Generally Unplug the dryer to start with for basic safety. Then, gently detach the duct and brush from both of those the equipment side and the outside hood. Reconnect securely, and after that test for strong airflow at the skin vent even though running the dryer on an air-only or https://www.google.com/maps/d/edit?mid=1ggA53P2cCx3FGFhJ0FNkARBC631vXFc&usp=sharing