Hoses And Connections; Cleaning The Quartz Windows - Agilent Technologies Graphite Tube Atomizer GTA 120 User Manual

Maintenance
Using a cotton bud or similar clean the graphite surfaces to remove
any loose graphite or other material that may be present. Check to
ensure that the bore and the injection hole are free of loose carbon or
sample residues.
Check for any pitting on the electrode surface. If necessary replace
the electrodes.

Hoses and Connections

Regularly inspect all hoses and connections (gas and water). You
should immediately contact your Agilent field service engineer if you
find any leaks.

Cleaning the Quartz Windows

The quartz window assemblies on either side of the furnace need to
be cleaned regularly.
To remove a window assembly, first grasp the knurled edge of the
window and then pull it out of the furnace while twisting it.
Carefully clean both sides of the quartz window. Use only alcohol and
an optical tissue. Never use coarse cloths or abrasive cleaning agents.
Inspect the inside of the window mounting and clean off any
contamination.
While the window is removed, check the o-ring on the base of the
assembly, it should be supple, pliable and free of kinks or cuts. Also
check the silicone rubber seal on the window. If either of these are
damaged they should be replaced.
If necessary, the complete window assembly can be placed in a
detergent solution in an ultrasonic bath. The sonication may help to
remove stubborn deposits from the window. After sonication, rinse
the window with distilled water and allow to dry before refitting.
To replace the window assemblies, push and twist the assembly back
into the electrode housing.
54 Agilent Graphite Tube Atomizer GTA 120 User's Guide