Troubleshooting - Hilti TE 500-AVR User Manual

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
The breaker doesn't start.
No hammering action.
The breaker doesn't achieve
full power.
Printed: 03.08.2017 | Doc-Nr: PUB / 5367083 / 000 / 00
Possible cause
Interruption in the electric supply.
The electronic restart interlock is
activated after an interruption in
the electric supply.
The generator is in sleep mode.
A fault has occurred in the tool.
The carbon brushes are worn.
The power tool is too cold.
The extension cord is too long or
its gauge is inadequate.
The control switch is not fully
pressed.
Action to be taken
▶ Plug in another electric tool or
appliance and check whether it
works.
▶ Switch the power tool off and
then on again.
▶ Apply a load to the generator
by connecting a second power
consumer (e.g. worklight).
Switch the tool off and then on
again.
▶ Have the product repaired by
Hilti Service.
▶ Have checked by a trained elec-
trical specialist and replaced if
necessary.
▶ 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.
▶ Use an extension cord of an
approved length and / or of
adequate gauge.
▶ Press the control switch as far
as it will go.
English 13