PIAGGIO NRG POWER PUREJET, Руководство по ремонту, Страница: 60 / 248

Battery maintenance
The battery is the electric device that requires the
most careful monitoring and diligent maintenance.
The maintenance rules are:
1) Check the level of the electrolyte
Check regularly that the electrolyte level is at up-
per level. Use only distilled water to top up the
level.
If the battery needs topping up very frequently,
check the vehicle electrics: the battery is probably
working in overload conditions which will lead to
rapid deterioration.
2) Check the charge
After topping up the electrolyte, check the density
using a densimeter (see figure).
CHECKING ELECTROLYTE DENSITY
Specification Desc./Quantity
Keep the tube vertical
Check with bare eye
The float must be released
When the battery is charged, the density should be 30 ÷ 32 Bé corresponding to a specific weight of
1.26 ÷ 1.28 at a temperature not under 15° C.
If the density falls below 20° Bé, the battery is completely run down and needs to be recharged. When
a battery is being charged the voltage of each element must be 2.6 ÷ 2.8V.
The discharge limit of each element is 1.8V.
When charging is completed, check the level and density of the electrolyte as well as the voltage of
each element. If the vehicle is not used for long periods of time (1 month or longer) the battery must be
periodically recharged.
The battery will completely discharge over three months. When the battery is refitted onto the vehicle,
be careful not to invert the connections: remember that the ground wire (black) needs to be connected
to the negative (-) terminal, while the red wire is connected to the terminal marked with the positive
(+) sign.
3) Recharging the battery
WARNING
BEFORE RECHARGING THE BATTERY, REMOVE THE CAPS OF EACH CELL.
KEEP THE BATTERY AWAY FROM NAKED FLAMES OR SPARKS WHILE IT IS CHARGED.
FIRST DETACH THE NEGATIVE LEAD BEFORE REMOVING THE BATTERY FROM THE VEHICLE.
Normal charging on the bench is done with the specific battery charger (single or multiple), positioning
the battery charger selector on the type of battery to recharge at a current of 0.9A for around 6 ÷ 8
Electrical system
NRG Power Purejet
ELE SYS - 16