Endress+Hauser OUSAF11, Руководство по эксплуатации

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Maintenance OUSAF11
18 Hauser
Maintenance checklist
• Replace lamp
The lamp is typically replaced after 8000 to 10 000 operating hours (→  26).
• Replace O-rings in contact with the medium
The replacement of O-rings in contact with the medium depends on the specific
requirements of the process.
Never re-use a used O-ring.
8.2 Clean sensor
Cleaning the sensor
If the sensor is dirty, this can influence the measurement results and even cause a
malfunction. Therefore the sensor must be cleaned regularly in order to guarantee reliable
measurement results. The frequency and intensity of the cleaning process depend on the
medium. Clean the sensor:
• before every calibration/adjustment/zero point adjustment
• before you send the sensor in for repair
Fouling Cleaning
Lime deposits
‣
Immerse the sensor in 1-5 % hydrochloric acid (for a few minutes).
Dirt particles on the optical windows
‣
Fold the cloth and wipe the cell.
NOTICE
Cleaning agent residue
Cleaning agent residue can affect the measurement.
‣
Rinse the sensor carefully with water after every cleaning.
8.3 Replace lamp
‣
Switch off the lamp at the transmitter using the software function.
‣
Allow the lamp to cool down (30 minutes).
1.
Release the cable gland and pull it over the cable to remove it from the sensor.