PDA

View Full Version : any Ya' Old Salts still here?


T Man
03/25/2007, 07:03 AM
Is there a way that I can have my battery back up air pumps come on ONLY if there is a power outage? Some sort of solenoid switch? wired to the switches on the battery pumps? and when the power comes back on, the pumps shut off. Any thoughts? TinMan

GreshamH
03/26/2007, 01:58 AM
Use a NC relay (normally closed). When the power is off, the relay will allow power to go thru it. Use a relay that can handle both AC (for the coil) and DC for the control.

T Man
03/26/2007, 02:03 AM
Thanks Gresham. I will do that. TinMan

easttn
03/30/2007, 05:32 PM
Alright Mr. G, I want pics and progress on the original thread. :D I've just installed a system with 2-226's and 10 RTD modules all daisy chained... to bad its not on a NaClH2O$sump. :(

Just red-neckin, shoot a post.

Tinman - GH is right on, AC on the coil and DC on the contacts.