1. First of all, the gray line that distinguishes the fan root of the dining cylinder is the separate wiring of the thermal protection and protection, and UVW is the three-phase power supply line of the wind type regret machine.

2. Secondly, connect the three wires of UVW to the lower end of 381 contactor respectively. If the rotation direction is wrong, adjust any two of them in the next order.

3. Finally, introduce two gray wires into the motor control loop of the dining cylinder fan.