KRESS 420 BME Instrucciones De Servicio página 5

1 ON-/OFF-switch with electronics
2 Holding button for continuous operation
3 Quick-change chuck
Technical data
Input
Output
No-load speed r.p.m.
Adjustment range r.p.m.
Max. drilling capacity into steel
Max. drilling capacity into wood
Euro collet
Measurement accross the corner
Chuck dia., Ø mm
Spindle thread
Weight kg
Use
The all-purpose power drill is for drilling and screwing in
wood, metal and plastic.
Safety instructions and prevention of accidents
Before operating the machine, please read through the
operating instructions completely, follow the Safety In-
structions in this manual as well as the general Safety
Instructions for Power Tools in the accompanying
booklet.
Caution!
Pay attention to the jamming moment of the
machine, e. g. if the drill jams or if the drill hits
concrete reinforcing steel and jams!
Befor fitting tools in the chuck or drill Spindle dis-
connect the machine from power supply.
Do not work with materials which contain as-
bestos!
Outside power sockets must be protected with re-
sidual-current-operated circuit-breakers (r.c.c.b.).
Do not drill holes into the housing to label the
machine. The protective insulation will be bridged.
Please use self-adhesive labels.
Always lead cables away towards the back of the
machine.
Double Insulation
Our equipment is designed in accordance with European re-
gulations (EN standards) for the utmost safety of the user.
Machines with double insulation always carry the internatio-
nal symbol. The machines do not require earthing. A two-
core cable is sufficient.
The machines are interference-suppressed in accordance
with EN 55014.
Initial operation
Before the first operation check that the mains voltage cor-
responds to that given on the machine nameplate.
Trigger switch with button for continuous operation
The machine is set in operation by pressing in the handle
switch (1). The holding button (2) on the side of the switch
can be pressed for continuous operation. To release the
continuous operation merely depress the switch, which
makes the holding button spring back automatically.
Electronic speed control
This machine is equipped with a half cycle electronic con-
trol circuit. The speed can be controlled infinitely variably
in the range 0–2200 r.p.m. and adapted for processing va-
rious materials and applications.
Ensure that the drill is not allowed to jam for longer
than 2–3 seconds. Longer jamming can lead to motor
damage.
English
420 BME
420 W
230 W
0–3000
0–2200
10
16
43
22.5
1–10
3/8"–24 UNF
1.3
Important!
Continuous operation under strong load and low speed
can overheat the motor.
Allow the motor to cool down in no-load when set at a
high speed!
Quick change chuck
In the usual manner by twisting the locking sleeve as far as
it will go.
Always make sure that the chosen speed is correct for
the purpose for which you are using the machine.
High speeds are necessary for polishing and grinding.
When drilling match speed with type of material and drill.
High speed drilling in steel and stone will cause premature
tool wear.
Use tool steel twist drills for soft materials such as wood
and plastics; carbide-tipped stone drills for stone and con-
crete; high speed twist drills for steel and iron.
Also make sure that, using a gear-rim chuck, the drill
chuck key is never fastened to the drill with chains,
strings or by similar means. Be sure that the workpiece
cannot be taken along by the drill.
Maintenance
The machine's motor has life-time lubrication and requires
no special maintenance. However, should you operate the
machine on a continuous basis over long periods of time
we recommend that you send us the machine for thorough
cleaning and an inspection. This will spare you unnecess-
ary repair expenses and increase the machine's service
life. If you always clean the ventilator of dust after each
operation, the motor will enjoy an ever longer service life.
Uniform ventilation is essential for a long service life.
Replacing carbon brushes
Our service personnel will do this and all other servicing
work fast and professionally.
Mains cable
Damaged mains cables must not be used. They are to be
replaced immediately by an authorized service location.
Noise/vibration information
Measured values correspond with EN 50144
Sound pressure level:
Sound power level:
Work place emission value:
Operators require noise protection equipment.
The weighted acceleration is typically smaller than
2.5 m/s 2 .
Environmental Protection
Kress takes back worn-out machines for the purpose of re-
source-saving recycling. As a result of their modular con-
struction, Kress machines can be very easily dismantled
into their reusable materials.
Give your worn-out Kress machine to your dealer or send it
directly to Kress.
Subject to change without notice.
76 +
3
dB (A)
83 +
3
dB (A)
73 +
3
dB (A)