The permanent (fold-away) mouthpiece comes standard with the purchase of your Lifeguard unit. This mouthpiece is designed to fold-away into the Lifeguard unit when not in use. It is intended to be used for self-testing or repeated testing of the same subject. If testing with multiple subjects on the Lifeguard you should be attaching the disposable mouthpieces to keep from cross contaminating between tests.
The permanent mouthpiece is designed to stay attached to the unit under normal use, however it can be removed if it needs to be cleaned. You normally do not need to replace the permanent mouthpiece unless it has become damaged and will not function properly. To remove the permanent (fold-away) mouthpiece gently pull up and away from the unit as shown in the instructions below. Do not bend of force the mouthpiece over the edge of the unit as this is incorrect and may break the part. Clean with warm water and dish soap and let thoroughly dry before re-attaching to your unit. If your permanent mouthpiece has become damaged or lost you may order a replacement part above.