How to deal with the faulty host refrigerant system of the compressor

How to deal with the faulty host refrigerant system of the compressor How to deal with a main engine refrigerant system where the compressor has burnt out or failed is a more serious and technically demanding problem than the production of a new main engine. However, it is often neglected by most of the technicians, and even the wrong concept is replaced if they think that it is broken anyway! It causes some disputes that the compressor quality is poor or others use it improperly. 　　 First, the compressor is damaged, of course, it needs to be replaced, and it is very urgent, but before taking action to prepare materials and tools, you must do the following: 　　If the quality of the contactor, overload device, computer, or temperature control in the control box has gone wrong, it must be checked one by one to confirm that there is no problem. 　　Whether the various setting values ​​have changed, analyze whether the compressor is burnt due to the setting value change or wrong adjustment. 　　Check the abnormal conditions on the refrigerant pipeline and correct them. 　　Determine that the compressor is burned or stuck, or half burned: 　　 1. Measure the insulation with a shaking meter, and measure the coil resistance with a three-purpose meter. 　　 2. Talk to the customer related personnel to understand the overview of the causes and consequences, as a reference for judgment. 　　 Try to drain the refrigerant from the liquid pipe part, observe the residue discharged from the refrigerant, smell its taste, and watch its color. (After burning, it is smelly and sour, sometimes pungent and spicy) 　　 After removing the compressor, you must pour out a little freezing oil and observe the color to judge the situation. Before leaving the host, wrap the high and low pressure two pipes with tape or close the valve.