Care And Maintenance; Troubleshooting - Hilti AG 125-A22 Mode D'emploi

CAUTION
Breathing protection must be worn if the power tool
is used without a dust removal system for work that
creates dust.
WARNING
Avoid touching rotating parts. Switch the power tool
on only after bringing it into position at the workpiece.
Touching rotating parts, especially rotating insert tools,
may lead to injury.
CAUTION
The insert tool may get hot during use. Wear protective
gloves when changing insert tools.
WARNING
Reduce the load on the power tool by avoiding tilting
the disc in the kerf when cutting. The disc or wheel
may otherwise break, or the power tool may kick back or
stall.

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 the power tool
DANGER
Under extreme conditions, when used for working on
metal, conductive dust may accumulate inside the tool.
In this case, use of a stationary dust extraction sys-
tem and frequent cleaning of the ventilation slots are
recommended.
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

9 Troubleshooting

Fault
The battery runs down more
quickly than usual.
The battery doesn't engage with
an audible click.
CAUTION
Improve the blood circulation in your fingers by re-
laxing your hands and exercising your fingers during
breaks between working.
WARNING
Keep inflammable materials away from the working
area.
7.1 On / off switch with switch-on interlock 8
The on / off switch with safety lock (switch-on interlock)
gives you full control of the switch function and avoids
unintentional restarting.
1.
2.
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.
8.2 Maintenance
WARNING
Do not operate the tool if parts are damaged or
when the controls do not function faultlessly. Have
the power tool repaired by Hilti Service.
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.
8.3 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
Battery condition is not optimal.
The retaining lugs on the battery are
dirty.
Push the safety lock (switch-on interlock) forward to
unlock the on / off switch and then press the switch
fully.
The safety lock (switch-on interlock) returns auto-
matically to the locked position when the on / off
switch is released.
maintenance
Remedy
Have battery condition diagnosed by
Hilti Service or replace with a new
battery.
Clean the retaining lugs and check
that the battery engages securely.
Contact Hilti Service if the problem
persists.
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