Maintenance
Manual_Grid_Power_FNC_en_V3_0
46
10.6.
Fill up the Electrolyte Level with Distilled Water
Note - valid for grid|power FNC
®
VR cells
No water addition or filling is required over the service life if the battery system operates on float
charge at 20 °C.
If, however, you have to fill up the electrolyte level with distilled water, remove the VR plug
carefully. It is recommended to use the HOPPECKE plug opener (Mat. No. 4142500125)
Alternatively use a small, slot screwdriver. Grab the plug with your hand and slowly twist and
vertically pull out the plug from the cell opening.
Wear personal protective equipment because grid|power FNC
®
VR cells operate under pressure.
Removing a VR plug can release electrolyte spray.
WARNING!
Contact with the electrolyte can happen when measuring the electrolyte level. It can cause
severe chemical burns to the skin and severe damage to the eyes.
Wear safety glasses and safety gloves (five finger gloves made of latex or PVC) when working on
the batteries.
1. You have checked the electrolyte level as described in
