Because cleaning has been part of fiber maintenance for years, most people have their own approaches for cleaning end-faces. However, beware of bad habits. Many have developed in the industry over time. With an evolving base of knowledge, the industry has moved recently towards new best practices.
One common approach to cleaning end-faces is to blast them with canned air, either on a connector inside a port. Canned air is only effective on one type of contaminant: large dust particles. Canned air is ineffective not only on oils and residues but also on smaller, charged dust particles. Moreover, canned air will tend to blow large particles around inside ports rather than carefully remove them.
Traditionally, dry cleaning is proven to be only partially effective in eliminating contaminants from fiber end-face and connectors. The challenges had been that the dry cleaning materials are either not good enough to uplift the various types of dirt or greasy contaminants over fiber end-faces, or they actually introduce static to the fiber ferrule that attract dust. Technological advancements and better dry cleaning materials introduce a new class of fiber cleaning tools that are cost effective and efficient in cleaning more than 50% of contaminants from fiber. These tools become a perfect complement to the fiber wet cleaning solution to cover the cleaning needs in almost all situations and environments.
Use of solvent
Some contaminants, like greasy and sticky materials, are difficult to uplift without the use of a solvent. Solvents provide multiple benefits, the most important being their ability to dissolve dried contaminants that have adhered onto the end-face. In addition, solvents will envelop particles and debris to effectively lift them from the ferrule surface so that they can be carried away without damaging the end-face. Last, solvents will prevent a static charge from developing during cleaning with a dry wipe or reel that are not optimized for dry cleaning. There are many stories of end-faces becoming statically charged during solvent-free cleanings such that they were strongly attracting static-charged dust floating in the air. The developed charge can be so strong that static dust accumulates on the end-face during the short move from a microscope into port. Continue reading