Operating Instruction TE 500 (03)

English 13
Maintenance
WARNING
Danger of electric shock! Improper repairs to electrical components may lead to serious injuries including
burns.
▶ Repairs to the electrical section of the tool or appliance may be carried out only by trained electrical
specialists.
• At regular intervals, check all visible parts and the controls for signs of damage and make sure that they
all function correctly.
• Do not operate the power tool if signs of damage are found or if parts malfunction. Have damage repaired
immediately by Hilti Service.
• After cleaning and maintenance, refit all guards or protective devices and check that they function
correctly.
7 Transport and storage
• Do not transport electric tools with accessory tools fitted.
• Always unplug the supply cord before storing an electric tool or appliance.
• Store tools and appliances in a dry place where they cannot be accessed by children or unauthorized
persons.
• Check electric tools or appliances for damage after long periods of transport or storage.
8 Troubleshooting
If the trouble you are experiencing is not listed in this table or you are unable to remedy the problem by
yourself, please contact Hilti Service.
8.1 Troubleshooting
Trouble or fault Possible cause Action to be taken
The breaker doesn’t start. Interruption in the electric supply. ▶ Plug in another electric tool or
appliance and check whether it
works.
The electronic restart interlock is
activated after an interruption in
the electric supply.
▶ Switch the power tool off and
then on again.
The generator is in sleep mode. ▶ Apply a load to the generator
by connecting a second power
consumer (e.g. worklight).
Switch the tool off and then on
again.
A fault has occurred in the tool. ▶ Have the product repaired by
Hilti Service.
The carbon brushes are worn. ▶ Have checked by a trained elec-
trical specialist and replaced if
necessary.
No hammering action. The power tool is too cold. ▶ Bring the tip of the accessory
tool into contact with the
working surface, switch the
power tool on and allow it to
run. If necessary, repeat the
procedure until the hammering
mechanism begins to operate.
The breaker doesn’t achieve
full power.
The extension cord is too long or
its gauge is inadequate.
▶ Use an extension cord of an
approved length and / or of
adequate gauge.
The control switch is not fully
pressed.
▶ Press the control switch as far
as it will go.
Printed: 02.02.2018 | Doc-Nr: PUB / 5367085 / 000 / 01