After rigging, the eductor is ______ in the flooded area.

After rigging, the eductor is ______ in the flooded area.

• A. RAISED
• B. LOWERED
• C. HINGED
• D. REMOVED

Answer: (B)

An eductor creates suction by using a high-velocity discharge flow to pull in surrounding water, so its intake must be submerged to work properly. In a flooded space, placing the eductor lower puts the suction opening below the water surface, allowing it to draw water from the bottom and around obstacles rather than sucking in air. This ensures continuous, effective pumping. If you raised it, air would be drawn instead of water and the flow would drop or stop. Lowering it after rigging is the correct practice because it keeps the intake submerged and ready to entrain the flooded water.

An eductor creates suction by using a high-velocity discharge flow to pull in surrounding water, so its intake must be submerged to work properly. In a flooded space, placing the eductor lower puts the suction opening below the water surface, allowing it to draw water from the bottom and around obstacles rather than sucking in air. This ensures continuous, effective pumping. If you raised it, air would be drawn instead of water and the flow would drop or stop. Lowering it after rigging is the correct practice because it keeps the intake submerged and ready to entrain the flooded water.