TSI Quest EVM-7 - Figure 7-8: Cleaning the Optical Engine

Optical Engine: Maintenance and Cleaning
Cleaning PID Sensor
EVM Series User Manual
115
5. For the photodiode (positioned on the bottom of the optical engine), gently wipe around the bottom
of the optical engine using a clean cotton swab/cotton ball.
Figure 7-8: Cleaning the optical engine
6. Place the spherical mirror back over the optical engine. Gently push it into the cavity of the
optical engine.
 NOTE: If you loosened the D-ring and screws, ensure the flat side of the D-ring is facing the
metal ring as you place it back into place. If you removed the screws and the D-ring,
this will not apply.
7. Tighten down the two screws and D-rings with the Phillips screwdriver.
Outer cavity of optical
engine
Photodiode