Operation
4
Drive batteries
Display_e0047a
On the display unit, the yellow (plug symbol)
and red (lightning bolt symbol) indicator lights
flash alternately for the charging process.
In operating mode (towards th
eendofthe
main charging phase), the pum
p initially runs
for 2 minutes and then switche
stoapause
mode for a duration of 13 minu
tes.
This cycle is continued until the end of the
charging process as a whole. The pump
is connected to the recirculated air system
of the drive battery via the hose connection
(3). The bubbles of air rising upwards cause
circulation of the electrolyte and prevent acid
stratification.
Pressure monitoring
Thepumpisequippedwithapressureswitch
that monitors the system pressure. In operat-
ing mode and during the associated 2-minute
running time of the pump, the pressure switch
is interrogated constantly.
Operating Instructions – 3888011701 EN – 12/2017 199
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