Profitec Pro 300 - Draining Boilers



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    Don't drain the water boiler that way, you just put unnecessary strain on your pump. Due to the boiler design you will never get the water level below the drain pipe you can see here:


    The picture is from the Casa IV, but they use the same group head / water boiler. So the described procedure doesn't drain anything from the boiler, it just pulls air up to and into the pump. The Ulka EX5 is not designed to run dry though and might overheat if you are struggling to prime it afterwards.

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