21
CHECKING THE SAFETY SYSTEM
Every year a trained technician has to check the safety deviced of the machine. In
particular, the machine has to be completely overhauled every 5 years by a NOVA
technician.
CHECKING THE ELECTRIC SYSTEM
It is very important to check the electric system up every two years. Disconnected
cables or burnt cables must be immediately replaced.
Interventions on the electric system must be carried out by a trained technician.
Every kind of intervention not explained in the operator manual must be carried out
by NOVA s technicians.
CHECKING THE BRAKING SYSTEM
The braking system has to be checked every 3 months.
DIAGNOSTIC
The electronic card is equipped with a particular system which shows the machine
errors through quick flashings on the battery charger display placed on the dashboard.
The number of switched on LEDs represents one of the errors listed below:
n.° flash
Description
Solution
1
The gear command is already active on ignition: the ignition key has been
activated when the gear command was already plugged in.
It is required to release the gear command in order to
eliminate the flashing signals. Should this not happen,
it may be necessary to reset the acceleration system.
2
Battery too unloaded or subject to tension caused by a short circuit on the
power. Indicates that the tension of the system is lower than the minimum
level required for a proper functioning.
Verify that the battery is not too unloaded and if
necessary reload the battery. Alternatively verify
whether any electrical connections are loosened. If this
doesn’t solve the problem, it may be necessary to
replace the system.
3
Maximum tension on the battery. Indicates that the tension is too high and
could break the regulator.
4
Motor not connected or wrong contact on the motor circuit. This may
happen when the motor brushes do not correctly lie on the rotor or when
cables are loosened.
Verify the connections, the functionalities and the
integrity of the motor.
5
Internal fault of the regulator or earth on the motor.
There could be a negative dispersion on the motor
circuit; alternatively, verify the regulator.
6
7
Temperature of the power circuit is too high; this happens when the
temperature of the mosfet is higher than 75°C +/- 5°C, i.e. when the
machine has worked in overload conditions, e.g. on too steep slopes for too
long, or in working temperature higher than 40°C. This may also happen in
case of damage of the winding of the motor, which may lead to unusual
absorption of current.
Wait until the temperature has cooled down.
8
Motor is already working on start. Indicates that the machine is being starter
when it is (or its motor) is already working.
Stop the machine and thereafter do it again
9
Software fault of the microcontroller or hardware problem. This may
happen in case of faults to the circuits, which measure the current and the
loads.
Try to stop and then restart the machine. If the fault
appears again it is required to verify the regulator.
10
Battery empty, indicates that there occurred a blocking of the brushes.
Recharge the battery
