Stray voltage

eros

New member
I stuck my hand in the tank tonight and got quite a zap. I narrowed it down the the Sedra 5000 pump running my skimmer. I put my hand back in about 10 minutes later, this time no shock. What should I do about this? I would like to avoid having to buy a new pump if possible as they are quite expensive. Thanks
Steve
 
Quite sure it's the pump. Only get shocked when skimmer is running. No shock if skimmer is off. I decided to take the pump out and take a look at the pump and I was in for another shock(sorry;)). The back cover was slightly lifted on one side, like it wasnt fully seated. So I carefully pryed it off. To my surprise it was quite easy. When I took the cover off I was greeted with this mess (I took some pics I will post later because Photobuckets site is down right now). Looks like the expoxy that was supposed to be insulating the motor. Whatever it is this stuff was all soggy and deteriorating. I've never looked inside of a pump before but I definitely didn't expect it to look like this. So I don't think there is any hope for this pump. Guess I will be skimmerless until the replacement arrives. Can you suggest where to purchase a new pump? Are the Oceanrunners better pump?(more durable? better performing?). I have read a little about those Sicce pumps that Octopus is using, are those any good? Would my skimmer perform well with one of those? Sorry for all the questions but I need to come to a decision on a pump ASAP for the sake of my livestock. Thanks for your replies, especially kau_cinta_ku for the fast reply in both of my threads.
 
anytime, thats what we are here for :D

I can't say much about diff. pumps, but I used to run an ASM skimmer with a sedra pump, and it kept overheating on me and making the impeller swell up to the point where it wouldn't run anymore. I am now running a reefmaina skimmer with the oceanrunner pump and can tell it is alot better than the sedra's IMO.

as for a place to buy you can try aquacave, they are decent.
http://www.aquacave.com/NeedleWheelWaterPumpsCatalog.aspx
 
Sorry, don't know about alternate pumps. I've been running my asm g4x with the sedra for a little over 3 years with no trouble but will moonitor it more closely now. Let me know what you find out in terms of an effective alternative.

Thanks
 
I don't think I wanna be the guinea pig on this one so I will probably just get another Sedra for now and maybe a new skimmer in the near future. I'll post a more specific question in the filtration forum and see what I can find out.
 
Here are the pictures of the pump with the back peice removed.
CIMG1184.jpg

CIMG1186.jpg

This stuff was completely wet and falling apart. Definitely not insulating which explains the shock I was getting.
 
wow that is bad, I have never seen it crumble like that.

one thing you could try though, remove all of the old stuff that you can and refil it with a marine epoxy. let it harden, set in a bucket of water and test with a volt meter. that is basically all that insulation is. or at least that is what it was on my quiet one pump.
 
<a href=showthread.php?s=&postid=13191231#post13191231 target=_blank>Originally posted</a> by cpony69
aren't you using a grounding probe???
No, I'm not even sure how to set one up. I've heard mixed things about it. I didn't know I had a problem until now. I think I will try the epoxy trick. Can I find the appropriate epoxy at home depot or the hardware store?
 
<a href=showthread.php?s=&postid=13191231#post13191231 target=_blank>Originally posted</a> by cpony69
aren't you using a grounding probe???
:) If he was without a gfci ,that stray voltage would have been stray current and likely have harmed his livestock.As it was he became the ground probe.
 
yes any hardware store should have the stuff. it may be a 2 part type.

again test with a volt meter, I don't want to see you get hurt if it don't work. :D
 
I'm gonna give the epoxy a shot today, thanks for the advice. Hopefully it works at least temporarily till I can figure out which new pump to get.
 
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