Vacuum Pump and Air Compressor

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  • sam_sam_sam
    ZD-915 vacuum pump motor mount service alert
    by sam_sam_sam
    If you have this Desoldering Gun Station there is something you should be aware of the two screws that hold the motor to mounting for pump can come loose and make raddling noise

    One note this unit has been repaired already once because of switching power supply regulator ic chip failure
    Now this with the vacuum motor mounting issue yes I give this Desoldering station a very hard work out and use about every weekend to do some type of project

    The fix is taking the vacuum pump assembly out and take the metal cover off and you will see the two screws on it
    ...
    09-19-2021, 02:15 AM
  • flat-earther
    Hoover FM216LI cordless vacuum refuses to charge
    by flat-earther
    I have a Hoover FM216LI cordless vacuum which isn't charging its internal battery.

    I opened up the unit, and it has 6x Samsung ICR18650-22P cells connected in series.
    5 cells were at about 3.3-3.1V. one was at 2.4V, so I assumed this cell was bad that's why the vacuum wasn't charging so I replaced it with another 18650, but after that the problem still persists, the vacuum turns on a bit and then cuts out since the batteries are empty.

    So I think the over discharged battery wasn't the culprit, it was a symptom of the unit not being able to charge its batteries....
    06-06-2025, 03:14 AM
  • unimatrix93
    LG fridge compressor not starting
    by unimatrix93
    Hello everyone, my old but loved LG GR-642 stopped cooling and frosting all together.
    The display shows everything as normal, the focused cooling activated when I open the doors but the compressor wont start.

    First I measured the terminals on the compressor at the back of the fridge. 0 volts.
    Now I disconnected the compressor and measured resistance on its leads: around 8 ohms.

    I dissassembled the main powerboard, couldn't find anything suspicious but I noticed that the comps relay wont send voltage to the pin, while Fan H and fan L is indeed at 230V....
    11-22-2024, 03:27 AM
  • notallbad
    Heat pump tumble dryer regas
    by notallbad
    Just wondering if anyone has successfully attempted a re-gas on a heat pump tumble dryer.

    The dryer currently in question runs on R134a.
    The dryer has been completely stripped down/cleaned/tested and re-assembled however there is no heating/cooling effect so working on the assumption it requires re-gassing. Of course, its likely theres a leak which would require soldering or even the possibility that the compressor has an internal fault even though it is running.

    I was thinking of getting a car aircon regas kit or probably easier but slightly dearer an hvac...
    07-16-2023, 01:27 PM
  • AlexVG
    Replacing the WiFi module on a vacuum cleaner iROBOT i7
    by AlexVG
    Hi,
    I have had an iROBOT i7 with a camera error (error 68) version REV M, year 2018.

    I bought a liquid damaged Mainboard with WiFi module, from the same vacuum cleaner, but a different year and a different version (REV G).
    (This board does not respond, only the LEDs light up in a circle.
    The liquid damage is catastrophic and restoration is impractical).
    (I bought this board to get the WiFi module and camera).

    The boards are completely different in the installation of elements, even the connector for the WiFi module is different.

    If...
    10-22-2024, 07:20 AM
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