Metabo BS 175 Original Instructions Manual page 12

en ENGLISH
is suitable for double-wheeled bench grinders. Inner
diameter of extraction connection piece: 35 mm.
Before switching on the machine, ensure that the
extraction device is connected and being used
correctly.
6.6 Test run
Check the grinding wheels before initial use.
Test run
A test run of approx. 5 min without load must
be carried out before initial use. All persons must
stay clear of the danger zone when this is
performed.
.
7. Use
7.1 Adjusting the workpiece support
Adjust the workpiece supports (8) frequently to
compensate for wear of the grinding wheels (4).
The distance between the workpiece support and
grinding material must be as small as possible and
never greater than 2 mm (see illustration C, page 2).
If the grinding wheel is so badly worn that the
maximum distance of 2 mm can no longer be
maintained, the grinding wheel must be replaced.
7.2 Adjusting the spark deflector
Adjust the spark deflectors (10) regularly to
compensate for wear on the grinding wheels (4).
Release the 2 screws on the spark deflector and
shift the spark deflector.
The distance between the spark deflector and
grinding wheel must be as small as possible and
never greater than 2 mm (see illustration C, page 2).
If the grinding wheel is so badly worn that the
maximum distance of 2 mm can no longer be
maintained, the grinding wheel must be replaced.
7.3 Switching On and Off
Press the switch (11) (see illustrations D, page 2).
I = Switch on
0 = Switch off
DS 125, DS 150: Avoid inadvertent starts: always
switch the grinder off when the plug is removed from
the mains socket or if there has been a power cut.
Restart protection (not in DS 125, DS 150):
When power is restored after a power failure, the
machine - which is still switched on - will not start
automatically for safety reasons. Switch machine
on and off again.
7.4 Dry grinding, belt sanding
- Stand in front of the grinder.
- Holding the workpiece with both hands, place the
workpiece on the workpiece supports (8) and
gently press it against the dry grinding wheel/
sanding belt. For optimum grinding/sanding
results, move the workpiece gently to and fro. This
also helps to distribute wear evenly on the
grinding material.
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7.5 Wet grinding (TNS 175 only)
Only use the wet grinding wheel for grinding
when there is water in the water container.
(18). Roughly 1/3 of the wet grinding wheel should
be immersed in water. grinding results may
impaired if the water level is either too low or too
high.
- Stand to the left of the grinder, in front of the wet
grinding wheel.
- Holding the workpiece with both hands, lower it
onto the wet grinding wheel. You can also support
the workpiece on the levels on the water container
(18) and then lower the workpiece onto the wet
grinding wheel.
7.6 Adjusting the belt run (BS 175 only)
Unplug. Rotate the sanding belt manually. Use
the rotary knob (14) to adjust the sanding belt
so that it runs centrally on the sanding belt roller.
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8. Maintenance, cleaning
Clean, check and perform maintenance work on the
machine and guard devices regularly. Regularly
clean the inside of the grinding wheels and belt
grinder housing. The grinding wheels and sanding
belt must be able to rotate freely within the housing.
Disconnect the mains plug before starting any
setting, cleaning, maintenance or repair work.
8.1 Grinding wheel change
Use only original Metabo grinding wheels.
The permissible rotational speed specified on
the grinding wheel must be equal to or greater
than the maximum idling speed specified on the
identification plate of the machine.
Grinding wheel check:
suspend the grinding wheel on a thread.
Knock lightly with a piece of hard wood. You will
hear a clear tone if the grinding wheel is in perfect
condition. If you hear a clattering, dull or hollow
sound, the grinding wheel is damaged.
Do not use damaged grinding wheels.
Test run
A test run of approx. 5 min without load must
be carried out after the grinding wheel has been
changed. All persons must stay clear of the danger
zone when this is performed.
Dry grinding wheel:
- Release the screws on the safety guard cover (1),
twist and remove the cover (1) (bayonet catch).