How to release air from the system.

[Ofer Vilmovsky]

Hi,
I had my septic tank empty and since it wasn't cleaned properly the guy who cleaned it told me to open the cold water tap in the house and that was open for quite a while . When he left there was no hot water in the taps (there was a very low pressure coming and going until it was totally stopped) Read some about it and I think I have air locked in the system.
We have a cylinder (hot water tank) in the ground floor and a cold water tank in the loft. We also have a water pump as the water flow is weak. I saw a small valve that I screw off next to the cylinder hot water exit and felt air coming out along with hot water when it open and the water pump also start working as hot water going through it when the valve is open but it seems like the air in the system is endless as I open it for so much time and it still air comes out. I also scared as i read it could be dangerous and can explode ?
When closing the valve for sometime and then open the hot tap the stream looks normal and strong but after few seconds gets weaker and stops again.
Can anyone help please

Thanks

 

[HERTS P&D]

Use a wet vac on the spout of the hot tap and suck the air/water out. Also check that your cold water tank in the loft has water in it and the float valve is working correctly.

Andy

 

[Ofer Vilmovsky]

Thanks Andy,

I don't have this wet vac, can I use my mouth to suck the air out from the shower pipe? Or is it a mission impossible without the right tools?

Cheers

Ofer

 

[HERTS P&D]

No, only a wet vac would work.

Andy

 

[dilalio]

No, only a wet vac would work.

Andy

I've met a few who could have used their mouths to do it....

 

[Ofer Vilmovsky]

Hi HERTSDRAINAGE2010,

Are you serious or just joking?

Thanks

 

[dilalio]

Hi HERTSDRAINAGE2010,

Are you serious or just joking?

Thanks

No mate, Andy was serious... I was joking

 

[Ofer Vilmovsky]

Ha ha I also know few but, seriously I thought I can vacuum the air like you vacuum fuel out of a car tuel tank the old fashion Do you know other way rather than the wet vac or I'll have to call a pro? By the way, why does releasing air from that valve next to the out water pipe is not enough?

Thanks,

Ofer

 

[Ofer Vilmovsky]

What wet vac should I use? Does the engine should be in certain size or any would do? Industrial /domestic

Thanks

 

[HERTS P&D]

This one:

https://www.wickes.co.uk/Wickes-Wet+Dry-Vacuum-with-Blower-20L---1250W/p/215735

Andy

 

[Ofer Vilmovsky]

Thanks Andy,

And then I just need to attach it to one of the exits and run it? Would the shower exits pipe should do it? Or should it be attached to where the cylinder is? Do you think I can make it on my own or should I get a professional to do it? Is it complicated? Thanks

 

[HERTS P&D]

Its a wet vac, plug in, place hose under tap spout, turn on hot tap and turn on wet vac and suck.

Andy

 

[Ofer Vilmovsky]

Cheers Andy

 

[Ofer Vilmovsky]

Hi Andy,

Bought the wet vac you recommended. Open the hot water tap and hooked the vac to it, it started vacuuming hot water with air but, I do it now for almost 15 minutes (removing the hot water from the vac when it's stop vacuuming) but, the air seems to keep coming How long should it take? Is 15 minutes or more is normal? Should I keep going until I have proper flow or is something is wrong? Thanks

 

[HERTS P&D]

Check your cold water storage tank in the loft is full of water.

Removing an air lock from the tap should take approx. 30 seconds and not 15 minutes.

Andy