Teledyne 6200A - Sulfides analyzer - Manual (Page 138)

TAI Model 6200A SO
2
Analyzer Operator Manual, 02164, Rev. G
3. Replace with charcoal.
4. Re-install felt pad and re-tighten the cap. Make sure the o-ring in the cap is in good shape
and squarely seated.
5. Leak check the assembly, then re-attach scrubber to fitting and clip on the bracket.
8.5 Cleaning Orifice and Orifice Filter
The sample flow across the internal pneumatic system is fixed by the critical flow control orifice and
has no adjustment.
1. Turn off the instrument power.
2. Remove the straight fittings (the far left and far right) only from the vacuum manifold
assembly.
3. With a toothpick or paper clip, remove the spring, filter, o-ring , orifice, and the o-ring from
each port.
4. Discard the filter.
5. Check the orifice by looking it at the light to see that the orifice itself is open. If it is not
open, try cleaning the orifice with a strand of fine wire or immersing in a solvent such as
methyl alcohol, or both.
6. If the orifice will not open, replace it.
7. Replace o-rings if they are deformed or suspected not to seat properly.
8. To replace the orifice, start with the o-ring, then orifice (jeweled end faces upstream), o-ring,
filter, and finally spring.
9. Retape the fittings with TFE tape, install and tighten.
10. Leak check.
8-5