VWR 662-2351, Инструкция по эксплуатации

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19. POWER, REPLACING THE RECHARGEABLE BATTERIES
The meter is powered by two R6 (AA) rechargeable batteries or by power
adapter with stabilised 5V voltage, which has to be conneccted to the
P
connector (Pic. 2). The batteries are necessary in order to keep the clock
working. The degree of filling the
symbol in the top right corner of the
LCD informs about the condition of the batteries. Red symbol informs
that charging is necessary. When the voltage drops below the minimal value,
the meter turns it self automatically off. After connecting the power adapter
the charging process begins, what is signalised by filling up the
symbol.
When the symbol is displayed continuously, the charging process is finished.
The meter may work while being charged. In order to replace the batteries, it
is necessary to unscrew two screws in the lower wall of the meter, pull out
the container with batteries and replace them, paying attention to insert the
batteries according to their polarity. Next, put the new batteries into the meter
and mount the wall. The wall has a sealing ring on the edge. While closing
the meter, it is very important to pay attention to it - the ring should be put
inside the housing in the whole perimeter. Next, screw in the screws till the
moment of resistance (not too hard). Leaving the wall improperly sealed may
cause the meter’s flooding. This kind of failure is not repaired under the
warranty conditions.
Caution: application of batteries instead of rechargeable batteries when
using the power adapter may result in fire and damage the meter.