Potterton 80, expansion vessel repressurisation

[abrocky]

I emptied the water from the boiler using the pressure relief valve, before the heating expansion vessel to 1bar,

I thenand then drained more water from the boiler thinking it wud need it, but now when I try to pump more air into the vessel it just comes out if the auto air vent (no screw present but reading up on it there should be?)

Can anyone assist in whether I need a screw in it tight to repressurise... Thanks.

 

[Phill Peck]

Air or water comes out of the air vent?

 

[abrocky]

Just air...

Works fine on heating water, but when heating is turned on, pressure builds up on the pressure gauge on the boiler... And it then locks out.

I searched some possible cheap causes before having to throw it away.

Cheers

 

[Phill Peck]

Sounds as though the vessel is goosed.
Was worth ago trying to recharge.

Shouldn't be too expensive to have replaced

 

[abrocky]

Lol... Only just bought the house so was hoping everything worked... Ahhhh well...

Thanks for the help