If your power inflator fails during a dive, you can continue the dive using the oral inflator to adjust your buoyancy. You may also want to use the oral inflator to save air as you inflate the BCD at the surface. To orally inflate the BCD:

1. Take a breath from your regulator, and remove it from your mouth. Remember to exhale a small stream of bubbles any time the 2nd stage is out of your mouth.
2. Place the power inflator's mouthpiece in your mouth.
3. Press the deflate/oral inflator button, and exhale into the power inflator.
4. Replace and clear the 2nd stage, and continue the process until you are neutrally buoyant.