Rothenberger RODIADRILL 160 Bedienungsanleitung Seite 21

Wet drilling
Danger due to electric shock! Always carry out work using a water extraction device
when wet drilling overhead. The water extraction device must be in a flawless condition!
Turn on the water connection and switch on the water extractor. There must at least be suf-

ficient water pressure (max. 4 bar!) to move the arising drilling mud from the borehole.
Freehand operation wet suction: Insert the drill bit into the water suction ring while it is sta-

tionary and check before whether the water suction device has been firmly stuck by suck-
ers to the wall or the floor and is being held firmly.
Attention: Never drill from the bottom up when using the centering aid in order to avoid the
danger of an accident in the event of unintentional release of the centering aid. The water
suction ring can come loose during drilling!
 Switch on the motor.
 Apply the diamond drill bit and continue to drill using light, consistent follow-up pressure.
 Occasionally with draw the drill bit slightly from the bore so that the drilling mud or dust is
removed.
 Shut down the motor once the desired drilling depth has been achieved and pull the drilling
bit out of the borehole slowly.
 Stop the supply of water and shut down the water extractor.
 If no more boreholes are required, allow the motor to run again for a few seconds without
water supply in order to press the remaining water out of the rinsing bush of the motor.
In case of seizure, start up the drill motor again at low speed using cooling water and
withdraw the core bit!
In case of need, repeat the process or turn the core bit using the flat wrench. Attention:
Switch off the PRCD switch!
Optional: Dry drilling
Reinforced concrete only wet drilling!
 Switch on the motor and the vacuum cleaner.
 Apply the diamond drill bit and continue to drill using light, consistent follow-up pressure.
 Occasionally with draw the drill bit slightly from the bore so that the drilling mud or dust is
removed.
 Shut down the motor once the desired drilling depth has been achieved and pull the drilling
bit out of the borehole slowly
 Shut down the vacuum cleaner.
Removal of the drilling core on through borings
Please take precautions to prevent physical injuries or property damage!
 Allow the drilling core to fall out of the bit.
If the core should jam in the bit, use a rod to push it out from the rear!
Avoid damage to the ground!
On no account use a hammer or spanner to hit the outside of the drill bit in order to
release the core. This could deform the pipe and it would then definitely no longer be
possible to remove the drilling core from the bit.
Removal of the drilling core from tapped blind holes
 Use a screwdriver, chisel or similar tools to penetrate the annular gap that has emerged
and break and remove the core by means of a brief, forceful lateral jerk or hammer blow.
The deeper the borehole, the easier it is to break the cores. Thus, optimal results are achieved if
the borehole depth is at least the same as the diameter of the drill bit.
ENGLISH 19