you know those kinds of pump/mixer combo's are cool as heck and it was fun watching this untill the operator did that with the ball sponge.

  I know if everything is operating as it should, when he lifts the grate it is supposed to stop the pump . But knowing what I know about these pumps this kind of practice is a potential accident waiting to happen.So to answear your question :Nope it is not safe to do what this operator demonstrated 

 double ended tip hose .

boom inspector- this is a rotary, with the grill up , the agitators off there is nothing that you can catch your hands on, its the same as puting the ball up the hose and sucking back, its just suction. All the moving parts to the pump are in the drum which is sealed. Ran one of these for a while and they are the cleanest pump around- zero mess if you want.

Yea I understand what ya mean Murf, but there is always 'that one time" when things go bad.Nothing wrong with just useing a peice of rebar to push it in , But operators know the risk so if you understand the hazard then you can deal with the problem .But those are very interesting pumps and the video was still fun to watch for me .

I would'nt put my hand near that agitator!
Not when you think how easy it is to drain the accumulator and stop the engine on EU putz's. Engine off button and hit the E-stop.
Those rotary pumps are fun to run, so quiet that the mixer drivers can be on the phone right next it...

pump n...

most of the time on a pumi the mixer driver IS the pump driver, so bein on the phone aint a good idea!!!!and if my memory serves me right there aint an accumalator on a rotary

I think its not a good thing to do. This video come from Denmark, are there someone from denmark that can coment on this, does everybody work like this in denmark?

is it the same kind of idea as an old squeeze crete? beacause thats how yo clean them out

hey guys, yeah that is a normal practice on a wibau, i would just fill it with water after he had put the ball in then pump it right through. there is no need to suck back.

pineos pumpin  yes that is the same as a squzzie just newer. squeezie, wibau, pumi all the same just different ages and technology.

 i run a pump like, that no moving parts thats i can trap my hands in when i am cleaning it , you are right murf clean clean pump no mess no fuss, i am left with 1/2 barrows of concrete after i am finished pumping, putz made mine its called a rolinethink it goes by other names in other parts of the world.     

happy new year every one!!!!!!!!!

Cool video.... So i'm not the only guy whose heart skipped a beat when the video showed the guy sticking his hand down in the hopper by the agitator?!

I do stupid shit like that all the time,  I used to be right handed, now they call me Lefty!