19
Safety
Safety precautions on the jobsite
Before beginning work with the drilling system,
read the operating instructions carefully and
ensure that the safety precautions listed below
are observed.
Please also note that permission to begin drilling
work must be obtained from the site engineer or
other authorised person.
■
Ensure that no electric cables, gas or water
pipes etc. are situated where holes are to be
drilled.
■
Cables, pipes or other supply lines situated in
close proximity to where holes are to be drilled
must be switched off.
■
The drilling work must not have a negative
effect on the structural design of the building
(drilling through steel reinforcement!).
■
Cordon off areas where drilling work is taking
place, particularly behind/below walls or ceil-
ings which are being drilled through.
■
Wear a helmet, safety shoes, gloves and ear
protectors.
■
Tidiness and good organisation on the jobsite
helps to prevent accidents.
■
Use only original Hilti parts.
■
Protect the motor unit from water spray and
rain.
■
For overhead drilling, the water collector and
water removal system must be in good order
and function correctly.
■
The drilling system must only be operated with
the built-in PRCD fault interruptor (GB-with
isolating transformer).
■
In order to ensure safe, trouble-free operation,
the drilling system must be kept clean. (Do not
clean using a jet of water.)
■
Drilling work should only be carried out by
trained personnel who have received instruc-
tion on the use of the equipment.
■
When working with the vacuum baseplate on
walls an additional means of securing the rig
must be employed.
■
If leakage occurs in the water supply system,
the equipment must be serviced.
■
Do not touch rotating parts.
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2
1
3
8
9
7
4
5
■
Before using the tool, ensure that the chuck
is clean and the core bit to be used is not
damaged (e.g.the core bit must not wob-
ble or run out of true when the chuck lever
is closed). Worn or broken parts on the
electric tool or core bit must be replaced
immediately.
Electrical safety
The PRCD fault interruptor protects the operator
in case of faults in the insulation of the motor unit
or supply cord (between the PRCD and the motor
unit).This device also prevents the machine from
restarting of its own accord when power returns
after an interruption in the power supply. The
earth/ground connection protects the operator
from dangerously high voltages in case of drilling
into live cables. The protective function of the
ground fault interruptor must be checked at reg-
ular intervals in accordance with regulations is-
sued by national authorities.
Instructions and precautions for overhead
drilling
When drilling overhead, the following equipment
must be used for safety reasons:
1. Drill stand, fastened to the ceiling using an M12
HKD-D anchor
2. Water collector complete with appropriate seal-
ing disc
3. Hose strain relief clamp
4. Water removal hose
5. Adaptor for wet vacuum cleaner
6. PRCD ground fault interruptor
(integral part of supply cord).
7. Supply cord with earth/ground conductor
8. Wet vacuum cleaner.
A vacuum cleaner designed for removing water
and wet materials must always be used for
overhead drilling.
9. 3-way water connection.
Close the water supply valve and drain the water
from the core bit at the 3-way water connection
before withdrawing the core bit from the water
collector.
Note:
The life of the sealing discs can be extend-
ed by appplying a little grease e.g. bearing grease
or Hilti lubricant spray.
Assembling the components
Changing the chuck
1
3
4
2
OPE
N
CLOS
E
1. Drive shaft
2. Chuck
3. 21 mm AF open-end wrench
4. 30 mm AF open-end wrench
OPE
N
CLOS
E
1
3
5
2
4
Fitting a core bit
1. Chuck
2. Connection end
3. Core bit
4. Locking sleeve
5. Motor unit
Printed: 07.07.2013 | Doc-Nr: PUB / 5069503 / 000 / 00
