Before Starting VFD take the following precautions When using the AC Motor Drive to operate a standard 3-phase induction motor, take the following precautions: The energy loss is greater than for an inverter duty motor. Avoid running motor at low speed for a long time. Under this condition, the motor temperature may rise above the motor rating due to limited airflow produced by themotor’s fan. Consider external forced motor cooling. When the standard motor operates at low speed for long time, the output load must be decreased. The load tolerance of a standard motor is as follows: Pole-changing (Dahlander) motor: The rated current is differs from that of a standard motor. Please check before operation and select the capacity of the AC motor drive carefully. When changing the pole number the motor needs to be stopped first. If over current occurs during operation or regenerative voltage is too high, please let the motor free run to stop (coast). Submersible motor: The rate...