Using The Rota-Rail (Column Swivel); Procedure In The Event Of The Core Bit Jamming; Using The Hand Wheel To Free The Core Bit; Using An Open-End Wrench To Free The Core Bit - Hilti DD 150-U Manual De Instrucciones Original

2. Switch the machine to continuous operation with the continuous running lock.
3. Release the carriage lock.
4. Turn the hand wheel until the diamond core bit is in contact with the work surface.
5. When you start drilling apply only light pressure until the core bit has centered itself. Then apply more
pressure.
6. Watch the drilling performance indicator and adjust contact force accordingly.
6.16

Using the Rota-Rail (column swivel)

The Rota-Rail allows quick and easy access to the hole or core being drilled, with no need to partly or
fully dismantle the system.
WARNING
Risk of injury caused by incorrect use! The drill stand can be damaged or it can break.
▶ Never use the Rota-Rail as a column extension.
1. Lock the carriage on the rail with the carriage lock. Check to ensure that it is securely fastened.
2. Remove the end stop screw from the end of the rail.
3. Attach the Rota-Rail so that the toothed racks are facing the same direction.
4. Tighten the screw on the Rota-Rail securely.
5. Release the carriage lock and run the carriage along the rail on to the Rota-Rail.
6. Slacken the securing screws of the Rota-Rail and turn the device to the left or right with the Rota-Rail.
This will give you access to the drillhole.
7. Remove the core or change the core bit.
8. Turn the tool with the Rota-Rail back to its original position and tighten the securing screws of the
Rota-Rail. Move the tool back to the column of the stand to resume work.
9. After removing the Rota-Rail, refit the end stop screw to the end of the rail.
6.17

Procedure in the event of the core bit jamming

If the bit jams the safety clutch disengages. The electronic control system then switches the motor off and
subsequently on again; this is done twice without manual intervention by the user. If this does not free the
core bit, the electronic control system switches the motor off for 90 seconds. You can free a jammed bit
manually, as follows:

6.17.1 Using the hand wheel to free the core bit

1. Unplug the supply cord from the power outlet.
2. Free the core bit from the base material by turning the hand wheel.
3. Plug the supply cord into the power outlet.
4. Resume the drilling operation.

6.17.2 Using an open-end wrench to free the core bit

1. Unplug the supply cord from the power outlet.
2. Grip the diamond core bit with a suitable open-end wrench close to the connection end and turn the
diamond core bit to free it.
3. Plug the supply cord into the power outlet.
4. Resume the drilling operation.
7

Care, maintenance, transport and storage

7.1

Care and maintenance

WARNING
Electric shock hazard! Attempting care and maintenance with the supply cord connected to a power outlet
can lead to severe injury and burns.
▶ Always unplug the supply cord before carrying out care and maintenance tasks.
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Printed: 05.02.2019 | Doc-Nr: PUB / 5069546 / 000 / 06
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