... worm, gear pumps, high-pressure pump, relief valve, manual valve, cylinder assembly, pipe joints and other parts. ... turn off the thermostatic switch.2.The wrench handle of the top ejector plate should be opened ... drained completely.8. Starting:hold the handle to push down the manual valve, allowing chamber to drop ... mm from the upper cover. Hold the manual valve handle to open the roof cover.9.Stopping: ...