User manual

Maintenance
When using the instrument in compliance with the instruction manual, no special
maintenance is required.
Should operational problems occur during daily use, our consulting service (phone
0049(0)7684/8009-429) will be at your disposal, free of charge.
For any queries regarding the instrument, please always quote product designation
and serial number, both marked on the type shield label on instrument rear.
If functional errors occur after expiration of warranty, our after sales service will re-
pair your instrument without delay.
Cleaning
If the instrument is dirty after daily usage, it is advised to clean it by using a humid
cloth and a mild household detergent.
Prior to cleaning, ensure that instrument is switched off and disconnected
from external voltage supply and any other instruments connected (such as
UUT, control instruments, etc.).
Never use acid detergents or dissolvants for cleaning.
Battery Replacement
Prior to storage battery replacement, disconnect the instrument from any
connected test leads.
Never try to disassemble battery cells !The battery contains highly alkaline
electrolyte. Danger of causticization ! If electrolyte gets in contact with skin
or clothing, rinse immediately with water. If electrolyte gets in contact with
the eyes, immediately flush by using pure water and consult a doctor
Never try to make contact between both battery cell poles, for example by
using a wire connection. The resulting short-circuit current is very high and
causes extreme heat. Danger of fire and explosion !
• If the red LED (3) is illuminated, proceed with the battery replacement as
follows (see drawing below):
• Switch off the instrument.
• Loosen the screw in the instrument rear (1).
• Carefully open the casing.
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