multi N/C 2100S (duo, pharma)
Maintenance and care
75
}
Switch on the analyzer.
}
Open the carrier gas supply on the pressure reducer.
}
Start the control and analysis software.
}
Check the flow display in the System state window:
– In (inlet flow): 160 ml/min
– Out (outlet flow): 160 ± 10 ml/min
6.7
Replacing the catalyst
If the catalyst loses effectiveness, the combustion tube must be refilled with fresh cata-
lyst.
The software indicates when the maintenance interval of the catalyst has elapsed after a
maximum of 1500 injections. You must then check if the catalyst requires replacement.
To do this, perform measurements with standard solutions of substances that are easy
and difficult to oxidize, such as sucrose and p-benzoquinone.
Dispose of the catalyst in accordance with disposal regulations.
See also
2
6.7.1
Removing the combustion tube
CAUTION
Risk of burns at the hot furnace
¡
Switch off the device and allow it to cool before performing maintenance.
}
Switch off the analyzer via the main switch. Disconnect the power plug
from the socket. Shut off the gas supply on the pressure reducer in the
laboratory.
}
Open the left side wall of the analyzer. Push the accessory modules to the
side if necessary. Do not kink any connection hoses.
– Unscrew the four attachment screws. The screws are captive and re-
main attached to the wall.
– Remove the protective grounding. Set the side wall aside safely.
}
Remove the top cover.
}
Unscrew the Fingertight connection of the carrier gas connection from
the furnace head.
