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    Screw compressor overhaul

    Screw compressor overhaul Screw compressor overhaul, normal working condition of refrigeration system in operation: 1. The suction temperature of the compressor should be 5-15 ℃ higher than the evaporation temperature; 2. The discharge temperature of the compressor should not exceed 130 ° C for the R12 system and 150 ° C for the R22 system; 3. The oil temperature of the compressor crankcase must not exceed 70 ℃; 4. The suction pressure of the compressor should correspond to the evaporation pressure; 5. The discharge pressure of the compressor should not exceed 1.2MPa for the R12 system and 1.6MPa for the R22 system; 6. The oil pressure of the compressor is 0.12-0.3MPa higher than the suction pressure; 7. Always pay attention to the amount of cooling water and water temperature. The outlet temperature of the condenser should be 2-5 ℃ higher than the inlet temperature; 8. Always pay attention to the oil level of the compressor crankcase and the oil return of the oil separator; 9. The compressor should not have any knocking sound, and the heating of all parts of the body should be normal; 10. The condensing pressure must not exceed the compressor discharge pressure range.

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    Refrigerating oil replacement and internal cleaning

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