KB 200
Bedienungsanleitung / Operating instructions / Mode d’emploi
- 23-
02952000996
5005984-01
7. Troubleshooting
Blunt drill bit
Cause Remedy
Hard bonded segment!
Use segments one class softer bonded
Segment too big surface
Attach a drill bit with less segments or reduce the
rpm an increase the feed compression.
Too fast RPM!
Use lower gear.
Drilling in steel!
Use lower gear and reduce feed and increase
water flow.
Drill bit worn out!
Replace with a new one.
Diamont grains pressed into the binding!
Sharpen drill bit in sharpening plate, work with low
feed.
Segment surface is daubed with material
sludge
Increase the water flow, resharp the segments
Segment surface is daubed with steel chips
Reduce the speed, increase the water flow,
resharp the segments
No free cut because of side wards wear-out of
segments!
Replace the drill bit and have the drill motor
spindle checked.
Excessive wear of segments
Soft bonded segments!
Use segments one class harder bonded or
increase rpm and reduce the feed compression
Segments to narrow!
Use drill bit with wider segments or reduce feed.
Too low RPM!
Shift the higher gear.
Drill bit is deformed!
Change drill bit for a new one and bring worn drill
bit for rebalancing. Check drill stem and adjust or
replace it. Do not use deformed drill bits - it is also
wearing out the drill motor.
Drill bit out of true!
Change drill bit and bring worn drill bit for re-
balancing.
Abrasive material!
Use segments one class harder bonded. Increase
the water flow and the speed.
Poor water flow!
Increase the water flow in order to remove
abrasive slurry around segments.
Drill bit is stuck
Loose material (cut steel or aggregate is
blocking the drill bit or between drill hole and
drill bit!
Apply wrench and rotate drill bit in both directions
while drill bit is under tension. Disconnect drill bit
from the drill motor and drill over with a larger
sized drill bit.
Drill rig was displaced during drilling (loose
fastening)!
Disconnect drill bit and remove. Break and pull the
core. Start again with improved fastening of the
drill rig. If drill hole is misaligned, drill over with a
larger sized drill bit.
Misaligned drill hole guidance of drill rig has
too much clearance!
Disconnect the drill rig, adjust guidance. Start with
a new hole or wash over. Do not enter the old drill
hole.
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