Installation of ventilation fan: 1. When installing a newly purchased ventilation fan, it is necessary to handle the installation site well, clean the roadway, hang the various components of the ventilation fan in sequence onto the laid steel rails, connect and tighten the components, and connect the power and instrument wires according to the motor user manual. 2. The ventilation fan must be installed on the surface of the outlet of the branch air duct, with explosion-proof doors installed according to regulations, and ensure that the air exchange port of the partition chamber is connected to the atmosphere. 3. After checking that all components are installed correctly, check if the brakes are flexible and there are no debris in front of the fan air inlet. Then start the test run and check if the operating direction of the impellers at all levels is consistent with the direction marked on the fan. If there are any abnormalities, stop the vehicle for processing and confirm t…