multi EA 5100
Maintenance and care
129
}
Remove the combustion tube from the combustion furnace as described.
}
Roll a small amount of quartz wool into a loose plug approx. 1.5 to 2 cm
long.
}
Insert the quartz wool plug into the inner tube of the combustion tube
with a clean glass rod.
}
Push the quartz wool plug into the tube until the positioning mandrel is
at the center of the plug.
The plug must not seal the bottom slot in the inner tube.
The plug should cover the entire cross section of the inner tube.
}
After replacing the quartz wool: Clean the analysis system by performing
at least 3 measurements with a pure solvent (e.g., isooctane, toluene, xy-
lene).
14.2.4 Installing the combustion tube
WARNING
Risk of explosion and sooting due to improper connection of the gases to the
combustion tube.
¡
The connections for argon and oxygen on the combustion tube must not be mixed
up!
CAUTION
Risk of burns from hot components and possible damage to the seal of the auto-
protection valve assembly.
¡
Allow the combustion tube to cool before cleaning after incineration.
¡
Allow the combustion furnace to cool before inserting the combustion tube.
NOTICE
Alkaline salts (hand perspiration) cause crystallization in the quartz glass when heating
the combustion furnace. which reduces the service life of the combustion tube.
¡
Wear protective gloves when inserting the combustion tube and do not touch the
tube with bare hands.
¡
Wipe the outside of the combustion tube off with ethanol and a paper towel before
insertion.
