Clearing airlock from open vented system

[Chuck]

Thank you for the suggestion. I've never checked inside the pump. Should I drain the system and open the pump or how do I proceed? Many thanks

There'll be a big screw head on the pump about the size of a 5p coin. It's sealed with an o-ring. Loosen it to bleed the pump. Expect a small amount of water to come out in the process so have a cloth to hand. If you've not been doing this, it's probably the cause of the problem.

 

[moonlight]

Thank you for the suggestion. I've never checked inside the pump. Should I drain the system and open the pump or how do I proceed? Many thanks

Depending which pump you have there could be a plug on the front the size of a 5p. Make sure you have cloths at the ready there will be some water that escapes. Behind the plug is a small fitting that you can try and turn. Be carefull! if you put the heating on the water could be hot. Once you start it spinning you will need to put the plug back in quick. It will get very hot quickly. Gloves might help.

 

[Timmy D]

There are four 22mm pipes coming from the bottom of the tank. Is there any way recognising which one is feeding the system? Is it always 15mm? Should I look for a tee with 15mm pipe?

The f&e tank will be a small tank, not a large one (cold water storage) with multiple 22mm connections (domestic cold water/hot water cylinder supply).