What should be paid attention to in normal maintenance of medical multi effect distilled water machine

What should be paid attention to in the normal maintenance of medical multi effect distilled water machine? Let's take a look at the following: 1 Requirements and principles of cleaning When the water production of medical multi effect distilled water machine is obviously reduced in the use process, or obvious scaling is found in the tower in the routine inspection, cleaning should be carried out The main reason of scale formation is that the residual inorganic salt in feed water contacts with the inner wall of the equipment for a long time and forms under high temperature and pressure II There are two types of scale and corresponding cleaning agent One is boiler scale, the other is silica scale Different cleaning agents shall be used for cleaning: 1 For boiler scale, sulfamic acid (nh2so2oh) can be used When using, deionized water is used to prepare a cleaning solution with a concentration of 1% Its pH value is between 1 and 2, and it is heated to about 60 ℃ Phosphoric acid (H3PO4) can also be used When in use, deionized water is used to prepare a cleaning solution with a concentration of 2%, and it is heated to about 65 ℃ 2 For silica scale, ammonium difluoride (NH4HF2) can be used When it is used, deionized water can be used to prepare a solution with a concentration of 1.5%, and heated to 50 ℃ ~ 60 ℃ Sodium hydroxide + anionic active agent can also be used to prepare a cleaning solution with a concentration of 10% and heated to about 60 ℃ In the chemical cleaning method to remove the above two kinds of scale, many users also use the general-purpose stainless steel cleaning agent, the effect is good, and the use is more convenient After cleaning with acid solution, neutralization solution is generally required The neutralization solution was prepared by adding 0.5% sodium bicarbonate (hahco3) and 0.1% anionic surfactant into deionized water 3 Special equipment shall be prepared before cleaning the cleaning equipment, mainly including: 1 The capacity of storage tank shall be greater than the amount of cleaning solution required by Zui For the sake of safety, the storage tank shall be provided with a cover The cover is equipped with a sight glass (to observe the reflux of cleaning solution) and a vent hole The storage tank shall have heating function, such as heating jacket or immersion heater It should be noted that the cleaning solution cannot be heated directly with the pure steam from the boiler steam or distilled water machine, which will change the concentration of the cleaning solution 2 The circulating acid resistant pump adopts an acid resistant pump with a pressure head of 2.5kg-3kg and a flow rate of 100 L / min 3 The connecting hose is used to connect the storage tank for cleaning and the distilled water machine into the cleaning circuit, and the hose shall be acid resistant and pressure resistant The above is about the maintenance of medical multi effect distilled water machine.