A CQU-7/P blower failure is indicated to the wearer by?

The indication of a CQU-7/P blower failure is represented by the loss of lens de-mist and increased breathing resistance. This is because the blower unit is designed to provide airflow for both lens clearing and breathing facilitation. When the blower is functioning properly, it ensures that the airflow maintains visibility by preventing condensation on the lens (de-misting) and also allows for easier inhalation and exhalation.

Once the blower fails, the user would experience a noticeable reduction in airflow, leading to misting on the lens, which obstructs visibility. Additionally, without adequate airflow, the system would create increased resistance when the individual attempts to breathe, making it harder to draw air into the lungs. These physical changes are direct indicators of a blower malfunction, signaling the wearer to take immediate action to assess and address the equipment issue.

The other options, while related to equipment operation, do not properly indicate a blower failure in the context of the CQU-7/P system. The CQU-7/P design intentionally consents more user-driven mechanical feedback rather than electronic alerts or alarms.