Maintenance
Electrical System
116 9831/0650-3 116
Maintenance free batteries used in normal temperate climate applications should not need topping up.
However, in certain conditions (such as prolonged operation at tropical temperatures or if the alternator
overcharges) the electrolyte level should be checked as described below.
Figure 97.
A Battery B Cover
C Electrolyte level (6mm above the cell)
1. Open the battery access panel and get access to the battery.
2. Disconnect the battery.
3. Remove the battery from the machine.
4. Remove the covers.
5. Look at the level in each cell.
5.1. Make sure that the electrolyte is above the plates by specified value.
Length/Dimension/Distance: 6mm
5.2. If necessary, top up the battery with distilled water or de-ionized water.
6. Install the battery.
7. Close the battery access panel.
Charging the Battery
If the battery voltage is below 24.8V and 12.4Vfor 12V system, the engine cranking speed is so low that the
engine does not start, charging is required.
If the generating set has an on board battery charger this will take care of charging when connected to the
auxiliary mains supply. If a charger is not fitted, the recommended charging within 1/10 of the normal capacity
for 5–6h must be carried out by connecting an external charger.
If using the onboard battery charger the charge current will be controlled by the unit, and reduced accordingly
when the battery is fully charged. At this point the battery charger will switch to trickle charge, maintaining the
battery in a fully charged condition.
Battery Life
The control panel, remote communication (if installed) and other stand-by functions, provide some drain on the
battery. JCB recommend that wherever possible an onboard battery charger is fitted. This charger will provide
a maintenance charge to the system batteries allowing for optimum system performance whenever start-up
signal is received. The onboard battery charger requires an external supply, therefore installation of this unit
is not possible in all applications.
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