MAGEE Scientific Aethalometer AE33 User Manual page 63

Aethalometer
Model AE33
6. While pressing the release button upward, grasp the lower portion of the optical head and
turn it clockwise so the front of the chamber moves to the left. The lower portion will loosen
from its bayonet fitting and can be removed.
7. The lower portion of the optical head consists of a translucent block. Clean all surfaces with
ethanol. Put a few drops of ethanol in the openings and remove any dust or debris by using
soft cotton swabs.
8. Repeat this procedure from both sides.
9. Use compressed air to remove any debris from the openings.
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User's manual – Ver. 1.55 July 2017 63/146