Bedienungsanleitung Ferm hdm 1017 (Seite 7 von 124) (Deutsch, Englisch, Holländisch, Französisch, Italienisch)

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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

rmly 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 sufcient.

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 sufcient.

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 nd an exploded

view showing the parts that can be ordered.

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