In the process of using the negative pressure fan, the belt often slips. When this happens, we have to check whether there are all kinds of problems in the negative pressure fan. At this time, we should focus on checking the belt part of the negative pressure fan. 

Will the belt slip of negative pressure fan affect the effect of air volume? We know that the negative pressure fan of galvanized sheet is generally driven by belt. in the process of using it for a long time, the belt of negative pressure fan of galvanized sheet will inevitably have the phenomenon of aging, which is mainly reflected in the elongation of the belt and the skidding caused by aging. This belt skidding phenomenon will be seriously marketed to the air volume of the negative pressure fan. After the air volume of the negative pressure fan decreases, it will seriously affect the ventilation effect and the belt skidding. We should attach great importance to it.Replace it as soon as possible, otherwise the belt may suddenly break, causing the fan blade to be broken by the broken belt.