Weka DK 62 HS Instrucciones De Servicio página 15

quality diamond tools.
Only use appropriate diamond 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 on the diamond segments of the drill bit is no greater than 1 mm
(eccentricity).
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.
5.2 Drilling
Since the rig is not included in the delivery, only a few important features are noted here.
Please pay attention to the operating instructions for the rig.
Fixing methods
Dowel fixing, bracing.
The most common method of fixing is dowel fixing. Use only metal dowels.
It is also possible to fasten the drill stand with a suitable quick shift column against a rigid wall.
Appropriate columns are offered by the diamond tool market.
With the DK42B/52 you can also drill overhead without any further precautions. For protecting the
operator against water, you should however on principal use a water collecting ring (accessory for drill
rig). Consider that the drilled core slips into the core bit and thus loads machine and drill rig additionally.
Bigger cores have to be secured accordingly.
Set the volume of water at the ball valve (1a) such that the carried off material is completely flushed from
the drill hole.
Mud forms round the drill hole points to the use off too less water.
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 it finally stops.
In this case the segments have to be "sharpened" again by means of a SiC-grindstone.
Take care that the drill bit does not vibrate, otherwise the diamonds are detached by force.
When drilling through reinforcements, you might have to use 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 loosen the drill bit by turning right and left using a suitable wrench. Carefully remove the
machine from the borehole.
Take care not to cut a water-pipe or even an electric mains. In case of doubt use a line detector
for searching the drilling area.,
6. M A I N T E N A N C E
ATTENTION: Before beginning maintenance or repair remove the mains plug from the
supply socket.
Clean the machine once the drilling work has been completed. Also clean and grease the drill bit-holding
thread.
Clean the machine with a dry or moist cleaning-rag and not with a jet of water. Make sure that no water
gets into the machine or the switch box. Ensure that the ventilation slots are always clean.
Damaged cords and plugs have to be repaired or exchanged exclusively in an authorized repair station
(www.weka-elektrowerkzeuge.de).
6.1 Oil bath gear
The gear oil should be changed after the first 100 hours of operation. Ensure that this work is carried out
in a specialist workshop, or demand on the appropriate technical documents for this work.
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