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8020216/19YN/V3-0/2020-12| SICK
O P E R A T I N G I N S T R U C T I O N S | DUSTHUNTER SP100 Ex-3K
Subject to change without notice
14
DECOMMISSIONING
14
Decommissioning
14.1
Switch-off states
The measuring system must be decommissioned:
●
Immediately when the purge gas supply fails.
●
When the system is to be put out of operation for a longer period of time (as from approx.
1 week).
Information on transport and storage of the device components:
.
14.2
Switching off and dismantling
Work to be performed
▸
Disconnect the connection line to the control unit.
▸
Dismantle the sender/receiver unit from the duct.
▸
Close off the flange with tube with a blind flange (
see “Fastening technology”, page 135
).
▸
Switch off the purge gas supply.
▸
Unscrew the purge gas hose from the connections.
▸
Disconnect the control unit from the supply voltage.
▸
Disconnect the potential equalization.
NOTICE:
Purge gas supply
An interruption in the purge gas supply to a duct-mounted sender/receiver unit can
damage the device.
▸
Never switch off or interrupt the purge gas supply when the sender/receiver unit is
fitted on the duct.
WARNING:
Connect potential equalization when working on the measuring system
Static charge can lead to explosions.
▸
Connect the potential equalization as first task during assembly and as last task
during disassembly.
WARNING:
Danger to health through gas and hot parts when the device is removed
from the duct
▸
Only remove the sender/receiver unit on systems with hazard potential (higher
internal duct pressure, hot, aggressive, explosive gases/dusts) when the system is
at a standstill.
▸
Take suitable protection measures against local or plant-specific hazards.
▸
Secure switches that should not be switched on again for safety reasons with signs
and safeguards to prevent unintentional switching.
