Grundphos Scala 2 Dismantle and Assemble

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I have scala 2 water pump, when I connect it to the electricity there it is not working, and all lights are off, any idea how to fix it?

عبدالرحمنالراجح-سك
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i think my internal pressure tank is not set correctly... can you pump more air in to it without taking it apart? whats the procedure?

ritts
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There is a mistake. The non return valve should be up, not down.

yj