How to clear an air lock

Discussion in 'Tech/Mech General' started by irnbru, Nov 7, 2015.

  1. irnbru

    irnbru Funster Life Member

    Joined:
    Jun 27, 2013
    Messages:
    6,220
    Likes Received:
    11,749
    Location:
    Glasgow
    We appear to have an air lock but all taps and shower water is running freely and not spurting at all.
    We did run low on water but refilled tank. The pump keeps coming on which makes me think air in the system but how can we fix it?
     
  2. icantremember

    icantremember Funster

    Joined:
    Sep 2, 2010
    Messages:
    5,528
    Likes Received:
    7,656
    Location:
    Nr Watton in Norfolk
    You may have a leak in the system.
     
  3. pappajohn

    pappajohn Funster Life Member

    Joined:
    Aug 26, 2007
    Messages:
    30,364
    Likes Received:
    18,054
    Location:
    YO11 2BD
    Could also be the pumps internal valves are slightly leaking allowing water to release back into the fresh tank under pressure.
     
  4. irnbru

    irnbru Funster Life Member

    Joined:
    Jun 27, 2013
    Messages:
    6,220
    Likes Received:
    11,749
    Location:
    Glasgow
    Oh no. I hope not. Doesnt sound good. It only happened when the water got low.
     
  5. pappajohn

    pappajohn Funster Life Member

    Joined:
    Aug 26, 2007
    Messages:
    30,364
    Likes Received:
    18,054
    Location:
    YO11 2BD
    I would think, if there was a minor airlock, once the air was compressed enough for the pump to switch off it would remain compressed until the tap was opened to release the pressure.
    The trapped air will have nowhere to go so cant decompress in the sealed water system....unless theres a minor leak in the pipes, taps or pump valves.
    If its a Fiamma or surflo pump they also have an adjuster for the switch off point (it DOESNT alter the pressure, only the switchoff point) which may help if its adjusted....or maybe not.
     
    • Like it Like it x 1
  6. Theonlysue

    Theonlysue Funster Life Member

    Joined:
    Sep 14, 2009
    Messages:
    3,151
    Likes Received:
    2,980
    Location:
    Essex
    You could try emptying all the water out, including the boiler then start again.
     
    • Like it Like it x 1
  7. irnbru

    irnbru Funster Life Member

    Joined:
    Jun 27, 2013
    Messages:
    6,220
    Likes Received:
    11,749
    Location:
    Glasgow
    Just pressed the water button back on on control panel so I could empty the system but the noise has stopped so no need. :) So it appears to have solved itself.
    Will have a look underneath to see if I can see any leaks when rain stops.Just for peace of mind.

    Thanks folk.
     
    • Like it Like it x 2
  8. irnbru

    irnbru Funster Life Member

    Joined:
    Jun 27, 2013
    Messages:
    6,220
    Likes Received:
    11,749
    Location:
    Glasgow
    So I seem to have spoke too soon. Flushed the toilet and pump noise came back. Now there is water pouring out from underneath, somewhere near the back wheel., it only empties when the pump is on.

    Now im wondering if mum couldve accidentally knocked a lever or something when shes been rummaging about. ??
     
  9. Minxy Girl

    Minxy Girl Funster Life Member

    Joined:
    Aug 22, 2007
    Messages:
    10,781
    Likes Received:
    12,129
    Location:
    E Yorks
    Sorry but when I saw the thread title my mind went stupid and all I could think of as a solution was to suggest you:







    ....







    ....






    FART!!!!! :rofl:
     
  10. DBK

    DBK Funster

    Joined:
    Jan 9, 2013
    Messages:
    9,189
    Likes Received:
    12,751
    Location:
    Plympton, Devon
    Sounds like you've got a leak I fear. Need to look underneath, ideally with someone inside who can turn the pump on so you can see where the water is coming from.
     
  11. TUCANO

    TUCANO Funster

    Joined:
    Aug 15, 2014
    Messages:
    990
    Likes Received:
    812
    Location:
    Exiled in Yorkshire
    On your model Autotrail doesn't the boiler dump drain out near the back wheels, you haven't knocked the drain valve to open have you.
     
    • Like it Like it x 3
  12. irnbru

    irnbru Funster Life Member

    Joined:
    Jun 27, 2013
    Messages:
    6,220
    Likes Received:
    11,749
    Location:
    Glasgow
    Yes at back wheel. No drain valve is closed. The pump is going mental. One minute its pulsing every couple of secs. We turn it off wait 10 mins then all seemed well til the toilet got flushed. Pump came on solidly and was dumping our water so we turned pump back off. Waited 10 min turned it on and it came on for 2 secs andwent off.
    So at the moment its not dumping any more water.
    Its too dark outside now so we will wait til morning and try and see whats going on.
     
    • Like it Like it x 1
  13. Scattycat

    Scattycat Funster

    Joined:
    Jan 3, 2013
    Messages:
    846
    Likes Received:
    1,186
    Location:
    Mayenne, France
    Don't know how cold it's been over there but your last comment makes sound as though the dump valve needs resetting
     
    • Like it Like it x 2
  14. Puddleduck

    Puddleduck Funster Life Member

    Joined:
    Jan 15, 2014
    Messages:
    6,800
    Likes Received:
    14,646
    Location:
    Scottish Borders
    Hope you get it sorted Sandra.
     
  15. Badknee

    Badknee Funster

    Joined:
    Aug 25, 2014
    Messages:
    3,917
    Likes Received:
    17,607
    Location:
    notloB
    Sounds a bit odd that. If a pipe had sprung a leak (water under van) then it wouldn't switch off at all. If it was an airlock it wouldn't leak water under the van. The only dump valve I am aware of it the dhw heater dump valve???
     
  16. irnbru

    irnbru Funster Life Member

    Joined:
    Jun 27, 2013
    Messages:
    6,220
    Likes Received:
    11,749
    Location:
    Glasgow
    Well it done it again..So having had the pump switched off for a while, and our water tank depleted to a quarter tank I put it on briefly to get some water and my goodness the amount of spurting that came out of the tap..finally! Turned the bathroom tap on and that spurted a little. Refilled the water tank and all has been well for several hours now. So it seems to have fixed itself for the moment :)
     
    • Like it Like it x 2
  17. teensvan99

    teensvan99 Funster

    Joined:
    May 17, 2015
    Messages:
    226
    Likes Received:
    246
    Location:
    Margate
    What type of pump do you have. If you have a ssubmersible pump in the tank these can get an air lock just above the non return valve. If diphrame pump could be a leak or pressure valve playing up
     
    • Like it Like it x 1
  18. irnbru

    irnbru Funster Life Member

    Joined:
    Jun 27, 2013
    Messages:
    6,220
    Likes Received:
    11,749
    Location:
    Glasgow
    Absolutely no idea. But all is well today so far(y)
     
    • Like it Like it x 1
  19. Gellyneck

    Gellyneck Funster Life Member

    Joined:
    Jun 5, 2014
    Messages:
    1,854
    Likes Received:
    2,244
    Location:
    Scotland
    Think it will be a Shurflo series pump.
     
    • Like it Like it x 1
  20. TheBig1

    TheBig1 Funster Life Member

    Joined:
    Nov 27, 2011
    Messages:
    8,046
    Likes Received:
    10,401
    Location:
    Dorset
    probably an automatic dump valve. if the temperature drops, it opens the valve to dump the water to prevent damage. a quick and dirty fix is a clothes peg on the knob, but only when using the van.....sounds eye wateringly painful though
     
    • Like it Like it x 2
Loading...

Share This Page