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6.3 BATTERY MAINTENANCE
The battery recharging system is optimized for the best battery life
expectancy.
Any way, every 2 or 3 months it is suggested to discharge com-
pletely the battery pack leaving ON the instrument while it switch
OFF automatically. Than recharge deeply for 24 hours with the AC
adapter connected directly to the instrument.
6.4 BATTERY REPLACEMENT
When it is necessary to replace the battery pack, proceed as
follows:
1) unscrew the battery cover (see fig. 1)
2) remove the battery cover
3) pull out the old batteries
4) insert the new batteries paying attention to the polarity.
5) set the battery type selector in accordance with the type of
batteries inserted in the instrument.
6) reposition the battery cover
7) screw the battery cover.
WARNING:
1) After a battery replacement, set the battery type selector (see
fig. 1) in accordance with the battery type inserted in the
instrument.
2) Don't mix old batteries with new ones.
3) Don't use mixed battery types.
6.5 HOW TO CLEAN THE INSTRUMENT
To clean plastic, rubber, and external parts use only Alcohol:
- Ethyl (pure or denatured) [C
2
H
5
OH]
- Isopropil (pure or denatured) [(CH
3
)
2
CHOH]
6.6 INTERNAL FUSES
The instrument is protected by 2 pico fuses rated 1A, 125 V, quick
acting (F) type.
The first one protects the power supply circuits.
The second one protects the input circuits.
WARNING: the fuse replacement can be made ONLY BY QUALI-
FIED PERSONNEL. IF ANY PROBLEM IS DETECTED, SEND
THE INSTRUMENT TO LOCAL ERO ELECTRONIC BRANCH
OFFICE OR REPRESENTATIVE.
6.7 INSTRUMENT MAINTENANCE
Every year it is advisable to verify the instrument accuracy.
This control must be made by a specialized metrology laboratory or
directly by ERO factory in Novara.
M20-e-6.p65 7/9/01, 2:43 PM67
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