Shower troubles

[Whn1]

Ok the cust has a 1.5bar twin impeller pump solely for the shower, cold runs pretty well, hot dribbles out, pump kicks in on both, they have a triton moya with the big fixed head, heads about 12" below the cwsc, there's good flow going to the pump from both feeds but with the pump off you only get a dribble (if you're lucky) from the head itself. The cold runs about 1.5 mtrs from the tank and then runs straight down to the pump which is under the bath, the hot cylinder is about 3mtrs from the pump, both supplies run independently In 22mm.

Opinions?

 

[Whn1]

Here's some art


---
I am here: http://tapatalk.com/map.php?3uqam4

 

[SimonJohns]

Many things to check

Any strainers or filters in the hot water pipe. And also on the shower valve

Has the impeller snapped off on the hot side of pump ?

Is the hot good in rest of house? Could be an issue with cold feed to cylinder

Also if a scale area, check surry flange for a build up

 

[Whn1]

Checked all the above Simon.
I must add it's a fairly new install.

 

[SimonJohns]

Have you put a bit of 15 on the pump just to check its not that and it is the shower valve?

 

[Whn1]

I didn't check that in all honesty sometime it takes a while or a bit of fiddling for the pump to kick in, I'm guessing this should have been a negative pressure pump?

 

[SimonJohns]

As long as the shower isn't higher than the cwsc you won't need a negative head pump.

 

[WHPES]

Probably some other issue.

Try swapping the hot and colds over on the pump (i.e. opposite sides to now) If its still the same its not the pump.

Check strainers on the pump and on the shower mixer. Make sure check valves are functioning OK.


BTW its "independent" not "independant" As we said in school there's no "ant in it"

 

[Whn1]

The thing that's getting me is that with the pump switched off I'm getting barely any water to the head, it's about 8" and circular, 1.5bar would be man enough?

 

[Whn1]

Probably some other issue.

Try swapping the hot and colds over on the pump (i.e. opposite sides to now) If its still the same its not the pump.

Check strainers on the pump and on the shower mixer. Make sure check valves are functioning OK.


BTW its "independent" not "independant" As we said in school there's no "ant in it"

Apologies

 

[WHPES]

With the pump off you won't get much water to the head as the impeller is not moving.

If you bypass the pump by connecting the inlet and outlet pipes together you should get more.

 

[Whn1]

But I thought I may get something there? Because there's a foot of head...

 

[mountainman]

A foot of head isn't much really.
Add some resistance such as a few elbows and a flow switch and there might not be enough flow to start the pump.

I've had this problem before and solved it with a negative head pump.

 

[Whn1]

That's what I was thinking because occasionally it doesn't make the switch, so I was thinking possibly a 2.5bar neg head pump.

 

[gravytrain]

this is what i'd do if it helps, disconnect the hot outflow under the bath put a bit of pipe with an iso on it and a flexi into a bucket
you can then test wether the pump starts when you turn on the iso.
this should tell you either new pump or new shower

 

[Whn1]

Both seem ok ish though but the hot isn't as powerful as the cold, with the pump running it dribbles fastly out of the head..

 

[kay-jay]

There is an ant in pedantic.😀

Sent from my GT-I9100 using Tapatalk

 

[dancinplumba]

Ok the cust has a 1.5bar twin impeller pump solely for the shower, cold runs pretty well, hot dribbles out, pump kicks in on both, they have a triton moya with the big fixed head, heads about 12" below the cwsc, there's good flow going to the pump from both feeds but with the pump off you only get a dribble (if you're lucky) from the head itself. The cold runs about 1.5 mtrs from the tank and then runs straight down to the pump which is under the bath, the hot cylinder is about 3mtrs from the pump, both supplies run independently In 22mm.

Opinions?

thats all rite then 🙂

 

[WHPES]

I am a part time proof reader for a magazine and it's hard to quit............

However errors on paperwork may seem trivial but it is something that customers do tend to notice

 

[dancinplumba]

and its spelt correct ??

 

[mountainman]

A combined plumber and proof-reader, such desperate or is it disparate trades. Lol

 

[WHPES]

I used to do all the technical reports and proof read the brochures when in the engineering field.

Proof reading is easy money and you can fit it around your work schedule. I will happily do more if I get the offer.

And, yes, plumbing work is thin on the ground at present so I'm glad of the extra cash.

 

[mountainman]

Probably got an app doing your job now mate.