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手感检查 手感检查主要是通过触摸部件来判断故障。触摸高压回路(顺序为压缩机出口→冷凝器→贮液罐→膨胀阀进口处)应呈较热状态,若某一部位或进、出口之间有明显温差,则说明此处堵塞;触摸低压回路(顺序为膨胀阀出口→蒸发器→压缩机进口)应较冷,若压缩机高、低压侧无明显温差,则说明系统有泄漏或无制冷剂。手摸高压侧的管路时,要试探性地接触,以免手被烫伤。
Handle check Handle check is mainly by touching the parts to determine the fault. Touch the high-pressure circuit (in order of the compressor outlet → condenser → liquid tank → inlet of expansion valve) should be hot, if there is a significant temperature difference between a certain part or inlet and outlet, then it is blocked; touch low pressure Circuit (in order of expansion valve outlet → evaporator → compressor inlet) should be colder, if the compressor is high, there is no obvious temperature difference on the low pressure side, then there is leakage or no refrigerant in the system. When touching the piping on the high pressure side, try it tentatively to avoid scalding your hands.