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1. The brushless motor, low noise and high speed, stable operation and long life-span,low electricity consumption, high efficiency(Zero maintenance and zero consumables of motor)
2. Specially-designed alloy eddy current wind wheel is featured by fatigue-resistance, stable running, low noise, large air volume and high efficiency.
3. Stepless speed regulating through touch-button makes air quantity adjusted at will.
4. Multistage filtering design guarantees the thorough harmful matters filtering in smog.  Preliminary-effect, medium effect and main filtering elements can be changed independently. Not only does this designing form lengthen the using-span of filters, but also lowers the using cost of filters.
5. All filter replacement separately, prolong the service life of the filter core and decrease the cost of the use of filter element.
6.  being installed easily and conveniently and operated easily. work space clean and tidy and beautiful.
7. Consistent with CE certification, safe and reliable.
8. Compliance with national air quality testing certification.
9. High quality full metal plate, high intensity, good impact resistance.

• Model Parameter: MD 3109A
• Wind into interface: 90mm*1 flange
• Input Voltage: AC 220V
• Power: 450W
• Wind speed: 22m s
• Filtering effect: 0.3um 99.97
• Noise: less than 70db
• Smocking tube length: 100mm*3m
• Fan Flow: 800m 3 h
• Overall size: 550(L)*415(W)*920(H)mm
• Weight: 60 kg

1. The appearance of the machine for any damage
2. The power switch is turned off
3. The filter is placed inside the machine is stable
4. The body of the cabinet door cover is securely installed

1. Pull up two twist lock rotating to the right to open the front door to the OPEN position
2. Use the hex wrench to adjust the rotation of the nut to the left, loosen the filter element compression box. 
3. Starting from the top. Pull handle with. Layer by layer out of the filter element 
4. After replacing a layer of the filter element. Then follow the order indicated. Bottom-up layer by layer into.
5. After placed the filter element. With a hex wrench to adjust the nut clockwise. To compress the filter element 

• Prohibited clutter filtering layer position, must be in accordance with the direction of the line is placed on .
• Before closing, the adjusting nut must be tightened in order to compress the filter; otherwise forced to close the door, adjusting nut may damage the front door .
• Forbidden to touch  fan inside entrance .
• Prohibited clutter filtering layer position, must be in accordance with the direction of the line is placed on .
• Before closing, the adjusting nut must be tightened in order to compress the filter; otherwise forced to close the door, adjusting nut may damage the front door.
• Forbidden to touch  fan inside entrance .