Switching Gases During a Dive

1. Start a single-gas, multi-gas, or closed-circuit rebreather (CCR) dive.
2. Select an option:
   • Press START, select Gas, and select a backup or decompression gas.

   NOTE: If necessary, you can select Add New and enter a new gas.

   • Dive until you reach the MOD/Deco PO2 threshold (Setting PO2 Thresholds).

   The device prompts you to switch to the gas with the highest percentage of oxygen.

   NOTE: The device does not switch gases for you automatically. You must select the gas.