Finding pin holes in a closed loop system

loveless · #1 02-25-2009, 07:19 PM

Quote:

Originally Posted by sphelps

Your pipe size is too small for what you're doing, by my rough calculations you've got over 6 feet of head pressure being created in that intake plumbing. If you jump up to 1.5" you're only adding about 1 foot, 2" you adding less than 1/2 a foot.

That's assuming your pump is wide open on the other end with of course it is not but to me the obvious solution is to swap out the plumbing for at least 1.5" or even 2". This will mean you'll have to re-drill that sump hole.

Im agree, first thing id do is see about upgrading you intake plumbing to something bigger. Even a slight restriction will cause cavitation.

my2rotties · #2 02-25-2009, 07:35 PM

Would it not start failing when it was installed? It has been working fine until two days ago?

Quote:

Originally Posted by loveless

Im agree, first thing id do is see about upgrading you intake plumbing to something bigger. Even a slight restriction will cause cavitation.

Delphinus · #3 02-25-2009, 07:45 PM

There's also no strainer on the bulkhead - I wonder if something's been pulled into the pipe. Have you checked the line to see if it's clear?

Also, how hot does the pump run?

24storm · #4 02-25-2009, 07:48 PM

Quote:

Originally Posted by Delphinus

There's also no strainer on the bulkhead - I wonder if something's been pulled into the pipe. Have you checked the line to see if it's clear?

Also, how hot does the pump run?

Same questions i asked. She tells me the pump is cool to the touch but it does have a little noise coming from it. My guess is something has been sucked into the pump and it need to be inspected. I think Frank is gonna take it apart when he gets home.

my2rotties · #5 02-25-2009, 07:49 PM

The pump is cold. I don't know what a strainer is? I am pretty sure there was never one there or Frank would have looked. Feeling like a girlie girl at the moment since I don't know.

Quote:

Originally Posted by Delphinus

There's also no strainer on the bulkhead - I wonder if something's been pulled into the pipe. Have you checked the line to see if it's clear?

Also, how hot does the pump run?

JDigital · #6 02-25-2009, 08:11 PM

In the back right corner of my tank is where my C/L intake is, the black thing coming out of the bulkhead is a strainer. Similar to a spagetti strainer. Keeps large debris from getting sucked in. I have modified it since this picture, but if gives you an idea.

my2rotties · #7 02-25-2009, 09:30 PM

Hubby didn't take it apart like I thought he did... prob too early and he played around down there, so I would get off his back

. I have a reason to suspect there may just be a Gorilla crab in the pump. I was going to take it apart myself and I thought of Tony's post in the lunge and just decided to leave it be... The strainer will be going back onto it tonight. We took it off since we have filter socks and I forgot about the crab that is living in the sump.