Hilti DD 250 Bedienungsanleitung Seite 47

The product described is designed for professional use and may be operated, serviced and maintained only
by trained, authorized personnel. This personnel must be informed of any particular hazards that may be
encountered. The product described and its ancillary equipment may present hazards when used incorrectly
by untrained personnel or when used not as directed.
▶ Always use a drill stand when using the diamond core drilling machine. The drill stand must be sufficiently
anchored in the base material by an anchor or vacuum base plate.
▶ Do not use a hammer or other heavy object when making adjustments to the base plate.
▶ The tool may be operated only when connected to a power supply providing a voltage and frequency in
compliance with the information given on its rating plate.
▶ Observe the national health and safety requirements.
▶ Observe the safety rules and operating instructions for the accessories used.
▶ To reduce the risk of injury, use only genuine Hilti core bits and accessories.
3.4 DD 250: Display symbols and explanations on the multifunction display of the diamond core
drilling machine
For the following indicators, the diamond core drilling machine must be ready for operation (plugged in and
with a switched-on PRCD).
Status bar for information
Status bar for warning
messages
Spirit level
Gear indicator for first to
fourth gear
Hole-starting mode is
active
Printed: 22.08.2017 | Doc-Nr: PUB / 5245693 / 000 / 02 Printed: 22.08.2017 | Doc-Nr: PUB / 5245693 / 000 / 03
The status bar displays various pieces of information regarding the ma-
chine's current status, such as the gear engaged or the activated hole-
starting mode.
The status bar displays various warning indicators that do not cause the
diamond core drilling machine to stop immediately, such as (from right to
left) time remaining until the carbon brushes have to be replaced, when
service is necessary or if there is a fault in the power supply.
The diamond core drilling machine is not switched on. The indicator helps
level the system and align the drill stand when drilling at an angle. The
indicator displays the alignment of the diamond core drilling machine
symbolically and in degrees.
Note
Angular accuracy at room temperature: ±2°
The diamond core drilling machine is running under no load. The indicator
helps ensure that the gear engaged is suitable for the diamond core bit
used. At the top left, the indicator displays the gear engaged and in the
center, the recommended core bit diameter range in millimeters and inches
for this gear.
The diamond core drilling machine is switched off or running under no load.
The function makes it possible to start holes with low vibration in the case
of core bits with a large diameter. This function can be deactivated at any
time by pressing the button for the hole-starting mode again
Note
The indicator is automatically hidden after a few seconds.
English 39