CS Unitec DBE 160, Operating Instructions Manual

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In order to protect the operator, the motor and the drill bit the DBE 160
is equipped with a mechanical, electronic overload protection.
Mechanical: If the drill bit is suddenly blocked in the hole, a clutch will slip
disengaging the bit from the motor.
Electronic:
In case of overload due to too large feed force, the motor is
switched off automatically. After discharge, switching OFF
and ON again, drilling can be continued.
The slip clutch should absorb shock and excessive stress. It is an aid and not
an absolute protection. Therefore you have to handle and drill carefully. To
keep in good condition, the clutch should slip for a very short time (max. 2
seconds) in each case only. After excessive wearing the clutch can be
readjusted by an authorized service shop.
The DBE 160 diamond core drill may be used only on the drill rig.
The most common way of fixing is dowel fixing.
If possible, use only metal dowels. The dowel diameter must not be smaller
than 12 mm.
For the vacuum, make sure that it is sufficient ( minimum -0.8 bar). Make sure
that the gaskets are not worn.
Do not forget that the levelling screw may be turned out only up to a certain
extend in order not to destroy the vacuum.
Using the ball valve, adjust a sufficient water quantity to fully flush the
material out of the bore hole.
If mud is depositing around the bore hole, increase the water quantity.
In case that the drill bit does not cut any longer, sharpen it by means of a
grinding stone.
Make sure that the drill bit does not vibrate.
Advance the tool according to bit diameter and machine power.
Overload Protection
Safety Clutch
Fastening of the Drill Rig
Drilling