Hilti DD 150?U Operating Instructions Manual page 20

7.1.1 Unlocking the machine
1. Connect the supply cord to the electric supply and
press the "I" or "Reset" button on the ground fault
circuit interrupter. The yellow theft protection indica-
tor LED blinks. The machine is now ready to receive
the signal from the TPS key.
2. Hold the TPS key or the TPS watch strap buckle
against the lock symbol. The machine is unlocked
as soon as the yellow theft protection indicator LED
no longer lights.
NOTE If, for example, the electric supply is briefly
interrupted due to a power failure or disconnected
when moving to a different workplace, the machine
remains ready for operation for approx. 20 minutes.
In the event of a longer interruption, the TPS key
must be used again to unlock the machine.
7.1.2 Activation of the theft protection system for
the machine
NOTE
Further detailed information on activation and use of the
theft protection system can be found in the operating
instructions for the theft protection system.
7.2 Switching on and checking the ground fault
circuit interrupter (GFCI)
An isolating transformer must be used with machines not
equipped with a GFCI.
1. Plug the machine's
earthed/grounded power outlet.
2. Press the "I" or "Reset" button on the ground fault
circuit interrupter (GFCI).
The drilling performance indicator lights orange.
3. Press the "0" or "Test" button on the ground fault
circuit interrupter (GFCI).
The indicator must go out.
4. WARNING If the indicator continues to light, fur-
ther operation of the machine is not permissi-
ble.Have the machine repaired by trained personnel
using genuine Hilti spare parts.
Press the "I" or "Reset" button on the ground fault
circuit interrupter (GFCI).
The indicator must light.
7.3 Hand-guided dry drilling
NOTE
If a considerable quantity of dust collects in the core bit
this can cause the core bit to run out of balance. Remove
the dust from the core bit.
7.3.1 Dry drilling with dust removal
CAUTION
When working, always lead the vacuum cleaner hose
away to the rear of the machine so that it cannot
come into contact with the core bit.
CAUTION
Please read the operating instructions for the vacuum
cleaner for information about disposal of the material
collected.
supply cord into an
NOTE
To avoid electrostatic effects, use an anti-static vacuum
cleaner.
7.3.1.1 Fitting the hole-starting aid
A different hole-starting aid is required for each core bit
diameter.
Fit the hole-starting aid into the open end of the diamond
core bit.
7.3.1.2 Vacuum cleaner with power outlet for
power tools 23
CAUTION
Do not use slotted core bits when working with a dust
removal system.
NOTE
The optional operations are to be carried out when the
two-part hole starting aid is used.
1. Bring the side handle into the desired position and
secure it (see Section 6.1.1).
2. Fit the hole-starting aid (optional operation).
3. Plug the machine's supply cord into the power outlet
on the vacuum cleaner.
4. Plug the vacuum cleaner's supply cord into the
power outlet and press the "Reset" or "I" button on
the GFCI (see Section 7.2).
5. Position the machine at the point where the hole is
to be drilled (hole center).
6. Press the on / off switch on the machine.
NOTE The vacuum cleaner starts with a delay after
the machine is switched on. After switching the
machine off, the vacuum cleaner continues to run
for a short time before switching itself off.
7. When beginning drilling, apply only light pressure
until the core bit has centered itself and then in-
crease the pressure. Drill to a depth of 3-5 mm to
form a guide kerf (optional operation).
8. Switch the machine off by releasing the on / off
switch and then wait until the core bit has stopped
rotating (optional operation).
9. Remove the hole-starting aid from the core bit (op-
tional operation).
10. Position the core bit in the guide kerf and then
press the on / off switch to continue drilling (optional
operation).
7.3.1.3 Vacuum cleaner without power outlet for
power tools
CAUTION
Do not use slotted core bits when working with a dust
removal system.
NOTE
The optional operations are to be carried out when the
two-part hole starting aid is used.
en
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