Hilti DD 250 Bedienungsanleitung Seite 49

Time remaining until the
carbon brushes are to be
replaced
Service indicator
Running in after the car-
bon brushes have been
replaced
Overheating
Fault in the power supply
Restart interlock
3.5 DD 200: Service indicator and drilling performance indicator
The diamond core drilling machine is equipped with a service indicator and an LED drilling performance
indicator. For the following indicators, the diamond core drilling machine must be ready for operation
(plugged in and with a switched-on PRCD).
Printed: 22.08.2017 | Doc-Nr: PUB / 5245693 / 000 / 03 Printed: 22.08.2017 | Doc-Nr: PUB / 5245693 / 000 / 02
The diamond core drilling machine is running. The carbon brush wear
limit has almost been reached. The indicator helps ensure that the carbon
brushes are replaced in good time. The time remaining until the diamond
core drilling machine automatically switches off is displayed in hours and
minutes. The indicator is automatically hidden after a few seconds.
The carbon brushes are worn. The carbon brushes must be replaced.
An internal fault has occurred.
The diamond core drilling machine is running. The carbon brushes have
been changed and must be run in by letting the machine run under no load
for at least one minute without interruption, in order to achieve the optimum
service life. The indicator displays the time remaining until the running-in
process is completed.
The diamond core drilling machine has overheated. It is no longer running
or is in cool-down mode. The indicator displays the time remaining until
the diamond core drilling machine cools down. If the diamond core drilling
machine is still too hot after this time has elapsed, the remaining running
time starts from the beginning again.
Undervoltage occurred in the supply network. In the event of undervoltage,
the diamond core drilling machine cannot be operated at full power.
Note
The indicator is automatically hidden after a few seconds.
Maximum running time with hole-starting mode active has been exceeded;
Fault in the power supply; The diamond core drilling machine has been
overloaded; Overheated, water has entered the motor or the cooling run-
ning time has ended.
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