Third central heating pump in 5 years!
- Thread starter Glenbirnie
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I wouldn't call that slightly above horizontal. Ideally the shaft should be exactly horizontal, but one or two degrees above is better than one or two degrees below.
Also the electrical connection box should be on the top, away from any possible water leak. The pump will have to be "split" in two and the front half rotated 180° so the direction of flow stays the same.
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Perfect I get all that and have watched a video on u tube on how to split this exact pump so I should manage that.
If I slacken the larger pump valve nuts will I be able to rotate the whole pump or will I have to slacken the compression fittings to the 15mm pipe? Hopefully not so I dont have to drain the system?
Will the pump need to be rotated 180 degrees? If the body is left as is between the pump valves is this not what determines flow direction? The impeller is simply rotating in the same direction whatever way you orient the electrical connection. I could have the electrical box to the left couldnt I?
If I slacken the larger pump valve nuts will I be able to rotate the whole pump or will I have to slacken the compression fittings to the 15mm pipe? Hopefully not so I dont have to drain the system?
Will the pump need to be rotated 180 degrees? If the body is left as is between the pump valves is this not what determines flow direction? The impeller is simply rotating in the same direction whatever way you orient the electrical connection. I could have the electrical box to the left couldnt I?
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Ok I will take Hailshams advice though and put it to the top for good practice. Im just trying to understand all this.
What about rotating it to the horizontal then, should slackening the pump valve connections allow me to do this without drainging the system. Gate valves are only 3 months old?
What about rotating it to the horizontal then, should slackening the pump valve connections allow me to do this without drainging the system. Gate valves are only 3 months old?
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one final question. The pump is too hot for me to hold my hand on it. Is this normal. Could gunk any corrosion etc bonded to the pump make it run hot?
I effectivly had a new system fiited boiler etc and because this pump had been replaced by the previous owners for the third time only about 12 months before we moved in I assumed it should be ok to use again in our new system.
Ive just had the silver screw out and there is no air. But there was a really loud air lock type graoning noise last night that woke us up, this had never happened before. Our boiler keeps showing a fault code which say 'no flow' so I dont know if the pump is running hot then stopping? or if the boiler isnt right and its switching the pump off, boiler is 3 months old.
I effectivly had a new system fiited boiler etc and because this pump had been replaced by the previous owners for the third time only about 12 months before we moved in I assumed it should be ok to use again in our new system.
Ive just had the silver screw out and there is no air. But there was a really loud air lock type graoning noise last night that woke us up, this had never happened before. Our boiler keeps showing a fault code which say 'no flow' so I dont know if the pump is running hot then stopping? or if the boiler isnt right and its switching the pump off, boiler is 3 months old.
Are you really unable to read the pump installation instructions ? And you think its not necessary to post a picture which would immediately show us why the pumps are failing.
Of course its a common trick for cowboys to install something wrongly for old people knowing it will fail soon!
Tony
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Agile, I dont have pump instructions and didnt post a pic because it would have caused confusion. The system has for years had the pump under the floor and theyve been replacing the pumps. Ive been here 10 months got rid of the crap Rayburn and had a new boiler put in, the pic I did eventually post is the new set up. The pump was used in the old set up though for about a year, so if my pump has gone after 3 months of the new set up i presumed it was more to do with the old set up where I know theyve kept replacing pumps.
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one final question. The pump is too hot for me to hold my hand on it. Is this normal. Could gunk any corrosion etc bonded to the pump make it run hot?
I effectivly had a new system fiited boiler etc and because this pump had been replaced by the previous owners for the third time only about 12 months before we moved in I assumed it should be ok to use again in our new system.
Ive just had the silver screw out and there is no air. But there was a really loud air lock type graoning noise last night that woke us up, this had never happened before. Our boiler keeps showing a fault code which say 'no flow' so I dont know if the pump is running hot then stopping? or if the boiler isnt right and its switching the pump off, boiler is 3 months old.
I effectivly had a new system fiited boiler etc and because this pump had been replaced by the previous owners for the third time only about 12 months before we moved in I assumed it should be ok to use again in our new system.
Ive just had the silver screw out and there is no air. But there was a really loud air lock type graoning noise last night that woke us up, this had never happened before. Our boiler keeps showing a fault code which say 'no flow' so I dont know if the pump is running hot then stopping? or if the boiler isnt right and its switching the pump off, boiler is 3 months old.
Or that it has hot water running through it? 
Or that it has hot water running through it?
Unlikely when boiler showing no flow fault!
True, true, but in general pumps can get flipping hot in general use.
D
DeltaT2
Is there anything in the FAQs on circulation pumps Tony??
By the way, what ever happened to ChrisR??
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