Back in 2004 I worked at a breakfast place that had a Meiko Door Machine.
I have to say it was very cheaply made. The Wash manifolds that fed the upper spray arm was made of plastic. This is poor build quality because most dish machine operators don't give a rat's ass about the machine and are usually pretty rough on the machines. I was told by a service tech that to replace that manifold (at the time) was roughly $600.
The machine had a Wash Pump and a Rinse Pump. The Rinse pump seemed to develope leaks every 5 months or so. This machine also had a "Pan" that all the pumps and valves sat in. If a leak were to develop, the entire machine would shut down due to the Flood Protector sensor like the Miele Waterproof system. Now that is a pain in the ass when you have a tiny leak that could be mopped up or put a pan under it until the tech arrived. Losing a piece of equipment that importand during a busy rush was horrible.
The door handle which was stainless cracked and broke at the weld. Which was another inconvenience as the entire wash chamber "Hood opened as one piece and was heavy as compared to other door machine that had doors on a counter balance system.
The pump housings were plastic as well.
Now the good points of this Meiko...
It washed extremely well when it was working. It had three wash programs.
A short wash which I think was around 45 seconds
Normal which was around 65
Intensive which was around 2 minutes.
This machine maintained very good hot water for wash and rinse. It would clean hood filters on the Intensive flawlessly. (Of course the right chemicals too)
The machine video that Nick posted is totally genius engineering. But... I wonder how dependable it will be under extremely heavy use ???
Here is the PDF from the Meiko I used...