9
on the base frames in most of AKSA Gensets.
Battery charging systems;
While the Genset is running, batteries are charged by
charging alternator.
If the Genset is not running, batteries are charged by
battery chargers that powered by mains.
4.2. Maintenance Batteries
Warning
- Do not smoke or allow sparks, flames or other sourc
-
es of ignition around batteries. Hydrogen gas generat-
ed by charging batteries is explosive.
- Wear an acid resistant apron and face shield or gog
-
gles when servicing the battery. If electrolyte is spilled
on skin or clothing, flush immediately with large quan
-
tities of water.
- Take out the metallic things in your wrist and protect
your wrist and hand.
- Disconnect the battery negative (earth) lead first and
reconnect last.
- Always ensure that battery maintenance is carried
out in a well ventilated area.
- The starting batteries should be located as close as
possible to the generator set while still being accessible
for servicing. This will prevent electrical losses.
Adding the first electrolyte in to battery
1. Take out the protective cover above the battery,
and vent caps.
2. Add electrolyte to the Battery up to 15mm above
the plates. Electrolyte specific gravity should be 1,28 at
20 °C .Battery and electrolyte temperature should be
more than 10°C.
3. Wait 15 minutes .the heat will increase between
the plates and bobble will occur above the electrolyte.
4. Fix the vent caps.
5. Check the battery with hydrometer after 15 min
-
utes.
6. Minimum charging time is 6 hours. Check the
charging amps and electrolyte level every one hour .if
there is no changing within one hour, it is charged.
7. When the battery is charged, check the electrolyte
level after 2 hour , if the level is decreased add water
up to 10 mm above the plates.
Battery Maintenance
• Keep the top of the battery and its terminals clean.
• Cover the battery terminals and its connections with
Vaseline.
• Tighten the terminals but not tighten it hardly.
• Control the electrolyte level periodically. It must be
10 mm above the plates.
• Control the abrasion in the charge alternator belt
and check periodically the belt tension according to
producer’ recommendation.
• Ensure that your battery is not uncharged.(please see
the below table).
State of Charge
100%
75%
50%
25%
Discharged
Specific Gravity
1.265
1.225
1.190
1.155
1.120
Voltage - 12V
12.7
12.4
12.2
12.0
11.90
Table 4. 2.1. Typical generator set configuration
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