Alkeria NECTA Series - Impurities; Sensor Cleaning; Using Compressed Air; After Cleaning Procedure

3. Hardware Description 42
3.7.4 Impurities
Before cleaning any parts, it is crucial to understand where impurities are located. You can distinguish
particles on the lensor on the sensor by looking at live images on your player. To help identifying any im-
purity in the optical path, it is recommended to set the smallest aperture by rotating the lens dial (larger
values correspond to small apertures). Point the camera to a homogeneous bright target to highlight
possible impurities artifacts. Impurities on the sensor appear as dark well-focused spots that remain
still while you move the camera respect to the subject . Dust on the lens looks blurred and rotates to-
gether with the lens.
3.7.5 Sensor cleaning
Installing the camera according to the recommended procedures makes unlikely sensor contamination.
Warning
The sensor protection glass cannot be accessed anyhow without opening the
camera housing. Doing it by yourself will void the camera warranty.
If you think your camera sensor needs to be cleaned, contact rma@alkeria.com to arrange the camera
return procedure (refer to Section 10.1).
3.7.6 Using compressed air
Alkeria SRL does not recommend cleaning methods involving compressed air. This kind of procedure
may lead to various damage.
• High pressure air ow may push dust into the camera instead of removing it. Optical components
may be permanently damaged and the sensor surface may be contaminated.
• Non-optical grade compressing systems may release oil vapor or moisture into the airow. This
contamination may damage the sensor or the camera and it could be very difcult to remove even
for a trained operator.
If compressed air is used (never exceed 4 bar) you should choose optic-approved air compressor with
anti-static ionizer and adopt lters to remove moisture and oil from the airow.
3.7.7 After cleaning procedure
Risk of electric shock
Before reconnecting the plugs, be sure that cleaning materials have evapo-
rated.
If any liquid has penetrated the camera housing, contact Alkeria SRL before
plugging any connector (see Section 10.1).