Does the Sentinel take a long time to maintain?
Yes and No. Many rebreather sport divers, including Sentinel divers, find they spend noticeably more time on equipment compared to open-circuit because the rebreather diver must always be careful and disciplined about maintenance. If you have been habitually careful with your open-circuit dive equipment and treat your equipment with respect, as an experienced Sentinel sport diver you will spend only slightly more time with your Sentinel maintenance than you did with open-circuit. In multi-dive days and multi-day diving, because the Sentinel rebreather needs very little attention between each dive in a series, considerably less total time may be spent on setup and maintenance than with open-circuit.
