Airlock! cant ged rid of....

[lambchop]

Hi

Any help/ideas greatly appreciated.


Got a Potterton WH60 (g floor outside of small hotel), 2 HW cylinders (no htg), (in plantroom basement of hotel). Call out this morning, slave cylinder rtn temp 10 degress, so pulled off some water from return, got rid of airlock, cylinder now ok. Unfortunately airlock has moved to boiler, made sure aav is working top of boiler, bleed pumps, pulled water off rtn on master then slave cylinder while adding water system. There is no aav's on any of the plantroom pipework.

Have I missed something, or just keep trying

Thanks in advance for help

 

[lame plumber]

its a hotel, nevr spend any money so as u say needs aavs fitting, keep cracking the connections

 

[Centralheatking]

Shoot it up with mains pressure - clears most airlocks

 

[SafeGasInstall]

On a similar ocasion I had the pump off and then crack connections , then put boler/ pump on again the turn of then crack connection ...... Keep repairing till it comes out of he

 

[lambchop]

Thanks lads, it finally cleared and have persuaded them to fit aav's...