Question 374General Subjects - Assistant Engineer70% to pass
When installing a mechanical shaft seal on a pump, it is important to _______________.
AI Explanation
The correct answer is A) ensure that correct spring pressure is applied to the seating faces.
When installing a mechanical shaft seal, it is critical to apply the correct spring pressure to the seating faces. This ensures proper sealing between the stationary and rotating seal components, preventing leaks. The spring pressure must be carefully adjusted to the manufacturer's specifications to allow the seal to function as intended.
The other options are incorrect because: B) polishing the seating faces is generally not necessary for proper seal installation, C) running the pump "dry" could damage the seal, and D) making final adjustments with the pump running may not be possible or recommended, as the seal should be properly installed and adjusted before operation.
Related Questions
#372 What should be done if localized scoring is discovered on a pump shaft sleeve during routine maintenance inspection? #373 When repacking a stuffing box fitted with a lantern ring, which of the following precautions should be observed? #375 A centrifugal pump gradually develops insufficient discharge pressure. What corrective action is required? #376 A pump shaft that is bent or distorted should normally be _______________.#377 When renewing spiral packing in a centrifugal pump stuffing box, after the packing is firmly seated, the packing gland nuts should be _______________.