★ suitable for medium temperature water is more than 280℃, dust content is not more than 100mg/m3 fire exhaust shaft flow fan at rated speed and flow rate, the total pressure efficiency of the fan should not be less than 70%, the total pressure deviation of the fan is not more than ±5% of the rated value
★ the sound pressure level of the ventilator under rated working conditions is no more than 38dB (A).
★ The impeller balance accuracy of the ventilator is no more than level 5.6
★ The vibration accuracy (root mean square velocity) of the ventilator shall not be greater than 6.3mm/s
★ The fan shall operate normally and safely at a temperature of 280℃ for no less than 30min
★ The motor shall adopt high temperature resistant electromagnetic wire and related high temperature resistant materials, up to grade F insulation
★ Patented induction motor heat dissipation system, improve efficiency, reduce noise, in line with GB/ t13274-91 and ga211-1999 requirements