EXFO FTB-800 Series for FTB-1 - Manual (Page 508)

Maintenance
498 FTB-700G/800 Series
Cleaning LC Connectors
Cleaning LC Connectors
Under normal circumstances the cleaning of the LC connector is not
required. However if the connector shows signs of debris or
contamination, cleaning may be required.
To clean a LC/SC/MPO-24 connector
1. Use a clean dry air (CDA) or a air gun to blow out the dust or
contamination.
2. Re-inspect the connector.
3. If the connector is still not clean, use a commercial cleaner
recommended by the SFP/SFP+ manufacturer.
Note: Refer to the transceiver manufacturer for more detailed cleaning
recommendations and instructions.