8 Care and maintenance
CAUTION
Before beginning cleaning, remove the battery from
the power tool or appliance in order to prevent unin-
tentional starting.
8.1 Care of the appliance
The outer casing of the appliance is made from impact-
resistant plastic.
Never operate the appliance 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 appliance. Clean the outside of the appliance at
regular intervals with a slightly damp cloth. Do not use
a spray, steam pressure cleaning equipment or running
water for cleaning. This will negatively affect the electrical
safety of the appliance. Always keep the grip surfaces
of the appliance free from oil and grease. Do not use
cleaning agents which contain silicone.
8.2 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 using the
battery as soon as a significant drop in performance is
noticed.
NOTE
If use of the power tool or appliance 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 negative
effect on battery life.
- Charging can be started at any time, irrespective of
battery charge status, without any 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 storing 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.
8.3 Replacing the bulb
1
1. Unscrew the reflector.
2.
CAUTION Allow the bulb to cool down before
replacing it.
You may otherwise burn your fingers.
Remove the defective bulb.
3.
CAUTION Use only replacement bulbs of the type
specified by the manufacturer.
Fit the replacement bulb into the socket behind the
reflector.
8.4 Maintenance
WARNING
Repairs to the electrical section of the appliance may
be carried out only by trained electrical specialists.
Check all external parts of the appliance for damage
at regular intervals and check that all controls operate
faultlessly. Do not operate the appliance if parts are
damaged or when the controls do not function faultlessly.
If necessary, the appliance should be repaired by Hilti
Service.
8.5 Checking the appliance after care and
maintenance
After carrying out care and maintenance, check that all
protective and safety devices are fitted and that they
function faultlessly.
9 Troubleshooting
Fault
Possible cause
Remedy
The battery runs down more
quickly than usual.
Battery condition is not optimal.
Have the battery condition checked
by Hilti or replace the 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.
en
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Printed: 08.07.2013 | Doc-Nr: PUB / 5135045 / 000 / 01
