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39问:风机开着,但是空调系统无风或送风量不足,可能有哪些原因? 答:(1)空调系统中的通风机故障,可能引起系统无风或送风量不足。如果通风机配用的电机电源线松开,或熔断器烧坏,空调系统当然就会无风。(2)如果电机的三相电源线接错,就会引起风机倒转,对离心式风机来说,风量急剧减少,造成送风不足。这时只要将三根电源线中的任意两根互换位置即可。(3)电源电压低于额定值,使风机转速降低,或皮带传动的风机,因皮带打滑,
39 Q: The fan is on, but there is no wind or lack of air supply in the air conditioning system. What are the possible reasons? A: (1) Fan failure in the air conditioning system may cause the system to have no wind or insufficient air supply. If the fan with the motor power cord loose, or fuse burned, air-conditioning system, of course, no wind. (2) If the three-phase power line of the motor is connected incorrectly, it will cause the fan to reverse, and for the centrifugal fan, the air flow will decrease drastically, resulting in insufficient air supply. At this time as long as any two of the three power cord interchangeable position can be. (3) the power supply voltage is lower than the rated value, so that the fan speed is reduced, or belt driven fan, due to belt slippage,