Question 297General Subjects - QMED70% to pass
Charring or glazing of the inner circumference of the packing rings in a centrifugal pump is caused by _______________.
AI Explanation
The correct answer is B) insufficient lubrication of the packing.
Charring or glazing of the inner circumference of the packing rings in a centrifugal pump is caused by insufficient lubrication of the packing. Proper lubrication is essential to prevent excessive friction and heat buildup, which can lead to the observed charring or glazing of the packing material. Underâ€'tightening the packing (A) or failure to seat the packing rings (C) may also contribute to the issue, but the primary cause is the lack of adequate lubrication. Packing ring rotation (D) is not the direct cause of the charring or glazing.
Related Questions
#295 Pitting in the suction areas of a centrifugal pump bronze impeller is usually caused by _______________.#296 A centrifugal pump may fail to deliver water when first started if the _______________.#298 Reduced capacity, accompanied by vibration and noise at the suction of a centrifugal pump, results from cavitation in the fluid being pumped. Cavitation describes the formation of _______________.#299 Which of the following valve arrangements permits the reciprocating pump liquid piston to take suction from the suction chamber, and simultaneously discharge through the discharge chamber during the up and down strokes? #300 The suction-force principle of operation is a typical characteristic of _______________.