EIBENSTOCK EBM 250/2 RP Original Instructions Manual page 11

Close the water supply.

Removal of the core when it sticks in the drill bit:
Separate the drill bit from the motor.

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.
Care and Maintenance
Before the beginning of the maintenance or repair works you
have to disconnect the plug from the mains!
Repairs may be executed only by appropriately qualified and experienced
personnel. After every repair the machine has to be inspected by an electric
specialist. Due to its design, the machine needs a minimum of care and
maintenance. Regularly the following works have to be carried out or rather
the component parts have to be inspected.
Clean the drilling unit after having finished drilling. Later on, you have

to grease the spindle thread. The ventilation slots always have to be
clean and open. Pay attention that no water gets inside the core drill
during the cleaning process.
After the first 150 hours of operation you have to replace the gearbox

oil. Gearbox oil changes bring about an essential increase of the
tool's lifetime.
After approximately 250 hours of operation the carbon brushes have

to be checked by a specialist and if necessary removed (only use
original carbon brushes).
Have switch, cable and plug checked by an electric specialist

quarterly.
Our after-sales service responds to your questions concerning maintenance
and repair of your product as well as spare parts.
EIBENSTOCK's application service team will gladly answer questions
concerning our products and their accessories.
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