Bleeding system (venting spleen after drain)

[DIWHY]

Refilled (slowly) after drain down for new rad fit.

Old Gloworm boiler

Gravity hot water (primatic fortic tank) ok

4 out of 6 rads working ok.

2 rads not working on ground floor.

All been bled to death but no joy.

Crackling noise from pump Myson (unit two)

Assuming airlock inpump?

? can I crank the power up to position II to force air out?
Is that little black plastic knob on the casing the bleed valve.

ThanQ

 

[kevplumb]

Is that little black plastic knob on the casing the bleed valve.

yes it is undo it and put a cloth underneath
you will get a little water out after the air

 

[DIWHY]

Thanks Kev

but can I crank up the power with the little black rocker switch marked I / II to force air out if its elsewhere in the pipe system?

 

[kevplumb]

give it a go

 

[Nige F]

Primatic- fortic You have my sympathy- Are the downstair rads on drop pipes from above?...Try shutting all the other rads and turning up the pump.