Care And Maintenance; Troubleshooting - Hilti WSC 7.25-A36 Manual De Instrucciones

8 Care and maintenance

CAUTION
Before beginning cleaning, remove the battery from
the power tool in order to prevent unintentional start-
ing.
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 clean-
ing 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 NiCd battery
Avoid entrance of moisture.
Keep the electrical contacts free from dust, oil and
grease. If necessary, use a clean cloth to clean the con-
tact surfaces. The battery must be recharged as soon as
the power tool's performance drops noticeably 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.

9 Troubleshooting

Fault
The power tool doesn't run.
In order to achieve maximum battery life, stop discharging
the battery as soon as a significant drop in performance
is noticed.
NOTE
If use of the power tool continues, further battery dis-
charge 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
- Interruption of the charging procedure has no negative
- Charging can be started at any time with no negative
- For best results, batteries should be stored fully
- If the battery no longer reaches full charge, it may
8.5 Maintenance
WARNING
Repairs to the electrical section of the power tool may
be carried out only by trained electrical specialists.
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.
Have the power tool repaired by Hilti Service.
8.6 Checking the power tool after care and
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.
Possible cause
The battery is discharged or fitted
incorrectly.
Electrical fault.
The battery is discharged/hot.
NiMH batteries) is not necessary.
effect on battery life.
effect on battery life. There is no memory effect (as
with NiCd or NiMH batteries).
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.
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.
maintenance
Remedy
The battery must be heard to engage
with a double click or, respectively,
needs to be charged.
Remove the battery from the power
tool and contact Hilti Service.
Deep discharge prevention / the elec-
tronics switch off. Insert the battery in
the charger or allow it to cool down.
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