SPARKY HD Professional FB 514 Notice Originale page 8

This power tool is designed for rough and fine grinding
concrete and rock material with the purpose of refurbish-
ing before laying plaster and protective coating. The ma-
chine is designed for dry grinding only.
PRIOR TO INITIAL OPERATION
▪ Make sure the power supply voltage corresponds to
the value indicated on the name plate with technical
data of the tool.
▪ Always check the position of ON/OFF switch. The
power tool must be connected to the power supply
socket only when this switch is in OFF position.
▪ Make sure that the cord and the plug are in order. 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.
WARNING: Always switch off and unplug the
power tool prior to any adjustment, servicing or main-
tenance.
▪ Always use the auxiliary handle and hold the machine
firmly with both hands for maximum control over
torque reaction or kickback upon starting. (Fig. 1)
SWITCHING ON - SWITCHING OFF
Before plugging in the tool, always check to see that the
switch trigger actuates properly and returns to the "OFF"
position when released.
1. To switch on: Push the slider of the switch slider (7)
forward until its front end sags thus fixing itself. (Fig. 2)
2. To switch off: Press the back lifted end of the switch
slider (7) and release it in order to move back in its
initial position. (Fig. 3)
ELECTRONIC DEVICE
This power tool is equipped with an electronic device
featuring:
▪ Safety upon mains drop-out: In case of mains drop-
out (or temporary drop-out for time t > 0,5 s), when the
ON/OFF switch is in ON position, the machine should
not operate after supply recovering. To start operating
the machine, first switch off and then switch on the
lever of ON/OFF switch.
▪ Soft start and overload protection: This feature en-
sures starting without jerks and prevents origination
of supply voltage fluctuations;
▪ Virtually constant speed under wide range of loads;
▪ Brief overload protection: Upon major brief overloads
a current overload protection actuates, which reduces
harshly the rotation speed. To resume normal opera-
tion withdraw the machine from the material.
▪ Thermal overload protection: Upon minor long over-
loads, the thermal overload protection actuates. The
electronic device switches the machine off before the
temperature reaches critical value and the machine
switches from operating to safety mode with lower
motor speed. The normal operation is disabled. In
safety mode the motor rotates with lower speed to
facilitate cooling, but the machine is DISABLED. After
cooling down for 3-5 minutes the machine can be op-
erated again. To resume operation switch the trigger
off and on again.
6
EN
WHEEL GUARD
The wheel guard (2) must always be mounted on the
machine!
ASSEMBLY, REPLACING AND ADJUSTING
THE CUP WHEEL POSITION
Make sure the cup wheel diameter and thickness do not
exceed the values stated in the technical specifications.
The maximum admissible speed indicated on the wheel
must not be less than the machine no load speed.
Fix the spindle (1) by pressing the lock button (8) on the
gear case.
WARNING: Never press button (8) while the
spindle is still rotating!
With this button depressed turn the spindle till its pro-
nounced going deeper. Unscrew lock nut (6) by the lock
nut wrench (12).
In view of the cup wheel wear and in order to achieve
optimum dust extraction a possibility is provided to adjust
the cup wheel position to the wear of the cup wheel.
When placing a new cup wheel arrange the components
on the spindle in the following order: base support wash-
er (3); cup wheel (4); lock nut (6) with its flat end towards
the cup wheel as shown on Fig. 4.
WARNING: Placing the lock nut (6) with its
convex end towards the cup wheel shall make tighten-
ing the cup wheel impossible.
In case the cup wheel is half worn out or more, arrange
the components on the spindle in the following order: flat
support washer (5); cup wheel (4); lock nut (6) with its
convex end towards the cup wheel as shown on Fig. 5.
WARNING: Placing the lock nut with its flat
end towards the cup wheel shall obstruct centring the
cup wheel thus causing excessive vibration and may
result in personal injury.
WARNING: After replacing the wheel, operate
the machine with the new wheel at no load mode for
minimum 30 seconds. Vibrating or otherwise improp-
erly rotating wheels must be replaced immediately and
discarded.
In case of changing the cup wheel position adjust it or
replace the brush shield if necessary.
ADJUSTING (REPLACING) THE BRUSH
SHIELD POSITION
The brush shield (9) ensures decreasing the dust emis-
sion in the environment to the utmost. The brush shield
wears out along with the wheel. When replacing the
wheel if necessary change the brush as well. Loosen the
FB 514