The TURCK pressure sensor acts as a pressure switch. When you set a pressure value, water is injected to produce water pressure, and when the pressure value is reached, electricity is automatically applied. Reach the switch function washing machine water level switch is divided into electronic (adjustable resistance) and switch type two, they are through the water level rise produced by the air pressure through the pipeline to the sensor to change the resistance or the internal switch on to make the computer action, it will be damaged after water injection is not allowed, long water injection does not move (operation), Drain the water without draining it (this is rare because the sensor is out of position). During maintenance, attention should be paid to check whether the pipeline is broken, whether the seal is good at both ends, whether the sensor is leaky. When checking the sensor, the air can be blown into the air by the mouth from the air inlet at the same time, and whether the resistance value at both ends of the sensor is changed or whether the switch is connected. The screw above the switch type sensor is used to adjust the level of water injection.