Check rotation.

Reply

  #1  
Old 08-25-15, 03:53 AM
Member
Thread Starter
Join Date: Oct 2014
Posts: 516
Check rotation.

The pump im installing says "rotation should be clockwise" if flow "appears low" invert any two wires.

Is that really the best way to do this?

I'm putting it in in a fixed instalation, and 3" hoses cost a lot just to check this out. Is there a way I could use my multimeter or some other tool to check this out. I suppose I could install it like a fountain in the pool and see which shoots water higher in the air, but it seems like there should be a simpler way.

Help a relative novice.
 
Sponsored Links
  #2  
Old 08-25-15, 04:11 AM
Tolyn Ironhand's Avatar
Group Moderator
Join Date: Nov 2007
Location: Twin Cities, MN
Posts: 11,981
It sounds like you are working with a 3 phase motor. If that is the case then yes, turn off the power and switch any two wires at any location (IE: circuit breaker, disconnect, motor terminals)

There should be some location that you can see which direction the pump is turning. Just bump the motor for a split second to see which way it is going.
 
  #3  
Old 08-25-15, 04:37 AM
Member
Thread Starter
Join Date: Oct 2014
Posts: 516
It's a submergible pump. And the manual even includes the note "don't run dry to check rotation"

But it also says Max run time w/o water 2 min. So...
 
  #4  
Old 08-25-15, 05:45 AM
Forum Topic Moderator
Join Date: Feb 2005
Location: Near Lansing, Michigan
Posts: 10,292
Just bump it for half a second. That won't hurt anything. Make sure you label the phase conductors well so you remember rotation direction once it's in the hole. Also moving position of the breaker in the panel could cause rotation to change direction, so label, label, label!
 
  #5  
Old 08-27-15, 05:15 AM
Member
Thread Starter
Join Date: Oct 2014
Posts: 516
Thanks guys! I managed to figure it out, indeed, nothing appears to be harmed from making it run half a second. I assume they put that in the manual as standard CYA. Now for the controller but thats another thread...
 
Reply

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
Display Modes
'