Bomag BW 213 D-4 Operating Instructions, Maintenance Instructions page 67

5.20 Service the battery
Danger
!
Danger of cauterisation ! Danger of explosion!
When working on the battery do not use open
fire, do not smoke!
The battery contains acid. Do not let acid come
in contact with skin or clothes!
Wear protective clothing!
Do not lay any tools on the battery!
Environment
Dispose of the old battery environmentally.
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Note
Maintenance free batteries also need care. Main-
tenance free only means that the fluid level does
not need to be checked. Each battery suffers un-
der self-discharge, which may, in not checked oc-
casionally, even cause damage to the battery as a
result of exhaustive discharge.
The following therefore applies for the service
life:
Switch off all consumers (e.g. ignition, light, in-
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side light, radio).
Check open-circuit voltage of the battery at
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regular intervals. At least once per month.
Reference values: 12.6 V = fully charged; 12.3 V =
50% discharged.
Recharge the battery immediately after an
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open-circuit voltage of 12.25 V or less is
reached. Do not perform boost charging.
The open-circuit voltage of the battery occurs ap-
prox. 10 hours after the last charging process or
one hour after the last discharge.
After each charging process allow the battery
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to rest for one hour before taking it into service.
For resting periods of more than one month
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you should always disconnect the battery. Do
not forget to perform regular open-circuit volt-
age measurements.
BW 213 D-4
Caution
!
Exhausted batteries (batteries with formation
of sulphate on thge plates are not covered un-
der warranty!
Open the engine hood and remove the cover-
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ing.
Fig. 88
Remove the battery (Fig. 88) and clean the
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battery compartment.
Clean the outside of the battery.
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Clean battery poles and pole clamps and
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grease them with pole grease (Vaseline).
Check the fastening of the battery.
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On serviceable batteries check the acid level,
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if necessary top up to the filling mark with dis-
tilled water.
Charging voltage recommendation
Fig. 89
B O M A G
E v e r y 5 0 0 o p e r a t i n g h o u r s
6 7