4. Preparations
Use a detector to localize pipes and/or cables in
walls with concealed electric, water or gas lines.
Before you plug in the machine, check that your
mains voltage is the same as that marked on the
rating plate.
4.1 Intended use
This hammer drill is designed for hammer drilling in
concrete, stone and masonry, for chiseling and for
drilling without hammer action in wood and metal. It
is to be used only with suitable bits.
4.2 Fitting and changing a bit (Fig. 2)
Clean the bit and coat it with a little machine
grease before you insert it.
Pull back the locking sleeve (A) and hold in this
position.
Insert the dust-free bit with a twist as far as it
goes into the chuck. The bit will automatically be l
ocked in place.
Pull on the bit to check that it is secure.
4.3 Removing a bit (Fig. 3)
Pull back the locking sleeve (A), hold and pull out the
bit.
5. Starting up (Fig. 1 - Pos. 3)
5.1 Switching on/off
Switching on: Press On/Off switch (3).
Switching off: Release On/Off switch (3).
5.2 Additional handle (Fig. 1 - Pos. 4)
For safety reasons you should always use the
hammer drill with the additional handle.
For a secure posture during work you should turn the
additional handle. Twist the additional handle
anticlockwise and turn.
Then fix the additional handle by twisting again.
5.3 Drilling depth stop (Fig. 1 - Pos. 5)
Loosen the thumb screw on the additional handle
and insert the straight part of the drilling depth stop in
the hole in the additional handle. Set the depth stop
and re-tighten the thumb screw.
5.4 Dust collector (Fig. 4)
Before you start any hammer drilling work directly
over your head, slide the dust collector on the bit.
5.5 Hammer stop (Fig. 5)
The hammer drill comes with a hammer stop for
smooth pre-drilling.
Turn the lever switch (6) to the right to position
(b) to switch off the hammer mechanism.
To turn the hammer mechanism back on you
have to turn the lever switch (6) back to position
(a).
5.6 Rotation stop (Fig. 6)
For chiseling, the rotary function of the hammer drill
can be switched off.
To do this, turn the lever selector (7) with the
arrow (a) to position (c) on the machine
housing.
To turn the rotary function back on you have to
turn the lever selector (7) with the arrow (a) to
position (b).
Important:
You only need to apply minimal pressure for hammer
drilling. Do not apply too much pressure as this will
put unnecessary strain on the motor. Check the
hammer drill at regular intervals.
Re-sharpen or replace bits whenever blunt.
6. Maintenance
Always unplug the machine before starting any
maintenance work!
Keep your machine clean at all times.
Do not use aggressive agents to clean plastic
parts.
To prevent dust from collecting in the air vents,
clean them with compressed air (max. 3 bar)
each time you finish working with the machine.
Check the carbon brushes at regular intervals
(dirty or worn carbon brushes cause excessive
sparking and interference in speed).
7. Ordering replacement parts
Please quote the following data when ordering repla-
cement parts:
Type of machine
Article number of the machine
Identification number of the machine
Replacement part number of the part required
8
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Anleitung BHG 826-1 SPK 1 21.02.2005 13:58 Uhr Seite 8
