Tunze 9011 Works great until I .....

S

saltwater808

New member
Shut the power off for maintenance. When I plug it back in the pump is only half working. I have to take the skimmer out pop the plate off reset it over the pump inlet then it will work again. The pump inlet is in the plate hole when I take it apart, It seems the pump is shifting in the mounting hole when the power is cut. Unit is in the sump. 6in of water.
Is there a certain way the pump body needs to be clocked? I notice the power cord is not directly by the power out hole at the bottom of the skimmer.

I plan to run the skimmer on the timer so hope to troubleshoot this issue.

Just for the record the skimmer has been kicking but! 100ml every other day or so. Tank is only 8 weeks old. 3 small fish and a fist full of hermits.

Thanks
 
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The cord off the pump should be as close to the exit slot on the skimmer as possible. How old is the skimmer?
 
The date is more what I am looking for than the condition. If this is a very early 9011 from 2010, we had some pumps that would periodically spin backwards and this resulted in a large drop in flow/bubbles.
 
There might be a date code stamped on the pump face under the impeller housing where the impeller sits. Some of the earliest ones have no date code.
 
I clocked the the housing so the cord was near the exit hole on the pump. It wouldnt produce bubbles. It struggled to maintain water out of the return. Water drop just under the lip then poured out then dropped below the lip again. I clocked the pump housing back to where it was earlier it worked but after I cut the power it went back to the above mentioned.

How important is that orange ring for sealing. It looks good but seems to create some sort of air leak somewhere? Any ideas?
 
It is very hard to say without having the pump here to test and knowing more about the age and condition. I suspect the pump is an older one that is spinning backwards. Without the oring their is a substantial loss of pressure where the impeller housing meets the motor. I think it would be best to send in the pump for testing/repair.
 
That sounds like a good idea. I forgot to include a photo of the pumps info. I could not find a date. The LG o ring is intact but not sure of its holding up.
 

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The date is on the surface the oring is on, the big flat plate with the impeller in the middle and it is actually pressed into the plastic.

If you send it in, just include your return address and phone number in the box-

Tunze USA
305 Victor St
Austin, TX 78753
 
rvitko said:
The date is on the surface the oring is on, the big flat plate with the impeller in the middle and it is actually pressed into the plastic.

If you send it in, just include your return address and phone number in the box-

Tunze USA
305 Victor St
Austin, TX 78753
Click to expand...

I looked at that spot yesterday ill look again. I will send it in. Any idea on cost as for repair vs. replace?
 
Repair in the worst case will be a new motor block, about $100, buying a new pump outright would be $165 approx.
 
Your impeller was too large, it was the 50Hz version, I swapped it for the correct US one and will ship back tomorrow.
 
Hi Roger,

I got the pump in today. So much more efficient! I cant believe how much different the unit runs. Great service too! Aloha!
 
If you could post a picture of your impeller, we may be able to diagnose it and just send the part.
 
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