7
Original instructions
EN
control over torque reaction or kickback upon
starting.
SWITCHING ON / SWITCHING OFF
The concrete grinder is secured against uninten-
tional switching on.
- Switching on: first press the auxiliary button 8
positioned on the upper side of the handle and
then press the ON/OFF switch 7. For continuous
operation switch 7 can be locked. In this case
while holding switch 7, press button 8 and then
release switch 7.
- Switching off: release switch 7; in case the
switch is locked, first press and then release
that switch.
WHEEL GUARD
The wheel guard 2 must always be mounted on
the machine!
WHEEL REPLACEMENT
Secure spindle 1 by pressing the spindle lock
button 9 on the gear case.
WARNING:
Never press button 9
while the spindle is still rotating!
With this button depressed turn the spindle in
direction opposite to that shown on the wheel
guard 2, till its pronounced going deeper. Un
-
screw fixing flange 5 by a lock nut wrench. Place
the new wheel on the support flange 3 and screw
down the fixing flange 5 with its flat side facing
the wheel using the lock nut wrench. After re-
placing the wheel, operate the machine with the
new wheel in no load mode for one minute. Vi-
brating or otherwise improperly rotating wheels
must be repla ced immediately and discarded.
When replacing the wheel, change the rubber
seal as well.
REPLACING THE RUBBER SEAL
The rubber seal 10 provides for decreasing
to the utmost of the dust emitted in the envi-
ronment. It wears out along with the wheel.
When replacing the wheel, change the rubber
seal as well. Loosen the screw in bracket 11
and remove the old rubber seal. Place the new
seal, taking care the edge of the wheel guard 2
will enter the provided in the seal groove. Place
back bracket 11 and fasten it.
AUxILIARY HANDLE
The auxiliary handle 6 is fastened to the gear
case by two screws. Always use the auxiliary
handle and hold the machine firmly with both
hands.
DUST ExTRACTION
The machine can be operated only with dust ex-
traction. Wear dust-proof mask. We re commend
the use of a vacuum cleaner for industrial pur-
poses, with specifications: minimum airflow rate
60 l/s and minimum created subpressure (vacu-
um) 180 mbar. Connect the vacuum cleaner to
the dust extraction tube of the wheel guard.
RECOMMENDATIONS
When grinding do not apply pressure to the
processed surface but move the wheel smoothly.
Use the appropriate type of wheel for the specific
operation and the material.
ACCESSORIES TO BE USED WITH
THIS POWER TOOL
Diamond cup wheel Ø152 mm (6’’)
▪
VII - Maintenance
WARNING:
Always ensure that
the tool is switched off and unplugged
before attempting to perform inspection or
maintenance.
BRUSH REPLACEMENT
This power tool is equipped with auto-stop
brushes. When the carbon brushes are worn
out, the machine switches itself off. In this case
both brushes must be replaced simultaneously
with genuine brushes at SPARKY service centre
for warranty and post-warranty service.
GENERAL INSPECTION
Regularly inspect all fasteners and ensure they
are properly tightened. Should any of the screws
be loose, retighten it immediately to avoid haz-
ards.
Re-lubricate all moving parts at regular inter-
vals.
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