How to install exhaust fan:
First, check whether the body of the exhaust fan is intact, whether the bolts are loose or falling, and whether the fan blades are damaged or deformed. Then measure the accurate installation position and mark it; Then locking screw, fix the exhaust fan in the hole, the ventilation fan should be placed horizontally, pay attention to not tilt when using; If necessary, reinforce the device angle iron beside the ventilation fan; After the fan is installed, pay attention to check the tightness, if there is a gap, add a little silicon sealant to seal it. After exhaust fan is installed, clean up the debris around and start running.
