ZR heavy hammer exhaust fan 1. Frame using advanced automatic processing, high precision. Extra-thick zinc coating frame, corrosion resistance strong. 2. High-strength aluminum alloy casting wheel, the reasonable perspective of the type, to reach the maximum air flow. High-precision micro computer aided manufacturing system can make the best of its fans. 3. It used Al-alloy rim, so it has light weight, high intension and good toughness. 4. Bearing of impeller, permanently sealed bearing, size 633313, the bearing is of high intension and durable using term without any noise. 5. High precision system is assistant by computers, which maximizes the effectiveness of the fan. Ten strict procedures that consist of airflow test, noise test, libration test, drive concentric test, blade RPM test, electric current test and whole machine efficiency test, dynamic balance test, the thickness of the galvanized sheet test, the size of the spare parts test, They assure the quality of the fan. 6. The guarantee period is one year, during which the easily damaged parts are offered free of charge. 7. Safety net with easy disassembly is convenient for maintaining. 8. Motor be specially used for high-performance fan, with updated design for automatic regulating device, the belt doesn't need manual adjustment.Model BladeSpeed(r/min) Capacity(m3/h) Power/w Voltage/v Size (mm) H W D ZRH-900 600 28000 370 380 900 900 400 ZRH-1000 600 32000 750 380 1000 1000 400 ZRH-1100 600 35000 750 380 1100 1100 400 ZRH-1220 480 40000 1100 380 1220 1220 400 ZRH-1380 440 44000 1100 380 1380 1380 400 ZRH-1530 440 55800 1500 380 1530 1530 400
