User`s guide

Routine Maintenance
276
2. Also on the left side of the trap, reattach the brass nut
and tighten.
Figure 81 Trap O-Ring, Brass Ring and Nut
3. Put the Desorb line back into its proper position. Slide
the Desorb tube into the trap. See the following figure.
4. Replace the knurled nut at the right end of the trap.
Tighten by hand until snug.
5. Reattach the magazine and front panel to the instrument.
6. Connect the supply of carrier gas and (dry air) purge gas
and begin purging the cold trap enclosure for 30 minutes
before powering up the instrument. This is especially
important if the ambient air is humid.
7. The trap must be conditioned before analytical use by
establishing carrier gas flows and heating the trap
several times to remove any volatile impurities from the
trap packing. Condition the cold trap using Trap Heat.
See Conditioning the Trap on page 277 for details.
Brass Ring
Nut
O-Ring