Anthony W
New Member
Yesterday I replaced our 30 year old pressure tank. I figure our pump probably isn't far behind, so I thought I would start doing my research now.
Our current pump is a Grundfos 5S05-13, 1/2 HP, 230V. I placed it about 60' down the well when I originally installed it back in 1991.
According to the well report from 1987, the well is 6" round, 97 foot deep, with a static level of 35 feet. Bailer test of 5 GPM with a 39 foot draw down after one hour.
I have a new 52 gallon pressure tank with a 30/50 switch.
I would like another Grundfos pump, though I would prefer to get a 120V pump so it would be easier to connect to a generator during a power outage. It would also be nice to eliminate the external control box.
I've looked at the Grundfos 5SQ05-180-115V which seems comparable, but I don't really understand all the pump curves, head, etc. to know which size pump to select.
When replacing the pump can I reuse the existing black poly pipe and wiring, or should I plan to replace those too?
Will I be able to manually lift the pump out of the well now that it has water filling 60' of 1" pipe?
Our current well seal is made of cast iron and is very rusty. Most of the new ones I see are made of plastic. Are they reliable?
Finally, would it be a bad idea to buy a pump and have it sitting around on a shelf until the old pump fails? Or would it be better to proactively replace the 30 year old pump? We've never had a problem with the pump, but ours is 30 years old and I don't know how long they typically last. I'm guessing it will probably just fail with no warning signs it's going bad?
Our current pump is a Grundfos 5S05-13, 1/2 HP, 230V. I placed it about 60' down the well when I originally installed it back in 1991.
According to the well report from 1987, the well is 6" round, 97 foot deep, with a static level of 35 feet. Bailer test of 5 GPM with a 39 foot draw down after one hour.
I have a new 52 gallon pressure tank with a 30/50 switch.
I would like another Grundfos pump, though I would prefer to get a 120V pump so it would be easier to connect to a generator during a power outage. It would also be nice to eliminate the external control box.
I've looked at the Grundfos 5SQ05-180-115V which seems comparable, but I don't really understand all the pump curves, head, etc. to know which size pump to select.
When replacing the pump can I reuse the existing black poly pipe and wiring, or should I plan to replace those too?
Will I be able to manually lift the pump out of the well now that it has water filling 60' of 1" pipe?
Our current well seal is made of cast iron and is very rusty. Most of the new ones I see are made of plastic. Are they reliable?
Finally, would it be a bad idea to buy a pump and have it sitting around on a shelf until the old pump fails? Or would it be better to proactively replace the 30 year old pump? We've never had a problem with the pump, but ours is 30 years old and I don't know how long they typically last. I'm guessing it will probably just fail with no warning signs it's going bad?