Hilti DD 120 Mode D'emploi page 8

WARNING
The machine may be operated only when connected to an adequately-rated electric supply equipped with an
earth (ground) conductor.
WARNING
Drilling into materials hazardous to the health (e.g. asbestos) is not permissible.
en
DANGER
Use only the genuine Hilti accessories or ancillary equipment listed in the operating instructions. Use of
accessories or ancillary equipment not listed in the operating instructions may present a risk of personal injury.
2.2 Use of the system with various items of equipment
Equipment
With water collection system and wet-type in-
dustrial vacuum cleaner
Without water collection system and wet-type
industrial vacuum cleaner
With water collection system
* The machine's drilling diameter capacity can be found on the rating plate.
2.3 Gears and corresponding core bit diameters
Gear
1
2
* The machine's drilling diameter capacity can be found on the rating plate.
NOTE
Second gear may be used to achieve faster progress when drilling holes up to 82 mm (3¹/₂") in diameter in lightly
reinforced concrete.
2.4 Status indicator 1
LED indicators
Theft protection indicator (10)
Service indicator (1)
Drilling performance display (2)
4
All manuals and user guides at all-guides.com
Core bit diameters
16...132 mm (162*)
16...132 mm (162*)
16...132 mm (162*)
Core bit diameters
(mm)
57...132
16...52
State
Blinking yellow light
Red light and the machine
starts
Red light and the machine
doesn't start
Blinking red light
Orange light
Green light
Red light
Blinking red light
Drilling direction
All directions
Not upwards
Not upwards
No-load speed
Core bit diameters
(inches) (r.p.m.)
2¹⁄₄...5¹⁄₄ 650
⁵⁄₈...2 1,380
Description / information
The machine's theft protection system
is active and must be unlocked with the
TPS key.
The carbon brushes are badly worn.
After the lamp lights for the first time,
the machine may continue to be used
for several hours before the automatic
cut-out is activated. Have the carbon
brushes changed in good time so that
the machine is always ready for use.
The carbon brushes must be changed.
Motor speed error, see section
"Troubleshooting".
Contact pressure too low
Optimum contact pressure
Contact pressure too high
The machine has temporarily
overheated, see section
"Troubleshooting".