Operation
multi EA 5100
40
6.5
Recommissioning after emergency shutdown (Cl module 5100)
WARNING
Chemical burns due to concentrated sulfuric acid
If a Cl module 5100 is connected to the basic module, sulfuric acid can still be in the gas
transfer line and the auto-protection valve assembly after an emergency shutdown.
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Wear protective clothing when working on the sulfuric acid container.
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Exercise particular caution when checking the gas transfer line and the auto-protec-
tion valve assembly.
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Observe all specifications in the safety datasheet.
CAUTION
Risk of burns from the hot furnace and from the gas transfer line
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Allow the device to cool before recommissioning.
Observe the following when recommissioning the basic module and Cl module 5100.
Vent the analysis system after an overpressure fault (fault message"206 – gas pressure
fault") as described in the following:
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Carefully disconnect the measuring gas hose from the measurement cell.
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Carefully disconnect the gas transfer line from the sulfuric acid container and remove
the sulfuric acid container from the module.
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Disconnect the gas transfer line of the auto-protection valve assembly in the basic
module. Remove the heating cable plug from its socket.
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Carefully remove the gas transfer line and check it for contamination with sulfuric
acid.
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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).
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Wait for the pressure in the system to decrease. Then switch off the basic module.
Shut off the gas supply.
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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.
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Carefully remove the auto-protection valve assembly from the basic module and
check it for contamination with sulfuric acid.
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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.
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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.
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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.
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Refit the gas transfer line:
