Switching The Machine Off - Hilti DD 30-W Mode D'emploi Original

10. Regulate the contact pressure while observing the drilling performance indicator.
Adjust the pressure applied so that the machine continues to run at full speed. Optimum drilling
performance will then be achieved (the drilling performance indicator lights green). Higher contact
pressure will not increase the drilling performance (the drilling performance indicator lights red).
Keep an eye on the water flow rate while drilling is in progress. Check the water flow rate indicator.
6.3 Drilling with a 600 mm core bit
1. Start the hole by predrilling with a 300 mm core bit.
WARNING
Risk of injury. Drilling with the 600 mm core bit without predrilling may cause loss of control of the machine
resulting in damage and injury.
▶ Always predrill (use a shorter core bit to start the hole). Before continuing drilling, ensure that the 600
mm core bit is inserted all the way to the base of the predrilled starting hole.
2. After changing the core bit, keep the machine switched off and guide the 600 mm core bit into the
predrilled hole, all the way to the base of the hole.
3. Continue drilling.
6.4

Switching the machine off

1. Switch the machine off when the desired drilling depth is reached or when the through-hole has been
completed. If you are using the switch lock, release the lock by pressing the on/off switch.
WARNING
Risk of injury! The core, or pieces of it, may be hurled out if the water collector is lifted away from the
working surface while the core bit is still rotating. This presents a risk of injury.
▶ Lift the water collector away from the working surface only after the core bit has stopped rotating.
2. Withdraw the core bit from the hole as the machine slows down, but before it stops.
▶ The water supply (water on/off) is controlled automatically by the machine's on/off switch.
6.5 Removing and emptying the core bit
1. Unplug the supply cord from the power outlet.
CAUTION
Risk of injury when changing the tool! The tool becomes hot as a result of use. It may have sharp edges.
▶ Always wear protective gloves when changing the tool.
WARNING
Risk of injury. The drilled-out core, or parts of it, may fall out of the core bit.
▶ Take care to ensure that the core doesn't fall out of the core bit inadvertently. Remove all parts of the
core from the core bit.
2. Open the chuck. To do this, pull the chuck locking lever up as far as it will go.
Hold the machine with the tip of the core bit pointing slightly downwards so that the water
remaining in the core bit can flow out.
3. Rotate the core bit as far as it will go.
4. Pull the core bit out of the chuck.
5. Tilt the core bit slightly away from the imaginary extension of the chuck axis.
6. Pull the core bit out of the water collector.
7. Hold the core bit securely and shake it until the core falls out through the connection end towards the
rear. If parts of the core remain stuck in the core bit, tap the end of core bit vertically downwards against
a soft object (wood or plastic) or use a thin rod (e.g. the depth gauge) to push out the core.
8. Close the chuck locking lever.
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2048398 English 17