Equipment failsafe howto?

[cephx]

In the next couple weeks I'll be starting a new 500G build in my home, which will include approximately another 300 gallon capacity in my basement for the sump.

My chief concern is the return - what's the best way to have a second pump hooked up as an automatic failsafe should the primary fail?

 

[jduck]

You could always just run dual return pumps. Should one fail you would would still have flow into display.

 

[kschweer]

Here's a good example of how you could do it.

100 gallon sump

Been a little bit of a busy day, had to do a complete brake job on my Dad's truck, than a co-worker called about replacing a turn signal switch, and was finally able to finish a few thing in the room... it will be worth it in the end!

Return pumps laid out and mounted.

Added these rubber feet as part of the isolation, will add 4 Sound Dampening Pad from BRS under plywood also.

Connected... used 45 degree coupling as much as I could...

Had to use the heat gun on the PVC from the bulkhead as the stock tank is at a bit of a angle.

will add a slotted piece of PVC to pull right from the bottom.

only one pump will run at a time, other is a cold standby.

Maybe @143MPCo will chime in with more
Details.

 

[143MPCo]

My chief concern is the return - what's the best way to have a second pump hooked up as an automatic failsafe should the primary fail?

...I have a 2nd pump but, it's not an "automatic" cut-over, more of a cold-standby that I can turn on manually or remotely if one fails... you can see from the attached images above how I set it up... I'm testing a float switch program via my apex to turn on the standby... the issue is I need a need a pair of motorized PVC gate valve that can open and closed with logic provided by the apex programming.

This is what it looks like: