Quick door
When we use the fast door controller, we sometimes hear abnormal noises inside the box when the door is running. What is going on? ?In this case, we must first determine the power supply voltage of the inverter. If the 220v control box makes abnormal noise, it may be that the cooling fan is scratched with other components. Just adjust it carefully. Abnormal noise from the 380v control box is normal and can be ignored.
Under normal circumstances, fast doors are guaranteed for one year after installation. That is to say, within this period, as long as your door is not damaged by man-made, external force or natural disasters and other irresistible factors, the manufacturer will Free maintenance, and no labor fees or accessory costs are charged. Cost-effective maintenance within three years. The concept is that if there is a problem with your door within the normal warranty scope, the manufacturer will still take care of it, but this is There is a charge.
Of course, this does not limit whether the damage is man-made or natural. However, the cost of repairs within the past three years is relatively low, because the manufacturer only charges for parts that need to be replaced and labor. It can also be said that this is the cost that the manufacturer provides to the majority of users. In the later stage, there will be free maintenance for life. This means that the manufacturer will come regularly to inspect the fast rolling shutter door and debug it regularly. If there are hidden dangers, the user will be notified in time, or if there are any faults that the user has during use. At this time, the manufacturer should also provide free telephone guidance.
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