Endress+Hauser Viomax CAS51D, Operating Instructions Manual

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Viomax CAS51D Maintenance
Hauser 31
9 Maintenance
You must perform maintenance tasks at regular intervals.
We recommend setting the maintenance times in advance in an operations journal or log.
The maintenance cycle primarily depends on the following:
• The system
• The installation conditions
• The medium in which measurement takes place
L
CAUTION
Risk of injury from acids or medium, damage to clothing and equipment
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Switch off the cleaning unit before removing the sensor from the medium.
‣
Wear protective goggles and safety gloves.
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Clean away splashes on clothes and other objects.
9.1 Maintenance intervals
The sensor requires very little maintenance, particularly if a cleaning unit is connected.
Nevertheless, maintenance must be performed at regular intervals. Schedule maintenance
times in advance in an operations journal or log.
Monthly: Visual check, clean sensor if necessary.
Cleaning intervals depend on the medium.
Every two years: Replace optical filters (manufacturer service team)
Every four years: Replace strobe lamp (manufacturer service team)
9.2 Cleaning the sensor
Sensor fouling can affect the measurement results and even cause a malfunction.
The sensor must be cleaned regularly to ensure reliable measurement results. The
frequency and intensity of the cleaning process depend on the medium.
Clean the sensor:
• As specified in the maintenance schedule
• Before every calibration
• before returning it for repairs.
Type of soiling Cleaning measure
Lime deposits
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Immerse the sensor in 1 to 5% hydrochloric acid (for several minutes).
Dirt particles on the optics
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Clean the optics with a cleaning cloth.
Buildup on the optics
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Wet a cotton bud with 1 to 5% hydrochloric acid and use it to clean the optics.
After cleaning:
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Rinse the sensor thoroughly with water.
9.3 Maintenance of optical filters and strobe lamp
This work must be performed only by the manufacturer service team. Contact your Sales
Center.→  32
Replacing the optical filter and strobe lamp also entails recalibrating and readjusting
the sensor in the factory.