Maintenance And Inspection - ALFRA ROTABEST RB 50 SP Mode D'emploi

Surface quality
If a kind of "air gap" is produced between the magnet and the work piece, this reduces the holding force. In the
same way, paint, rust, scale, surface coatings, grease or similar substances all form an air gap between the work
piece and the switchable magnet, reducing the holding force.
Temperature
The high-power permanent magnets installed in the magnet irreversibly lose their magnetic properties from a
temperature of more than 80°C, so that the full holding force is never reached again even after the magnets have
cooled down.

Maintenance and Inspection

The user is obliged to maintain and service the core drilling machine in compliance with the specifications in the
operation manual and according to the country-specific standards and regulations.
The maintenance intervals are classified according to the frequency with which the maintenance should be carried
out.
Always disconnect the machine from the mains before any maintenance operation, otherwise
there is a risk of injury due to unintentional machine switch-on.
Before every use...
•
inspect the core drilling machine and underside of the magnet for visible signs of damage
•
clean the surface of the work piece and the underside of the magnet
•
check the blocking function of the safety tab on the lever
•
check the correct, firm fit of the core drill
•
check connection cables for damage
Weekly...
•
check that the operating lever and safety tab are working properly
•
use dry compressed air to blow the motor compartment out from the outside
•
check the underside of the magnet for scratches, pressure points or cracks. Have the magnet repaired by
the manufacturer if necessary
•
in particular, consider the motor LED and change the carbon brushes if necessary
Monthly...
•
check the markings and labelling on the core drilling machine for legibility and damage. Replace them if
necessary
•
clean all the sliding surfaces regularly, re-lubricate them and set the pre-tension of the slide
Annually...
•
replace the gear oil or gear grease
Maintenance, testing and repair work may only be carried out by qualified electricians according to the regulations
valid in the respective country.
Only use genuine ALFRA spare parts.
An overview of spare parts can be found at the end of this operation manual.
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