Swift Operating Instructions
Page 9
Doc 57025-01 Rev G
Purge Air from regulator when not in use
We recommend purging the air from the regulator when the system is not in use. This extends
the battery life of the transmitter (as it will continue transmitting any time there is air pressure
in the regulator system), as well as lowering the risk that a diver might enter the water with the
air pressure turned off. Please ensure the air is turned back on before donning the gear.
CHECK THAT YOUR TANK VALVE IS OPEN
Always take a few breaths from your regulator or purge your regulator’s second stage while
monitoring your tank pressure for a full 10-15 seconds prior to entering the water to ensure your
tank valve is turned on.
If the first stage regulator is charged but the tank valve has been closed, the breathing gas available
to the diver will decrease rapidly and within a few breaths the diver will face an “out of air“
situation. Unlike an analog gauge, the air pressure reported on the dive computer will only update
every 5 seconds, so the pressure must be monitored for longer than that (we suggest 10-15
seconds) to ensure the tank valve is open.
Including a regulator purge test followed by 10-15 seconds of air pressure monitoring before
entering the water as part of your pre-dive safety check is a good way to mitigate this risk.
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