Experts, please come in
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What type of pump is this? The motor bearing is now broken and has been replaced with a new one. The pump shaft should be lowered now. How do I adjust the vertical alignment of the pump shaft when reinstalling it?
Multi-stage pump: It’s better to lift the pump shaft upward
There should be a nut to secure the bearing at the top, right? First, measure the value when the shaft is at the bottom, then measure it again when the shaft is at the top; take the average of these two values and tighten the nut accordingly. In this way, the impeller will be in the center position of the guide vanes.