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Forum: Motors & Motor Controls

Discussions related to the design, installation, and maintenance of AC and DC motors, and their associated controls

  1. Normal Thread Normal Threads

  2. 1075rpm 1/2hp condenser fan motor bad

    Started by 02JeepKing, 06-16-2013 04:13 PM
    2 Pages •
    1 2
    • Replies: 24
    • Views: 45,860
    mathesonequip
    02-15-2014, 11:59 AM Go to last post

  3. Rheostat and hard start kits.

    Started by 2hot4you, 07-18-2016 10:41 AM
    • Replies: 5
    • Views: 29,375
    JehanDM
    01-13-2021, 07:51 PM Go to last post

  4. VFD Enclosures NEMA 3 or NEMA 4 rated enclosures

    Started by airprep, 03-14-2015 01:43 AM
    • Replies: 2
    • Views: 28,797
    airprep
    03-25-2015, 12:18 PM Go to last post

  5. Square D Model 5 Control Center (MCC)

    Started by airsummit, 09-12-2023 01:08 PM
    • Replies: 0
    • Views: 18,049
    airsummit
    09-12-2023, 01:08 PM Go to last post

  6. Yaskawa z1000 drive

    Started by AJS HVAC, 02-29-2016 01:43 PM
    • Replies: 1
    • Views: 28,228
    AJS HVAC
    02-29-2016, 05:36 PM Go to last post

  7. Motor control issues

    Started by alexanderlev74, 09-02-2015 09:59 PM
    • Replies: 0
    • Views: 28,445
    alexanderlev74
    09-02-2015, 09:59 PM Go to last post

  8. Time delay timers explained.

    Started by anthonyac1, 03-31-2018 03:46 PM
    1 Attachment(s)
    • Replies: 2
    • Views: 25,395
    anthonyac1
    04-04-2018, 07:43 PM Go to last post

  9. 11 (not 12) lead dual voltage motor

    Started by Arayt, 04-06-2016 09:19 PM
    • Replies: 3
    • Views: 31,014
    reeferrat
    02-23-2019, 08:04 PM Go to last post

  10. PF Correction Capacitors

    Started by ascj, 07-28-2013 05:08 PM
    1 Attachment(s)
    • Replies: 6
    • Views: 11,905
    jbarron4
    07-31-2013, 09:04 AM Go to last post

  11. Hawkeye 458

    Started by blazey10, 05-02-2013 09:59 AM
    1 Attachment(s)
    • Replies: 2
    • Views: 6,704
    blazey10
    05-12-2013, 10:18 AM Go to last post

  12. VFD on side-grounded delta

    Started by bluke1, 12-17-2014 07:54 PM
    • Replies: 2
    • Views: 28,606
    jraef
    02-08-2015, 12:02 PM Go to last post

  13. Mystery Board

    Started by btucker62, 04-28-2013 11:23 AM
    • Replies: 2
    • Views: 6,255
    btucker62
    04-28-2013, 05:20 PM Go to last post

  14. X13 motor constant run!

    Started by CFLHVAC, 04-26-2013 11:15 PM
    2 Pages •
    1 2
    • Replies: 31
    • Views: 62,524
    ksefan
    12-13-2023, 10:17 AM Go to last post

  15. Soft starters

    Started by chander, 06-28-2018 09:50 PM
    • Replies: 4
    • Views: 26,881
    Palmer Hackle
    11-04-2018, 12:05 PM Go to last post

  16. Fan cycling switch wire short.

    Started by Clawed worm, 07-25-2016 10:28 PM
    • Replies: 0
    • Views: 25,359
    Clawed worm
    07-25-2016, 10:28 PM Go to last post

  17. Finding a motor?

    Started by dingo707, 06-20-2017 07:38 PM
    • Replies: 2
    • Views: 25,132
    Supa-Heat
    06-20-2017, 11:17 PM Go to last post

  18. Question regarding ECM motors.

    Started by few2many, 05-02-2020 04:00 PM
    • Replies: 13
    • Views: 36,310
    Swf
    05-04-2021, 10:41 PM Go to last post

  19. Condenser fan motor FLA

    Started by gallienus, 09-03-2020 10:09 PM
    • Replies: 6
    • Views: 28,688
    PowellSixO
    05-11-2021, 06:23 PM Go to last post

  20. ABB ?

    Started by gazoo, 10-29-2020 04:27 PM
    • Replies: 1
    • Views: 22,515
    dieseldude
    10-29-2020, 06:10 PM Go to last post

  21. ecm motors can the motor its self be replaced?

