[trapae]

I just finished my 15th batch using my chugger pump.   Prior to buying it I did a lot of online trolling research on how to clean the thing and a decent amount of people just said run PBW through it followed by clean water.   Just wanted to say that I have taken mine apart every batch to clean it (because I'm super anal) after running PBW and water through it, and not once has it been perfectly clean. I have always found hops etc. in nooks and crannies.  Just my two cents.   
--I love the pump by the way, it is saved my back. I use it to transfer all of my fluids throughout the whole brew day.   Really good addition.
T

[kramerog]

I will probably not take apart my chugger often (just bought one), but I do plan to run boiling wort through it for a few minutes before doing transfers.  Heat can sanitize dirt. 

[trapae]

 Agreed on the boiling wort, I have a whirlpool arm on my chiller so I run the wort through the pump the last 10 minutes of the boil anyway while sterilizing my chiller..   Then I use the whirlpool arm for Whirlpool hopping and then to help with chilling as well.   I still can't stand to know that there are old particles stuck in there even though I'm running boiling wort through it.  ...OCD

[mabrungard]

My pump is used only for hot-side wort transfers, so sanitation is of no concern. I've only taken my pump apart every few years and there has never been anything in it.