Connecting To The Mains Supply - Hilti DD-250 E Mode D'emploi

7.17 Connecting to the mains supply

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7.18 Using the cross column adaptor
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8. Operation
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Printed: 07.07.2013 | Doc-Nr: PUB / 5069602 / 000 / 00
1. Plug – type depends on country
2. PRCD ground fault interruptor
3. ON-switch for PRCD (ON)
4. Test button (TEST)
5. Indicator
6. Supply cord
7. Monitor unit ON / OFF switch
The PRCD interruptor must be tested
for correct operation each time before
beginning work.
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1. Check that the motor is switched
off.
2. Connect the plug to the mains
supply.
3. Press the ON button. The lamp
must light!
4. Press the TEST button. The lamp
must extinguish!
5. Press the ON button again before
beginning operation.
In the case of a malfunction (test
failed), the unit must be checked by
an electrical specialist before work
with the equipment continues!
1. Baseplate
2. Baseplate taper
3. Quick-release spindle
4. Rail
5. Taper
6. Eccentric pin
7. Bracing spindle
8. Cross column adaptor
9. Handwheel for cross column
adaptor
10. Locking locking device
11. Cross column adaptor taper
12. Carriage
13. Handwheel
14. DD-250 E motor unit
Support the horizontal rail before
releasing the angle adjustment clamp
and locking device.
1. Select the correct drilling speed.
(Change speed only when rotation has stopped)
2. Release the carriage locking device.
3. Guide the core bit into the water collector.
4. Open the water supply valve.
5. Select hole-starting mode.
6. Switch on the motor.
7. Begin drilling and switch from hole-starting mode to normal drilling mode
(hole-starting mode is not suitable for prolonged drilling).
8. PRCD ground fault interruptor
9. ON-switch for PRCD (ON)
10. Test button (TEST)
11. Indicator
(When using a vacuum baseplate, ensure that the vacuum indicator remains wit-
hin the green area).
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Tips
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■ In order to avoid vibration when starting holes, select hole-starting mode and
reduce feed pressure.
■ If steel reinforcement is contacted, select lower drilling speed and reduce
water flow.
(Obtain permission from authorised person before cutting through steel rein-
forcement.)
■ The diamond segments can become polished (reduced cutting performance)
if drilling feed pressure is too low.
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■ Inadequate water flow will cause overheating, resulting in serious damage to
the core bit.
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■ Reduce drilling feed pressure if the overload current regulator is activated.
■ Water flow rates
25 – 47 mm dia.
52 – 132 mm dia.
142 – 250 mm dia. max. 4 l/min.
max. 1 – 1.5 l/min.
max. 3 l/min.