42 © Scania Industrial & Marine Engines 2003-10:1
ELECTRICAL SYSTEM
15. Every 200 hours:
CHECKING THE ELECTROLYTE
LEVEL IN BATTERIES
1. Unscrew the plugs and check the electrolyte level in all cells.
2. Top up with distilled water until the level is 10-15 mm above the plates.
16. Every 200 hours:
CHECKING THE STATE OF CHARGE IN
BATTERIES
Note: Every 200 hours applies to generator sets and the like. Other
installations every 1200 hours.
- Check the density with an acid tester.
In a fully-charged battery it should be:
1.280 at +20°C
1.294 at 0°
1.308 at -20°C
- If the density is below 1.20, the battery must be charged. A discharged
battery freezes at -5°C.
Do not rapid-charge the battery. This will damage the battery in the
long run.
17. Every 200 hours:
CLEANING BATTERIES
Note: Every 200 hours applies to generator sets and the like. Other
installations every 1200 hours.
1. Clean batteries, cables and cable terminals.
2. Check that all cable terminals are firmly tightened.
3. Grease battery terminal posts and cable terminals with vaseline.
Wear gloves and protective
goggles when charging and
handling batteries
The batteries contain a highly
corrosive acid.
Do not connect the terminals up
incorrectly.
This can cause serious damage
to the electrical system.
If the terminals are shorted,
sparking will occur.
Avoid naked flames or sparks
near the batteries.
When the batteries are
charged, oxyhydrogen gas is
formed which is inflammable
and explosive.
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