I have a cast iron pump that is only two years old and when I went to use it
today it got warm but didn't ciculate any water. Is there a way to repair
the pump? I had one of these that lasted years in my old house why would
this one fail after such a short time?
Thanks for any help, Rich
I had the same issue with solar pump. Old one lasted a long time then I
replaced it and the new one crapped, fortunely for me with in the warranty
period. I replaced it with one with slightly more head pressure and never
had another problem. All new stuff is slightly less good than the stuff
from 10 years ago. I have made it practice to research and check the specs
on everything that I work on now days.
To my knowledge repair is not practical. Take it out of service and look at
the impeller. Is there anything in there that is a problem?
Air in the water can destroy a cast iron pump from corrosion and
cavitation. If the rotor is locked from corrosion, you can take it apart
to replace the rotor, but sometimes it's just easier to swap it out for
a new one. Make sure you have a Spiro-vent or similar de-airing fitting
in the lines.
Could be a lot of things. Seals, bearings, corrosion, impoper assembly,
something out of spec, etc. Grundfos makes very good p umps, but like any
manufactured product, they will eventually wear or brak or just be less than
perfect from the start.
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