Hilti DCH 300 Operating Instructions Manual page 24

The machine may be operated only when connected to a power supply providing a voltage and frequency in
compliance with the information given on its type identification plate.
Do not use the machine where there is a risk of fire or explosion.
Working on materials hazardous to the health (e.g. asbestos) is not permissible.
Observe the national health and safety requirements.
Modification of the machine or tampering with its parts is not permissible.
2.2 Switches
On/off switch with switch-on interlock
2.3 Starting current limitation
The starting current drawn by the power tool is several times higher than its rated current. The electronic starting
current limiter reduces the starting current drawn by the power tool and thus prevents the mains fuse blowing. It also
allows the power tool to start smoothly, without a jolt.
2.4 Restart interlock
The power tool does not restart by itself after an interruption in the electric supply. The switch must first be released
and then pressed again after approx. 1 second.
2.5 TPS theft protection system (optional)
The power tool may be optionally equipped with the TPS theft protection system. If equipped with this feature, the
power tool can be unlocked and made ready for operation only through use of the corresponding TPS key.
2.6 LED indicators
Service indicator LED (see section "Care and maintenance")
Theft protection system indicator (optional) (see section "Operation")
2.7 Guard (hood) with guide wheels
Cutting and slitting work on stone may be carried out only when the power tool is equipped with a dust hood with
wheels.
2.8 Electronic overload protection
This power tool is equipped with electronic overload protection.
The electronic overload protection system monitors the current input and thus prevents overloading of the tool during
use.
The power tool switches itself off automatically when excessive pressure is applied resulting in excessively high
electric current input.
After releasing the on / off switch, the power tool can be restarted.
The user can prevent activation of this automatic cut out by reducing the pressure applied to the tool.
The user should aim to work continuously with the tool without activation of the automatic cut-out.
2.9 Using extension cords
Use only extension cords of a type approved for the application and with conductors of adequate gauge. The power
tool may otherwise lose performance and the extension cord may overheat. Check the extension cord for damage at
regular intervals. Replace damaged extension cords.
Recommended minimum conductor gauge (cross section) and max. cable lengths
Conductor cross section
Mains voltage 100V
Mains voltage 110-120 V
Mains voltage 220-240 V
Do not use extension cords with a conductor cross section of less than 1.5 mm².
1.5 mm² 2.0 mm²
-
30 m
- -
-
30 m
2.5 mm² 3.5 mm²
-
50 m
-
40 m
-
50 m
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