Standard and optional equipment
Water refilling system
Electrolyte circulation
+
Wi-iQ
®
Level sensor
+
Standard
+ Option
Water refilling system
1. Application
The water refilling system is used to automatically maintain
the nominal electrolyte levels.
The charging gasses escape through the vent on each cell.
NO WATERING IN THE FIRST 10 CYCLES.
2. Function
A valve and a float together control the topping up process
and maintain the correct water level in each cell.
The valve allows the flow of water into each cell and the
float closes the valve when the correct water level has been
reached.
For fault-free operation of the water refilling system, please
note the instructions below:
2.1 Manual or automatic connection
The battery should be topped up shortly before completion
of a full charge, as at this point the battery has reached a
defined operational state resulting in satisfactory electrolyte
mixing. Filling takes place when the connector (7) from the
tank is connected to the coupling (6) on the battery.
2.1.1 If manual connection is used the battery should only
be connected to the filling system once a week.
2.1.2 If automatic coupling is used (with a magnetic valve
controlled by the charging apparatus) the charger
main switch selects the correct moment for filling.
Note: In this case we recommend water refilling at
least once a week to ensure the correct level of the
electrolyte.
2.1.3
In multiple shift and warm ambient temperature
operations, it may be necessary to have shorter
topping up intervals.
2.2 Filling time
Filling time depends on the utilization rate and the corres-
ponding battery temperature. Generally speaking, the top up
process takes a few minutes and can vary according to the
battery range.
2.3 Working pressure
The water refilling system should be installed in such a way
that a water pressure of 0.2 to 0.6 bar is obtained (with at
least 2 m height difference between the upper edge of the
battery and the lower edge of the tank). Any deviation from
this means that the system will not function properly.
2.4 Purity
The topping up water must be purified. The water used to
refill the batteries must have a conductance of not more
than 30 μS/ cm. The tank and pipes must be cleaned before
operating the system.
2.5 Pipe system on the battery
The pipe system to the individual battery cells must
follow the battery’s electrical circuit. This reduces the risk of
current leakage in the presence of electrolytic gas causing
an explosion (EN 62485-3). A maximum of 20 cells may be
connected in a series.
The system should not be modified in any way.
2.6 Working temperature
In winter, batteries fitted with a water refilling system should
only be charged or refilled in a room temperature above 0°C.
2.7 Flow control
A flow indicator built into the water supply pipe to the battery
monitors the filling process. During filling the water, flow
causes the built-in disc in the flow indicator to turn.
When all the plugs are closed the disc stops, indicating that
the filling process is complete.
1. Tank
2. Outflow connector with ball valve
3. Plug with magnetic valve
4. Plug with ball valve
5. Flow control
6. Coupling
7. Connector
8. Battery charger
9. Charger main switch
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