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Central heating pump scaled on outside


nameuser

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British gas engineer due to call for noisy CH problem.

Is it usual for CH pump to be badly encrusted with limescale on the EXTERIOR?

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wee eddie

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It's leaking - a seal has disintegrated and the "Scale", as you put it, is the water's dissolved impurities left behind as it evaporates.

The scale should come off fairly easily, but replacing the seal is another matter. However it should not be out-with the skills of an averagely competent engineer!

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woodchip

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As above the Pump is of a mixed alloy, so if it leaks as above it corrodes just like rust on steel

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