1. Necessary work before starting the concentrator in the Hospital use oxygen concentrator factory:

　　①Check whether each effect heater and evaporator are clean. ② Check whether each valve is in the correct opening and closing position.

　　2. Start the concentrator of the Hospital use oxygen concentrator factory: ① Open the vacuum valve. ②Open the feed valve to feed, and close the feed valve when the material liquid is seen in the sight glass. ③ Before opening the steam valve, first open the steam blowdown valve, discharge the residual condensate and dirt in the steam pipe to the sewer, and close the steam blowdown valve. ④ Slowly open the steam valve, heat up to the required pressure, and make each effect evaporator perform thermal cycle. ⑤Open the cooling valve of the condenser.

　　3. Normal operation:

　　①Hospital use oxygen concentrator factory concentrator adjusts the opening degree of each effect feed valve, and controls the material level to maintain a certain height. ②Every 2 hours or so of evaporation, open the exhaust valve of the heater once to remove the condensable gas. ③ For the discharge of condensed water, in addition to the separate discharge of the condensed water of the I-effect heater, the II and III effects are discharged once about half an hour.

　　4. Receiving operation of concentrator in Hospital use oxygen concentrator factory:

　　①Close the feed valves of II and III effects. ②Close the vacuum butterfly valve of the third effect evaporator, open the vacuum bypass valve of the first effect, and improve the vacuum degree of the first effect evaporator. ③Open the vacuum valve of the lower storage cylinder of the I-effect evaporator. ④Open the exhaust valve of Ⅱ and Ⅲ effect, destroy the vacuum degree of Ⅱ and Ⅲ effect evaporator, open the bottom discharge valve of Ⅱ and Ⅲ effect heater, and pump all the material liquid into the storage tank in the lower part of Ⅰ effect evaporator. After the cylinder, and close the Ⅱ, Ⅲ effect material valve. ⑤ The material liquid is thermally cycled separately in the first effect, and the material is discharged when it evaporates to the required depth.

　　5. The concentrator of the Hospital use oxygen concentrator factory shuts down:

　　①Hospital use oxygen concentrator factory concentrator closes the steam valve and stops supplying steam. ②Close the vacuum valve and stop the vacuum pump. ③Open the exhaust valve of the evaporator to destroy the vacuum degree of the evaporator. ④Open the exhaust valve and drain valve to remove the condensate.