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23. One of the consequences in continuing to operate a centrifugal bilge pump with the discharge valve closed, is that the _______.
Operating a centrifugal bilge pump with the discharge valve closed traps liquid, converting energy into heat and causing the pump to overheat. This occurs because the impeller continues to impart energy to the trapped liquid, raising the temperature of the pump casing, seals, and bearings, while the motor load is typically lowest at shutoff.
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