Pond pump not working

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23 Aug 2016 23:23 #1 by nomad (pat murphy)
Went out the back the other morning and things at the pond was very quiet,checked it out and found no water coming out of the filter box.It was being fed by an Oase Filtral 9000.Stripped the oase back a bit and ran the power to it and saw that the impeller is still going but cant figure whats going on,its been running about 2 odd years with no probems..

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24 Aug 2016 06:27 - 24 Aug 2016 06:29 #2 by robert (robert carter)
Hi Nomad thats an odd one lmpellar running but no output , is the pump in a cage and is the cage blocked with algae or is there a blockage in the pipework to the filter , oase pumps are normally very good , expensive but good , my current pump in my pond is a hoselock aquaforce 8000 it is about 6 years old now and never missed a beat . Like the oase pumps they are expensive but only 90 watt and powerful. Ian in Aquatic village is an oase agent so he might be able to help . I would have a spare pump you could borrow if it would be of any help . Maybe if you ran an airstone in the filter it might help keep the filter bacteria alive until you get it sorted . Robert
Last edit: 24 Aug 2016 06:29 by robert (robert carter). Reason: added sentance

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24 Aug 2016 14:37 #3 by nomad (pat murphy)
Thanks for your kind offer for the lend of a pump Robert but luckily bought a brand new bladon mini pond pump a good while ago as a back if this situation would arise,phew.Connected the replacement pump up and running fine so hose to the filter box is grand,took the casing of the oase pump and was running it in a barrel of water and I can see the impellor spinning but what I forgot to mention is that theres a strange low rattling sound happening too.Tried to get the impellor casing off but it wont budge,feels as if any more pressure I would apply to that hard plastic component would break it,the joys of fishkeeping...

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24 Aug 2016 15:59 - 24 Aug 2016 16:06 #4 by robert (robert carter)
Sounds as though the impeller sharft is broken or the shaft locating bearing or rubbers are gone , both are parts that are replacable. Try www.gardensite . Uk they are osae parts distributors , there site will give breakdown pictures of their pumps which might help you pinpoint the problem . They seems to carry a very large range of spares , i have in the past got parts from them . Robert
Last edit: 24 Aug 2016 16:06 by robert (robert carter). Reason: added sentance

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24 Aug 2016 18:31 #5 by nomad (pat murphy)
Thanks for the link will have a look in a bit.I took the pump out of the shed and had a look again,the bottom rubber on the shaft looks fine and nice tight fitting,the shaft looks perfect as well.The impeller looks like brand new and the part where the impeller and shaft go wasn't guncked up,it was really clean so filter sponges doing their job.Will have to stick a plug on the lead and see if anything happens after me messing around with it today,cheers....

p.s just had a look at that site and nothing really for the 9000,some service kits and impellers for the smaller models though.

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24 Aug 2016 20:51 #6 by robert (robert carter)
Hi exactly what make and model is the pump and i will have a dig around the nett to see if i can find anything from the pond sites i have used

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24 Aug 2016 21:22 #7 by nomad (pat murphy)
Hi Robert its an oase filtral 9000 and cost quite a bit for my budget situation and got it at a very good price so would be great to get this bird up and running again : )

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25 Aug 2016 15:51 #8 by robert (robert carter)
Watergardening direct uk . Show a breakdown picture of this pump and list spare parts . I didnt realise till now that this is a combined pump , filter and uv , hence the 224 sterling price . I have dealt with this company in the past without any complaint .

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25 Aug 2016 19:10 #9 by nomad (pat murphy)
Cheers Robert that websites great with the breakdown diagrams and filter parts.I mainly use the oase for the pump running water up to an above ground minipond filter box and use it as the first line of defence as a mechanical filter.The minipond filter has a UV in it which I use instead of the oase one and on top of the biological filter media and sponges in the filter I have a thick bed of filter wool catching any dirt that's pumped up from the pump.You wouldn't believe how much dirt it catches that comes up in the water hose from the pump..

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25 Aug 2016 19:26 #10 by robert (robert carter)
I know it never ceases to amaze me where all the muck comes from in a pond . My new pressure filter seems to be settling in now this morning ammonia and nitrite level were near normal , so reckon another couple of weeks before the k2 media kicks in . Have been adding a weekly dose of a pond mature bacteria just to get it going

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25 Aug 2016 19:39 #11 by JohnH (John)
Replied by JohnH (John) on topic Pond pump not working
Since the topic has veered away from Ger's original Pond thread the last posts have been moved to a topic of their own.
If there are any preferences for the new name it can easily be changed.

