装置检无压控制字投入，或者面板选择开关打到远方状态，检无压开入进装置，

Switch on the control word without pressure when the device is checked, or the panel selection switch is turned to the remote state, and the device is opened without pressure after checking, or the panel is switched on without pressure on the panel, and the device is checked without pressure. When the device is checked for no pressure and at the same time, both are switched on. When there is no pressure, the device first detects no pressure, if no pressure does not meet the conditions, the device checks the same period.

Device inspection no pressure control word input, or panel selection switch hit to a distant state, check no pressure into the device, or panel in place no pressure knob input, device inspection no pressure, when the device inspection no pressure and inspection of the same period of input, the device first detection no pressure, if no pressure does not meet the conditions, device inspection at the same time.

The device detects no pressure when the control word is put into operation, or the panel selection switch is turned to the remote state, and the device detects no pressure when the panel local no pressure knob is put into operation. When the device detects no pressure and detects the same period, the device detects no pressure first. If the no pressure does not meet the conditions, the device detects the same period.