Metrohm 711 Liquino - Manual (Page 12)

2.2 Safety information
711 Liquino, Instructions for use 6
cate the source of the fault with the aid of the diagnosis functions. If the
cause of the malfunction cannot be found please contact the Metrohm ser-
vice department.
The instrument should only be opened when switched on under exceptional
circumstances. As this exposes electrically live components it should only
be carried out by an expert who is familiar with the risks involved.
The instrument must be separated from all electricity sources be-
fore it is opened. Make sure that the mains plug has been pulled
out.
Condensers in the instrument may still be charged even when the instru-
ment is no longer connected to the mains supply.
Changing the battery
The connecting wires of the old battery must be cut before desoldering so
that any residual charge which may still be present cannot be short-
circuited. The polarity of the new battery must be taken into account when it
is fitted.
Lithium batteries cannot be recharged and should not be short-circuited or
exposed to temperatures above 70 °C under any circumstances.
Old batteries must be disposed of in an environmentally acceptable way
and must not be burnt.
Static electricity:
The circuit contains components which could be destroyed by electrostatic
charges or whose functions could be affected by them. Work on an open
instrument should only be carried out in ESD-protected surroundings.
Suitable measures:
1.
A conductive mat on the work surface connected to the earth conductor
via a resistor of approx. 1 MΩ.
2. Earthed soldering iron.
3. Persons working with components must have their wrists connected to
the earth conductor via a resistor of approx. 1 MΩ.
4. Components and assembled PCBs should only be stored and trans-
ported in conductive packaging or foam.
5. New components should be stored in their original packaging until re-
quired.
If it becomes apparent that the instrument can no longer be operated safely
then it should not be used at all.