11.2 Cleaning
Do not use cleaning agents or solvents. Chemical sub-
stances could damage the plastic parts of the device.
Never clean the device under running water.
• Clean the device thoroughly after each use.
• Clean the ventilation holes and the surface of the
device with a soft brush or cloth.
• Remove swarf, dust and dirt with a vacuum cleaner
if necessary.
• Lubricate the moving parts regularly.
11.3 Maintenance
Brush inspection (fig. 10)
Check the carbon brushes after the first 50 operating
hours with a new machine, or when new brushes have
been fitted. After carrying out the first check, repeat
the check every 10 operating hours.
If the carbon is worn to a length of 6 mm, or if the
spring or contact wire are burned or damaged, it is
necessary to replace both brushes. If the brushes are
found to be usable following removal, it is possible to
reinstall them.
To service the carbon brushes, loosen the four Phillips
screws (M) on the access panel (as shown in Figure
10) counter-clockwise and lift off the access panel.
Then remove the carbon brushes.
Replace the carbon brushes in the reverse order.
11.4 Replacing the chuck (fig. 4/10)
m Warning! Pull out the mains plug!
Tools required (not included in the scope of delivery):
1x open-ended spanner 27 mm
• Remove the insertion tool as described in 9.3.2.
• Tighten the clamping sleeve (E) firmly, by turning
the chuck key clockwise.
• Hold the drill-chuck with one hand and turn the nut
(H) clockwise with the open-ended spanner (27
mm).
• As soon as you have loosened the drill-chuck from
the shaft, you can remove it.
• Fasten the new chuck in reverse order.
When replacing the chuck, use only chucks approved
by the manufacturer.
Order number: 390 6814 001
11.5 Service information
With this product, it is necessary to note that the follow-
ing parts are subject to natural or usage-related wear,
or that the following parts are required as consuma-
bles.
Wear parts*: Carbon brushes, drill bit
* may not be included in the scope of supply!
Spare parts and accessories can be obtained from our
service centre. To do this, scan the QR code on the
cover page.
12. Storage
Store the device and its accessories in a dark, dry and
frost-free place that is inaccessible to children. The op-
timum storage temperature lies between 5 and 30 °C.
Store the electric tool in its original packaging.
Cover the electrical tool in order to protect it from dust
and moisture.
Store the operating manual with the electrical tool.
13. Electrical connection
The electrical motor installed is connected and
ready for operation. The connection complies with
the applicable VDE and DIN provisions. The cus-
tomer's mains connection as well as the exten-
sion cable used must also comply with these reg-
ulations.
13.1 Important information
In the event of overloading, the motor will switch itself
off After a cool-down period (time varies) the motor
can be switched back on again.
13.2 Faulty power supply cables
The insulation on electrical connection cables is often
damaged.
This may have the following causes:
• Pressure points, where connection cables are
passed through windows or doors.
• Kinks where the connection cable has been improp-
erly fastened or routed.
• Places where the connection cables have been cut
due to being driven over.
• Insulation damage due to being ripped out of the
wall outlet.
• Cracks due to the insulation ageing.
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