Safety Requirements - Conrad Electronic MS-9160 Notice D'emploi

cial functions such as an RS 232 interface for connection to a PC, data
hold and min/max value display, reference value measurement (=REL=
relative), 5-location measurement value memory (=MEM), manual
range selection (=R-H), dual display (=EXT) and comparison measure-
ment (=CMP).

3. Safety requirements

3.1 CE identification: The multi-measurement station MS-9160 is EMV-
approved and complies with 89/336/EWG directives; in addition it
is tested for safety and complies with 73/23/EWG low-voltage
directives.
3.2 The universal measuring instrument is constructed and tested to
Safety Class 1 per VDE 0411 and VDE 0550 and left the factory in a
perfect, technically-safe condition. To maintain this condition, the
safety instructions and warning notices appearing in these instruc-
tions must be observed at all times. It is equipped with a VDE-
approved power supply with safety cable and may only be used
with and connected to 230 VAC supplies with safety grounding.
3.3 Current measurements with the built-in multimeter may only be
performed in current circuits, which are themselves fused at 16 A
and in which no voltages greater than 250 VDC/VAC rms and
powers greater than 4000 VA can occur. The measuring instrument
may not be used in IEC 664 Overvoltage category III installations.
The measuring instrument and instrument leads are not protected
against arcing (IEC 1010-2-031, Section 13.101).
3.4 Care must be taken to ensure that the (yellow/green) ground lead
remains sound in the instrument, in its power lead and in the AC
supply, because a damaged ground lead can result in danger to
life. Care must also be taken to ensure that insulation becomes
neither damaged nor destroyed.
3.5 Measuring instruments and accessories do not belong in children's
hands!
3.6 In industrial facilities the accident prevention regulations of the
Industrial Employers' Liability Association for electrical systems and
equipment must be observed.
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3.7 In schools, training facilities, hobby and self-help workshops the
handling of measuring instruments must be responsibly supervised
by trained personnel.
3.8 When opening covers or removing parts, except where this can be
done without tools, live parts can be uncovered. Connection
points may also be live. Prior to adjustment, service, repair or
replacement of components or subassemblies when the instru-
ment is required to be opened, it must be disconnected from all
voltage sources and circuits being measured. If adjustment, main-
tenance or repair is subsequently required on the opened instru-
ment while it is live, these must only be carried out by a specialist
familiar with the associated hazards and relevant regulations
(VDE-0100, VDE-0701, VDE-0683).
3.9 Capacitors in the instrument may remain charged even when the
instrument has been disconnected from all voltage sources and cir-
cuits.
3.10 When effecting replacements, it must be ensured that only fuses
of the specified type and specified current rating are used. The use
of patched fuses or bridging of the fuse socket is not recommen-
ded. Before changing fuses, disconnect the measuring instrument
from the circuit being measured, switch it off and disconnect the
entire measuring instrument from the AC supply (pull out the AC
plug). Remove all connected leads and test probes.
To change the DMM protection fuses carefully remove the second
cover from the top (with a medium-bladed screwdriver). Remove
the defective fuse(s) by unscrewing the fuseholder(s) counter-
clockwise and replace with identical type and specification 0.8 A
quick-acting, 250 V; standard designation: F0.8A/250V and 20 A
quick-acting, 250 V, F20A/250V (Bussmann types). Having succes-
sfully replaced the fuse(s) carefully screw the fuseholder(s) with
the fresh, sound fuse(s) clockwise into their respective fusehol-
der(s). Then carefully close the fuse compartment again.
To change the power supply fuse, with a suitably-bladed screwdri-
ver carefully lever up the cover (noting the notch) of the power
supply voltage switch with the embedded power supply fuse.
Remove the defective fuse and replace with an identical type and
specification. For the 220 to 240 VAC supply the fuse is: 1A slow-
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