Preparation for use
It is essential that the safety precautions print-
ed in these operating instructions are read and observed.
The supply voltage must correspond to the infor-
mation on the type plate.
If extension cords are used: Only extension cords
of a type approved for the intended use and of adequate
cross section may be used. Failure to observe this point
may result in reduced performance of the tool and over-
heating of the cord. Damaged extension cords must be
replaced. The recommended cross-sections and max.
length for extension cords are:
Conductor cross-section
mm
2
AWG
Voltage
1.5
2.0
2.5
3.5
14
12
110–120 V 20 m 30 m 40 m 50 m 75 ft 125 ft
Do not use 1.25 mm
2
and 16 AWG extension cords.
Use only insert tools with TE-Y connection end.
Don’t exert excessive pressure on the tool. This will not
increase its hammering power.
At low temperatures: The tool requires to reach a mini-
mum operating temperature before the hammering
mechanism begins to operate. Switch on the tool and
position the tip of the drill bit or chisel on the work sur-
face. While the tool is running, apply light pressure briefly
and repeatedly until the hammering mechanism begins
to operate.
Operation
Operating from generators and transformers
This tool can be used on a generator and jobsite trans-
formers if it meets the following requirements:
– AC output 2600 W minimum; 24 A minimum
– 120 V AC nominal; min. 102 V, max. 132 V under all
conditions
– frequency 50–60 Hz; never to exceed 65 Hz
– high dynamic automatic voltage regulator
Do not use other power tools on the generator/
transformer at the same time. Switching other tools
on/off can cause undervoltage and/or overvoltage spikes
which could damage the tool.
Inserting the insert tool
a)
Unplug the supply cord from the electrical sock-
et to prevent unintentional starting.
b) Check that the connection end of the insert tool is
clean and lightly greased. Clean it and grease it if nec-
essary
. Check that the sealing lip of the dust shield
5
is clean. Wipe it off if necessary. Take care to ensure
that no drilling dust finds its way into the interior of
the chuck. The dust shield must be replaced when
the sealing lip is damaged. Please refer to the section
on “care and maintenance“.
c) Insert the insert tool in the chuck and rotate it while
applying slight pressure until it engages in the guide
grooves.
d) Push the insert tool in further until it is heard to engage.
Check that the insert tool has engaged correctly by
pulling on it.
Removing the insert tool
a)
Unplug the supply cord from the electrical sock-
et to prevent unintentional starting.
b) Pull back the chuck locking sleeve and pull out the
insert tool
.
Wear protective gloves. The insert tool
may be very hot after long periods of use.
Drilling
Hammer drilling
a) Insert drill bit into the chuck.
b) Move the selector switch to the hammer drilling
position (
) until it engages
.
c) Select the desired drilling power (II = full power,
I = half power)
. When drilling in brittle materials
(e.g. perforated brick), drilling at the half-power set-
ting can be of advantage. This may improve the qual-
ity of the hole drilled.
d) Rotate side handle to the desired position. Ensure
that it is fitted correctly and tightened securely
.
e) Connect the supply cord to the power supply.
f) Bring the tip of the drill bit into contact with the work
surface at the position where the hole is to be drilled
and press the control switch slowly. Drill at low speed
until the drill bit centers itself in the hole.
g) Press the control switch fully and continue drilling at
full power. When drilling a through hole, reduce drilling
speed shortly before the drill bit breaks through. This
will reduce spalling around the hole.
Active Torque Control
The TE76-ATC is equipped with the Active Torque Con-
trol system in addition to the mechanical torque limit-
ing clutch. This system aids in maintaining control of
the tool in the drilling mode. If the drill bit catches, e.g.
on rebar, ATC is designed to help stop the tool, reduc-
ing the risk of an unwanted spin.
When the ATC system has activated, the tool can be
restarted by releasing the control switch and re-engag-
ing it after the the motor has stopped rotating (“click“-
sound signals readiness for use).
