In the process of production, if fan failure occurs, different emergency measures should be taken according to the different working nature of the fan. As follows
(1) Circulating fan. When the circulating fan fails and can not work, the burner and the circulating duct valve in this area should be swiftly closed. At the same time, when the medium temperature is higher than 250 C, the impeller of the fan needs to
be rotated manually by turning the fan wheel in order to avoid the damage of the fan. In addition, because this area can not work, curing furnace should adopt slow-down operation or adjust the setting temperature of each area to ensure the
curing quality of the coating.
(2) Fresh air blower. When the fresh air blower fails and cannot work, the concentration of combustible gas in the curing furnace will increase. At this time, the coating head of the coating machine should be swiftly opened to stop coating. After the
fresh air blower is restored to work, the coating operation can be carried out. At the same time, in order to protect the fresh air heat exchanger, the burner of the incinerator should be swiftly shut down or the set temperature of the incinerator
should be lowered.
(3) Exhaust fan. When the exhaust fan fails to work, the pressure of the solidification furnace will change to positive pressure, and the furnace gas will spill over to the workshop to pollute the operating environment. At this time, the supplementary
fan, the burner and the exhaust valve of the incinerator should be swiftly closed to avoid the burning of the exhaust gas preheater and the supplementary fresh air preheater by the high temperature flue gas of the incinerator.
(4) smoke exhaust fan. When the exhaust fan fails to work, the pressure of the incinerator will change to positive pressure, and the pressure of the solidification furnace will also be affected and increased. If the failure can be handled in a short time,
the temperature of the solidification furnace and the speed of the unit should be lowered, and the speed of the unit should be lowered while the pressure of the solidification furnace is negative. The furnace continues to operate to ensure
the incineration of waste gases. If it can't be handled in a short time, it's better to stop production and resume production after the accident has been handled.