Endress+Hauser OXY5500 - Appendix B: Maintenance and Troubleshooting; Optical Output; Cleaning the Instrument; Temperature Probe Lifespan

OXY5500 Gas Analyzer Operating Instructions
Endress+Hauser 73
8 Appendix B: Maintenance and troubleshooting
The OXY5500 is a maintenance-free instrument, although some components may need cleaning or replacement.
This chapter contains instruction for cleaning, replacement, and general troubleshooting information.
8.1 Optical output
The SMA connector is a high precision optical component. For optimal performance, keep it dry and clean. Always
use the rubber cap to close the output when not in use.
8.2 Cleaning the instrument
The housing should be cleaned only with a moist cloth to avoid electro-static discharge.
8.2.1 SMA-fiber connector
The SMA-fiber connector of the sensor can be cleaned only with a lint-free cloth. The sensor tip may be rinsed only
with distilled water or ethanol.
 Never use benzene, acetone, isopropyl alcohol, or other organic solvents to clean the sensor tip.
8.2.2 Oxygen probe
The sensor tip can be cleaned as needed. Use caution when using this cleaning procedure to avoid removing the
protective coating and causing possible damage.
Tools and materials
• Ethanol (or equivalent)
• Clean container
• Lint-free wipes
 This procedure applies to the OP-3, OP-6, and OP-9 probes.
 Never use benzene, acetone, isopropyl alcohol, or other organic solvents to clean the sensor tip.
8.2.3 Cleaning the oxygen probe
1. Remove the probe from the analyzer. Refer to Removing the oxygen probe → .
2. Pour enough ethanol into a clean container to cover the probe tip when submerged.
3. Submerge probe tip into container with ethanol.
Leave the probe tip submerged for 5 to 30 minutes depending on amount of visible contaminant.
4. Remove probe from container.
5. Place lint-free wipe on flat surface and gently tap the probe tip against the wipe to remove excess liquid and any
contaminant residue.
Repeat steps 3 to 5 if contaminant is still visible on the probe tip.
6. Replace oxygen probe in the analyzer. Refer to Installing the new oxygen probe → .
7. Recalibrate analyzer. Refer to Calibrating the analyzer → .
8.3 Temperature probe lifespan
The temperature probe is estimated to last as long as the analyzer itself, therefore does not require replacement.
8.4 Fuse replacement
Use the following instructions to replace a fuse. Refer to Figure 2 for the fuse location.