Avant e5
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Insulation resistance test
At least once per year, the insulation resistance of
the loader and the battery must be checked by an
electrical specialist. The tests on the insulation
resistance of the battery must be conducted in
accordance with standard EN 1987-1.
The insulation resistance of the battery thus
determined must not be below 2400Ω (50Ω per Volt
of nominal voltage), in compliance with EN 50272-3.
Test electrolyte condition and record results
After charging has ended the specific gravity and the
temperature of the electrolyte in all cells should be
measured and recorded.
If significant changes from earlier measurements or
differences between the cells or bloc batteries are
found further testing and maintenance are required.
Contact service.
Test of condition of each individual battery cell
Measurement of the output voltage at rest of total
battery pack or individual cells will not give accurate
result of the condition of the battery. For more
accurate results and troubleshoot, measure output
voltage of each cell under load.
To test, operate the loader under heavy load. Lock
auxiliary hydraulics to ON without an attachment at
high motor rpm to apply load.
Use a voltmeter and measure each individual cell.
Write down output voltage of each cell under load
and at idle. Those that have lower voltage output
under load are likely damaged and need further
investigation.
Nominal density of electrolyte*
Fully charged battery
1,29 kg/l
Completely discharged
battery
1,13 kg/l
* Temperature affects measured specific gravity of
electrolyte. Therefore the temperature of electrolyte
at the time of measurement must be recorded.
Correlation factor is -0.0007 kg/l per °C.
1.28 kg/l at 45°C corresponds to a specific gravity of
1.29 kg/l at 30°C
Replacing battery pack
To remove the battery pack from the loader, use
lifting equipment capable of lifting the entire battery
pack. Never remove individual cells of an installed
battery. The battery must be replaced as a complete
assembly. Replacing individual cells without full
analysis of the condition of all battery cells can cause
the new replaced cells to get damaged quickly.
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