Switch Lock; Trigger Switch - Ferm DHM-1800 Gebrauchsanweisung

GB
• 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.

Switch lock

Push the switch lock (1) after pressing the
trigger switch (2) for continuous running.
To stop the tool from the locked position, press
the trigger switch completely and then release
it.
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.
6
HDM1018 Ma # 0809-03.1 FC.indd 6
Trouble shooting
1. When switched on, the motor does not
turn.
• Failure in power supply.
• Checkthepowersupply.
• Poor contact in the on/off trigger.
• Repairorreplacethetriggerassembly.
• Mains voltage too low.
• Extensionleadtoolong,ortoolight.
• Damaged motor.
• Haveyourmachinerepairedbyan
expert.
• Carbon brushes worn.
• Replacethecarbonbrushes.
2. Motor generates excessive noise, and
runs too slowly or not at all.
• Motor is overloaded due to excessive
pressure or drilling depth.
• Reducethepressureordrillingdepth,
reduce power.
• Damaged motor.
• Haveyourmachinerepairedbyan
expert.
• Supply voltage too low.
• Adjustthesupplyvoltage.
• Carbon brushes worn.
• Replacethecarbonbrushes
3. Overheating in the transmission case.
• Overloading of machine, or blunt drill bit
• Reducetheloading,orhonethedrillbit.
• Reduced voltage.
• Adjustthesupplyvoltage.
4. Heavy sparking from the motor.
• Inspectthecarbonbrushesforwear.
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.
Ferm
9/3/08 11:08:25 AM