1、低压开关 缺水保护开关,自来水停水，水压太低，预处理滤芯堵塞等原因，造成水泵吸空时，低压开关（常开触点）提供电信号给制水系统，机器报警并停止造水。 1, low voltage switch water shortage protection switch, water stop water, water pressure is too low, pretreated filter core blockage and other reasons, causing pump suction air, low voltage switch (often open contact) to provide electrical signals to the water system, the machine alarm and stop water. 2、稳压泵 2, steady pressure pump 为RO膜提供大于渗透膜的压力一般为4.5~6公斤压力。 The pressure for RO membrane to provide more than osmotic membrane is generally 4.5~6 kg. 3、 进水电磁阀 3. Water inlet solenoid valve （1）RO机进水电磁阀：在系统停止制水时，切断系统水源，防止自来水压力作用下，水慢慢透过RO膜造成废水流不停。 (1) RO inlet electromagnetic valve: when the system stops water making, the water is cut off and the water pressure is prevented. The water is slowly permeable through the RO film. （2）管线机进水电磁阀：为温水箱水位高低制水系统提供信号防止水箱溢水。 (2) inlet solenoid valve of pipeline machine: signal for water level of high temperature water tank and water supply system to prevent overflow of water tank. 4、 高压开关 4, high voltage switch 自动制水和自动停机的控制开关，压力桶压力为2.5公斤时，断开电路，停止制水，压力桶压力小于2.5公斤时接通电路，开始制水。 Automatic water and automatic stop control switch, pressure bucket pressure of 2.5 kilograms, break the circuit, stop water, pressure bucket pressure less than 2.5 kilograms when the circuit, start water. 5、 冲洗电磁阀 5. Rinse the solenoid valve 在制水系统每次开始制水时打开，让水快速流过RO膜表面，冲洗18秒，避免膜堵塞，延长RO膜寿命。 When the water system starts to open water, open the water quickly through the surface of the RO membrane, rinse for 18 seconds, avoid membrane clogging and prolong the life of the RO film. 6、 逆止阀 6. Reverse check valve （1） 使储水桶内的纯水不回流，以免产生背压。 (1) the pure water in the storage tank is not reflued, so as to avoid backpressure. （2） 是高压开关的前端闸口，使高压开关所受压力始终与压力桶内压力保持一致。 (2) is the front gate of the high voltage switch, so that the pressure of the high voltage switch is always consistent with the pressure in the pressure barrel. 7、 废水比例器 7, waste water proportioning （1） 按定量排放废水。 （2） 保证RO膜的制水压力大于逆渗透压力。 (1) discharge the waste water according to the quantity. (2) ensure that the water pressure of RO membrane is greater than that of reverse osmosis.