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8. Care and maintenance
CAUTION
Before beginningcleaning, removethe batteryfrom
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
The outer casing of the power tool is made from
impact-resistantplastic. Sectionsofthe griparemade
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. Always keep the grip surfaces of the
power tool free from oil and grease. Do not use
cleaning agents which contain silicone.
8.3 Care of the NiCd battery
Keep the electrical contacts free from dust, oil and
grease. If necessary, use a clean cloth to clean the
contact surfaces. The battery must be recharged as
soon as the power tool’s performance drops notice-
ably or when the deep discharge prevention system
becomes active.
NOTE
Please refer to the operating instructions for the
charger for further information about charging the
battery.
8.4 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, further battery
discharge will be stopped automatically 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 bestarted at anytime with no negative
effect battery life. There is no memory effect (as with
NiCd or NiMH batteries).
- For best results, batteries should be stored fully
chargedina cooldryplace.Avoidchargingthe 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.
8.5 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 regularintervals andcheck that all controls operate
faultlessly. Do not operate the power tool if parts
are damaged or when the controls do not function
faultlessly. Have the power tool repaired by Hilti
Service.
8.6 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.
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