Owners manual MELEX 4XX MELEX 2021/01
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6. Connect the power plug of the charger to a power socket with a protective contact, connect
the charging plug to the charging socket on the vehicle.
7. After recharge of the batteries (the charger signals the end of charging), pull the charger's
plug out of the power socket, pull the charger's plug out of the charging socket.
8. Directly after charging the batteries (30-60 min.) it is forbidden to make any labors at
vehicle’s electric installation (including disconnecting or connecting the installation), make
sure yourself that batteries compartment is ventilated,
9. After each charging check electrolyte level, which should be about 12mm above upper
edge of battery plate and eventually refill with distilled water (in the case of a central water
filling system, follow the system instructions).
10. Check the status of battery recharge on display.
When the battery charger signals the end of charging and battery charging indicator does not
show full charging of batteries, the batteries inspection by voltage and electrolyte density
measurement should be done.
The battery charger used for charging has to be capable to charge the batteries of
appropriate voltage 48V and capacity of installed batteries.
Check the battery charger instructions – especially pay attention on chargers work in
low temperatures.
A battery in a vehicle with on-board charger can be charged with this charger. Two
alternative charging ways are possible: by off-board charger or by on-board charger.
It is forbidden to use both ways of charging at the same time.
ATTENTION:
Within exploitation of batteries it is very important to avoid exceeding of electrolyte
temperature above +45°C, as well electrolyte density over 1.285 [g/cm3], especially during
charging process.
Stop the charging process in case the temperature is exceeded over +40°C or electrolyte
density is exceeded above 1.285 + 0,007 [g/cm3].
In cases when the temperature rises, check the condition of the battery and the charger.
In case of the excessive heat generation (lack of required electrochemical transformations)
the following must be checked:
1. Electrolyte temperature
2. Electrolyte density/voltage of battery
In case the electrolyte temperature increase above +40°C and lack of increase of
electrolyte density or voltage, it is required to interrupt charging process.
Continuous not-full charging or overcharging can damage batteries or shorten their life.
Equalizing charging of lead-acid batteries
WARNING:
Equalizing loading applies only to open-type lead-acid batteries. Don’t make any
equalizing charging in case of sealed cell batteries (GEL or AGM).
Equalizing charge applies only if the difference in density of the electrolyte between the
cells of the battery is equal to or greater than 0.030 g/cm3 or voltage difference between the
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