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Ferm HDM1020 Manual

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Lubrication
Fig. 5
The machine will be damaged easily,
when the grease level is not sufficient
enough!
Above this lubricate the tool every time the carbon
brushes are replaced.
• Check the oil level of the demolition hammer.
When putting the machine in vertical position
(see Fig. 2), the oil level should be till the red
dot indicated on the oil level indicator.
• To fill the oil reservoir, the oil level indicator can
be removed with help of the wrench supplied.
• Fill the reservoir with the oil supplied
(Multigrade oil SAE 15W40).
ON/OFF switch
Fig. 4
• Press the trigger switch (2) to start the
machine.
• Release the trigger switch to stop the machine.
Changing the carbon brush
Take care that the machine is not
connected to the mains whenever
maintenance work is taking place.
• Remove the cover of the carbon brush with
help of a crosshead screwdriver
• Remove the next cover with help of a flat
screwdriver
• Remove the carbon brush and replace it by a
new one (on both sides)
5. MAINTENANCE
Take care that the machine is not connected
to power whenever maintenance work on
the mechanical parts is taking place.
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,
… 6 …


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