Hilti TE 40 Manual page 21

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
Power tool does not start.
No hammering action.
Combihammer does not
achieve full power.
Printed: 29.05.2017 | Doc-Nr: PUB / 5070954 / 000 / 04
Possible cause
Interruption in the electric supply
The electronic restart interlock is
activated after an interruption in
the electric supply.
Generator with sleep mode.
The power tool is too cold.
Function selector switch set to the
position.
The cross-section of the extension
cord conductors is inadequate.
The voltage provided by the elec-
tric supply is too low.
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.
▶ Bring the tip of the drill bit
into contact with the working
surface, switch the rotary
hammer on and allow it to
run. If necessary, repeat the
procedure until the hammering
mechanism begins to operate.
▶ Set the function selector switch
to the position.
▶ Use an extension cord with
an adequate conductor cross-
section.
▶ Connect the combihammer to a
different electric supply.
English 17