2
Safety instructions
This instruction manual contains important safety information.
Read this instruction manual.
Keep this instruction manual in a safe place. Always include this instruction
manual when passing the system on to third parties.
Heed all warnings.
Follow all instructions.
WARNING: To reduce the risk of fire or electric shock, do not expose the device
and the mains unit to rain or moisture.
Disconnect the mains connector from the wall socket to completely discon-
nect the device from the mains during lightning storms or when unused for
long periods of time.
Use only the supplied mains unit.
Ensure that the mains unit is:
always readily operable and easily accessible,
properly plugged into the wall socket,
only operated within the permissible temperature range (see "Specifi-
cations" on page 14),
not covered or exposed to direct sunlight for longer periods of time in
order to prevent heat accumulation.
Use of the MO 2000 CU central unit
The MO 2000 CU central unit has been designed for use with the MO 2000 H
optical microphone.
To meet the requirement of the ATEX directive, the central unit must be
installed and operated outside areas with potentially explosive atmospheres!
Use of the MO 2000 H optical microphone
When installed in the MZWW 2000 weather and wind protection, the
MO 2000 H optical microphone meets the IP 54 standard for dust and mois-
ture resistance. In combination with the MZWW 2000, the optical microphone
is approved and permitted for:
use in zone I explosive atmospheres
use in potentially explosive atmospheres of group IIC and temperature class
T6.
Rack mounting
When installing the device in a closed or multi-rack assembly, please consider
that, during operation, the ambient temperature within the rack may signifi-
cantly rise above room temperature. However, the ambient temperature
within the rack must not exceed the temperature limit specified in the speci-
fications.
When installing the device in a rack, take good care not to affect the ventila-
tion required for safe operation or provide additional ventilation.
Make sure the mechanical loading of the rack is even to avoid a hazardous
condition such as a severely unbalanced rack.
When installing the device in a closed or multi-rack assembly, please note
that intrinsically harmless leakage currents of the individual devices may
accumulate, thereby exceeding the allowable limit value. As a remedy,
ground the rack via an additional ground connection.
TÜV 07 ATEX 553824
OPTICAL MIC CENTRE UNIT
II (2) G [Ex op is T6 Gb] IIC
II (2) D [Ex op is Db]
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