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thermostatic cartridge replacement mira 12 year old shower

This question is regarding Mira Excel (1990-96) Cartridge - 903.33

how does one remove shroud to expose cartridge

Asked 2 years ago by John Cousins

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 2 years ago by Barrie Seabright
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You send it, we mend it.