Baxi 105e leaking from grub screw hole

[ianmcd]

Hello finally got round to replacing the parts . I don't have any leaks but the pump now sounds different (more of a hissing sound ) . Could this be air in the pump ?

yep place an old towel under the pump and turn the large screw on the front a 1/4 turn until all the air is out then close again

 

[micpwelsh]

Anticlockwise ?

 

[micpwelsh]

And should the boiler be on or off ? Thanks

 

[DP]

And should the boiler be on or off ? Thanks

Word of advice, do not wrestle with that pump or you will have leaks

 

[ianmcd]

Anticlockwise ?

yes

And should the boiler be on or off ? Thanks

doesnt matter, I always do it with the boiler running as you will hear the water moving when the air has cleared, make sure you use a decent sized towel below it though

 

[micpwelsh]

Thanks sorted

 

[micpwelsh]

1 last thing , just noticed my pressure gauge has dropped 0.2 bar over night since replacing the parts and refilling the boiler. There is no visible leaks anywhere , could this just be trapped air escaping ?

 

[ianmcd]

1 last thing , just noticed my pressure gauge has dropped 0.2 bar over night since replacing the parts and refilling the boiler. There is no visible leaks anywhere , could this just be trapped air escaping ?

yes, the pressure will change when the boiler is running but shouldnt fluctuate too much

 

[micpwelsh]

Sorry to be so much trouble but I have one more question . My pump is much better than it was but still slightly noisey . The gas engineer at work suggested I take the pump screw out completely to get all the air out ! . I'm assuming this would be madness as water would fly everywhere , am I correct ?

 

[polesapart]

No, you'll get a dribble. If air present a hiss and a dribble. Then replace screw.

Protect your PCB! Towels/clingfilm.

 

[DP]

No, you'll get a dribble. If air present a hiss and a dribble. Then replace screw.

Protect your PCB! Towels/clingfilm.

is that not why the auto air vent is fitted to that pump body?

 

[micpwelsh]

Would the autovent eventually get the air out by itself ?

 

[ianmcd]

Would the autovent eventually get the air out by itself ?

That is what it is there for but all makes are really cheap crap, they either leak or stick, the air will move itself eventually when the heating is on , better to let it out thrugh the shaft screw as you have done

 

[Daviesmith]

Hi I've just changed a radiator + drained the system down to do it . I've also got air I'm my pump now and I can't get it out . I've tried opening the pump screw but the air won't come out ! Any other ideas ?

 

[ianmcd]

yes start your own thread instead of Hi-jacking an old one , which is against site rules