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When the cutter goes through the material, the slug core is
expelled from the tool with a significant force.
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.
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