Tritan Shower Overflow Problem?

[nmfeb70]

Hi Everyone, I have a Triton Madrid electric shower which is around 12 years old and the overflow is leaking. I thought there might be a kink in the hose, so I replaced both hose and head but with no success. This only happens when I lift the shower head parallel or nearly parallel to the shower, if I lower the head towards the shower floor it stops overflowing. (I could shower while sitting down I suppose?)
I read elsewhere on this forum that the heater can may need replacing in a situation like this, but the Triton website says the part has been discontinued.
If a new shower is needed is it a manageable job? Many Thanks.

 

[terryplumb]

Electric showers don't have overflows. What exactly are you referring to ,could it be the pressure relief valve ? Small tube low down near shower bottom ?

 

[nmfeb70]

Yes, next to the hose outlet.

 

[terryplumb]

Although you can get a replacement PRV ,the cause of them intervening is due to back pressure. That can be due to the shower head blocked partially with Limescale ,the shower hose kinked internally ,or a build up of Limescale within the shower. At 12 years old I would probably opt for a new shower.

 

[nmfeb70]

It has only started to happen since I removed the shower head to descale it, a new head & hose hasn't solved the problem so a new shower maybe the only option.

 

[terryplumb]

Did you replace the PRV ? Once it has activated it won't re seal and has to be replaced.

 

[nmfeb70]

No I haven't replaced it.

 

[nmfeb70]

How easy is the PRV to replace? Looking at diagrams it seems there are just two screws?

 

[seco services]

yes easy install. but you need to find what caused it or it'll blow straight away
you can fix a prd providing you have the rubber ball that has blown out, they can be pushed back in.

 

[nmfeb70]

I removed the shower cover and the PRD, there is a membrane cover that has blown. This now makes sense as the problem has only surfaced since I replaced the original shower head which, along with a possible kink in the old hose, must have been forcing the water back? I have ordered 2 PRD's (which include the rubber covers) from the Triton website for around £11. Thanks very much for your advice and I will let you know how I get on.

 

[nmfeb70]

I will also return original shower head & a new hose.

 

[terryplumb]

You should ideally replace with manufacturers hose and shower head ,suitable for your model. Internal hose diameters vary ,as do showerheads.

 

[nmfeb70]

Yes, the original shower head & the new hose are both Triton.

 

[seco services]

run the shower with new hose and prd first. all ok then fit head and try again.

all should be ok

 

[Johntheo5]

I replaced a 18 year old Mira Sport with a Triton T80 Fast-Fit, the Mira had no PRD but the Triton does, I think both are rated for 10 bar static but wonder why the Mira had no PRD as I wouldn't fancy seeing its heating can subjected to very high pressures, wonder what pressure does the PRD operate.

Spoke too soon, on inspection, the Mira does have a PRD, its a little rubber ball inside the heating can, see photo of the opened heating can with heating elements removed and a photo of the rubber ball removed from the can.