Care And Maintenance; Troubleshooting - Hilti WSC 70 Mode D'emploi

7 Care and maintenance

CAUTION
Ensure that the power tool is disconnected from the
electric supply.
7.1 Care of saw blades
Clean off dirt and dust deposits adhering to the blades
en
and protect them from corrosion by wiping from time to
time with an oil-soaked rag.
7.2 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

8 Troubleshooting

Fault
The power tool doesn't achieve
full power.
The power tool doesn't start.
The on / off switch can't be
pressed, i.e. the switch is
locked.
No / reduced suction power.
24
running water for cleaning. This may negatively affect the
electrical safety of the power tool.
7.3 Maintenance
WARNING
Repairs to the electrical section of the power tool may
be carried out only by trained electrical specialists.
CAUTION
If the power tool's supply cord is damaged it must
be replaced with a specially-prepared supply cord
available from Hilti Customer Service.
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.
7.4 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 extension cord is too long or its
gauge is inadequate.
The voltage provided by the electric
supply is too low.
Interruption in the electric supply.
The supply cord or plug is defective.
The on / off switch is defective.
The carbon brushes are worn.
Not a fault (safety function).
Chip ejector channel blocked.
maintenance
Remedy
Use an extension cord of an
approved length and / or of adequate
gauge.
Connect the power tool to a different
power source.
Plug in another electric appliance and
check whether it works.
Have it checked by a trained electrical
specialist and replaced if necessary.
Have it checked by a trained electrical
specialist and replaced if necessary.
Have it checked by a trained electrical
specialist and replaced if necessary.
Press the switch-on interlock.
Clean out the chip ejector channel.