open tested valve, closed the button on "pipeline operation table" (enclosed graph) for "filling gas valve" and "releasing valve", open "filling water valve" "left water (gas) filling valve" or "right water(gas) filling valve", start low pressure water pump. while the valve cavity is filled with water, close the pump. in terms of tested valve demand adjust pressure control value of electric contact pressure gauge (enclosed graph) (use the red indicator, the green dose not use). press "high pressure water pump start up" button, see its working phenomenon and observe whether action of auto-cease are normal, if has exceptionally, please contact us in order that we can offer service to customer timely.