John

Location:
N. Tipp

We're just two lost souls swimming in a fish bowl - year after year.


ITFS member.



It's a long way to Tipperary.

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25 Aug 2016 19:43 #12 by nomad (pat murphy)
Sorry about that John,was just thinking the same after posting my last post,back to Gers pond project,wondering if any updates are coming soon ....

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25 Aug 2016 21:13 #13 by robert (robert carter)
Sorry John seem to be making a habit of this recently

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25 Aug 2016 21:23 #14 by JohnH (John)
Replied by JohnH (John) on topic Pond pump not working
Just posted by way of an explanation as to why the thread had been split, not being reproachful so no need for apologies.

John

Location:
N. Tipp

We're just two lost souls swimming in a fish bowl - year after year.


ITFS member.



It's a long way to Tipperary.

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26 Aug 2016 09:24 #15 by paulv (paul vickers)
It is possible with some filters/pumps after dismantling for cleaning to put the cover over the impeller back 180degrees wrong way so the water flow goes wrong way. Worth checking before you replace it.

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29 Aug 2016 19:06 #16 by nomad (pat murphy)
Hi Paul I had another look at the pump today and any way the impeller cover was put back was the same outcome...I took off the uv housing and noticed that the main oring seal wasn't sitting right,i thought maybe that was the problem because water was coming out of there so that it could make the pump lose pressure.Tried the pump again and no change,just a spinning impeller making a rattling noise,had a look at the impeller again and thought that there was a bit more movement than what you would expect.Found a few bits of tiny grit in the impeller chamber that had got through the filter sponge so wondering did that damage the impeller so causing the rattling sound..




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29 Aug 2016 20:03 #17 by robert (robert carter)
This is a bit of a mistory, if the impeller is ok and the shaft isnt worn the wear must be in the rubber bushes each end . Therefore the impeller is rattling against the side housing making the noise , but would have though you would have got some output be it reduced from the pump . If you power it up can you see the impeller rotating , and if so is it running smoothly or vibrating around .Robert

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29 Aug 2016 20:53 #18 by nomad (pat murphy)
Hi Robert the last photo shows the gap of around 1mm excess room when held to the side,then when you hold the impeller theres that movement like too much.Iwas thinking with that gap if the impeller has worn down some so with excess unbalanced movement that's whats making the rattling when the impellor fins are hitting the side wall of the impeller housing.The rubbers are tight fitting so sound and the impeller spins fast when its powered up but could fade to go a bit slower at times for about a second,have postioned the pump inlet where the impeller sits under a running tap and it runs out of the outlet no probs so not blocked,bloody mystery.

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29 Aug 2016 21:39 #19 by robert (robert carter)
Hi ,ok if it was me i would replace the impellar complete with shaft . You could try seahorse they seems to carry a good range of impellers ,but make sure you take the old one down with you

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29 Aug 2016 21:45 #20 by robert (robert carter)
Try this company Aquatic-2u 00441473730520 their ebay shop lists quite a few oase impellers would be worth a call

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30 Aug 2016 12:56 #21 by Jonlate (Jon Late)
I had this happen on one of my tetratec filters. I know it's a different pump but on the end of the impeller shaft there was little rubber bungs to keep it centered into the holes on the casing and the cap.
Once one of the fell off while I was cleaning and I didn't notice when I rebuilt it.
This made a rattling noise and reduced pressure, so I took it apart again, noticed it was missing, found it, and it worked great again.
So.....should your impeller shaft have these on each end? Have you ever noticed them before?
Anyway just my story and fix.

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30 Aug 2016 19:42 #22 by nomad (pat murphy)
Jonlate thanks for your imput,,there are 2 black bungs 1 on each end and a tight fit.I have even put a bung on one end without the impellor on and pushed the shaft and bung down into its seating and then put on the impeller,then theres another black rubber and a small metal washer to go on before the end bung.Have had a similar problem like you mentioned with my external filter when after maintenance would make that rattling sound and with some tilting motion would rectify itself. I think that happens when theres air around the pump head where the impeller is and sounds like its airlocked until its completely full of water...

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30 Aug 2016 19:45 #23 by robert (robert carter)
Hi Ger , when i think about it the only moving part is the impeller so it has to be the problem , replace the impeller

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