English
14
Installation of Detachable Handgrip
and Depth Stop
Attention! Risk of injury by electric current. Unplug the
device from the power socket before making any ad‑
justments (such as mounting or removing hand grips,
making adjustments, replacing drill bits, etc.)!
Use the device only with the installed detachable handgrip (8). Fit
the detachable handgrip onto the fastening neck (7) and firmly
tighten the fastening sleeve (8a) using the rotary grip.
To change the position of the detachable handgrip, loosen the
sleeve (8a) using the rotary grip, adjust the placement of the hand-
grip and tighten it again.
To drill a hole of a specific depth or for drilling identical holes in a
series, use the depth stop rod (9).
Press the depth stop adjustment button on the detachable hand-
grip (8b) and insert the hexagonal depth stop rod into the hexag-
onal hole so that one of its two notched sides is facing upwards.
Then, slide out the depth stop to the desired length and secure it
by releasing the adjustment button on the detachable handgrip.
The minimum length by which the depth stop can be adjusted
is 2 mm.
Putting the Device into Operation
Connect only to a single-phase AC power grid with the same volt-
age as is specified on the device’s label. The device can even be
connected to a socket without safety earthing connection, since
the device is a class II appliance.
Check that the type of plug corresponds to the type of socket.
Turning On and Off
The device is turned on by pressing the switch (1), and turned off
once the switch is released.
Speed Regulation
The switch (1) can be used for smooth speed regulation. Pressing
the switch gently will initiate slow drill bit rotation. The rotation
speed increases the harder you press the switch.
Function Switch (3)
The function switch (3) has two positions:
= drilling,
= impact drilling.
Drilling and Impact Drilling
For drilling or screwing:
turn the function switch (3) to the symbol.
For impact drilling:
turn the function switch (3) to the symbol.
Switch functions only when the device is idle. Simply turn the
switch (3) to the desired position.
The gearbox of the drilling hammer will shift into the selected
mode after pressing the switch (1), or once the drilling hammer
is turned on.
Warning: When impact drilling, do not change the direction of
rotation to the left. Doing so may cause damage to the drill bit
if it was not specifically designed for this purpose. It is neces‑
sary to do so only if the drill bit is stuck and must be taken out
of the hole. For impact drilling, use only the recommended
drill bits with the SDS‑Plus shank.
This electro-pneumatic drilling hammer cannot be directly used
with hammer drill bits with a cylindrical shank. Such drill bits are
designed only for quick release chucks or key-type drill chucks.
Switching Rotation Direction
Use the rotation direction switch (2) only when the device is idle.
Right rotation: push the switch button marked with the
symbol all the way to the left.
Left rotation: push the switch button marked with the
sym-
bol all the way to the right.
Inserting and Removing a Tool
Tools are clamped into the fastening head (4) without the use of
a key.
Inserting a Tool
Attention! Risk of injury by electric current. Unplug the
device from the power socket before making any ad‑
justments (such as mounting or removing hand grips,
making adjustments, replacing drill bits, etc.)!
Make sure the tool shank (11) is clean and lubricate it with a lubri-
cant designed for this purpose.
When inserting a tool into the fastening head, there is no need
to push in the securing sleeve. Always slowly rotate the tool until
it clips into the guiding grooves. Then, check whether the tool is
fastened sufficiently and will not fall out of the fastening head by
slightly moving the tools axis.
When fastening the tool, be careful not to damage the rubber cov-
er (6) that protects the fastening head from dust and coarse dirt.
Immediately replace the rubber cover with a new one if it becomes
damaged!
Removing a Tool
Pull the securing sleeve (5) towards you and pull out the tool.
Adapter with Chuck
Drilling or screwing into metal, wood or plastic materials with
cylindrical shank drill bits requires the use of an adapter with a
chuck (13).
When mounting the adapter with a chuck, proceed the same way
as described in the “Inserting a Tool” chapter.
When removing the adapter with a chuck, proceed the same way
as described in the “Removing a Tool” chapter.
CVS Anti-vibration Grip
The electro-pneumatic drilling hammer EKV 21 is equipped with
an ergonomic composite grip (10) that is fitted with an anti-vi-
bration joint at the attachment point to the gearbox. This ensures
vibrations are absorbed and prevents them from having any nega-
tive impact on the operator’s arm.
Tips for Use
Do not drill in places where there could be any hidden wiring or
gas or water pipes. Always inspect the place you intend to drill into
with a metal detector first.
Use only perfectly sharp drill bits when drilling into metal.
When drilling into stone or concrete, only use drill bits with a ce-
mented carbide edge designed for this purpose.
Always adjust the rotation speed according to the material you are
drilling into and the diameter of the drill bit used.
Impact Drilling
Use protective glasses and ear protection.
Do not press too hard onto the drilling hammer. It will not lead to
any significant increase in its effectiveness.
Always work with the detachable handgrip (8) mounted.
Before turning the device on, check that the function switch (3) is
set to the desired mode.
Drilling into Tiling
First, slowly drill into the tile without the hammer action turned on.
Once you have drilled through the tile, switch to the impact drilling
setting and drill away the underlying material.
Screwing
Screwing bits can be fastened into the adapter with a chuck (13) or
directly into another suitable adapter.