Refrigerator refrigerant add how much?

repair refrigerators, freezers, can correctly filling amount of refrigerant, can decide the performance of refrigeration refrigeration effect is good or bad. Therefore, when filling refrigerant, must make every effort to accurately. I draw the following filling method through practice, introduced to your reference. 1. Quantitative filling of the filling method, under the not replace any component parts of the refrigeration system. Quantitative filling ( With calibration of measuring cup) According to various refrigerators nameplate is the refrigerant filling the quantity. Its advantages: filling speed, and the right. Drawback is to reduce the commissioning time ( Commissioning - As to 24 h) 。 If after the sealing of the faults in the operation process, then must cut process pipe again, after vacuum treatment to filling. 2. Nong current filling in no nameplate or don't know the correct refrigeration dose for filling. Through the repair valve filling with elbow, clip-on tables are available, and measuring the working current is within the scope of the rated current, average 125 - 160 l refrigerator load current is zero. 6 a, 170 - 185 l refrigerator load current in 1. 2 a. In addition, the volume of the larger refrigerators, freezers, depending on the power of the compressor. At the same time of measuring current, also want to observe the surface temperature of the compressor suction tube. Under normal circumstances, the suction should be frosted, condensation, the surface temperature is slightly lower than the normal temperature, dry and a little cool feeling. Commissioning for thermostat automatic action, then can the seal. Note after fluid runs, high side leak detection, when stop the leak detection on the low voltage side. 3. Pressure filling in the maintenance of refrigeration equipment, pay attention to the pressure and temperature, the general to the refrigerator freezers when charging, the first response to the refrigeration system vacuum processing, under the condition of the refrigeration system without leakage. When the vacuum cooling system. Should add refrigerant gases ( Should not add liquid) 。 Turn off the pressure gauge valve switch, boot watch list pressure situation, compressor suction pressure is at zero. 02 - 0. 04 between mpa. Less than is put, make up, after 24 h of commissioning yun wang, the suction pressure was observed on the one hand, on the other hand observation of low pressure suction tube, the low pressure suction tube frost, dew, flat to dry slightly below normal temperature, feel a little cool, pour proper for refrigeration systems. After a period of time after commissioning ( General 2 - 3 hours) Electrical system, automatic temperature controller action, say two parts are normal and refrigeration system. Can be in the boot of the sealing, maintenance of success. 4. Comprehensive filling composite filling is used at the same time current filling method and pressure filling method. In order to compare the amount of refrigerant filling correctly. At the same time, can according to the inspiratory pressure situation again, know their own repair electrical this box and air-conditioner refrigeration rate is up to standard. Because of the suction pressure is directly related to evaporation temperature. The above several kinds of liquid injection method, USES the synthesis is ideal.