Endress+Hauser OUSAF44, Руководство по эксплуатации

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OUSAF44 Maintenance
Hauser 23
8 Maintenance
Take all the necessary precautions in time to ensure the operational safety and reliability of
the entire measuring system.
NOTICE
Effects on process and process control!
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When carrying out any work on the system, bear in mind any potential impact this could
have on the process control system and the process itself.
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For your own safety, only use genuine accessories. With genuine parts, the function,
accuracy and reliability are also ensured after maintenance work.
NOTICE
Sensitive optical components
If you do not proceed with care, you can damage or severely dirty the optical components.
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Maintenance work may only be carried out by appropriately qualified staff.
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Use ethanol and a lint-free cloth which is suitable for cleaning lenses to clean all the
optical components.
8.1 Maintenance schedule
• Maintenance and servicing intervals are based on the individual application.
• Cleaning intervals depend on the medium.
Maintenance checklist
• Replace lamp
The lamp is typically replaced after 1000 to 3000 operating hours (→  38).
• Replace sensor window and seal
The window only needs to be replaced if it is damaged.
• 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 Replacing the hazardous area lamp
The disassembly and assembly process for the hazardous area lamp is the same as for the
non-hazardous area version.
Make sure you use the right spare parts kit.
8.3 Replacing the mercury lamp
L
WARNING
Dangerous voltage
Risk of serious or fatal injury from electric shock!
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Before performing any maintenance work on the lamp, remove all the cables and
disconnect the power supply to the sensor.
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Only replace the lamp in a current-free state.