Hilti DD-250 E Mode D'emploi page 12

3.4 Instructions and precautions for overhead drilling
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5. Assembling the system components
5.1 Mounting the baseplate taper on the baseplate
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5.3 Fitting the water collector holder to the baseplate taper
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Printed: 07.07.2013 | Doc-Nr: PUB / 5069602 / 000 / 00
When drilling overhead, for safety
reasons, the following equipment
must be used:
1. Baseplate, fastened to the ceiling
using an M16 HKD-E anchor.
2. Water collector complete with
appropriate sealing disc.
3. Hose strain-relief clamp.
4. Water removal hose.
5. Adaptor for vacuum cleaner.
6. PRCD ground fault interruptor
(integral part of supply cord).
7. Supply cord with earth/ground
conductor.
8. Vacuum cleaner suitable for wet
materials.
9. Three-way water connection.
10. Rail stop
Turn off the water supply and drain the
water from the core bit at the three-
way water connector before withdraw-
ing the core bit.
Note: The life of the sealing discs can
be extended by applying a little grease
(e.g. bearing grease) or Hilti lubricant
spray.
1. Baseplate
2. Baseplate taper
3. Mounting screws (4)
4. Wrench
(supplied with the baseplate)
1. Baseplate taper
2. Screw
3. Holder
4. 8 mm AF wrench
4. Technical data
Voltage
Current input:
Power input
Frequency
Core bit diameter range
Core bit diameter range / speeds
1st speed: 275 r.p.m.
2nd speed: 450 r.p.m.
3rd speed: 950 r.p.m.
4th speed: 1800 r.p.m.
Weight (motor unit)
Length of supply cord
Chuck
Electronic idling speed regulator
Overload current regulator
Optical service indicator
Built-in starting current regulator
Electronic motor speed control (hole-starting mode)
Thermal motor overload protection
Mechanical slip clutch
Protection class I, with internal class II design (mains supply with earth / ground
connection required)
Ground fault interruptor (PRCD)
Zero-voltage trip
Approved as per IEC 1029 and EN 61029
Noise and vibration
Typically the A-weighted noise levels of the tool are:
– sound pressure level:
– sound power level:
Wear ear protection.
The typical hand-arm-vibration is below 2,5 m/s
Right of technical modifications reserved!
5.2 Fitting the wheel assembly to the baseplate
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5.4 Changing the chuck
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4
115 V 230 V
20 A 11 A
(CH 10 A)
2200 W 2400 W
(CH 2200 W)
50/60 Hz
25 – 250 mm
172 – 250 mm 6 6 / " – 10")
8
92 – 202 mm 3 5 / " – 9")
8
40 – 102 mm 1 1 / " – 4")
2
25 – 56 mm 1" – 2")
approx. 18 kg
5 meters
DD-C-BU quick-release chuck
6 mA 30 mA
89 dB (A)
102 dB (A)
.
2
1. Baseplate
2. Wheel
3. Screw
4. 19 mm AF wrench
1. Drive shaft
2. Chuck
3. Screws (2)
4. 6 mm AF wrench
(supplied with the chuck)
1
2