9
Original instructions
EN
ing forward to the chuck) using the key as lever,
unwind chuck 1 from the spindle.
AUxILIARY HANDLE
Tighten the auxiliary handle 7 on journal 3 of the
drill. In the interests of safety, the auxiliary han-
dle 7 should always be used. The depth gauge 6
can be used for fixing the depth of drilled bores.
RECOMMENDATIONS fOR OPERA-
TION
Apply moderate pressure during drilling in con-
crete (approximately 100-120 N for drill bits up
to Ø20 mm and 180-200 N for larger bits). High-
er pressure will not increase drilling efficiency,
but it will lead to decreasing the operation life
of the machine. For machines with electronic
speed control, drill with speed lower than the
maximum, suited to the material.
Use carbide tipped straight shank drill bits.
Take the drill out of the opening from time to time
to remove dust.
Watch out the stage of blunting of the bit and
change it if considerable decrease of efficiency
is observed.
When drilling in masonry with drill bit larger than
24 mm, it is recommended to drill half of the di-
ameter first and then the other half.
The optimum capacity when drilling in concrete
is up to 20 mm, and the possible capacity is up
to 35 mm.
ACCESSORIES TO BE USED WITH
THIS POWER TOOL
▪ Drill bits for steel Ø3 mm to Ø16 mm
▪ Drill bits for wood Ø3 to Ø45 mm
▪ Drill bits for concrete Ø3 to Ø35 mm
Maintenance
WARNING:
Always ensure that
the tool is switched off and unplugged
before attempting to perform inspection or
maintenance.
BRUSH REPLACEMENT
This power tool is equipped with auto-stop
brushes. When the carbon brushes are worn
out, the machine switches itself off. In this case
both brushes must be replaced simultaneously
with genuine brushes at SPARKY service centre
for warranty and post-warranty service.
GENERAL INSPECTION
Regularly inspect all fasteners and ensure they
are properly tightened. Should any of the screws
be loose, retighten it immediately to avoid haz-
ards.
If the replacement of the supply cord is neces-
sary, this has to be done by the manufacturer or
his agent in order to avoid a safety hazard.
CLEANING
For safe operation always keep the machine
and its ventilation slots clean.
Regularly check to see if any dust or foreign
matter has entered the ventilation slots and the
grills around the switches. Use a soft brush and/
or air jet to remove any accumulated dust. Wear
safety glasses to protect your eyes whilst clean-
ing.
Exterior plastic parts may be cleaned with a
damp cloth and mild detergent if necessary.
WARNING:
Never use alcohol, petrol
or other cleaning agent. Never use caustic
agents to clean plastic parts.
WARNING:
Water must never come
into contact with the tool.
IMPORTANT!
To assure product safety and re-
liability, repairs, maintenance and adjustment
(including brush inspection and replacement)
should be performed by certified service centres
or other qualified service organisations, always
using genuine replacement parts.
Содержание Bu2 350
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