Briefly describe the start-up and stop procedures for an exhaust fan equipped with an inverter?

Taking a circulating fluidized bed boiler as an example, the startup steps are as follows: Before starting, ensure that the work area is clean, that the coupling guards are in good condition, that the maintenance work orders have been collected, and that the electrical system has performed insulation tests on the motor with satisfactory results. It should also be confirmed beforehand that the motor’s rotation direction is correct. Contact the electrical team to supply power; first start the motor’s cooling fan, then set the motor speed to 5% on the main control computer and start the motor. After checking for any abnormalities, gradually increase the speed. During this process, start the boiler’s primary fan and raise the air volume above the critical level required for fluidization, maintaining balanced ventilation. Thereafter, the speed of the exhaust fan should be adjusted so as to maintain an appropriate negative pressure in the furnace. Finally, the fluidization fans and secondary fans should be activated gradually depending on the boiler’s load.