Fridge Tip - Snomaster "losing" performance





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  1. #1
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    Default Fridge Tip - Snomaster "losing" performance

    I noticed that my fridge in really warm climates seemed to have lost performance, circa 4 degrees C. I feared a refridgerant leak. I removed the loose cover and did some checking, then removed the slotted louvred SS cover noticed that the slots had gathered fluff and dust over time and that the airflow had been impeded. As the fridge performance is affected by the cooling air temperature differential l believed I had found the problem. I then brushed away the dirt and noticed that the tool used to punch out the louvre slots left a very rough edge, it was to this edge that the fluff and stuff was adhereing. I also noticed that the gap of the slot was circa 1mm which exacerbated the collection of material.

    Solution. Take a large flat screwdriver and insert into the louvered slot, now push until the slot opens to circa 3mm. Make a mark on the screwdriver for consistency and repeat, left, centre and right of the slot. Now do this for all the slots. Refit panel.

    I immediately got my 4 degrees back, was real chuffed.
    Last edited by Andrew Leigh; 2019/07/23 at 08:46 AM.

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  3. #2
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    Default Re: Fridge Tip - Snomaster "losing" performance

    Can I send my fridge to you?

  4. #3
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    Default Re: Fridge Tip - Snomaster "losing" performance

    I'll do it on the hunt.

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  6. #4
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    Default Re: Fridge Tip - Snomaster "losing" performance

    What snomaster is this? Perhaps some pics for our technically challenged ones please...
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    Default Re: Fridge Tip - Snomaster "losing" performance

    i open my snowy and blow it it clean with a compressor ,but don't do it full blast ,you will be surprised what comes out of there

    this is a tip a saw in the righters veld and kgalagadi and it works to get the heat out in the compressor .
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  8. #6
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    Default Re: Fridge Tip - Snomaster "losing" performance

    On my fridge I found that the compressor and controller is just in a cavity. No path for air flow. So I added an extra fan on the side and blocked all the holes around it, with a plate. This fan forces the air into this cavity. The other fan can now just concentrate on the compressor. Plenty space to exhaust air, to both the front and the back. (The extra fan was from a PC powersupply. 250mW)
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  10. #7
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    Default Re: Fridge Tip - Snomaster "losing" performance

    Quote Originally Posted by JacoE View Post
    What snomaster is this? Perhaps some pics for our technically challenged ones please...
    OK here goes.

    72l in SS with a 32/40 split.

    Here is the panel as picture from the outside.
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    Here is the inside of the above panel already showing signs of dust build up despite the slot being opened.
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    Here is the panel brushed clean with the screwdriver inserted to illustrate how it was opened up. I pushed it in until the black tip was just hidden, there is some spring back.
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    While opening up I noticed that the evaporator cooling fins and the fan were getting clogged so will clean those now.
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    Good luck.
    Last edited by Andrew Leigh; 2019/07/28 at 12:28 PM.

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  12. #8
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    Default Re: Fridge Tip - Snomaster "losing" performance

    Quote Originally Posted by Andrew Leigh View Post
    OK here goes.

    72l in SS with a 32/40 split.

    Her is the panel as picture from the outside.


    Here is the inside of the above panel already showing signs of dust build up despite the slot being opened.


    Here is the panel brushed clean with the screwdriver inserted to illustrate how it was opened up. I pushed it in until the black tip was just hidden, there is some spring back.


    While opening up I noticed that the evaporator cooling fins and the fan were getting clogged so will clean those now.


    Good luck.
    How old is your fridge? and how often does it run?

    I just want to get an idea of how long the build-up took to form and how often one should open and clean it.

    PS. Thanks for the tip.
    Last edited by DC Polokwane; 2019/07/28 at 10:48 AM.
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  13. #9
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    Default Re: Fridge Tip - Snomaster "losing" performance

    Fridge probably 6 or 7 years? Last cleaned December 2017. On full time at home in non dust environment.

    It is in a cover, I am going to remove the mesh on the protective cover that is positioned over the air outlet. You would be amazed at how much that mesh restricts.

    I need to qualify that I do not do off road and the only dust would be roads in the Kruger National Park.
    Last edited by Andrew Leigh; 2019/07/28 at 01:05 PM. Reason: Added the last sentence

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  15. #10
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    Default Re: Fridge Tip - Snomaster "losing" performance

    this tip applies to all camping fridges that have a condensor fan setup.

    best is to clean it before every trip or 2 months if it is being used at home also.
    you will be surprised how quickly dust can build up and restrict airflow.

    Do quick blow out with a blower and if you in the mood use a soft brush or old tooth brush to rake the fins. paying attention to fin direction.
    dont squash the aluminium fins on the condensor flat.

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