Overflowing Wet Dry Filter

[viruzjk]

I CANT FIGURE OUT HOW TO GET MY WET DRY FILTER FROM OVERFLOWING WHEN I CUT THE POWER TO THE RETURN PUMP????

http://i17.photobucket.com/albums/b93/viruzjk/IMG_0115-1.jpg

[down and outman]

Drill a hole in the return line near the surface so your return line won't siphon back.

[Gary Majchrzak]

does water from the chiller back siphon to the sump when the pump is turned off?

<a href=showthread.php?s=&postid=12170646#post12170646 target=_blank>Originally posted</a> by down and outman
Drill a hole in the return line near the surface so your return line won't siphon back.
it looks like his diagram is indicating a check valve of some sort :confused:

[viruzjk]

I HAVEN'T FIGURED THAT OUT I BOUGHT THE WHOLE SET UP AND IT WAS ALLREADY PLUMBED. AND CAN YOU SHOW ME A PIC OF WHERE TO DRILL THE WHOLE THE RETURN WATER CANT PASS THAT PLASTIC PIECE I HAVE MARKED IN THE PIC

[viruzjk]

IVE NEVER USED A SUMP OR WET DRY BEFORE SO I AM CLUELESS WHEN IT COMES TO THE PLUMBING I DONT KNOW WHAT THE VALVES ARE FOR.

[Gary Majchrzak]

Is this exactly how the system is plumbed right now? Have you tried running the sump at a lower level and turning off power?

[seapug]

You need to lower the water level in the sump. There is no other foolproof way to prevent the flood other than making sure there is enough room in the sump to accomodate the backflow from the return when the pump is shut off. Keeping more water in the sump is not going to change the amount of evaporation that occurs. You have to topoff regardless and it should be done daily if not constantly with an auto top off system.

[viruzjk]

THE PLUMBING IS THE SAME. THE ONLY DIFFERENCE IS MY WATER LEVEL IS ALOT LOWER IN THE SUMP. I JUST DON'T WANT IT TO OVERFLOW AGAIN IT WAS A MESS THE FIRST TIME. IF I SEE IT ABOUT TO OVER FLOW AND I SWITCH IT BACK ON REALLY QUICK WILL IT BE FAST ENOUGH?

[viruzjk]

THANKS FOR THE ADVISE SEAPUG. DAILY TOP OFF'S :( MAYBE ILL LOOK INTO THE AUTO TOP OFF SYSTEM HOW MUCH DO THOSE RUN$$$$ IVE ALLREADY INVESTED SO MUCH :(

[seapug]

again, you need to reduce the water level in the sump to accomodate the back-siphon when the pump is cut off. If you've reduced the water level as low as you can and it's still not enough then you need to move your return nozzle closer to the surface. The water will continue to back-siphon until the return is above the water line. Check valves and holes in the return can work but are easily clogged and/or prone to failure.

And please, take off the caps lock. Writing in all caps comes off like you are yelling. No need to yell here.

[Kep]

This guy sure likes to yell.

There is an alternative way of preventing back siphoning (I don't trust those flapper valves). I implemented it in my tank a couple years ago.

I'm sure there is a name for the system, but basically, you have a loop on the return pump (water from sump to the display tank) that passes above the water level of the display tank and back down to the inlets. Just below the water line of the main tank, on this loop, you drill a small hole. When the back siphon begins, this small hole sucks in air and breaks the siphon. I still run the flapper valve, but at least I have a reassurance that I have added protection.

[Kep]

Also, shouldn't the check valve/flapper valve be mounted vertically to operate properly?