Complex sentence: An arbitrator may recuse from any case, or from any aspect of a case, with or without explanation and is expected to do so where they have a significant conflict of interest.
Split into simpler sentences: An arbitrator may recuse from any case, or from any aspect of a case, with or without explanation. Arbitrators are expected to recuse from any case, or any aspect of a case, in which they have a significant conflict of interest.