Norton Clipper CDR 252 Operating Instructions Manual page 16

VERS.2015.04.21
5.2.2 Fixing the rig
Only use NORTON tools to fix the rig. Always fix the rig before assembling the motor on the
rig. When drilling overhead or horizontally into a wall, extra safety provision should be made
with the use of a support sling to the drilling rig, in case of failure of anchor or vacuum.
Fixation with a dowel
To fix the drill rig, you need a 15mm-dowel, a 30cm-long threaded rod, a washer and a wing
nut.

Bore a 15mm-diameter and 50mm-depth hole and clean it.

Use the appropriate tool to set the dowel in the hole.

Screw the threaded rod in the dowel.

Place the rig so that the threaded rod goes through the oblong hole in the base.

Insert the washer on the rod, and screw the wing nut thoroughly.

You can adjust the rig by using the screws in the corners of the base.
Fixation with a vacuum pump

Fix the pump on the base of the rig.

Place the rubber joint under the base.

Place the machine where you want to bore, and hold it firmly.

Start the vacuum pump. You have to reach a pressure under 0,65bar to have a sufficient
adhesion of the rig.

If you cannot reach this pressure, try to smooth the surface for example with plaster.
5.2.3 Drilling perpendicularly to the surface
Once your motor is engaged on the right gear, and the rig placed and fixed at the right
position, you can begin your cut. Follow these instructions:

Put the handle back on the nut, which allows the movement of the cutting head.

Engage the P.R.C.D.

Open the water supply.

Start the motor with the core bit not touching the surface.

Using the handle, lower slowly the core bit until it lightly touches the surface.

Slowly turn the handle to make the first centimetre of your drilling. By doing so, you
ensure that your hole will be perfectly centred.

You can then increase the drilling feed speed. If you drill too slowly, you lower the
machine efficiency. Drilling too fast results in premature wear of the diamond segments.
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CDR 252_MAN_EN