1. Valve leakage phenomenon, this is due to the pressure of the valve tight nut seal is caused by the tight wrench.
2. Ice blocking phenomena, in general, in the booster coil, and sometimes in the drainage tube, this is due to the air in the water into the container, not fully discharged, at low temperature condensation into ice, blocked the pipeline caused. The solution is to first charge nitrogen from the nitrogen bottle into the container. The pressure inside the vessel rises to the 0.05MPa-0.09 MPA, emptying the liquid medium inside the container; then, using hot nitrogen or dry hot air to blow the ice plugging pipes, blow the ice and drain, shut down all valves can be.