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Operation condition and stopping technique of large centrifugal Fan

Wuxi JN Fan Co.,Ltd | Updated: Mar 16, 2018
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Ordinary small and medium-sized centrifugal fans often do not meet the requirements, so some factories will need to use large centrifugal fans. Large centrifugal fans are not the same as other small centrifugal fans when they are started. So how do we run large centrifugal fans?

Large centrifugal fans need to be trial-operated and qualified before they begin to operate formally. At the same time, the heat insulation layer should be attached to the surface of the fan's casing, and the insulation material should be used in order to reduce the heat transmission of the casing and protect the safety of the bearing. In addition, the thickness of the insulation should be well controlled. It can also be easily overhauled and disassembled.

Secondly, attention should be paid to the oil supply, vibration and temperature of large centrifugal fan bearing, which should be checked regularly so that the fan can run normally. Especially when the fan is just beginning to work, the vibration of bearing part is very small, but with the increase of service time, the vibration will increase gradually.

Once the maximum limit of centrifugal fan is reached, it is necessary to stop and repair it. Otherwise, if it continues to be used again, problems will arise and danger will occur, which will cause damage to the fan. This is about the operation of large centrifugal fans. What about the parking operation?

If it is normal to stop, it is necessary to cut off the heat source of the large centrifugal fan. Then the fan speed is reduced to the lowest speed, let it slow rotation, until the shell temperature drops to normal temperature, then stop the main motor. If an unexpected stop has to be made because of a sudden situation, the unit is stopped in a hot state, manual trolley should be carried out until the casing temperature drops below normal temperature.http://www.jnblower.com/


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