Bleeding a CP53 circulation pump

[Phillj]

I have had a Circulating Pump ltd { CP53 pump } fitted. How do I bleed it.
I have tried unscrewing the plastic hexagon nut in the centre of the pump. This revealed a fine threaded needle type valve. I unscrewed this till it was fully extended but no water or air came out.
The needle valve stays in the centre of the pump and does not come all the way out.
Can anyone please HELP. Be gentle with me if this is a noobs question, as I have only just join your excllent site.

Thanks for any help that can be given.
phillj

 

[compheat]

When you unscrew the bleed point in the centre of pump I think you need to pull it out slightly to release air, only do this when the pump is turned off.

 

[Phillj]

Just tried your suggestion and had a few droplets of water. Is that all I should be getting.
Many thanks for your prompt reply
phillj