Added: 1 year ago
From: pexring
Views: 53,922
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  • can a contactor pull in and still be bad?

  • Very helpful . Thanks a lot !!

  • good job! I worked for 3yrs troubleshooting contactors and other standard control components. Another tip is if the contactor doesnt pull in and its fed by a transformer, make sure the transformer has enough VA capacity as a coil requires a certain amount of "pull in" current to initially close the contactor.... not always a contactor problem.....just a heads up....but great vid!

  • pexring you rock. I work for Roth Bros as a systems analyst/programmer doing EMS remote HVAC & lighting and this simple video has taught me a great deal about a very important component, thanks !

  • great job

    

  • A Relay will normally have a 'Common', 'Normally Closed' and Nornally Open' contacts a Contactor will just have open contacts - YMWV

  • So, basically, a contactor is just a relay.

  • I heard a rattling noise and went to check on it. I opened up the panel (after all power was shut off) and then turned on the furnace. The contactor was making the noise and the contact piece was moving up and down causing the noise. What can cause this and can I purchase another contactor and replace it?

  • nice set up there what did you use to power up your transformer in the video i saw it look like it was nail down to the board

  • its helped me alot thxxx

  • isn't this the same thing as a relay?

  • You totally answered my question, thank you for the info.

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