    Started by Geo Joe, 01-19-2014 06:59 PM
    • Replies: 1
    • Views: 28,080
    jtrammel
    01-19-2014, 08:03 PM Go to last post

  22. Compressor Inverters

    Started by GSHPP, 12-28-2019 06:13 AM
    • Replies: 1
    • Views: 24,431
    GSHPP
    12-28-2019, 06:22 AM Go to last post

  23. Equipment do not have or have mocp, mca

    Started by hhsting, 02-06-2021 08:02 PM
    • Replies: 3
    • Views: 26,823
    hhsting
    02-08-2021, 12:30 AM Go to last post

  24. Permanent Magnet DC Treadmill Motor

    Started by hurtinhvac, 02-18-2014 12:29 PM
    • Replies: 7
    • Views: 33,553
    IRBH
    02-23-2014, 01:18 PM Go to last post

  25. Counter-Rotating Fan Motor

    Started by ilostmydrink, 12-28-2014 05:21 PM
    • Replies: 1
    • Views: 27,558
    buford
    03-07-2015, 06:29 PM Go to last post

  26. Why use constant torque ECMs?

    Started by JimtheHVACguy, 07-24-2013 01:40 AM
    • Replies: 13
    • Views: 44,320
    ksefan
    09-25-2013, 10:25 AM Go to last post

  27. 3 phase voltage question

    Started by jmcgreevey, 08-11-2013 11:41 PM
    2 Pages •
    1 2
    • Replies: 26
    • Views: 44,467
    David Goodman
    05-31-2016, 11:32 PM Go to last post

  28. Rare Refrigeration Compressor Voltage Issue (Motor)

    Started by knishere2022, 04-19-2022 05:12 PM
    1 Attachment(s)
    • Replies: 6
    • Views: 26,573
    VTP99
    04-19-2022, 09:39 PM Go to last post

  29. GE ECM 2.3 Wiring

    Started by krips, 01-21-2022 06:08 PM
    • Replies: 3
    • Views: 22,413
    krips
    01-22-2022, 11:40 AM Go to last post

  30. Progremming a VFD

    Started by LMSystems, 12-26-2013 03:40 PM
    • Replies: 2
    • Views: 28,345
    Deercooler
    08-09-2014, 10:39 PM Go to last post

  31. Someone experienced in 3ph to single ph conversion ?

    Started by maximusvigor, 10-16-2016 07:24 AM
    2 Pages •
    1 2
    • Replies: 22
    • Views: 34,896
    HVAC_Marc
    10-24-2016, 11:27 PM Go to last post

  32. Premium Efficient Motors

    Started by meby, 01-31-2013 04:41 PM
    • Replies: 9
    • Views: 34,058
    hvacnut
    03-23-2022, 03:17 PM Go to last post

  33. Combustion blower fault

    Started by mockingbird, 07-24-2016 07:42 PM
    • Replies: 8
    • Views: 29,316
    beenthere
    07-25-2016, 04:13 AM Go to last post

  34. VFDs on ungrounded delta systems.

    Started by Randy S., 04-08-2013 09:18 PM
    1 Attachment(s)
    • Replies: 5
    • Views: 14,953
    jbarron4
    07-21-2013, 10:18 PM Go to last post

  35. Motor for Elevator

    Started by ranitupe, 01-06-2019 11:52 PM
    1 Attachment(s)
    • Replies: 13
    • Views: 28,387
    taltik
    03-23-2022, 06:18 AM Go to last post

  36. Cooling tower fan minimum speed

    Started by RezAtDorsia, 05-26-2016 08:42 PM
    • Replies: 5
    • Views: 28,143
    RezAtDorsia
    05-29-2016, 10:30 PM Go to last post

  37. Have you ecer experienced a motor do this?

    Started by Ricky Dale, 05-26-2016 06:27 PM
    2 Pages •
    1 2
    • Replies: 20
    • Views: 32,799
    IRBH
    08-01-2016, 01:29 AM Go to last post

  38. Single phase and Three phase motors

    Started by RIEIO, 05-15-2013 12:36 PM
    • Replies: 13
    • Views: 39,100
    Bill B
    11-29-2015, 09:15 PM Go to last post

  39. Hermetic Compressor Motor Issue

    Started by Ryan Babros, 11-13-2018 08:37 AM
    • Replies: 3
    • Views: 25,354
    DavidDeBord
    11-13-2018, 07:03 PM Go to last post

  40. Question on a 460V, 3 phase 50hertz pump motor

    Started by seathop, 10-10-2013 09:58 PM
    • Replies: 2
    • Views: 28,776
    genman
    12-15-2013, 04:19 PM Go to last post

  41. VFD's in rooftop units

    Started by Subcool215, 06-28-2019 08:21 AM
    • Replies: 7
    • Views: 29,931
    WAYNE3298
    06-28-2019, 09:39 PM Go to last post
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