Matters needing attention in installing negative pressure fan When installing the negative pressure fan, the wall of the fan must be sealed. Especially, there is no space around the fan. The most ideal way to install the negative pressure fan is that the wall and the door and window of the fan are all closed. The fan opens the door and window to the wall to ensure the air flow in a straight line. Negative pressure fan installation is a very important project, is a very big influence to the negative pressure fan, after use, in the whole process of installation must always pay attention to. First, before installation 1, before the installation of negative pressure fan, should carefully check whether the negative pressure fan is intact, the fastener bolts are loose or fall off, the impeller has no impact hood. Carefully check whether the fan blade or louver is damaged during the transportation. 2, the installation should choose the outlet environment, we should pay attention to the outlet opposite 2.5 -3M can not have too much obstacle. Two, installation time 1, installation is stable: negative pressure fan installation should pay attention to the horizontal position of the fan, adjust to the negative pressure fan and the ground plane level stability. After installation, the motor can not be tilted. 2. When installing negative pressure fan, the adjusting bolt of the motor should be in the position of convenient operation. Adjust the belt tightness for convenient use. 3, installation of suction fan bracket, must let the support and foundation level stable, necessary installation angle iron reinforcement in the negative pressure fan side. 4, after the installation of negative pressure fan, it is necessary to check its surrounding seal. If there is a gap, it can be sealed with the sun board or glass glue. Three, after installation 1, after installation, check whether the negative pressure fan left the remaining tools and debris. Use hand or lever to toggle fan blade, check whether there is too tight or rub phenomenon, whether there is no obstacle to the rotation of the goods without abnormal phenomenon, you can do the trial run. 2, if there is a negative pressure fan vibration or abnormal buzz or other abnormal phenomena in the motor, the machine should be shut down to check and be used again after repair. previous：Animal husbandry fan in the textile workshop in addition to cooling, what is the role Next：How to solve the fan oil leakage or oil leakage into the casing