They are a great investment. If you do have too much calcium it can precipitate onto the shaft of the impeller, this can decrease the performance of the pump. Eventually, the pump could cease to function, but a solution of 1 teaspoon citric acid and 500ml warm water will clean the shaft and magnito if left overnight. If there is still a build up of calcium, scrub it clean, until the magnito moves freely on the shaft. Vinegar will also do the trick. Please email me if you are in any doubt about the servicing of your TUNZE pumps.
Cheers Anita anita@aqua-africa.co.za
Erm just on that, i have 2 pairs of the original seios, i am the second owner and they also been running no stop for around 6 years now. No issues ever.
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