General data:1.Matieral: Impeller: PA66,UL94V-0; Rotor: Coated in black; Bearing Type:NMB; Insulation: Class B2.Type of protection:IP44/IP55/IP68 customized3. Life Expectance:60,000 hours continuous operating at 40ºC4. Rotation:Clockwise, seen on rotor5. Lead Wire:UL2464, AWG20#, L=500mm6. Fans Feature:AutoRestart,Tach Output,0~10VDC/PWM Speed Control7. Motor Type:Three-Phase Machine,Sinewave Circuit8. Protection Function:Loss Phase,Locked Motor,Soft-start Function, Over current,Over voltage and Polarity
FB225090 backward curved Centrifugal fan recommended for air purifier is from
fans&blowers manufacturer Shenzhen FanBlower Electric Co., Ltd.
radiator equipment, air purifier, new air system, building’s ventilation system, dryer,the heater-fan for boilers, humidifier,street sweeper, electric sweeping machine,LCD AD player, fan filter unit,rail transit train, radiating system of car, brake pump of car and so on.
1. Professional design team
2. Qualified worker
3. Offers OEM service, design service and buyer Label
4. High quality with competitive price
5. Delivery on time
6. Perfect after-sale service
We promise a competitive price with good quality brushless fans. We always keep timely response for any requests from our customers. And do our best to delight our customers.
Some causes of resonance in the fixing parts of centrifugal fan:
Firstly, the cement foundation is too light or poor grouting or plane size is too small, cause fan foundation and foundation out of line, the anchor bolt loose, the frame connection is not strong, make its foundation stiffness is not enough; Secondly, fan base or volute stiffness is too low; Then, the inlet and outlet pipes which are connected with the fan are not supported and soft connected; Finaly, the neighboring facilities are too close to the fan foundation, or they have just gone through the small.
1. Reinforce the foundation or re grouting the fastening nut;
2. strengthen its stiffness;
3. plus support and soft connection;
4. increase stiffness.