7
Detectors Advanced Maintenance
Cleaning or Replacing the NPD Jet
290
TRACE 1300 and TRACE 1310 Hardware Manual
Thermo Scientific
c.
Place the jet in the ultrasonic cleaner, filled with liquid detergent.
d. Sonicate the jet for about five minutes.
15. Reinsert the jet
a.
Using the proper tool, reinsert the cleaned (or a new) jet, into the detector body and
screw it in its seat.
b. Using forceps or tweezers, reinstall the insulator into the detector body.
16. Reinstall the collecting electrode.
a.
Place the cleaned (or a new) collecting electrode in its housing.
b. Using a 6-mm wrench, screw the collecting electrode pin into its seat on the detector
body.
c.
Screw the straight plug crimp connector of the collecting electrode cable to the
collecting electrode bulkhead jack.
17. Reinstall the thermionic source.
a.
Remove the protective cap covering the new thermionic source.
b. Mount and guide the new source assembly on the NPD body proceeding in the
reverse order in which it was removed. Be careful not to bump the bead on the sides
of the body and collecting electrode.
c.
Rotate and align the thermionic source connector, then tighten the dowel to fix the
connector to the support using the T6 Torxhead key. See
.
Figure 275.
Reinstall Thermionic Source (1)
18. Reconnect and screw the straight jack connector of the collecting electrode cable to the
collecting electrode bulkhead jack. See
Note
If after cleaning the physical condition of the jet does not permit its reuse,
replace the jet with a new one.
Dowel
Correct Alignment