124 FLOWSIC100 Flare · Operating Instructions · 8013344/11L2/V 2-5/2018-10 · © SICK Engineering GmbH
Assembly and Installation
Subject to change without notice
Specific requirements for use of MCU-P control unit in zone 2 and CL I, Div2
● Labelling
Symbol Place Reason Activity not allowed or required
Beside the
door lock
Warning for
explosion hazard
Do not open while energized.
On the fuse
terminal
locking
Warning for
explosion hazard
The pivoting fuse holder is locked by an
additional spring locking device.
Do not overstretch this while opening
and closing the fuse holder.
Using without or with a damaged
additional spring locking device is not
permitted.
Ensure that the fuse holder is locked
correctly before using.
Do not disconnect unless power
supply has been removed or the area
is known to be non-hazardous.
On the fuse
holder
Warning for
explosion hazard
Only replace the fuse with type "sand-
filled fuse 2 Amp, 250 V type
522.720, manufactured by ESKA".
To prevent repetitive fuse blowing the
user shall clarify the causes and shall
take appropriate precautionary measures
before restarting the equipment.
On the
internal
connectors
locking plate
Warning for
explosion hazard
Some internal connectors are non self-
locking types and must be locked by the
additional locking plate against
unintentional loosening.
Disassemble these connectors before
disconnecting and reassemble it after
reconnecting.
Use without or with a damaged
additional locking device is not
permitted.
Ensure that all internal connectors
and optional modules are locked
correctly before using.
Do not unplug or replug all connectors
and subassemblies unless power has
been removed or the area is known to
be non-hazardous.
Do not disconnect unless power has
been removed or the area is known to
be non-hazardous.
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