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CLEANING AND MAINTENANCE
5. Clean the thermopile and optical sensor.
a. Wrap a new KIMWIPES tissue around the end of the spatula and moisten it with
cleaning solution.
b. Swipe the moistened tissue across the thermopile and optical sensor. A single
swipe across the sensor is usually sufficient to remove contaminants.
c. Repeat steps a and b using a new KIMWIPES tissue moistened with deionized water.
d. Repeat steps a and b using a new, dry KIMWIPES tissue to remove any moisture
remaining from the cleaning.
e. Visually inspect the thermopile and optical sensor for cleanliness. Clean again,
ifnecessary.
6. Visually inspect the sample chamber and sensors for contaminants, including moisture.
If necessary, repeat the cleaning process using new KIMWIPES tissues.
7. Let stand for 5 min to ensure the sample chamber is dry.
8. After cleaning the AQUALAB VSA, check the instrument performance and correct for any
linear offset that may have occurred during the cleaning process.
a. Run a sample of the activated charcoal pellets from the AQUALAB Cleaning Kit.
This cleans the air inside the chamber, helping it come back to a stable sampling
environment.
b. Verify the linear offset against known verification standards as described in
Section6.2.
c. If a linear offset has occurred, adjust for linear offset.
If the instrument is still not reading samples correctly, contact Customer Support.
5.3 CAPACITANCE FILTER REPLACEMENT
The capacitance filter will need to be replaced if it becomes contaminated.
1. Open the sample chamber.
2. Use tweezers or a small knife blade to pry up the edge of the filter, being careful not to
disturb the sensor beneath.
3. Discard the soiled filter.
4. Wash hands and put on gloves.
5. Press a new filter into place.
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