Results 1 to 7 of 7
  1. #1
    Join Date
    Apr 2009
    Location
    massachusetts
    Posts
    66

    motor master install

    Hey guys, Have some basic A C condencing units and where installing motor-masters to control head preasure. Was wondering who leaves the factory sleeve bearing motors in and who puts in ball bearings ones.Was told sleeve ones will fail after a year. You opinions please.

  2. #2
    Join Date
    Nov 2004
    Location
    up in the hizzy
    Posts
    1,376
    I bet the motor master will fail before the sleeve bearing motor does.

  3. #3
    Join Date
    May 2010
    Location
    Oxford, UK
    Posts
    336
    Check with the motor manufacturer to see if they are suitable for variable speed control.

  4. #4
    Join Date
    Apr 2009
    Location
    massachusetts
    Posts
    66
    I used to like using the old Ranco pres. controls to control pressures but dont see manafacturers recommending them anymore.

  5. #5
    Join Date
    Apr 2005
    Posts
    82
    Would be safer on that application to just use the on/off pressure switch.

  6. #6
    Join Date
    Nov 2002
    Location
    NJ - WORK IN NYC AREA
    Posts
    1,447
    Get the ICM or Americian Tech speed controls. Good for both sleeve and bearing.
    "My hands are for sale"

  7. #7
    Join Date
    Jul 2007
    Location
    Delta BC Canada
    Posts
    89
    As mrhavacmechanic stated look into the ICM control , make sure it is set for the type of bearings you have in the motor.
    All that will happen ,is a sleeve bearing will go to full speed for a brief time then reduce in rpm's. (I was told this was to ensure that the sleeve bearing was properly lubricated.) May have to relocate the sensor to find the best place to sense, but once dialed in
    , have not had any problems.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event