EIBENSTOCK EBM 352/3 Notice Originale page 27

Safety Clutch
The safety 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 it in good condition, the clutch should slip for a
very short time (max. 2 seconds) in each case only. Slipping for
longer periods destroys the safety clutch. After excessive wearing the
clutch has to be renewed by an authorized service shop.
Fracture of Segments
If a diamond segment, parts of the reinforcement or something similar
breaks out, and consequently the drill bit seizes, stop working on this bore
and drill a hole with the same centre and a diameter being 15 – 20 mm
bigger.
Do not try to finish your work using another drill bit of the same
diameter!
After Drilling
When you have finished drilling:
Pull the drill bit out of the hole.
Stop the motor by using the motor switch and not the PRCD switch.
Close the water supply.
Removal of the core when it sticks in the drill bit:
Separate the drill bit from the motor (if possible).
Put the drill bit in a vertical position.
Knock carefully on the pipe by using a wooden hammer shank till the
drilling core slips out. Never throw the drill bit against a wall by force
or set about it with tools, such as hammer or jaw wrench. Otherwise,
the pipe could go out of shape and neither the core can be removed
nor the drill bit reused.
Removal of the core from blind holes:
Break off the core with a cotter or lever, or in pieces. Lift the core out with
appropriate tongs or drill a hole in the core, screw an eyebolt in and pull
the core out.
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