Agilent Technologies 8355 Sulfur User Manual page 78

5
Maintenance
C A U T I O N
78
9
Gently pull the quartz tube up through the burner assembly
to remove. The graphite ferrule should remain in the rotating
nut in the burner base.
10
Use a dental tool or similar to remove the old graphite
ferrule from the rotating nut in the burner base.
11
Use two wrenches to disassemble the reducer, then remove
the old ferrule.
12
Install new graphite ferrules. In both cases, the tapered end
of the ferrule faces out, away from the burner.
Reducer, top
Ferrule
Reducer, bottom
Quartz tube
13
Reassemble the reducer. Tighten with two wrenches until
snug.
14
Slide the new quartz tube down through the burner assembly
until it protrudes from the base about 1 cm. (This dimension
is not critical. The tube position will adjust as you tighten the
lower nut onto the coupling.)
When tightening the graphite ferrules onto a quartz tube, tighten
only until snug. Overtightening can damage the ferrules or quartz
tubes.
15
Carefully lower the burner assembly onto the detector base
and thread the nut onto the detector base assembly by hand.
Tighten finger-tight, then snug in place using a wrench. Do
not overtighten.
16
Place the nut and ferrule over the open end of the quartz
tube so that the open end of the nut faces up.
17
Install the nut into the outlet fitting and tighten with two
wrenches just until snug.
18
Reinstall the transfer line onto the outlet fitting. Tighten
until snug (finger-tight). Do not overtighten.
Rotating lower nut
Ferrule
SCD and NCD User Manual