Help! Bristan shower cartridge , cant turn off cold water from shower

[Bettyboo]

Can anyone help please ?
I am in the middle of trying to clean/ service a Bristan shower cartridge for this shower

Recessed concealed shower
1901 Concealed Concentric Shower Valve | Bristan - https://www.bristan.com/products/mixer-showers?code=n2%20cshcvo%20c

It had started to drip after Thames Water installed a water meter outside . I was advised to clean the cartridge .
This morning I started to try and dismantle it to access the cartridge ,and as I started to do this the cold water started to run through the shower more and so I turned the water off . I got so far and could not remove the cartridge as the instructions are not clear and I cant find it on youtube. I am down to the level in the photos, I cant twist or pull the cartridge out . Am I supposed to remove the small plate surrounding the cartridge by removing the circular discs and parts either side of the cartridge ? Not sure how to do this .....I thought the cartridge would pull straight out when I got to this level

I reassembled it without moving the cartridge but when i turn the water on I cannot stop the cold water at all through the shower heads , when i turn the valve it just wont turn off

Please help , its now driving me mad ! thanks

Betty

 

[ShaunCorbs]

You won’t be able to clean that type of cartridge will require a new one sorry to say

Best guess the outer lever isn’t aligned/ closing off

Best advise try moving the flow lever over 1/2 a turn to the left if you close to the right if you understand me?

 

[Bettyboo]

Thanks Shaun but how can you tell I thought it would need a sk1850 -2 if it needed replacing? They sent me the attached file Bristan 1901 but this recessed version seems a bit different to these fittings . I would still need to get the valve out , do i remove the surrounding plate and how ?
to turn off the water at the shower ...Sorry dont know re closing flow lever , which bit is that in the instructions? . Thanks alot

 

[Bettyboo]

? fittings

Thanks Shaun but how can you tell I thought it would need a sk1850 -2 if it needed replacing? They sent me the attached file Bristan 1901 but this recessed version seems a bit different to these fittings . I would still need to get the valve out , do i remove the surrounding plate and how ?
to turn off the water at the shower ...Sorry dont know re closing flow lever , which bit is that in the instructions? . Thanks alot

 

[ShaunCorbs]

I would say that’s not your unit do you have a picture fully built ?

 

[Bettyboo]

I would say that’s not your unit do you have a picture fully built ?

 

[ShaunCorbs]

Turn the black plastic piece until the shower stops running then pull the black piece out and reset it to where the off position was before eg where the handle used to stop

 

[Bettyboo]

the black ring (I think the temp stop ring ) doesnt turn at all in situ

 

[Bettyboo]

I have partially assembled it to see what is happening , the temperature flow black ring doesnt stop the water being turned off ,if I turn the knob clockwise the hot water is turned off but I cant turn the cold off fully I think the cartridge keeps going round inside

Any idea anyone how to remove this inner plate please ?

 

[Bettyboo]

I have partially assembled it to see what is happening , the temperature flow black ring doesnt stop the water being turned off ,if I turn the knob clockwise the hot water is turned off but I cant turn the cold off fully I think the cartridge keeps going round inside

Any idea anyone how to remove this inner plate please ?