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74
GMC-I Gossen-Metrawatt GmbH
26
Maintenance
Attention!
!
Disconnect the instrument from the measuring cir-
cuit before opening the instrument to replace the
battery or the fuse!
26.1
Battery
Note!
☞
Removal of Battery for Long Periods on Non-Use
The integrated quartz movement (type METRA HIT
29S) requires auxiliary power even when the instru-
ment is switched off, and thus drains the battery.
We recommend removal of the battery for lengthy
periods of non-use (e.g. vacation). This prevents
excessive battery discharge and leakage, which
may result in damage to the instrument.
Attention!
!
Battery Replacement
Stored measurement values are deleted when the
battery is replaced. We recommend connecting the
AC power pack, or uploading data to a PC with the
help of METRAwin
®
10/METRA
Hit
®
software before
replacing the battery, in order to prevent data loss.
Operating parameters remain in memory, although
date and time must be reset.
You can check current battery condition in the “Info” menu:
SEt
V
inFo
↵
V
bAtt
↵
X.X V.
Before initial start-up, or after storage of your instrument,
make sure that no leakage has occurred at the instrument
battery. Repeat this inspection at regular intervals.
If battery leakage has occurred, electrolyte from the battery
must be carefully and completely removed with a damp
cloth, and a new battery must be installed before the
instrument can be placed back into operation.
If the “
” symbol appears at the LCD display, you should
change the battery as soon as possible. You can continue
to take measurements, but reduced measuring accuracy
may result.
The instrument works with two 1.5 V batteries per IEC R6
or IEC LR6, or with corresponding NiCd storage batteries.