Teledyne T200, Operation Manual, Page: 215 / 425

Teledyne API
– T200 NO/NO
2
/NO
X
Analyzer Operation Manual Instrument Maintenance
213
3. Remove the integrated screws with a Phillips screw driver and remove the scrubber
manifold from the chassis.
4. Using a 9/16” wrench, remove both fittings from the cartridge.
5. Discard the glass wool.
6. Pour the contents of the scrubber manifold onto a sheet of white paper. If
necessary, remove the plug to ensure that all the contents are poured out.

Notice any discoloration of the contents, which is usually white and slightly
transparent.

The amount of discolored chemical (usually with yellow tint) may give you an
indication of the lifetime of the chemical in your application.
The maintenance cycle of this item is dependent on ambient moisture, sub-micron
particle load and other factors and may differ from that shown in Table 11-1.
7. Discard the used silica gel desiccant without touching it. It may contain nitric acid,
which is a corrosive and highly irritating substance.
CAUTION
–
G
ENERAL
S
AFETY
H
AZARD
Immediately wash your hands after contact with the silica gel disiccant.
8. Using a small powder funnel, fill the cartridge with about 10 g new silica gel
desiccant (Teledyne API P/N CH43) so that it is level on both legs of the cartridge.

Slight vibration is required to settle the chemical into the cartridge and achieve
tightest packing, which increases performance and lifetime of the filter.

Ensure that the level of the chemical does not protrude farther than the first two
threads of the NPT fitting.
I
MPORTANT
I
MPACT ON
R
EADINGS OR
D
ATA
Use only genuine, pre-conditioned Teledyne API's refill kits for this procedure.
Teledyne API's refill kits have been properly conditioned to prevent a significant
increa
se of the T200’s Auto Zero value which can cause large negative offsets,
which may take 2-3 weeks to disappear.
Do not leave this material uncovered for more than a few seconds, as it will
absorb contaminants from ambient air. Always store unused, well-covered refill
material in a cool dry place.
9. Seal the silica gel desiccant with 1 cm
3
of glass wool on each well.

Ensure that the plug is large enough and compressed into the cartridge so that
the chemical is securely held in place.
10. Add new Teflon tape (P/N HN000036) to the NPT fittings.
11. Screw the NPT fittings back into the scrubber manifold.
12. Screw the cartridge back onto the chassis; orientation is not important.
13. Evaluate the ferrules on the tubing.

If the ferrules are too old, we recommend replacing them with new ferrules.
14. Reconnect the tubing using 7/16” and 9/16” wrenches.
06858E DCN7057