This question is regarding Mira Excel/Select Thermostatic Cartridge - 903.33

mira excel shower

HI , i have a mira excel shower --fitted in new house 10 or 11 years ago --all ok until recently --all pressure at taps around the house is great -- pressure in shower when cold water only is coming through is fine --but when the hot is increased pressure drops off and shower works but not very hot and power down low.

what should i do or look to replace

thanks
Asked 12 years ago by Anonymous

Hi

Assuming nothing with your plumbing has changed IE. You have had a combi boiler fitted or replaced then if  you have problems with an Excel then it's best just to replace the cartridge, however it is probably worth stripping the cartridge out and checking that the inlet filters are clean, before buying a new cartridge.

 

To replace the cartridge Pre 2003 units

 

Turn off hot and cold water supply

 

Pull front temperature knob off The rest of the knob assy. just unclips

 

Remove 4 screws that hold cartridge into body

 

Pull old cartridge forward shouldn't be too tight

 

Set new cartridge for High/Low pressure (instructions with cartridge)

 

Slip new cartridge into place remember to check that the new seals are all in place (and don't drop out as you push back)

 

Tighten screws be careful not to over tighten

 

Refit knobs.

 

Turn on water and test. (Occasionally you will have to reset the cartridge temperature, instructions with cartridge)

 

Easy peasy!!!!

 

Cartridge   Mira 903.33  This cartridge supersedes the previous high and low pressure versions

Link to cartridge

http://www.showerdoc.com/shower-spares/mira/MIRA-903-33-Cartridge-Assembly-(Up-To-2003---Black)-Comes-with-seals

 

Answered 12 years ago by Anonymous

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