296. Our daily maintenance: refrigerators are electrified。
Look at this refrigerator. I got a refrigerator. It's not cool。
Zero power, open the cooling room door and find it uncool. Open the doors of the freezer room, which has no air conditioning。
• observation signs, which normally conduct pressure tests at low pressure ends, with pressure of approximately 1. 8 mpa, which is a compressor。
• about a few hours later, there were microtangles on the back of the freezer, increasing pressure to about 2. 5 mpa。
• back-to-back treatment of the freezer, cutting the foam in the freezer room, which is the pipeline of the freezer and which has been leaked by pouring water. Observation pressure, no apparent fallout。
Welding of copper pipes, aluminium welding, testing of good welding of copper aluminium。
Fixed evaporation, pressure normal. The pressure continues to be normal to prevent ice congestion。
The compressor was removed, the compressor oil was replaced and the compressor oil was significantly yellowened, and this was the backfilled refrigerator. Observe pressure again, about 2. 6 mpa, normal。
After electronization, the hand-held compressor felt a slight vibration, which was washed by the refrigerator. Disable pressure-table valves and re-wash pipes with refrigerants to prevent ice congestion。
Refrigerators are injected with original compressors and pressure is rising. Touch high-pressure tubes, with a temperature to clean the refrigerant. Low pressure end negative, pressure rising。
• open valves to wash the pipes, which are washed two or three times. Re-cleaning and routine restoration of low-pressure pipes。
The refrigerator is emptied and injected with refrigerants. But unfortunately, this fridge is about to freeze, and it's stuck at a negative 18 degrees。
