Oxymax COS61
Maintenance
Hauser
23
7.1.2
Cleaning the optics
The optics only need to be cleaned if medium has penetrated through a defective fluorescence cap.
To clean it, proceed as follows:
1.
Unscrew the protection guard and fluorescence cap from the sensor head.
2.
Carefully clean the optical surface with a soft cloth until the buildup is fully removed.
3.
Clean the optics with drinking or distilled water.
4.
Clean the optics and screw on a new fluorescence cap.
NOTICE
Damages, scratches on the optical surface
Faulty measured values
►
Ensure that the optical surface is not scratched or damaged in any way.
7.2
Replacing wear and tear materials
7.2.1
Replacing the sealing ring
The sealing ring must be replaced if visibly damaged. For replacement, use only original sealing
rings.
7.2.2
Replacing the fluorescence cap
The typical operating life of a fluorescence cap is more than 2 years. The sensor checks whether the
cap is aging and issues a warning via the transmitter if the rate of aging reaches a specific value. The
sensor is still able to measure at this stage. However, it is advisable to change the cap as quickly as
possible.
Removing the old fluorescence cap
1.
Remove the sensor from the medium.
2.
Unscrew the protection guard.
3.
Clean the outside of the sensor.
4.
Unscrew the fluorescence cap.
5.
Clean and dry the optical surface if necessary.
Installing the new fluorescence cap
6.
Make sure that there are no dirt particles on the sealing surface.
7.
Carefully screw the fluorescence cap onto the sensor head
until the stop.
8.
Screw the protection guard back on.
After replacing the fluorescence cap, the sensor must be recalibrated. Then insert the sensor
into the medium and check that no alarm is displayed on the transmitter.
