Hilti DD 250 Bedienungsanleitung Seite 52

Optimum core bit 4th gear
diameter
Ideal distance between the marking
on the anchor base plate and the
hole center
Ideal distance between the marking
on the vacuum base plate and the
hole center
4.2 Permissible core bit diameters for various items of equipment
Note
The approved drilling directions for the various items of equipment must be observed.
Use of a wet/dry vacuum cleaner with a water collection system is mandatory for drilling upwards.
Ø without accessories
Ø with spacer
Ø with water collec-
tion system and wet-
type industrial vacuum
cleaner
4.3 Noise information and vibration values determined in accordance with EN 62841
The sound pressure and vibration values given in these instructions have been measured in accordance
with a standardized test and may be used to compare one power tool with another. They may be used
for a preliminary assessment of exposure. The data given represents the main applications of the power
tool. However, if the power tool is used for different applications, with different accessory tools, or is poorly
maintained, the data may vary. This may significantly increase exposure over the total working period. An
accurate estimation of exposure should also take into account the times when the power tool is switched
off, or when it is running but not actually being used for a job. This may significantly reduce exposure over
the total working period. Identify additional safety measures to protect the operator from the effects of noise
and/or vibration, for example: maintain the tool and the accessories, keep the hands warm, organization of
work patterns.
Noise emission values determined in accordance with EN 62841
Sound (power) level (L
WA
Uncertainty for the sound power level (K
Sound pressure level (L
Uncertainty for the sound pressure level (K
Total vibration (vector sum of three directions), measured in accordance with EN 62841
Triaxial total vibration (vector sum of vibration) at the hand wheel (star handle) does not exceed 2.5 m/s²
(including uncertainty K) in accordance with EN 62841-3-6.
5 Preparations at the workplace
WARNING
Risk of injury. The drill stand may tip over or rotate if inadequately fastened.
▶ Before using the diamond coring machine, fasten the drill stand securely to the working surface
with an anchor or with a vacuum base plate.
▶ Use only anchors of a type suitable for the applicable material and observe the installation
instructions issued by the anchor manufacturer.
▶ Use a vacuum base plate only when the working surface is suitable for fastening the drill stand by
way of the vacuum fastening method.
44 English
Printed: 22.08.2017 | Doc-Nr: PUB / 5245693 / 000 / 02 Printed: 22.08.2017 | Doc-Nr: PUB / 5245693 / 000 / 03
DD 250
12 mm ... 35 mm
330 mm
165 mm
DD 250
12 mm ... 300 mm
12 mm ... 450 mm
12 mm ... 250 mm
)
)
WA
)
pA
)
pA
DD 200 for
DD­HD 30
•/•
330 mm
165 mm
DD 200 for DD­HD 30
35 mm ... 300 mm
35 mm ... 500 mm
35 mm ... 250 mm
109 dB(A)
3 dB(A)
93 dB(A)
3 dB(A)
DD 200 for
DD­ST 200
•/•
380 mm
215 mm
DD 200 for DD­ST 200
35 mm ... 400 mm
35 mm ... 500 mm
35 mm ... 250 mm