switch on the power tool.
6. When beginning drilling, apply only light pressure
until the core bit has centered itself and then in-
crease the pressure. Drill to a depth of 3-5 mm to
form a guide kerf (optional operation).
7. Switch the machine off by releasing the on / off
switch and then wait until the core bit has stopped
rotating (optional operation).
8. Remove the hole-starting aid from the core bit (op-
tional operation).
9. Position the core bit in the guide kerf and then
press the on / off switch to continue drilling (optional
operation).
7.4 Switching off and dismantling the system
CAUTION
Wear protective gloves when changing cutting tools
as they get hot during use.

8 Care and maintenance

CAUTION
Disconnect the supply cord plug from the power out-
let.
8.1 Care of cutting tools and metal parts
Remove any dirt adhering to the surface of cutting tools,
the chuck and drive spindle and protect their surfaces
from corrosion by rubbing them with an oily cloth from
time to time.
Always keep the connection end clean and lightly
greased.
10
CAUTION
The core bit will be full of dust and drilled-out material.
Work from a secure stance and make sure you are
ready to support the additional weight of the drilled-
out material.
NOTE
The power tool should preferably be transported in the
Hilti toolbox.
1. Release the on / off switch on the power tool and
slowly pull the core bit out of the hole.
2. Switch off the vacuum cleaner if you are using one.
3. Check that the machine is disconnected from the
electric supply.
4. Remove the core if necessary.
5. Remove the core bit.
7.5 Procedure in the event of the core bit sticking
In the event of the core bit sticking, the clutch will slip
until the user switches the power tool off. The core bit
can be released by taking the following action:
7.5.1 Using an open-end wrench to release the
core bit
1. Disconnect the supply cord plug from the power
outlet.
2. Grip the core bit with a suitable open-end wrench
close to the connection end and release the core bit
by rotating it.
3. Plug the machine's supply cord into the power out-
let.
4. Resume the drilling operation.
7.6 Transport
CAUTION
Check that the machine is disconnected from the
electric supply.
NOTE
Store and transport the power tool in its toolbox when
possible.
8.2 Care of the machine
CAUTION
Keep the machine, especially its grip surfaces, clean
and free from oil and grease. Do not use cleaning
agents which contain silicone.
Never operate the machine when the ventilation slots are
blocked. Clean the ventilation slots carefully using a dry
brush. Do not permit foreign objects to enter the interior of
the machine. Clean the outside of the machine at regular
intervals with a slightly damp cloth. Do not use a spray,