Maintenance and Troubleshooting | 5-15
Use an o-ring removal tool to remove the outer o-ring from the
Cell. Take care not to scratch or damage the o-ring groove.
Carefully remove the Cell Window from the Cell by grasping it by
its outer edge and lifting it out of the Cell. Avoid touching the win-
dow surfaces. Set the Window aside on a soft, non-abrasive cloth.
d. While holding the Cell vertically so that the Reflector Block end is
up, remove the three M4 x 20 mm screws that secure the Reflector
Block to the Cell. Remove the Reflector Block carefully to ensure
the Cell Window behind it does not drop out.
e. With the Reflector Block end up, carefully remove the o-rings and
Cell Window from the Cell.
Inspect the Windows for any chips, cracks, or scratches. If they are
not damaged, they can be cleaned and reused; set them aside on a
soft, nonabrasive cloth.
If the Windows are suitable for reuse, use Kimwipes
®
EX-L or an
equivalent extra low-lint tissue to clean the front and back sides. A
high purity solvent, such as Isopropanol (99 %), may also be used
(if suitable for use with the sample species). Rinse with pharma-
ceutical-grade distilled water.
Replace chipped, cracked, or scratched Windows when reassembling
the Cell.
f. Systems with a Cell RTD:
Note the position of the Cell RTD Clamp (see Cell RTD in Figure
5-1) and remove it from the Cell.
g. Inspect the interior of the Cell Body for foreign material. If neces-
sary, use a cotton swab to clean the Cell Body.
If a more thorough cleaning is required, use only cleaning materi-
als that are suitable for use with the sample species and the Cell.
Clean the fittings using the same method as the Cell Body.
For example:
If suitable for the species, an acceptable material is Chem-Thane –
or a nonabrasive detergent and water solution. The Cell Body can
then be rinsed with reagent-grade acetone (if suitable), followed
by a rinse with pharmaceutical-grade distilled water.
h. Allow all components to dry thoroughly before reassembling. Dry,
oil-free instrument air can be used to remove any remaining mois-
ture from the passages in the Cell Body and fittings.
!
CAUTION
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