7
-CAUTION-
■
Drilling may cause hazardous splinter-
ing of the material.
■
Splintering material may injure parts of
the body and the eyes.
■
Wear eye protection and a safety hel-
met.
6. Operation
It is essential that the safety precautions printed in these
operating instructions are read and observed.
-CAUTION-
■
The tool and the drilling operation emit
noise.
■
Excessive noise may damage the hear-
ing.
■
Wear ear protection.
6.1 Drilling
1. Open the water valve on the water leg. Make sure that
water flows continuously while drilling.
2. Bring the tool with the water leg into the drilling posi-
tion.
3. Switch on at the ON / OFF switch.
4. Regulate the contact pressure at the water leg so that
the drill bit runs centrally in the hole being drilled. The
tool should hammer evenly without kicking back.
5. Move the water leg as necessary, as the drilling oper-
ation continues.
-CAUTION-
When retracting the water leg, take care to ensure that
no parts of the body are pinched between the moving
part and the fixed part of the water leg.This presents a
risk of injury!
6.2 Finishing drilling
1. Pull the drill steel and drill bit out of the hole while the
tool is still running.
2. Switch off at the ON / OFF switch.
3. Close the water valve on the water leg.
Removing the drill bit:
Lay the drill steel down flat on a
hard surface so that the full length of the drill bit is in con-
tact with this surface. Strike the side of the drill bit with
a hammer several times while rotating the drill steel
between each hammer blow. The hammer blows should
cause the drill bit to be released from the drill steel. Take
care to avoid damage to the drill steel.
-CAUTION-
Take care to ensure that no persons in the vicinity are
injured when removing the drill bit.
7. Maintenance
Disconnect the supply cord plug from the mains socket.
7.1 Care of insert tools
Remove any dirt adhering to the surface of the insert
tools and protect them from corrosion by rubbing them
with an oily cloth from time to time.
7.2 Care of the tool
The outer casing of the tool is manufactured from impact-
resistant plastic. The grip section is manufactured from
synthetic rubber.
Check all external parts of the tool for damage at regu-
lar intervals and check that all controls operate fault-
lessly. Damaged plastic parts of the housing must be
replaced immediately due to their explosion protection
function.
Use a slightly damp cloth to clean the outside of the tool
at regular intervals. Always keep the grip sections of the
tool free from oil and grease. Do not use cleaning agents
or polishes, etc., containing silicone. Keep the chuck
clean. Check the drill steel for damage and wear at the
grooves and ensure that the water passage is not obstruct-
ed. Do not operate the tool when parts are damaged or
when the controls do not operate faultlessly. If neces-
sary, have the tool repaired at a Hilti service centre. Elec-
trical sections of the tool may be repaired only by trained
electrical specialists.
7.3 Maintenance of the tool
Regular maintenance is necessary in order to ensure that
the tool remains ready for use when required. After a pre-
set number of operating hours, the operating status lamp
(green lamp) begins to blink. The tool may continue to
be operated for some time in this state. The tool will final-
ly switch itself off after the set service interval is exceed-
ed by more than 20%. The tool must be serviced at an
authorized Hilti service center.
Repairs to the tool and plug / socket system are sub-
ject to restrictions concerning approval and explosion
protection and therefore may be carried out only by
skilled specialists authorized by Hilti.
7.4 Checking the tool after care and maintenance
After care and maintenance work, the specified checks
and inspections must be carried out and documented
accordingly.
8. Accessories
TE-MW / TE-MW T water leg, in various lengths
TE-MCE connection end
TE-MDR drill steel, in various lengths
TE-MDH drill bit head, in various versions
TE-MW E water leg extension, in various lengths
TE-MEC extension cord, in various versions
Please ask your Hilti representative for further informa-
tion about the accessories available.
Printed: 20.04.2017 | Doc-Nr: PUB / 5136192 / 000 / 00
Printed: 20.04.2017 | Doc-Nr: PUB / 5136192 / 000 / 01
