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Microwave cooling fan help

Discussion in 'Troubleshooting and Repair' started by Bowmeat, Feb 16, 2020.

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  1. Bowmeat

    Bowmeat

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    Feb 16, 2020
    Hi all .my cooling fan has gone in my microwave. So I have ordered a new one but when its arrive it has 3 connections whilst the old one had 2 connections . Am I still ok to use it and which 2 connections should I use
     
  2. Ylli

    Ylli

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    Jun 19, 2018
    You're giving us zero information to go on. What microwave did it come out of? Part number of the old and replacement parts? Pictures?
     
  3. Bowmeat

    Bowmeat

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    Feb 16, 2020

    Screenshot_20200216-231607_eBay.jpg

    Screenshot_20200216-231742_Gallery.jpg
     
    Last edited by a moderator: Feb 17, 2020
  4. Bowmeat

    Bowmeat

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    Feb 16, 2020
    3 pin one is the new 1
     
  5. davenn

    davenn Moderator

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    Sep 5, 2009
    So why would you buy a 3 pin one when the original was 2 pin ?
    You still haven't said what make and model of microwave oven ?
    does the old motor have an info label on it ?
     
  6. Bowmeat

    Bowmeat

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    Feb 16, 2020
    Russel hobbs
     
  7. Ylli

    Ylli

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    Jun 19, 2018
    There was a thread either here or on another forum and it was determined that the third terminal on the fan motor was often used to drive the turntable motor (or was it the lamp - anyway...). The fan coil acts not only as the field for the motor but also as a transformer to reduce the voltage for the turntable motor (or lamp)

    I see the motor is listed at 240 VAC. Is this going to be installed in a uWave on a 240 volt circuit? Then just measure the resistances between the three terminals, pick the 2 with the highest resistance, and hook them up.
     
  8. Ylli

    Ylli

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    Jun 19, 2018
  9. 73's de Edd

    73's de Edd

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    Aug 21, 2015
    Sir Bowmeat . . . . . .

    All right . . . . . here is the full poop.
    That GALANZ motor that you received is using the larger two terminals for your t 220-240-VAC power input.
    There is the smaller end terminal for an optional derived secondary voltage output from the unit if you use the center terminal and the smaller for outputting a reduced 30VAC secondary output voltage,
    That is obtained autotransformer style by utilizing the motor metal framework core, the shared existing magnetic field and an internal ratiometric tap off from the total winding, to get the reduced 30VAC.
    (And NO . . . if you get the two wires reversed, it won't run backwards .)
    This three terminals aspect wouldn't concern you at all, in starting with a TWO terminal motor, so use the two larger terminals.

    upload_2020-2-17_2-1-20.png

    73's de Edd . . . . .

    I had amnesia once . . . . or was it twice ?



    .
     
  10. davenn

    davenn Moderator

    13,654
    1,888
    Sep 5, 2009

    since you cant be bothered to answer questions properly
    from the people that are trying to help you
    You have made this way harder than what it needed to be !


    I'm closing the thread

    Thread reopened and other posted merged into this thread
    (23/02/2020)
     
    Last edited: Feb 22, 2020
  11. Bowmeat

    Bowmeat

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    Feb 16, 2020
    Hi all I've replaced the cooling fan in my russel hobbs microwave .chànged the 2 plug motor to a 3 plug one . But been advised that's ok . Sorry for the late reply on my previous thread which got deleted . The new fan is now working . But it only starts with a clicking noise like a relay from a car .
    . Tried up pics . But no joy
     
  12. Bowmeat

    Bowmeat

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    Feb 16, 2020
    This all fault has been made by my missus leaving a fork in their
     
  13. Bowmeat

    Bowmeat

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    Feb 16, 2020
    20200222_170233.jpg
     
    Last edited by a moderator: Feb 22, 2020
  14. Bowmeat

    Bowmeat

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    Feb 16, 2020
    More pics
     

    Attached Files:

  15. davenn

    davenn Moderator

    13,654
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    Sep 5, 2009
  16. Bowmeat

    Bowmeat

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    Feb 16, 2020
    Hi all sorry for the late reply . As in uploading the pictures .it wont let me do it from my phone gallery without screen shoting and shrinking . Now the new fan has stopped working . I've been reading up on the problem but iam thinking throwing the talwol In
     
  17. 73's de Edd

    73's de Edd

    2,922
    1,235
    Aug 21, 2015
    Sir Bowmeat . . . . .

    Use an AC voltmeter and check across the two motor terminals to confirm that FULL AC line voltage is being there to run the unit.
    Then, also pull the blade and test the running motor shaft for torque , using index finger to thumb gripping of the then naked motor shaft.

    That unit should spin the multibladed fan blade easily, just being a bladed fan, considering it also is not experiencing any binding or constrictions.

    ASIDE . . . . .

    I saw Bowmeats information coming forth quite correct and timely . . . with one possibly only being thrown by the lower case Russel hobbs, branding .

    Of which, that was being a brand that I had never " heered " of before.

    Of course some people may have never " heered " of our lil' ole neighborhood store run by Stanley Marcus and his aunt Carrie Neieman . . . . . .

    https://moneywise.com/a/20-outrageous-items-from-the-neiman-marcus-catalog



    73's de Edd . . . . .

    Man Fact . . . .
    It's impossible for a man to use a stud finder . . . if having an observing audience . . . . without him initially first swinging it all around on himself and saying . . . beep - beep - BEEP - BEEP - BEEP - BEEP - BEEP !

    .
     
    Last edited: Feb 23, 2020
  18. Bowmeat

    Bowmeat

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    Feb 16, 2020
    It's like the switch that turns the fan is faulty. With the clicking noise . Where would it be locateď
     
  19. duke37

    duke37

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    Jan 9, 2011
    If the fault were due to a fork being left in the microwave, it is likely that the RF generator has been damaged.
    The motors are maiins voltage and can be tested outside the microwave. They may not run in the microwave due to a fault elsewhere.
     
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