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Double tube plate multi-effect distilled water machine operation requirements
(1) Pay attention to sufficient purified water during operation and strengthen the on-line monitoring control of feed water, the conductivity is less than 2μS/cm; the pH must be 5-7, free of silica and chloride ions, otherwise long-term operation Corrosion can occur and leak. Check microbiological and chemical components, such as sampling the activated carbon filter before and after, monitoring the residual chlorine and microbial content in the water; testing the softening effect of the resin (changes before and after water hardness treatment). Unqualified water is diverted to the wastewater unit.
(2) Pay attention to the overflow of the evaporator, visually check the multi-effect distilled water machine or automatically display the water level of the high water; pay attention to the unvaporized water mixed into the distilled water due to improper control of the water supply valve and the liquid level of the distiller.
(3) Install a sanitary diaphragm pressure gauge on the condenser (heat exchanger), taking care to ensure a higher pressure on the distilled water side. Prevent other media from entering the distilled water system.
(4) Checking pressure, flow rate, temperature, conductivity, organic carbon, pH and other control instruments should be regularly checked during use to ensure the accuracy and timely signing. The multi-effect distilled water filter has passed the integrity test. The quality status of each unit of the water for injection system should be checked regularly.
(5) When the multi-effect distilled water pump is installed and started for the first time, pay attention to the correct steering of the pump impeller; and check if there is gas in the pump. Open the plug on the side of the water outlet of the pump and deflate it and fill it with water. Reinstall the plug. That is, the starting feed water pump must be drained to ensure the safe operation of the pump. If the pump is running abnormally, pay attention to check if the feed water is out of water or there is foreign matter in the pump.
(6) Since the industrial steam pipelines are mostly iron pipes, long-term operation of rust and other impurities can easily block the condensate valve or steam trap, and the maintenance inspection should be taken out during use.
(7) If there is leakage in the inner shell of the first-effect evaporator, the water sample will have red-yellow substance through the 0.22μm filter membrane; if the pyrogen is unqualified, the condenser cooling water pipe or the purified water pipeline may leak; Leak test welding, pressure test and water quality verification, and inspection records.
(8) If there is air leakage or water leakage at the seal, the corresponding bolts should be inspected and tightened. If the service life is longer, the gasket can be updated.
The above is the operational requirements for the double-tube multi-effect distilled water machine.
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The double-tube multi-effect distilled water machine is an ideal equipment for water production in the hospital, pharmaceutical, electronics, food and beverage industries. What are the main points to pay attention to when operating the double-tube multi-effect distilled water machine: