5200 Multi Purpose and 5200 Multi Purpose HF Gas Analysers
05230001A / Revision 962
3. Inspect the condition of the white filter element (fitted to the spigot on the rear of
the filter retainer cap). If the filter element is wet or dirty:
• Remove the used filter element from the filter retainer cap, then dispose of
the element.
• Push a new filter element onto the spigot on the inner side of the filter retainer
cap.
4. Inspect the ‘O’ ring on the inner side of the filter retainer cap. If the ‘O’ ring is
twisted or damaged:
• Remove the ‘O’ ring, then dispose of it.
• Fit a new ‘O’ ring to the inner side the filter retainer cap.
5. Ensure that the ‘O’ ring is correctly located in the recess in the inner side of the
filter retainer cap, then refit and tighten the filter retainer cap.
7.3 Regenerate/replace the drying agent
A Multi Purpose without a Sample Conditioning Panel is supplied with a drying tube
which can be either of two types:
• A flexible drying tube, containing an indicating silica gel drying agent.
• A screw-top drying tube, containing non-indicating Drierite
®
drying agent.
If your Multi Purpose is supplied with a flexible drying tube, you must regenerate or
replace the drying agent when it has changed colour from orange to green: if required,
use the procedure given in Section A7.8 to regenerate the drying agent. After
regeneration or replacement of the drying agent, take care when you refit the barbed
connections on the drying tube, to ensure that they are securely fitted.
If your Multi Purpose is supplied with a screw-top drying tube, we recommend that you
regenerate or replace the drying agent after approximately 2 hours of use sampling
wet gases. If required, use the procedure given in Section A7.8 to regenerate the
drying agent.
When you want to replace the drying agent, note that both types of drying agent are
available as spares (see Section A7.9) or from various suppliers. The recommended
granule sizes for the drying agents are:
• 0.5-1.0 mm granule size for the indicating silica gel
• 8 mesh (or smaller) granule size for the Drierite
®
(calcium sulphate) drying agent.
CAUTION
Do not operate the Multi Purpose with the filter element removed. If
you do, particulates in the sample gas will seriously damage the Multi
Purpose.
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