en
5.
Fit the bit in the bit holder.
7.7.2 Screwdriving
1.
Select the torque function on the setting ring for
torque and drilling.
2.
Set the forward / reverse switch to the desired
direction of rotation.
7.7.3 Removing the bit / bit holder
1.
Set the forward / reverse switch to the middle
position or remove the battery from the power
tool.
2.
Remove the bit from the bit holder.
3.
Open the keyless chuck.
4.
Remove the bit adapter.
7.8 Reading the charge status LED display on
Li
ತ
ion batteries
6
NOTE
The charge status can not be indicated while the power
tool is in operation. LED 1 blinks when the battery is
fully discharged or when it is too hot (temperature
above 80°C). The battery must then be inserted in the
charger.
The Li-ion battery features a charge status LED dis-
play. The charge status is indicated by the LEDs on the
battery during charging (please refer to the operating
instructions for the charger). When the battery is not
in use, pressing one of the battery release buttons
or inserting the battery into the power tool causes
the battery charge status to be displayed by the four
LEDs for three seconds.
8. Care and maintenance
CAUTION
Before beginning cleaning, remove the battery from
the power tool in order to prevent unintentional
starting.
8.1 Care of insert tools
Clean off dirt and dust deposits adhering to the insert
tools and protect them from corrosion by wiping the
insert tools from time to time with an oil-soaked rag.
8.2 Care of the power tool
CAUTION
Keep the power tool, especially its grip surfaces,
clean and free from oil and grease. Do not use
cleaning agents which contain silicone.
The outer casing of the power tool is made from
impact-resistant plastic. Sections of the grip are made
from a synthetic rubber material.
Never operate the power tool when the ventilation
slots are blocked. Clean the ventilation slots carefully
using a dry brush. Do not permit foreign objects to
enter the interior of the power tool. Clean the outside
of the power tool at regular intervals with a slightly
damp cloth. Do not use a spray, steam pressure
cleaning equipment or running water for cleaning.
This may negatively affect the electrical safety of the
power tool.
8.3 Care of the Li-ion battery
Avoid entrance of moisture.
Charge the battery fully before using it for the first
time.
In order to achieve maximum battery life, stop dis-
charging the battery as soon as a significant drop in
performance is noticed.
NOTE
If use of the power tool continues, battery discharge
is stopped automatically (indicated by LED 1 blinking)
before the battery cells suffer damage.
Charge the battery with the Hilti charger approved for
use with Li-ion batteries.
NOTE
- A conditioning charge (as is required with NiCd or
NiMH batteries) is not necessary.
- Interruption of the charging procedure has no neg-
ative effect on battery life.
- Charging can be started at any time with no negative
effect on battery life. There is no memory effect (as
with NiCd or NiMH batteries).
- For best results, batteries should be stored fully
charged in a cool dry place. Avoid charging the battery
in places subject to high ambient temperatures (e.g.
at a window) as this has an adverse effect on battery
life and increases the rate of self-discharge.
- If the battery no longer reaches full charge, it may
have lost capacity due to aging or overstressing. It
is possible to continue working with a battery in this
condition but it should be replaced in good time.
8.4 Maintenance
WARNING
Repairs to the electrical section of the power tool
may be carried out only by trained electrical spe-
cialists.
Check all external parts of the power tool for damage
at regular intervals and check that all controls operate
faultlessly. Do not operate the power tool if parts
are damaged or when the controls do not function
faultlessly. If necessary, the power tool should be
repaired by Hilti Service.
8.5 Checking the power tool after care and
maintenance
After carrying out care and maintenance work on
the power tool, check that all protective and safety
devices are fitted and that they function faultlessly.
9. Troubleshooting
Fault
Possible cause
Remedy
The power tool doesn’t run.
The battery is discharged or fitted
incorrectly.
The battery must be heard to en-
gage with a double click or, re-
spectively, needs to be charged.
Electrical fault.
Remove the battery from the power
tool and contact Hilti Service.
The power tool doesn’t run
and 1 LED blinks.
The battery is discharged.
Change the battery and recharge
the discharged battery.
The battery is too hot or too cold.
Bring the battery to the recommen-
ded working temperature.
The on / off switch can’t be
pressed, i.e. the switch is
locked.
The forward / reverse switch is in
the middle position (transport lock
engaged).
Push the forward / reverse switch
to the left or right.
The battery runs down more
quickly than usual.
Battery condition is not optimal.
Have battery condition diagnosed
by Hilti Service or replace with a
new battery.
The battery doesn’t engage
with an audible double click.
The retaining lugs on the battery
are dirty.
Clean the retaining lugs and check
that the battery engages securely.
Contact Hilti Service if the problem
persists.
LED 1 blinks
The battery is discharged.
Charge the battery.
The power tool has been
overloaded (application limits
exceeded).
Use the right power tool for the job
(don’t use a low-powered tool for
heavy work).
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