You must first switch off the fan and check the blades for dust. You should check the capacitor, regulator, bearings, and motor if the speed remains low after cleaning. You must immediately turn off the fan and call an electrician if you notice a burning smell, weird noise, extreme heat, or heavy vibration. You should never open the fan cover, change the capacitor, or oil the motor without cutting the main power supply. The capacitor stores electricity and gives a severe shock if you touch it carelessly. You must always follow the maker manual and use genuine spare parts for your safety.
