Maintenance - SPARKY MBG 125L Notice Originale

tap it gently with a light non-metallic object (for exam-
ple with a screwdriver handle or a mallet) (Fig.3). The
sound emitted by the wheel should be clear and ring-
ing. A damaged wheel will respond with a dull thud; in
this case the wheel has inner cracks and defects and
must be discarded.
NOTE: The wheel you intend to test must be dry. Damp
wheels emit a dull thud.
WARNING: Never use damaged wheels!
2. Remove the wheel guard (11).
3. Holding the wheel (5) firmly with one hand, remove
the nut and the outer flange from the spindle with a
spanner (Fig. 4). Please note that the left wheel nut is
left-treaded, and the right wheel nut is right-threaded.
4. Remove the old wheel and replace it with the new one.
5. Place back the flange and the nut. Do not over-tighten
the nut. Inspect the wheel visually for faults resulting
from tightening.
6. Re-install the wheel guard (11) and fasten it tightly.
7. Run the bench grinder for a couple of minutes at no
load to assure that the wheel rotates freely and is well
balanced.
MACHINED PIECE DIMENSIONS
The overall dimensions and weight of the machined
piece shall ensure easy machining without preliminary
fixing and should not hamper the operator's natural pos-
ture during work.
OPERATING THE BENCH GRINDER
▪ Do not overload the power tool. Excessive pressure
may result in motor overheating and untimely wheel
wear.
WARNING: Excessive pressure on a cold
wheel may cause the wheel to crack.
▪ Do not use this power tool for purposes it was not de-
signed for.
▪ Strictly observe the above mentioned instructions for
replacing the wheel.
▪ Remove all spanners and parts from the power tool
and in the near vicinity prior to beginning of operation.
▪ The eye shields position can be adjusted to ensure
proper view on the work area for the operator.
▪ Check and adjust if necessary the tool rests position
so that the distance between each one and the wheel
does not exceed 1.6 mm (Fig.5). Adjust regularly the
distance between the wheel and the tool rest as the
diameter of the wheel decreases with use. This will
ensure the proper angle for sharpening and hence -
high efficiency.
▪ When you switch the machine on let it operate at no
load until the motor gains full speed.
6
EN
WARNING: Never use accessories or at-
tachments differing from those recommended in this
manual.
WARNING: Never sharpen or grind parts
made of aluminium, brass, or copper.
▪ While grinding, rest the machined piece against the
wheel front surface, do not grind on the wheel flat
side. Overloading the wheel side surfaces is danger-
ous and must not be attempted.
SWITCHING ON - SWITCHING OFF
Switching on: Press the START button "I" of the switch
(9).
Switching off: Press the STOP button "O" of the switch
(9).
Upon switching the bench grinder on, the work area is
locally illuminated by LED light (1).
WARNING: Do not use optical instruments to
concentrate the light.
ACCESSORIES
Raw wheel - 1 pc., finishing wheel -1 pc.
WARNING: The bench grinder can be oper-
ated with other grit wheels with maximum allowable
wheel speed > 3000 min

Maintenance

WARNING: Always ensure that the tool is
switched off and unplugged before attempting to per-
form inspection or maintenance.
This power tool does not require any special mainte-
nance. If the bench grinder should happen to fail despite
the care taken, please notify the authorised service
centres for warranty and post-warranty servicing of
SPARKY power tools.
GENERAL INSPECTION
Regularly inspect all fasteners and ensure they are
properly tightened. Should any of the screws be loose,
retighten it immediately to avoid hazards.
If the replacement of the supply cord is necessary, this
has to be done by the manufacturer or his agent in order
to avoid a safety hazard.
MBG 125L • MBG 150L • MBG 175L • MBG 200L
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