Cleaning an external pump

[Formulator]

I run a large external iwaki return pump from my basement up to my DT. I haven’t done any maintenance/cleaning since I installed it 6 years ago. I imagine it could benefit from cleaning, but I’m not sure how to do that easily. Any tips or tricks? It is installed with unions so I suppose I can build a manifold to circulate water from a bucket, but I’m looking for an easy button…

 

[FUNGI]

Not your model, but I would assume 90% of it is what you would need to do.....
https://iwakiamerica.com/Literature/MDW/MDW_Manual.pdf

 

[Lavey29]

I wouldn't touch it if it is working properly for 6 years now.

 

[FUNGI]

^or that...LOL

 

[exnisstech]

I wouldn't touch it if it is working properly for 6 years now.

^^ doesn't get any easier than that.
I never cleaned mine but I ran reeflo so I had to rotate them out to replace seals every couple of years :face-with-tears-of-joy:

 

[Formulator]

Looks like I’m going to let it continue running without intervention! Works for me!