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  1. #1
    Join Date
    Jul 2013
    Posts
    3

    Replaced condenser fan with higher-CFM model.

    Hi all,

    I own a cheap (no manufacturer name even) Red Bull merchandizing cooler that I use as a fermentation chamber for homebrewing beer. I have it wired with a Ranco digital thermostat for precision temperature control, and the fridge sees a very light duty cycle due to the fact that beer fermentation happens between 50 and 70F.

    Last week, the condenser fan assembly (120x120x38mm, .2A @ 115V, 71CFM) started making a bad racket due to the bearings failing. I got a replacement fan assembly, but I got one with 105CFM airflow because that was the part I could easily locate in town. I checked the wiring to make sure it could sustain the extra amps, so I'm good on that end.

    Here's my question:
    Is upping the CFM of the condenser fan going to put undue stress on the compressor or any other part of the system, due to enhanced heat exchange at the condenser?

    I read over the DIY rules for the site and I think this question is within-bounds, but I apologize in advance if I've actually broken the rules.

  2. #2
    Join Date
    May 2003
    Location
    Utah
    Posts
    718
    Let's see...replace failed part with new part that has different specifications and then ask qualified technicians if there is a problem with this...

    Versus...


    Hiring qualified tech to do the work.

  3. #3
    Join Date
    Jul 2013
    Posts
    3

    Frown

    Quote Originally Posted by bunny View Post
    Let's see...replace failed part with new part that has different specifications and then ask qualified technicians if there is a problem with this...

    Versus...


    Hiring qualified tech to do the work.

    Hey man, you can lose the snark.

    I just asked a straightforward question in a polite manner.

    Forget about it, anyway. I got an answer from someone else.

  4. #4
    Join Date
    Oct 2008
    Location
    mid-Tennessee
    Posts
    684
    Quote Originally Posted by marinosr View Post
    Hey man, you can lose the snark.

    I just asked a straightforward question in a polite manner.

    Forget about it, anyway. I got an answer from someone else.
    URBAN DICTIONARY:

    snark noun
    Combination of "snide" and "remark". Sarcastic comment(s).
    Also snarky (adj.) and snarkily (adv.)
    *
    *
    *
    *
    Well HE came in with his guns loaded.

    SEE-YA - A - A - A - a . . . . . . .

  5. #5
    timebuilder's Avatar
    timebuilder is online now AOP Committee/Professional Member*
    Join Date
    Nov 2006
    Location
    Southeastern Pa
    Posts
    17,814
    Please refrain from allowing the portal closure to impact your posterior....
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist

    AOP Forum Rules:







  6. #6
    Join Date
    Aug 2006
    Location
    Colorado
    Posts
    304
    If he understood all the different characters and equipment we have to deal with day in and day out, not to mention the miracles we are expected to perform for the least $$ amount, he would be full of snark too....

  7. #7
    Join Date
    Jun 2013
    Location
    Atlanta, GA
    Posts
    39
    My dogs name is Snarky, come to think of it, my mother-in-law has been a little snarky lately..........

  8. #8
    Join Date
    Mar 2013
    Posts
    44
    Lmao. The coil is going to freeze up and he'll be back on here asking why CFM effected what's going on inside the box. Good OL consumer 'save a buck' mentality.

  9. #9
    Join Date
    Mar 2013
    Location
    swan valley idaho
    Posts
    719
    And then he won't tell the new tech he finally calls the fan is wrong, which will cause him to spend more time than necessary, which will cost him more money after all......
    DIY and save!

  10. #10
    Join Date
    May 2003
    Location
    Utah
    Posts
    718
    Laughing' my snarkin rear off.

  11. #11
    Join Date
    Feb 2008
    Location
    California
    Posts
    2,064
    When I was younger, I used to watch The Snorks.

    Are Snarks anything like Snorks?

    Name:  snorks.jpg
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  12. #12
    Join Date
    Jun 2013
    Location
    NORTHERN
    Posts
    989

    OEM Herm Cans to semi ? today? right cdsr spec.....

    Hey B :
    in that avt pic of yours, are the 15 to 25 t tin can hermetics/ recips or scrolls holding as well as the semi in any professional chillin' ?

    I will use either the OEM cdsr fan condition DX-cfm specified; or water-cooled-hybrid-to-dry-cooler-Earth-Coupled-Ground-Loop-GlobalThermaXchange(GTX(tm)) connected exchange system , OEM of course...

    How are the cans holding up?
    I have constant duty "chillers" making HW since 1981 and used for chilled-W:cooling/ HW: space-heating to a same 7.1/2ton air coil, a HW tank, and a 5T tube-in-shell flooded evap HX as well on Erie 3way hydronic valve automation, outlasting bronze circulators that failed in 26 years.
    But these cans are only up to 4.tons on the hermetic label.
    Last edited by GT1980; 07-18-2013 at 12:38 AM. Reason: corrected a number
    ... however, much work still needs to be done.
    CLOSED LOOP newer ratings are listed, but in numerical EER's Closed- is posted below OPEN LOOP EER's:

    http://www.energystar.gov/productfin...r=0&lastpage=1

  13. #13
    Join Date
    Jun 2013
    Location
    Austin, TX
    Posts
    641
    More airflow should not cause a problem. The compressor will not be working as hard. Whether the efficiency goes up or down depends on many factors, but it's unlikely to be significant. It will slightly increase the minimum operating temperature, but a low ambient control will fix that.

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