Just give them a ring mate to double check but looks the job.
You just empty old stuff out into bin then refill it all the way to top and then lift it up bang it on floor will go down a bit then.Then bung the tube with lid in,i push mine down and turn it at same time when it gets to the thread bit turn it anticlockwise till it gets the grip of the thread and then tighten it up.Its really easy mate i searched it on youtube my 1st time and coppied it.
Another good tip is to get a funnel like you would use on drain from bathroom sink (bit at top) and place that in top off vessell and tip bag into that ,its much quicker.
Goodluck