Icing on compressor tubes





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  1. #1
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    Default Icing on compressor tubes

    Hi, I've recently replaced the compressor on my camping fridge/freezer from a Danfoss Bd35 to a similar spec Sikelan compressor.

    The fridge/freezer is cooling perfectly, however, I have noticed that one of the tubes on the compressor is icing up. I'm not sure if this should be happening?

    I haven't seen this happening on the previous compressor

    I have added a picture below showing the tube iced up.

  2. #2
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    Default Re: Icing on compressor tubes

    It either means that it has to little or too much gas in I think. Mine did it as well and after a regass it was sorted. Apparently some icing in certain instances are normal but it should not be the norm. Rather have it checked out by someone in the know.
    By the way does your fridge have a cooling fan? Is that still working as it should? Might also be the cause if not working?

    CATS
    2015 VW Transporter T5.1 132kw 4motion DSG - (Shrek) My Bush-Bus
    2003 Safari Xplorer
    Previous : 1996 Colt Rodeo 3000 V6 (The Original! - SOLD) : 1998 Colt Rodeo 2.8Tdi (My first Diesel - SOLD) : 2008 Pajero 3.2 DiDc GLS (Sylvester - SOLD) : 2001 LR Defender 90 (Grizzly - Sadly SOLD) : 2010 LR Discovery 4 HSE (Snow White - SOLD) : 2001 Pajero 3.2 DiD GLS (Snoopy - SOLD but never forgotten) :2009 Pajero 3.2 DiDc GLS (Casper ,Old Faithfull, - SOLD)

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  4. #3
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    Default Re: Icing on compressor tubes

    Try some issolation first.

  5. #4
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    Default Re: Icing on compressor tubes

    Would follow CATís advice....seems like gas related imo pipe does get very cold....but would not expect that amount of icing especially in Windhoek with lower humidity than say Dbn or CT.

    You want that ice inside the fridge and not on the pipe leading into it.

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  7. #5
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    Default Re: Icing on compressor tubes

    I think when they replaced the compressor, they removed the black foam insulation that should be around the pipe.

    Should be able to get new insulation from any decent refrigeration company and just wrap around the pipe.

  8. #6
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    Default Re: Icing on compressor tubes

    Quote Originally Posted by Cats View Post
    It either means that it has to little or too much gas in I think. Mine did it as well and after a regass it was sorted. Apparently some icing in certain instances are normal but it should not be the norm. Rather have it checked out by someone in the know.
    By the way does your fridge have a cooling fan? Is that still working as it should? Might also be the cause if not working?

    CATS
    Quote Originally Posted by Cats View Post
    It either means that it has to little or too much gas in I think. Mine did it as well and after a regass it was sorted. Apparently some icing in certain instances are normal but it should not be the norm. Rather have it checked out by someone in the know.
    By the way does your fridge have a cooling fan? Is that still working as it should? Might also be the cause if not working?

    CATS
    You could be right, I called the technician and explained the, he told me it could be due too much gas so he is coming to fix it (wonder why he didnt fix refil properly the first time ).
    Anyway, yes there is a cooling fan on the condenser and it works well, there doesn't appear to be overheating. Thanks

  9. #7
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    Default Re: Icing on compressor tubes

    Quote Originally Posted by Charlestrum View Post
    You could be right, I called the technician and explained the, he told me it could be due too much gas so he is coming to fix it (wonder why he didnt fix refil properly the first time ).
    Anyway, yes there is a cooling fan on the condenser and it works well, there doesn't appear to be overheating. Thanks
    Please keep us updated.

  10. #8
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    Default Re: Icing on compressor tubes

    That fridge is overcharged with gas!
    Drop little by little till the ice starts dissapearing!
    Insulation will only sugarcoat the problem
    You are getting liquid back to the comp and will shorten the life of that comp

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  12. #9
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    Default Re: Icing on compressor tubes

    Who repaired it?
    Farmfreezer?

  13. #10
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    Default Re: Icing on compressor tubes

    Farm Freezer now new name :
    Air Cool CC .
    The fridge in op appears the ones made by Farm Freezer back in the day.
    A Minus 40 concept.
    They work exremely well and very very robust. Made of galvanized steel
    and /or stainless steel. The inside stainless steel.
    You still get them on very rare occassions at loose goods auctions.
    Last edited by janseekat; 2020/06/02 at 08:26 AM.

  14. #11
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    Default Re: Icing on compressor tubes

    Quote Originally Posted by janseekat View Post
    Farm Freezer now new name :
    Air Cool CC .
    The fridge in op appears the ones made by Farm Freezer back in the day.
    A Minus 40 concept.
    They work exremely well and very very robust. Made of galvanized steel
    and /or stainless steel. The inside stainless steel.
    You still get them on very rare occassions at loose goods auctions.
    Yes you are right its the one. They are very robust and heavy as well!!. I picked mine up for 400 bucs at a loose goods auction two years back and with some minor DIY adjustments I managed to get it to work until recently when the compressor appeared to fail so I replaced it.

    Anyways, the technicians came back to release some of the gas and the tube is no longer freezing over significantly. I do however notice a very thin layer of ice when the temperature is set to a maximum low (- 18 degrees), they told me this can be expected at very low temperatures due to the humidity in the area (I'm in Gaborone) . They also added on the insulation rubber on part of the tube that had bedn freezing over.

    Do you guys think the thin layer of ice at very low temperatures is acceptable, or maybe I should have this checked by other professionals?

    If you know of a decent refrigeration expert in Gaborone please recommend?

  15. #12
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    Default Re: Icing on compressor tubes

    Temp of -18 is very low. The compressor will work overtime.
    I set my freezers (engel and snomaster) on - 10 to - 13.
    Works well.
    Last edited by janseekat; 2020/06/03 at 02:14 PM.

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