thermostatic cartridge replacement mira 12 year old shower

how does one remove shroud to expose cartridge
Asked 7 years ago by John
Hi

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.

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


Click on the link below, choose the manufacturer of the shower you have, scroll down the list of parts and select the part number you require.


You can then purchase the items online or call the office on 0131 443 9917 pressing option # 1 for spares.

Answered 7 years ago by Barrie Seabright

View Product and Order Online:

Do you require any further help with Tap or Shower Cartridges?

Please click the following link if you would like to see other answers or ask a question regarding the Mira Excel/Select Thermostatic Cartridge - 903.33

If you've landed here and this question is not about your specific product, please take a look at these similar items on our Mira Cartridges page. Alternatively, if you're looking for any other brands you should view our full range of Cartridges.

If you would like to buy this cartridge or look others from the same brand, please view our Replacement Mira Cartridges (All)

For any other support request please get in touch.