Item
Content
Standard
Maintenance
4- Joints
Use hex or torque
wrench to tighten loose
bolts.
Securely connected If found bolt loosened, tighten it
1-Battery cables,
terminals clean /
non-corrosive.
2- Follow the installation
sequence: 1. Spring
washers 2. Flat washers
3, Nuts
No evidence of
corrosion
If slight corrosion found after connecting
bar removed, clean it with cloth. If severe
corrosion, replace the connection bar and
clean terminal with sandpaper after
tightening.
5-Safety
Valve
Testing
Inspect for white
crystalline or liquid
surrounding the safety
valve.
No crystalline or
liquid surrounding
the safety valve
1-For crystalline, use a dry cloth for
cleaning.
2-If there is crystalline or liquid, clean it
with a dry cloth. Check and tighten the
safety valve
2.2 Quarterly Maintenance Inspection Items
In addition to the monthly maintenance items above, inspect the following items:
Item
Content
Standard
Maintenance
1- Measurement
of each battery’s
floating voltage
Measure each battery’s
floating voltage by using
multimeter.
Battery floating
voltage differential
pressure must meet
the following
values:
2V series 90 mV
6V series 240 mV
12V series 480 mV
If there are deviations from the reference
values, first discharge the battery group
and then equalizing charge. After
equalizing charge is completed, change to
float charge and run for two months. If
there are still deviations from the
reference values, replace and recycle the
battery.
2-Use the
equalizing charge
to recover the
batteries which
have either lower
capacity or
discharge voltage
than the other
batteries.
Use the equalizing
charge to charge the
battery 10 hours or
more. In case a battery
has a severe deviation
compared to other
batteries, perform
charge / discharge
cycles three times.
Single battery
discharge voltage in
the battery group
must meet the
following values:
2V: 200mV,
6V: 350mV
12V: 600mV
If the battery performance cannot be
recovered, it must be replaced.
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