Maintenance - Ferm HDM1017 Originalbetriebsanleitung

Hammer drilling in concrete or brick
Caution: Stone drills can get very hot.
It may be necessary to drill with smaller bits and
re-drill to nominal size so that later the plug is
firmly seated.
For large bores, for instance in very hard
concrete, use a smaller bit for pilot drilling and
re-drill to nominal size.
Do not apply a lot of pressure on the machine, let
the machine do the work, guiding the machine
with light pressure is sufficient.
Hold the machine with the auxiliary handle, the bit
can jam, particularly with deep bores, and the
machine will turn.
Chipping in concrete and brick
You can also use the machine for chipping.
Prior to starting work ensure that the front selec-
tion switch and handle selection switch are fully
engaged. Do not operate the hammer drill with
selection switches in mid position. Only change
the function when the motor has come to a
standstill.
Here as well: Do not apply a lot of pressure on
the machine, let the machine do the work, guiding
the machine with light pressure is sufficient.

4. MAInTEnAnCE

Take care that the machine is not
connected to power whenever
maintenance work on the mechanical
parts is taking place.
These machines are designed to function
problem-free for a long period with a minimum of
maintenance. Through regular cleaning and
correct treatment, you help assure a long working
life for your machine.
Defects
The machine should be regularly inspected for
the following possible defects, and repaired if
necessary.
• Damage to power cord
• Broken on/off trigger assembly.
• Short circuiting.
• Damaged moving parts.
Trouble shooting
1. When switched on, the motor does not turn
• Failure in power supply.
• Check the power supply.
• Poor contact in the on/off trigger.
• Repair or replace the trigger assembly.
• Mains voltage too low.
• Extension lead too long, or too light.
• Damaged motor.
• Have your machine repaired by an expert.
• Carbon brushes worn.
• Replace the carbon brushes.
2. Motor generates excessive noise, and runs
too slowly or not at all
• Motor is overloaded due to excessive pressure
or drilling depth.
• Reduce the pressure or drilling depth,
reduce power.
• Damaged motor.
• Have your machine repaired by an expert.
• Supply voltage too low.
• Adjust the supply voltage.
• Carbon brushes worn.
• Replace the carbon brushes.
3. Overheating in the transmission case
• Overloading of machine, or blunt drill bit
• Reduce the loading, or hone the drill bit.
• Reduced voltage.
• Adjust the supply voltage.
4. Heavy sparking from the motor
• Inspect the carbon brushes for wear.
Cleaning
Clean the machine casings regularly with a soft
cloth, preferably after each use. Make sure that
the ventilation openings are free of dust and dirt.
Remove very persistent dirt using a soft cloth
moistened with soapsuds. Do not use any
solvents such as gasoline, alcohol, ammonia, etc.
Chemicals such as these will damage the
synthetic components.
Faults
Should a fault occur, e.g. after wear of a part,
please contact the service address on the
warranty card. Separate you find an exploded
view showing the parts that can be ordered.
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