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excel cartridge whistles

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

Cartridge is set to High Pressure, been fine for over 5 years, but now when set to mid range say 4-5 on temp it whistles quite loudly yet turn temp down it stops, turn temp up it its now weeping from behind it somewhere, is it simply shot it? It is a true power shower in that the 3 bar pump twin impellor pump is gravity fed both hot and cold, NOT from mains pressure, flow is still excellant, just this noisy whistle. will a replacement cartrdge cure it?

Asked 4 years ago by Anonymous

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.
Answered 4 years ago by George Thomson
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