Serinus 44 User Manual 3.0
Figure 58 – Removing the Desiccant Pack
3. Remove the old desiccant packs and replace with new ones. Do not attempt to dry and reuse the
old packs.
4. Inspect the inside of the PMT housing (by touch or with an inspection mirror) to check for
moisture inside the housing. If moisture is detected inside the housing or the desiccant packs are
saturated, the desiccant packs should be replaced more frequently.
5. Reinstall the desiccant cap by gently twisting and pressing the cap back into the PMT housing. It
may help to apply a small amount of lubricant to the O-ring on the desiccant cap. Secure with
two screws.
CAUTION
Do not attempt to use the fastening screws to push the desiccant cap in place in
the PMT housing. This will damage the O-ring.
6. Reconnect power and restart the instrument.
6.3.7 Cleaning the Reaction Cell
As O
3
reacts with the contaminants in the air it will begin to deposit a film on the walls and optical
filter within the cell. This will result in decreased sensitivity of the instrument and increase the
instrument gain required to take readings. The reaction cell should be cleaned periodically to remove
deposits and restore sensitivity.
CAUTION
Take extreme care not to damage the pressure transducer assembly on top of the
reaction cell.
Equipment Required
Phillips Head Screwdriver
Black Electrical Tape
Sonic Bath or Alternatively Isopropanol Alcohol
Clean Dry Oil Free Compressed Air
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