Heat Exchange system circulates water through both sources and it has a radiator to cool down the water.
Besides the water reservoir it has a water filter and a de-ionizer cartridge which operates continuously.
It also has a flow switch to prevent the X-ray source from turning on if there is now flow of water (without cooling the anode would burn very quickly)
There is also electronic control of the pump, (see pictures for position of cable for pump control). The cable is labelled A179J5 and A179.
Uses distilled water (3 gallons)
The direction of flow is shown in the pictures.
A description of the production of x-rays is shown in the video.