Ferm BGM1020 Traduction De La Notice Originale page 5

Assembly and adjustment of spark guard
bracket and spark guard
Fig. B
The spark guard bracket and spark guard
should only ever be assembled/adjusted
with the grinding wheel stationary, and the
machine disconnected from the power
supply.
• Fix the spark guard bracket (4) with attached
spark guard to the grinding wheel cover, using
the screw provided (A).
• Set the spark guard bracket at the correct
height. The clearance (B) between the wheel
and the spark guard bracket should be 1 to
1.5 mm.
• Next tighten the screw (A) firmly.
• Position the spark guard to give maximum
protection when working.
• Always wear safety glasses.
Fitting and adjusting tool rest
The tool rest should only be adjusted when
the grinding wheel is completely stationary,
and the machine is disconnected from the
power supply (the wall socket).
• Fit the tool rest as shown in Fig. C.
• Fix it as tightly as possible in position, with a
maximum clearance (C) of 1 to 1.5 mm
between the tool rest and the grinding wheel.
Replacing the grinding wheel
Fig. C
Required tools:
• 19 mm spanner
• 8 mm spanner
• Screwdriver
Only ever replace the grinding wheel
when the motor is at a standstill and the
power is completely disconnected.
• Remove the grinding wheel guards using the
tools listed above. The spindle nut on the
right-hand side has a right-handed thread.
The spindle nut on the left-hand side has a
left-handed thread. Keep this in mind when
you are replacing the grinding wheels.
• Loosen the nut using the correct spanner.
Remove the old wheel from the spindle.
• Clean the flanges. Place one flange (A) back
on the spindle, with the hollow side facing the
grinding wheel. Slide the new wheel onto the
spindle. Place the second flange (A) on the
spindle, again with the hollow side facing the
grinding wheel. Now tighten the nut on the
spindle. Do not overtighten! Now refit the
grinding wheel cover, and again adjust the
tool rest correctly. Run the motor briefly,
without grinding.
4. Operation
Selecting the grinding wheel
Coarse grinding wheels will in general remove
the most material, and fine grinding wheels
are used for finishing. If the surface is uneven,
begin by using a coarse grinding wheel, and
grind the workpiece until it is smooth. Next use
a fine grinding wheel to remove the grooves and
scratching left by the coarse wheel, and finish off
the workpiece.
How to grind
To prevent the grinding surface from blocking up,
avoid holding wood, lead or any other soft material
or metal against the grinding wheel. To avoid
creating grooves, do not press the workpiece
too firmly on the grinding wheel. Use water to
regularly cool the workpiece being ground. Wood
chisels and the like should never be sharpened
'blue'. Take care not to lose your grip on the
object being ground, as it may suddenly become
jammed between the tool rest and the grinding
wheel. This can cause the stone to shatter, the
motor to seize, or the workpiece to fly off, all of
which can cause injury and damage. Whenever
the machine has been in use for 30 minutes, it
should be switched off. Allow the machine to cool
down to room temperature.
• Switching the machine on
• Check that the switch is in the "OFF/0"
position before connecting the machine to the
power supply.
• Press the power switch into the " ON/1"
position to start your bench grinder.
• Always keep the power cord out of the way of
the tool's moving parts.
5. Maintenance
Make sure that the machine is not live
when carrying out maintenance work on
the motor.
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