Superabrasive Owner’s Manual orginal language –
Lavina 20®N Pro/20®NHV Pro
2/2012
7
4. OPERATION
PRELIMINARY CONTROLS
Inspect the working area as explained in the safety instructions. For wet use, fill in the water tank when the electrical
cable is disconnected. Connect the vacuum extractor and ensure that the vacuum hose is clear and it will follow the
machine easily. Plug in the machine and make sure that the power cord is free to follow the working direction of the
Lavina 20®N Pro/20®NHV Pro.
ADJUSTING AND MOUNTING TOOLS
Mount the tools only after ensuring that there is
enough diamond bond material left. Be sure
that the plates are always clean before
mounting. Always use the tool holder key
(Fig.4.1)
Diamond tools with Velcro are attached on
three foam plates of 9 inch. The foam plates
(Fig. 4.2) are mounted the same way as the
other tools.
THE CONTROL BOARD
1. Digital RPM indicator
indicates the revolution per minute of the
grinding plates (not the revolution per
minute of the entire unit).
2. Inverter alarm led
lights blue when the inverter goes into
alarm mode.
3. Forward/Reverse
switch
choose forward for clockwise rotation of
the grinding plates or reverse for anti-
clockwise rotation of the grinding plates
4. Power
led
lights green when the power is on
5. Emergency
button
used in Emergency situations for stopping the motor
6. ON
button
starts
the
motor
7. OFF
button
stops
the
motor
8. Reset
button
resets the alarm of the inverter
9. Potentiometer
changes the RPM of the grinding plates from 300-1100 rpm
STARTING THE MACHINE
First, follow the directions in chapter Safety Devices and Safety Instructions. Next, pull the emergency stop (5) to
ensure that the machine is in working condition. Check the potentiometer (9) and ensure that it is set at the working
speed. If working wet, add water to the floor surface. If working dry, omit this step, and instead, switch on the vacuum
unit. Finally, hold the machine firmly and push the start button (6).
OPERATING THE MACHINE
Guide the machine in straight lines across the floor, and with each new line overlap a little bit of the previously
completed surface. Work at a constant speed allowing the tools time to work at a speed appropriate for the tools’ grit
size. Avoid vibrations. Do not stop the Lavina 20®N Pro/20®NHV Pro machine in one spot while the tools are still
working because they will leave marks on the floor surface. When working wet, open the water tank periodically to
release water onto the floor surface. When working dry, check the floor surface periodically to ensure that dust is not
accumulating on the surface, also check regularly if your vacuum works properly.
STOPPING THE MACHINE
The stopping of the machine must be done gradually until the motor stops. Do not stop moving the machine before
arresting the motor as the tools could damage the surface. To stop push the off button (7). Use the Emergency button
(5) only in emergency or use it to switch the power totally off.
Remember not to hold the machine in one spot before turning off the motor.
ALARM
The Alarm light (2) will light incase inverter goes in alarm mode. The most common failure is motor in overload. To reset
the mode push reset button (8).
Figure 4.1
Figure 4.2
Figure 4.3
