I'm confused about capacitor for a blower motor


Results 1 to 5 of 5

Thread: I'm confused about capacitor for a blower motor

  1. #1
    Registered
    Join Date
    Nov 2009
    Location
    usa
    Posts
    79
    Downloads
    0
    Uploads
    0

    Default I'm confused about capacitor for a blower motor

    I bought a small blower a while back & never was able to figure out what capacitor to get for it.
    web search returned too technical info for my level


    Ametek Rotron propimax 3BL part no 041037 series 763ZH
    115 volt ac
    60 hz
    1 phase
    .13 amp
    3450 rpm
    PH. SEQ

    Cap 0.5 (with no u or F) so am I right in assuming it is .5F?
    has a small wiring diagram [see photo (fixed type capacitor ?)]

    I buy from digikey so if someone can point me to a solution, part no greatly appreciated.
    Also which wire connects to black? yel or red?
    Thanks in advance

    Similar Threads:
    Attached Thumbnails Attached Thumbnails I'm confused about capacitor for a blower motor-picture-9-jpg  


  2. #2
    Community Moderator Al_The_Man's Avatar
    Join Date
    Dec 2003
    Location
    Canada
    Posts
    24216
    Downloads
    0
    Uploads
    0

    Default

    If it was 5F you wouldn't be able to get it into your shop!!
    It is most likely 0.5µf
    Make sure you get AC motor run rated cap, a oil filled paper is typical type.
    You can also get them at a local rewind shop.
    The cap goes across RD and BE, whatever they are.
    Al.

    CNC, Mechatronics Integration and Custom Machine Design

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.


  3. #3
    Registered
    Join Date
    Nov 2009
    Location
    usa
    Posts
    79
    Downloads
    0
    Uploads
    0

    Default

    okay, so I go to digikey and search for 'capacitor' too many choices and none say oil filled paper
    so I search for 'oil filled paper' - nothing
    then I search for 'AC motor run' - returns 'film capacitor' as one choice
    filter for 0.5uF
    and I get 4 capacitors, all motor run type, but they are rated:
    440-700 volt AC and are 2.160" L x 1.310" W x 2.250" H
    costing $12-20

    really?
    the motor is less than 1.25" in diameter & less than 1.75" long
    the blower is 3.75" overall diameter
    the wires are only 20-24 gauge
    Does this blower really need a capacitor that is larger than the motor?
    And does it matter which way the capacitor is connected to the red & blue wires?

    Last edited by bigspike; 03-09-2014 at 04:48 PM. Reason: spelling


  4. #4
    Community Moderator Al_The_Man's Avatar
    Join Date
    Dec 2003
    Location
    Canada
    Posts
    24216
    Downloads
    0
    Uploads
    0

    Default

    For a small motor You may get away with metalized polypropylene, for cheaper.
    Polarity does not matter.
    R46KI347000N0M Kemet | 399-5463-ND | DigiKey
    Al.

    CNC, Mechatronics Integration and Custom Machine Design

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.


  5. #5
    Registered
    Join Date
    Nov 2009
    Location
    usa
    Posts
    79
    Downloads
    0
    Uploads
    0

    Default

    thanks



Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  


About CNCzone.com

    We are the largest and most active discussion forum for manufacturing industry. The site is 100% free to join and use, so join today!

Follow us on


Our Brands

I'm confused about capacitor for a blower motor

I'm confused about capacitor for a blower motor