Endress+Hauser OUSAF46, Operating Instructions Manual

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OUSAF46 Maintenance
Hauser 19
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 (→  33).
• 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.
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CAUTION
Mercury lamp
UV radiation can damage the eyes!
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Protect your eyes with protective goggles suitable for UV radiation.
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Never look directly into a mercury lamp when it is switched on.