Time delay relay suggestions?

[bob haller]

lets hope given low initial flow you arent damaging the pumps motor....

[trader_4]

Well, it can't possibly damage the pump motor. Even them pump can't be damaged. It has some water flow right from the beginning. These pumps are self-priming, meaning they can start up without water. The seal is ceramic, so even with a little water flow for the first few minutes, nothing is going to happen. Same pump accidently was run for hours with no water at all and it worked fine after. When I did the tear down, the ceramic seal was still A-OK. to the pump.

[gfretwell]

As long as you are flowing some water that is true but if it truly runs dry, heat is the enemy. A good part of the motor cooling is down that shaft and the seal is depending 100% on the water. I just had to replace a melted pump housing because it ran dry for a day.

[The Daring Dufas]

I guess you may have misunderstood what I wrote. What you write is true but it's not what I was referring to. I used to build my own solid state motor controllers from scratch so I have a pretty good idea what will work and what will burn up because I've burned up a lot of stuff to learn what and what not to do. I call it on the job education. ^_^

TDD

[The Daring Dufas]

I spent years doing field modifications to all sorts of equipment and used ICM time delay relays because of the simplicity and reliability for assembling control system modifications. I used a lot of them working on HVAC systems to increase the life of compressors by preventing short cycling. If you have a Johnstone Supply anywhere near you, you can obtain ICM time delay relays, contactors and control relays there. WW Grainger should have all of that stuff to. ^_^

TDD

[Tekkie®]

The Daring Dufas posted for all of us...

And I know how to SNIP

Doesn't that just burn you up. Going down in flames? It's a scorcher alright. Watch the arc. I will relay the contacts.