Closed fan (rotary valve) installation precautions
1. The upper and lower flanges of the closing fan must be firmly connected, and the whole machine is in a horizontal state.
2. The fan must be kept clean, especially if there is no foreign matter in the casing.
3. Check all fasteners to ensure reliable connection and good grounding of the machine (including the motor).
4. Check the wiring of the motor to make it have the starting conditions.