1. "Main screen" indicates the main technological process of this set of chemical water treatment system, through this interface, you can understand the operating and shutdown of key equipment, the liquid level of each water tank and chemical reagent tank,  the  real-time flow of main process equipment and the water quality data of raw water and water produced, etc. If the equipment is indicated in yellow or red, which shows it is operating; if it is indicated in green or colorless, which shows it is halted. When the liquid level of tank is higher or lower than the set value, the colur block indicating liquid level will flash in red and black colour. The buttons on the upper part of the screen can let the user enter any other screen. 

2. "Ultrafiltration screen ":  the main of ultrafiltration screen indicates the opening and closing status of ultrafiltration valve and real-time flow rate of process equipment and so on. If the automatic control process valve in the screen is indicated by red clour block, which shows that it is in operating status. If it is closed, it is normally shown in grey colour. At the lower part of the screen, there are alarm condition of alarming points of 4 sets of ultrafiltration and one general alarming output. When alarm occurs, the flashing red and black color pieces will occur at left in the description row. At the bottom left of the screen, the button with one key is the locking button. When it displays “The key to solution “of black text on a gray background, the other keys in this screen are locked and cannot be pressed. When this key is pressed, it displays purple and letter of "Locked", the other keys in this screen are locked and cannot be pressed. 

3. "Level- 1 reverse osmosis": The main screen of level- 1 reverse osmosis displays the operating and shutdown of key equipment, the real-time flow of main process equipment and the water quality data of raw water and water produced, etc. . If the automatic control process valve in the screen is indicated by red clour block, which shows that it is in operating status. If it is closed, it is normally shown in grey colour. Level-1 RO device indicated in green clour shows that it is halted, it is indicated in red clour, it shows that is operating. The high-pressure pump, booster pump, flushing pump and metering pump of scale inhibitor in operating will turn to red colour. The buttons on the upper part of the screen can let the user enter any other screen. At the bottom left of the screen, the button with one key is the locking button. When it displays “The key to solution “of black text on a gray background, the other keys in this screen are locked and cannot be pressed. When this key is pressed, it displays purple and letter of "Locked", the other keys in this screen are locked and cannot be pressed in order to prevent the unintentional operation. "Stage-one" RO (*) Operating button:  when the relevant parameters have been selected, the button of local control box button is in "Automatic" , it is possible to press this button to start automatically operating of  "Stage-one" RO, the corresponding two ultrafiltration filters will  automatically operate too. "Stage-one Ro (*) shutdown" button, when the system is in normal operation condition, it is possible to press this button to stop the automatically operating of "First-class" RO, the corresponding ultrafiltration filter will be automatically shut down too. "To Cancel Alarm " button: After the cause of alarming of this "Stage-one"RO device, it is possible to press this button to reset the alarm. At the bottom right of the screen, the alarm indication and "manual" or "automatic" working mode indication of Stage-one RO device is displayed. 

4. " Instrument Data " : on instrument data frame, the real data of each monitoring point of the whole system is listed in the form of table. The buttons on the upper part of the screen can let the user enter any other screen. "To Print Screen" button: press this button, the current screen pictures can be printed. 

5. "Alarm picture": The buttons on the upper part of the screen can let the user enter any other screen. On alarm picture, the alarming condition of each alarm monitoring point of the whole system is listed in the form of table. When alarm occurs, the flashing red and black color pieces will occur at left in the description row. When the button under the title bar of "Buzzer Alarm Output" indicates "Audible alarm", in case the alarm is given, the buzzer is output, the system can be determined to stop, it is required to make corresponding preparation. Firstly open the exhaust valve of Multi-medium filter to prevent pressure preparation. 

6. "Parameter setting": the parameter Settings can be divided into two parts: 

(1)Parameters setting for ultrafiltration images and reverse osmosis:  

①Time setting for flushing procedures of Ultrafiltration filter A, B, C, D; 

②)Setting for scrubbing times time of the washing and gas washing when the ultrafiltration filter is started. 

③ Setting for time of each flushing time of stage-one reverse osmosis. At the bottom of the screen, the button with one key is the locking button. When it displays “ to Unlock the key" of black text on a gray background, the parameters in this screen can be set. When this key is pressed, it displays purple and letter of "Locked", the time in this screen are locked, so as to prevent the unintentional operation. Method of Modifying Time Value: Use the mouse to click on the lock button first, make the screen to unlock; Then use the mouse to click the time value to be modified (at this moment, the time value will become white text on a red background). Input the value to be set on the keyboard. Press enter to confirm; Repeat the above steps to modify the other parameters; then click the lock button to lock the screen. 

(2) Selection of pump: At the bottom of the screen, the button with one key is the locking button. When it displays “ to Unlock the key" of black text on a gray background, the selection on this screen can be modified. When this key is pressed, it is displayed in purple letter of "Locked", the function of selecting and setting in this screen is locked . so as to prevent the unintentional operation. Modified methods of the equipment selection: Use the mouse to click on the lock button first, make the screen to unlock; Then use the mouse to click the selection button for modification, the display of button will be switched between "0" and "1" please wait for a few seconds after (clicking); If "1" is displayed,  indicating that the equipment has been selected by the corresponding column. If "0" is displayed, indicating that the equipment has not been selected. Repeat the above steps to modify the other selection; Then click the lock button to lock the screen.