English
47
Maintenance /
Battery Replacement
8.0 Energy Management
Approximately 5 minutes after last key operation, the
instrument switches off automatically (auto-power-
off). To switch the instrument on again, turn rotary
switch from the „OFF" position to the desired func-
tion.
If the batteries are almost completely discharged, the
battery symbol (5) appears. The instrument continu-
es functioning without necessarily respecting the
specifications.
If the batteries continue to be used and discharged,
the instrument switches off at a point when the mini-
mum battery voltage level is reached and may not be
switched on again.
9.0 Maintenance
When using the instrument in compliance with the in-
struction manual, no special maintenance is required.
9.1 Cleaning
If the instrument is dirty after daily usage, it is advised
to clean it by using a damp cloth and a mild household
detergent.
Prior to cleaning, ensure that the instrument is
switched off and disconnected from external volt-
age supply and any other instruments connected
(such as EUT, control instruments, etc.).
Never use acid detergents or dissolvants for
cleaning.
10.0 Battery Replacement
If the battery symbol
appears in the display, pro-
ceed with battery replacement.
Prior to battery replacement remove the instru-
ment from all measurement circuits.
The right order of the batteries is shown on the
inside of the battery compartment.
Batteries with reversed polarity can lead to in-
strument destruction. Furthermore, they may
explode or ignite.
Only use batteries as described in the technical
data section type 6LR61.
Switch off the instrument.
Loosen screws on the instrument rear.
Remove battery case cover (by slightly knock-
ing the instrument in the palm of the hand).
Remove discharged battery.
Insert new battery by respecting the correct
polarity.
Replace battery case cover and tighten screws.
Instrument is operational.
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