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Through-hole
NOTE
Risk of deformation or fracture!
Do not hit the diamond drill bit with hard objects!
If the drill core is stuck in the diamond core drill bit,
knock the diamond core drill bit with a soft piece of
wood or plastic to loosen the drill core.
Non through-hole (blind hole)
NOTE
The diamond core drill bit can be damaged
irreparably if it is jammed in the core drill hole.
Never use the diamond core drill bit to break out
the drill core!
•
15
If the drill core is still stuck in the drill
hole after the diamond core drill bit has been
removed, it can be broken out using a suitable
tool (e.g. chisel).
7
Cleaning
DANGER
Risk of injury due to electric shock.
Î Disconnect the mains plug before carrying out
any work on the wet diamond drill.
The machine must be cleaned after each drilling
work session.
•
If necessary, remove the wet diamond drill from
the drill stand.
•
Carefully clean the machine and blow out with
compressed air.
•
Lightly grease the thread of the wet core drill bit
holder.
•
If used, clean the centring suction plate under
running water
•
If used, carefully clean the drill stand and blow
out with compressed air.
f Lightly grease the spindle head guide.
•
Ensure handles are dry and free from grease.
| 46 |
8
Maintenance
DANGER
Risk of injury due to electric shock.
Î Disconnect the mains plug before carrying out
any work on the wet diamond drill.
The wet diamond drill must be serviced at least
once a year. Further, servicing will be necessary
depending on the wear of the carbon brushes.
NOTE
BDB 8131
If using new carbon brushes, the machine may
not be overloaded during the first 15 minutes of
operation.
BDB 817
When using new carbon brushes, the machine may
only be operated within the green range for the first
15 minutes - observe LED display in the handle
(Item 1 and 2, see Figure
Only servicing and repair firms authorised by
Maschinenfabrik OTTO BAIER GmbH may carry out
maintenance of the machine. Ensure that original
BAIER spare parts and original BAIER accessories
only are used (see BAIER catalogue).
9
Handling wet diamond core
drill bits
•
Always use and store wet diamond core drill
bits in accordance with the manufacturer's
instructions.
•
Too soft diamond segments:
f Wet diamond core drill bits wear too quickly
at very high removal rate.
Remedy: The material to be machined
requires wet diamond core drill bits with a
harder bond.
•
Too hard diamond segments:
f The diamond grains become blunt and do
not break out of the bond. The wet diamond
core drill bits no longer have any cutting
power.
Remedy: The material to be machined
requires wet diamond core drill bits with a
softer bond.
•
If water flushing is not used during machining,
the wet diamond core drill bit increasingly
rubs against "soft" drill dust. The core drill bit
segments heat as a result, they become soft and
1
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