Product review (2 stars): Blades too long?
Pump was way louder during draining than original pump (2003 machine). After 9 months of use (2016) impeller blades broke off axel (also top outer edges worn down 1mm). For second replacement (9/2017), used different vendor/product, but it looks identical. Suspect replacements are 1mm too long, so I trimmed impeller blades to match wear pattern on old blades. Seemed to work... 2017 pump drains without loud noises.