Regardless of how the induction motor is connected to a network, disconnect power from the device in which it is installed. In the presence of high-voltage capacitors discharge them before touching any part of the product.
Make sure that the direction of rotation does not entail the failure or accelerated wear of the device which includes the motor.
In any case don't change the connection method of the engine (the triangle on the star or Vice versa), since the voltage supply does not change, moreover, the direction of rotation is not dependent on them.
If the engine is powered directly by three-phase, swap any two of the three coming toward him phase wires.
If a three-phase motor is powered by a single-phase network through a condenser, first make sure that the load on the shaft is small, and that when the direction of rotation it will not increase. Remember that increasing pressure in this way of eating can cause the engine to stop and then fire. Then the output capacitor, which is connected with the engine, and with one of the supply wires, unplug and switch to another power lead. If there is a second, filter capacitor, with him do the same (keeping them connected in series with the start button).
In the case that the engine is fed via a three phase inverter, no switching is not performed. Learn from the instruction to the device, how to carry out the reverse (permutation, jumper, click, change settings through the menu or a special key combination, etc.), and then carry out the procedures.
Start the engine and verify that the direction of rotation has changed, and the device in which it is included, works normally.