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14
Once the hole is accomplished, toggle the spoke handles into the manual feed mode
(Figure
8a).
Then,
retract
the
cutter
from
the
workpiece
and
stop
the
motor
using the red
MOTOR button. To move the machine to another drilling spot, first disable the
electromagnetic base by toggling the MAGNET switch to position
‘O’
.
Once the work is finished, unplug the machine from the power outlet, clean chips and
coolant remainder from the machine and cutter, and remove the machine from the
worksite.
Tighten the cap of the cooling system bottle, close the valve, and press the pilot pin to expel
the coolant remaining within the system. Before inserting the drilling machine into
the
toolbox,
disassemble the cooling system bottle and remove the cutter from the arbor using
protective gloves.
3.6.
Replacing the motor brushes
Check the condition of the carbon brushes every 100 operational hours. If the length of the
brushes is less than
5
mm
(0.2’’),
replace
them
with
new ones.
To do this,
unplug
the
power
cord
from
the
power
outlet,
and
unscrew
four mounting screws (
1
, Figure 9) to remove the
motor cover (
2
).
Then,
unscrew the pressing plate
3
,
remove the brush holder
(
4
)
and the
brush (
5
). Proceed as described also for the second brush located at the opposite side of the
motor. To mount brushes, proceed in reverse order. After the replacement, run the motor
without load for 20 minutes.
When the cutter goes through the material, the slug core is
expelled from the tool with a significant force.
