Friction Clutch - Weka DKS32 Manual Original

Volume flow:
Vacuum at least:
The surface must be smooth and flat in order to fasten with vacuum. Use on plaster or brickwork is not permitted.
Once the vacuum connection has been established, gently attach the levelling screws to the base material so that
the drill stand is in a rigid position and the sealing ring relaxes slightly. Otherwise the drill stand will sit very softly on
the sealing ring. In order to connect the vacuum pump and vacuum set, please read and follow the respective oper-
ating instructions.
The safety and operating instructions for the vacuum pump and vacuum set must be strictly ob-
served.
Fixing in place with a quick-clamping column
You can fix the drill stand in place between the floor and ceiling using a quick-clamping column Place one end of the
quick-clamping column on the base plate of the drill stand. The contact surface on the ceiling for the other end of the
quick-clamping column must be sufficiently stable so that it cannot slip.
To fix the quick-clamping column in place, read and follow the operating instructions provided with it.
4.4 Mains switch and integral over current protection
After having switched on the motor starts softly. If the machine is being overloaded, the motor electronic switches
over to the pulsating operation for showing the operator the overload. If the force is then not reduced, the motor
switches off after a few seconds. After switching the machine off and on again, the motor start again softly.
Before switching the machine on again, ensure that the drill bit can be turned easily and is not jammed in the drill
hole.
The motor electronic can temporarily be used on 260 Volt (resp. 140 Volt on 110 Volt machines). Higher voltages
however can cause irreparable damages. Please note that when operating the machine via a generator, this does
not generate higher voltage peaks.
4.5 Gear change
The DKS32/DKS32S has a 3-speed gear.
Never use force to switch over, and only switch over when the machine is decelerating or has stopped. Always select
the appropriate speed for the drill diameter (see table and rating plate on the machine).
4.6

Friction clutch

The integrated friction clutch protects operating personnel, the machine and the tool against high mechanical over-
loads.
Please ensure that the release time of the clutch is not more than 3 - 4 seconds, because otherwise wear and
heat will increase rapidly.
5 P U T T I N G I N T O O P E R A T I O N
5.1 Diamond drill bit
The tool fixture of the DKS32/DKS32S consists of a thread 1 ¼" UNC. Only use suitable high quality diamond tools.
Use suitable dry drill bits for dry drilling with soft impact.
Use sharp tools and ensure that the diamond segments are sufficiently larger than the inner and outer diameter of
the drill bit tube.
Apply water-resistant grease to the tool thread so that the tool can be easily loosened.
Ensure that the radial run out at the diamond segments of the drill bit is no greater than 1 mm (eccentricity).
Use force as required. If you do not, the diamonds will tend to "polish". In this case the rate of advance will fall
constantly until cutting finally stops.
Sometimes the segments can be resharpened again by using an SiC grindstone.
Take care that the drill bit does not vibrate, otherwise the diamonds can be tugged out their bond.
When drilling through iron reinforcements, use a greater initial pressure and the next lower gear.
If the drill blocks, do not try to loosen it by switching the machine on and off. Switch the machine off immediately and
try to loosen the drill bit by turning right and left using a suitable wrench. Carefully remove the machine from the
borehole.
Only use suitable wrenches for changing the core bit. Thereby hold the drilling spindle with another wrench.
Never use a hammer or something similar to open the core bit. If necessary elongate the wrench.
6 m³/h
80 % (−800 mbar)
15