Hilti NPU 100 IP-A22 Original Operating Instructions page 23

8.1 The punching tool is not in working order.
Malfunction
The LEDs on the battery indi-
cate nothing.
1 LED on the battery blinks.
4 LEDs on the battery blink.
Red LED => lights continu-
ously and a warning tone is
emitted.
Red LED => blinks at short
intervals and a warning tone
is emitted.
Red LED => lights briefly and
no warning tone is emitted.
8.2 The punching tool is in working order.
Trouble or fault
The battery runs down more
quickly than usual.
The battery does not engage
with an audible double click.
Red LED => lights continu-
ously and a warning tone is
emitted.
9 Disposal
Most of the materials from which Hilti tools and appliances are manufactured can be recycled. The
materials must be correctly separated before they can be recycled. In many countries, your old tools,
machines or appliances can be returned to Hilti for recycling. Ask Hilti Service or your Hilti representative
for further information.
Battery disposal
Improper disposal of batteries can result in health hazards from leaking gases or fluids.
▶ DO NOT send batteries through the mail!
▶ Cover the terminals with a non-conductive material (such as electrical tape) to prevent short circuiting.
▶ Dispose of your battery out of the reach of children.
▶ Dispose of the battery at your Hilti Store, or consult your local governmental garbage disposal or public
health and safety resources for disposal instructions.
▶ Do not dispose of power tools, electronic equipment or batteries as household waste!
10 RoHS (Restriction of Hazardous Substances)
Click on the link to go to the table of hazardous substances: qr.hilti.com/r7794537.
There is a link to the RoHS table, in the form of a QR code, at the end of this document.
*2207117*
Possible cause
The battery is not correctly in-
serted.
The battery is discharged.
The battery is too hot or too cold.
The battery is discharged.
The battery is too hot or too cold.
Product momentarily overloaded.
Technical problem.
The state of charge of the battery
is too low to allow a complete op-
erating cycle.
Product overheated.
Possible cause
Very low ambient temperature.
The retaining lugs on the battery
are dirty.
Technical problem.
2207117
Action to be taken
▶ Push the battery in until it
engages with a double click.
▶ Change the battery and charge
the empty battery.
▶ Allow the battery to cool
down or to warm up to room
temperature.
▶ Change the battery and charge
the empty battery.
▶ Allow the battery to cool
down or to warm up to room
temperature.
▶ Allow the product to cool down.
▶ Incorrect operation is possible!
Contact Hilti Service.
▶ Change the battery and charge
the empty battery.
▶ Allow the product to cool down.
Action to be taken
▶ Allow the battery to warm up
slowly to room temperature.
▶ Clean the retaining lugs and refit
the battery.
▶ Incorrect operation is possible!
Contact Hilti Service.
English 19