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8. Battery
8.1. Battery indication
The latest battery status is symbolised by a three-
stage battery indicator.
= filled battery
= half-empty battery
(still many measurements possible)
= flat battery
The background lightning switches-
off automatically, depending on
type of battery you still can perform
at least 30-100 measurments.
Attention!
When the flat battery symbol flashes, then no more
measurements can be performed and the battery
has to be replaces immediately.
The device requires a 9 V block battery IEC 6 F22
(zinc-carbon) or IEC 6 LR61 (alkaline manganese).
8.2 Replacing the battery
Loosen the screw at the back of the instrument
which secures the battery compartment lid, and
remove the lid.
Let the battery drop out of the battery compartment
with its CAT IV protection cover and exchange it.
Therefore, snap the battery contacts onto the 9 V flat
cell battery and insert the battery together
with the CAT IV protection cover into the battery
compartment. Put the lid back on the battery com-
partment and screw it tight.
Regularly make sure that the battery of your device
does not leak. In case it does, you have to replace
the electrolyte completely and insert a new battery.
In case of a long storage period take the battery out
of the device.
9. Maintainance
The Prüfball is absolutely maintainance-free. Never-
theless, observe the following information in order to
maintain safe operation:
Always keep the voltage tester dry and clean. The
housing can be cleaned with a cloth dampened with
alcohol (isopropyl) or soapy water.
