Ventilation Fan selection points:
1. When you need to install the Ventilation Fan where the ceiling is installed, and the upper part of the ceiling is directly discharged to the outdoor outlet, you can use the ceiling of the Ventilation Fan.
2. When the installation of Ventilation Fans where the ceiling is installed, and the top of the ceiling reserved for outdoor pipelines, should use the pipeline Ventilation Fans, the use of its high wind pressure out of the exhaust.
3. When you need to be installed through the pipe on the ceiling to exhaust, or large buildings used to accelerate the flow of other channels, the choice of duct Ventilation Fans.
4. When directly installed in the wall of the hole, the river dirty air discharged to the outdoor suction of fresh air, you should use the blinds Ventilation Fans.
5. When you need to install in the bedroom, shopping malls, hotels, offices and entertainment venues on the glass doors and windows, should use window-type Ventilation Fans.
Ventilation Fan often prone to problems
The motor quality is poor, the motor inside the thermal circuit breaker, there is no installation of external thermal circuit breakers, etc., making the motor lack of overheating protection, the use of standstill test and capacitor short-circuit test will continue to produce high temperature, Blown.
Protection against electric shock, shell design defects, the motor shell and other basic insulation components did not take effective measures to be isolated, prone to electric shock.
Power connection and external cord does not meet the requirements of the power cord fixing device, when the power cord by the external mechanical tension, it is easy to cause the wire from the terminal and touch the metal parts, resulting in electric shock hazard.
Production enterprises use power cord wire cross-sectional area of only 0.28 square millimeters, and the standard requirements should not be small 0.5 square millimeters, so prone to power line overload the risk of fire burning.