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1. Check that the inlet and outlet connections are properly made. (First use) 2. Open the inlet and outlet valves; the pressure in both cylinders should be at the operating pressure (0.4~0.8 MPa). 3. Check that the power supply is functioning properly, the voltage meets the requirements, and the power indicator light on the control board is lit. 4. Adjust the pressure of the operating air pressure regulator so that the gauge reads 0.2 Mpa. (First use) Normal use only involves checking and adjusting. 5. Set the parameters according to the parameter-setting method (for first use); during normal use, only check the settings. 6. Set the controller in the operating position to put it in a ready state for operation; press the start button, and the device will begin to work properly. 7. Check whether the timing, status indicators on the panel, and the operation of the diaphragm cut-off valve are correct. 8. After using the twin-tower desiccant dryer for one week, please replenish the adsorbent (molecular sieve or activated alumina). 9. When there is excessive dust in the finished gas, partially replace the adsorbent. 10. Note: It is strictly prohibited to use it when the intake air contains excessive oil, to prevent the adsorbent from being \"poisoned\" and becoming ineffective or damaged. When the dryer fails but gas usage must continue, the bypass valve can be opened, the inlet and outlet valves of the dryer closed, and the pressure inside the cylinder released completely through a silencer before carrying out emergency repairs.