Kegkingdom Brewpump 3000

[Shanna]

As far as I know the pump is not self priming so it's likely to be air in the headspace. I would recommend that you read the following article on chugger pumps & pay attention to the image with the bleeder valve.

https://www.love2brew.com/Articles.asp?ID=604

Basically by putting two ball valves on the output side the head space of the pump can be filled first. Then when the liquid has filled the head space open the bleeder valve to release any air, this should mean liquid flows out. When you get a continuous flow close the bleeder valve. Now your pump head is primed & you switch on the pump while @the same time opening the outflow ball valve & your pump should push the liquid out with out any problems.

I have adopted this design with my chugger & it works well. I also added an additional mod to the input side with three ball valves to allow me feed the pump from three different sources e.g. HLT, mashtun & boiler without having to detach the input sources.

Shanna

[darren996]

As Shanna saiid it's not self priming, I would say u are getting an air lock.

Turn pump off, open valve on the kettle . As long as the pump is at a lower level the pump will prime with liquid then turn on the  pump. Sometimes I will turn the pump on and off quickly 2 or 3 times, similar to what a braumeister does to prime

[DEMPSEY]

If you put a Tee piece on the outlet of the pump and fit a valve to it you can bleed the pump of air before you start the pump up. This liquid will flood the pump and thus you can then pump away.