Metabo BH 20 Original Instructions Manual page 12

ENGLISH
ENG
Always wear protective goggles, gloves, and
sturdy shoes when working with this tool.
Ensure that the spot where you wish to work is
free of power cables, gas lines or water pipes
(e.g. using a metal detector).
Metabo S-automatic safety clutch.
When the safety clutch responds, switch off the
machine immediately!
Avoid inadvertent starts by always unlocking the
switch when the plug is removed from the mains
socket or in case of a power cut. Not required for
drills with VTC electronics (restart protection).
Do not touch the rotating tool!
Remove chips and similar material only with the
machine at standstill.
Caution must be exercised when driving screws
into hard materials (driving screws with metric or
imperial threads into steel)! The screw head may
break or a high reverse torque may build up on the
handle.
Pull the plug out of the plug socket before any
adjustments or servicing are performed.
SYMBOLS ON THE TOOL:
.......Class II Construction
V...........volts
A...........amperes
Hz.........hertz
.../min ...revolutions per minute
~...........alternating current
n .........no load speed
0
Dust from material such as paint containing lead,
some wood species, minerals and metal may be
harmful. Contact with or inhalation of the dust may
cause allergic reactions and/or respiratory
diseases to the operator or bystanders.
Certain kinds of dust are classified as carcinogenic
such as oak and beech dust especially in conjunc-
tion with additives for wood conditioning (chro-
mate, wood preservative). Material containing
asbestos must only be treated by specialists.
- Where the use of a dust extraction device is
possible it shall be used.
- The work place must be well ventilated.
- The use of a dust mask of filter class P2 is
recommended.
Follow national requirements for the materials you
want to work with.
5 Overview
See page 3 (please unfold).
1 Keyless chuck
2 SDS chuck
3 Tool lock
4 Keyless chuck sleeve
5 Chuck lock
6 Spindle
12
7 Depth stop
8 Speed preselection wheel
9 Electronic signal indicator
10 Contact mode indicator
11 Contact mode
12 Rotation selector switch
13 Lock button
14 Trigger
15 Stop
16 Control knob
17 Side handle
18 SDS chuck
6 Special Product Features
Exchangeable chuck
(not BH 20, BHE 20):
With a simple operation and without the need for
extra tools the SDS chuck is exchanged against
the keyless chuck.
Single-knob control
(not BH 20):
With only a single control knob the operating mode
(drilling, hammer drilling, chiselling, depending on
the model) is selected.
Rotary stop:
(KHE 24, KHE 28, KHE 24 Contact):
By turning the rotation off chiselling can be done.
Metabo S-automatic safety clutch:
If the insertion tool jams or hooks, the power flow
to the engine will be restricted. Because of the high
power which then arises, always hold the machine
with both hands on the handles, stand safely, and
concentrate on your work.
Auto-stop carbon brushes
If the brushes are completely worn, the machine
switches off automatically.
With VTC electronics: A LED warns before the
brushes are completely worn.
Restart protection on machines with
VTC electronics
(BHE 24, KHE 24, KHE 28)
The restart protection prevents unintentional
starting when being plugged in again or when
power is restored after a power failure.
Metabo contact mode:
(KHE 24 Contact)
For intelligent drilling in walls with installed electric
or water lines. As soon as the inserted tool makes
contact with conductive, earthed material or live
supply cables, the machine switches off
immediately.
7 Start of Operation
Before plugging in check to see that the
rated mains voltage and mains frequency,
as stated on the rating label, match with your
power supply.