Pump impeller trim


  #1  
Old 10-29-21, 08:06 AM
N
Member
Thread Starter
Join Date: Oct 2021
Posts: 6
Upvotes: 0
Received 0 Upvotes on 0 Posts
Arrow Pump impeller trim

Hi
I have a Grundfos SP 230S50-1 pump which was running on a 5HP motor. The motor is all burnt but the pump end is still good. I want to use a 3HP or 2HP motor instead. Can anyone help how I can trim the impeller to run on a 2HP or 3HP motor?

Appreciate your help.
 
  #2  
Old 10-29-21, 09:11 AM
P
Group Moderator
Join Date: Mar 2003
Location: NC, USA
Posts: 25,938
Received 1,759 Upvotes on 1,572 Posts
Looking at the specs that is a low head, single stage pump. I do not know of anything you can do to make it work with a smaller motor. The pump and motor sections are matched so changing one usually requires changing the other.
 
  #3  
Old 10-30-21, 07:10 AM
N
Member
Thread Starter
Join Date: Oct 2021
Posts: 6
Upvotes: 0
Received 0 Upvotes on 0 Posts
Thanks, Dane.
The pump and motor follow 4'' NEMA standards coupling which means the pump can fit on any motor that follows NEMA standards.
It'd be easy on a casted impeller as they can be trimmed on a lathe machine and many videos are available for that on youtube. But I cannot find anything on the internet for a Fabricated impeller as they have in this pump.

I can calculate how much it should be trimmed to run on a 3HP motor, just don't know how to trim it.
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: