TravisR100
Cast Iron
- Joined
- Aug 7, 2006
- Location
- Houston, TX
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Among the "fast and cheap" tests could be to place another 3-P device on the same RPC, running unloaded - and see if the 1020's motor is less growly if operated with the other load effectively acting as a supplementary idler.
I’m not sure how to check the points but I’m sure I can do some googling. Could that even be the problem if I’m getting the proper voltages measured after the contactor? Amps also seem to be equal across each leg coming from the phase converter with the machine running.
Sent from my iPad using Tapatalk
IF.. the mag-starter's "contact points" are worn and/or.. especially if the actuating coil is on the generated - read "variable under load" leg .. it could be vibrating or "bouncing" in and out on one or more legs.
Now . a dropped-phase on a 3-P motor balks at cold start - but they keep on running if motating much at all if/as/when one phase (or more than one) drop-out whilst rolling- especially if it is only an intermittent drop-out, soon restored.
"Good luck" would be to find that the coil IS on the generated leg and just swap that - at the connection to the machine usually easier than inside the mag starter, FWIW.
That last part is easy enough to JF try it and see if it makes the growl go away - no further detective work required.
Test the contactor from the inlet to the output side with a multimeter. With the power off of course, push the contact together and check the resistance between in and out on all the legs. The voltage going to the motor is what you want to measure.
Good catch!
I didn't know it had such a critter, but that clatter CAN BE characteristic to either a Warner or Dings brake seeing a momentary drop as to hold-off. Those I DO have. Most of us have heard it on automotive AC compressor clutches, too. Same tribe, conceptually - different Voltage.
Notice
This website or its third-party tools process personal data (e.g. browsing data or IP addresses) and use cookies or other identifiers, which are necessary for its functioning and required to achieve the purposes illustrated in the cookie policy. To learn more, please refer to the cookie policy. In case of sale of your personal information, you may opt out by sending us an email via our Contact Us page. To find out more about the categories of personal information collected and the purposes for which such information will be used, please refer to our privacy policy. You accept the use of cookies or other identifiers by closing or dismissing this notice, by scrolling this page, by clicking a link or button or by continuing to browse otherwise.