6
SAFETY PRECAUTIONS
Wear work gloves to protect fingers from bruising and
grazing.
Vibrations can injure the hand-arm system. Keep
exposure to vibrations as short as possible.
Always keep the power cord behind the tool.
Store the tool out of the reach of children.
When using the tool, always hold it with both hands
and ensure that you have stable footing.
Chisels may only be used with ERH750V
N
with Roto-
stop engaged.
BEFORE STARTING TO USE YOUR ROTARY
HAMMER DRILL
Examine the place where the tool is to be used for
hidden electrical cables, gas and water pipes using a
pipe finding device.
Before you plug in your tool, make sure that the
supply voltage used corresponds to that indicated on
the rating plate.
FITTING AND CHANGING BITS (FIG. 2)
The device is equipped with an SDS-plus attachment
system.
Clean the bit and grease it with a thin layer of
machine grease before inserting it into the chuck.
Pull back the locking collar (A. Fig. 2) and hold it.
Push and rotate the dust-free bit into the bit holder
as far as it will go.
Release the locking collar to lock the bit.
Check that it has locked by pulling on it.
REMOVING THE BIT FROM THE SDS-PLUS
SYSTEM (FIG.3)
Pull back the Locking collar (A) and remove the bit.
SWITCHING ON/OFF
maximum speed of the drill, rotate the dial (3) on
the front of the trigger until the desired setting
is achieved.
Lock-on button
If you want to keep your rotary hammer drill operating
at a constant speed, press the lock-on button (5)
while pressing the variable switch. To unlock this
function, briefly press the trigger switch (2) then
release it.
AUXILIARY HANDLE (FIG. 4)
For reasons of safety, only use the rotary hammer drill
when it is fitted with the auxiliary handle.
To loosen the auxiliary handle, rotate the handle
anticlockwise until the handle assy is free to move.
Position the handle as required then lock securely by
rotating the handle clockwise until it is tight.
DEPTH
GAUGE
(FIG. 5)
Fit the depth stop. Loosen wing bolt D to adjust the depth
stop. The depth of the hole drilled will be equal to the
distance between the end of the drill bit and the front end
of the depth stop.
MODE SELECTOR (FIG. 6)
Your rotary hammer drill is equipped with a hammer stop
facility for smooth drilling into timber and plastics.
To deactivate the hammer action, turn the mode
selector (8) clockwise to “ ”
To reactivate the hammer action, the mode selector
(8) has to be reset to “ ”
You can use the selector to change modes even when
the hammer drill is operating (at low speed). The selected
mode is only activated once the trigger switch (2) is
pressed to start the tool.
Note: Anti-clockwise rotation during impact drilling
damages the drill bit. Deactivate the hammer
action when using a diamond drill bit.
ROTATION STOP
The mode selector features a third position, Rotation Stop
Mode “ ”,which stops the rotation of the tool whilst
maintaining the hammer action.This feature enables the
tool to be used for chiselling, when fitted with the
appropriate bit.
increase as more pressure is applied. To limit the
Sp
b
x
b
(2)
