multi EA 5000 Operation
41
6.5 Recommissioning after emergency shutdown (Cl module)
WARNING
Chemical burns due to concentrated sulfuric acid
If a Cl module is connected to the basic module, sulfuric acid can still be in the gas trans-
fer line and the auto-protection valve assembly after an emergency shutdown.
¡ Wear protective clothing when working on the sulfuric acid container.
¡ Exercise particular caution when checking the gas transfer line and the auto-protec-
tion valve assembly.
¡ Observe all specifications in the safety datasheet.
CAUTION
Risk of burns from the hot furnace and from the gas transfer line
¡ Allow the device to cool before recommissioning.
Observe the following when recommissioning the basic module and Cl module. Vent the
analysis system after an overpressure fault (fault message"206 – gas pressure fault") as
described in the following:
} Carefully disconnect the measuring gas hose from the measurement cell.
} Carefully disconnect the gas transfer line from the sulfuric acid container and remove
the sulfuric acid container from the module.
} Disconnect the gas transfer line of the auto-protection valve assembly in the basic
module. Remove the heating cable plug from its socket.
} Carefully remove the gas transfer line and check it for contamination with sulfuric
acid.
} If necessary, clean the gas transfer line:
– Rinse the gas transfer line with distilled water and then with ethanol.
– Dry the gas transfer line (e.g. by blowing it through with an inert gas).
} Wait for the pressure in the system to decrease. Then switch off the basic module.
Shut off the gas supply.
} Open the seal for the auto-protection valve assembly in the basic module. To do this,
flip the toggle switch up. Remove the valve assembly plug from its socket.
} Carefully remove the auto-protection valve assembly from the basic module and
check it for contamination with sulfuric acid.
} If necessary, clean and dry the assembly. Replace the filter.
If cleaning is not possible or if the auto-protection valve assembly is damaged, it
must be replaced prior to recommissioning.
} Reinstall the auto-protection valve assembly in the basic module. Connect the as-
sembly via the cable. Ensure that a filter has been inserted in the auto-protect valve
assembly.
} Refill the sulfuric acid container with sulfuric acid and insert it in the detection mod-
ule. Connect the measuring gas hose with the sulfuric acid container.
} Refit the gas transfer line:
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