FUNCTIONS
1. Speed change
The drilling machine has a mechanical speed change
incorporated (Fig.1 and 2).
Mechanical speed change-over
D
is obtained by rotat-
ing the lever. The lever should not be forced when
changing speeds. If there is any difficulty, gently rotate
the drill spindle until the teeth engage. Mechanical
speed change should only be carried out with the
machine stopped.
2. Electronic speed selection
The machines feature dual electronic adjustment for
torque and speed control with speed stabilisation. The
device is specially recommended for drills with large bit
capacity under heavy-duty conditions.
This dual electronic adjustment feature makes it possible
to adapt the torque and rpm settings to optimal levels as
required by the material.
On cast iron and high strength steels, low speed is
advisable.
On plastics, timber, aluminium, copper, soft bronze and
brass, high speeds are advisable.
3. Electronic torque adjustment
These machines are also equipped with an electronic
safety clutch which can be adjusted with an external
rotary knob to control the maximum current, and thus
indirectly control the torque setting. The user can also
preset the maximum torque, depending on bit size, to
prevent any twisting of arms if the tool becomes seized
in the working material.
WARNING! “TORQUE CONTROL”
This machine has
an adjustable motor torque. When it is adjusted to the
maximum value in manual jobs, it could cause muscular
injuries to the user. It is therefore recommended that
position 3 on the regulation wheel is not exceeded.
The machine is supplied to the user adjusted to posi-
tion 3. This can be changed, for example, for support-
ed work, by slightly loosening screw 1 and freeing
arrow 2 (Fig. 6).
4. Electronic speed control
The machines are equipped with full wave control, which
is adjustable by means of an external rotary knob to
allow continuous control (step-free) of the rpm and
ensure smooth operations.
A speed-measuring dynamo provides feedback to en-
sure that, for each preset control value, the speed re-
mains constant for any load condition ranging from zero-
load to full power.
The device also features gradual start-up from slow to
full speed, thus avoiding a current peak which exceeds
the 16A rating of the quick-blow fuses or the automatic
short-circuit relays.
NOISE AND VIBRATION
This tool has been designed and made to reduce noise
to a minimum. However, in spite of this,
in certain
circumstances the maximum noise level in the place
of work could exceed 85 dBA. In this case, the oper-
ator should wear ear protection.
The machine’s noise and vibration levels, measured in
compliance with EN 60745-1, usually reach:
DMF23/1150VSEDMF32/1600VSE
Acoustic pressure
(dB(A)) 90
86
Sound-power level
(dB(A)) 103
99
Use ear protection!
Vibration acceleration
(m/s
2
) 4.5
4.1
ACCESSORIES
Accessories and their corresponding order number can
be found in our catalogues.
MAINTENANCE AND CARE
WARNING
-Always unplug the machine before carrying
out work on it.
-
When you notice a decrease in hammer output, take
the machine to an Official Service Centre.
-
Tool inspection:
Using a blunt cutting tool leads to
less efficient work and could damage the motor,
therefore cutting tools should be sharpened or re-
placed as soon as any wear is noticed.
Daily:
Clean
the tool holder.
-
Inspect the mounting screws:
Regularly inspect all
the mounting screws and ensure they are firmly tight-
ened. Should any screw be loose, tighten it immediate-
ly. Failure to do so could put you at serious risk.
-
Motor maintenance:
Take the utmost care to ensure
that the motor winding is not damaged and does not
become damp with oil or water.
-
Brush replacement:
The brushes disconnect auto-
matically and should be replaced after 150 - 200 hours
use or when they are less than 10 mm long. Have
them replaced by an Official Service Centre.
-
Clean the machine thoroughly after each use with a
blast of dry air.
-
The vents of the machine should be kept clear at all
times.
-
Check that the mains lead is in good condition. If
it is not, take it to an Official Service Centre to
have it replaced.
-
Use only
Felisatti
accessories and spares. The parts
the changing of which is not covered in this instruction
manual, should be replaced in a
Felisatti
Official Ser-
vice Centre.
Do not dispose of electric tools in
the household waste!
In accordance with European Directive 2002/96/EC
relating to old electrical and electronic appliances and
its translation into national law, used electric tools must
be collected separately and recycled in an ecologically
desirable way.
