Bleeding gravity fed heating system

When working on some systems there appears to be a drawing of air rather than air coming out. Why, never understood and leads to so many problems. Any thoughts gratefully received. Thanks Colin

Reply to
colin.allix
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Switch the pump off before bleeding. Regards Tom

Reply to
Tom

Language!

Reply to
Mike Barnes

Is "bleeding" in the title a verb or an adjective?

Reply to
Set Square

"Set Square" wrote | Is "bleeding" in the title a verb or an adjective?

Watch out for any threads entitled "Bloody circular saw"

Owain

Reply to
Owain

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