How do you align a main drainage eductor?

Aligning a main drainage eductor involves a specific sequence of steps to ensure proper operation while effectively removing water from the area of concern. The selected answer emphasizes the crucial components involved in this process.

Discharge refers to directing the water being pump out to a safe area. The firemain is part of the system that provides the necessary pressure and volume needed to operate the eductor efficiently. Verifying vacuum is essential, as it confirms that the eductor is creating enough negative pressure to lift the water from the bilge or affected area into the discharge line. Lastly, the reference to suction indicates that the eductor must be properly drawing in the fluid that needs to be removed.

By following the steps outlined in the correct choice, personnel ensure that the eductor functions effectively and safely. It encapsulates the comprehensive approach required to align the system for optimal performance during damage control operations.