If there is something wrong with the rotary drum dryer in the drying process,it should stop working at once.The most important thing is that you are supposed to find the cause of breakdown and solve the problem timely.For example,if the dryer drum bearing makes some noise,you can add some lubricant to reduce friction;if the supporting parts are broken,you should replace the old supporting parts with new ones.If you are not reassured, we have prepared a video on installation, operation, replacement, repair and maintenance of parts.The video is animated and easy to understand.If you have any problems,you can e-mail or call us at any time.We will spare no efforts to provide you with help without delay.