Hilti NPU 100-22 Original Operating Instructions page 10

Use only the punching dies available through the manufacturer.
Before work commences, all live cables and other equipment carrying electric voltage within the area in
which the user is working must be switched off. If this is not possible, the corresponding safety precautions
for working in proximity to live cables or equipment must be implemented and observed.
• For this product, use only Hilti Nuron lithium-ion batteries of the B 22 series. For optimum performance,
Hilti recommends the batteries stated in the table at the end of these operating instructions for this
product.
• For these batteries, use only Hilti chargers of the type series stated in the table at the end of these
operating instructions.
3.3 Possible misuse
• Do not use this hand-held product clamped in a fixed position or as a stationary device.
• Do not punch electrically live parts.
• Do not use the product in heavy rain or under water.
3.4 Status indicators of the Li­ion battery
Hilti Nuron Li-ion batteries can indicate state of charge, fault messages and the battery's state of health.
3.4.1 Indicators for state of charge and fault messages
WARNING
Risk of injury by a falling battery!
▶ If the release button is pressed with a battery inserted in the product, subsequently check that the battery
is correctly re-engaged and secure.
Short-press the release button of the battery to get whichever of the following status indications is applicable
at the time.
State of charge and, if applicable, faults are indicated constantly as long as the connected product is
switched on.
Status
Four (4) LEDs show constantly green
Three (3) LEDs show constantly green
Two (2) LEDs show constantly green
One (1) LED shows constantly green
One (1) LED slow-flashes green
One (1) LED quick-flashes green
One (1) LED quick-flashes yellow
One (1) LED shows yellow
One (1) LED quick-flashes red
3.4.2 Indicators showing the battery's state of health
To check the battery's state of health, press the release button and hold it down for longer than three
seconds. The system does not detect a potential malfunction of the battery due to misuse, for example
battery dropped or pierced, external heat damage, etc.
6 English
Meaning
State of charge: 100 % to 71 %
State of charge: 70 % to 51 %
State of charge: 50 % to 26 %
State of charge: 25 % to 10 %
State of charge: < 10 %
The Li-ion battery is completely discharged.
Recharge the battery.
If the LED again starts quick-flashing after the bat-
tery has been charged, consult Hilti Service.
The Li-ion battery or the product in which it is in-
serted is overloaded, too hot or too cold, or experi-
encing some other fault.
Bring the product and the battery to the recom-
mended working temperature and do not overload
the product when it is in use.
If the message persists, consult Hilti Service.
The Li-ion battery and the product in which it is
inserted are not compatible. Consult Hilti Service.
The Li-ion battery is locked and cannot be used.
Consult Hilti Service.
2321734
*2321734*