11
7.0
Servicing and care
Warning
Disconnect the mains plug before commencing any servicing or repair work.
You must have the core drill checked by an electrician after every repair (statu-
tory regulation pursuant to VBG4 since 1.1.1990).
7.1
Daily care
Ensure that no water is emitted from the overflow hole. This will cause gear damage and may adversely
affect the electrical safety of the core drill. If water is emitted, see assistance from an authorised service
outlet.
Visual inspection for damage to the switch, connection lead or plug connector
After completing the drilling work clean the core drill. Grease the core bit mounting thread with silicon
grease. The ventilation slits must always be clean and open. Ensure that during the cleaning process, no
water gets into the core drill.
To maintain the seal, oil the drilling spindle as follows
-
Disconnect the core drill from the water supply. Open the water connector shut-off cock, add
several drops of oil, close the shut-off cock, add several drops of oil to the overflow hole and
turn the machine briefly by hand.
7.2
After approx. 150 hours of use
After the first 150 hours of use, the gearbox oil must be changed.
7.3
After approx. 250 hours of use
Have the carbon brushes checked, and replaced if necessary, by an electrician.
Avoid adjusting the carbon retaining springs.
Only use original spare parts.
7.4
Quarterly
Have the cable, switch and plug connectors inspected by a specialist (regulation pursuant to VBG4) and
document this inspection. Changing the gearbox oil will produce a considerably increase in the service life
of the gear.
