When the air compressor is not used for a long time: the cooling water of the air compressor system should not freeze and crack when it goes underground, but in early spring, the temperature is not stable, if it is suddenly cold, and it is not often opened, the water should also be released. The energy consumption of compressed air increases slightly with the decrease of the specific volume of air temperature in winter, but the energy consumption of cooling water decreases, which affects the difference. Suggestions for daily maintenance of air compressors are given, mainly for lubricating oil maintenance to prevent clogging and high temperature carbonization from further blocking the oil circuit.
In addition to the air compressor start-up: screw air compressor winter start-up mode is: first off the cooling fan switch, press the "Start" button, so that the screw air compressor no-load operation. The operation of the screw air compressor is observed by the display. When the temperature of the screw air compressor reaches about 75 - 80 C during unloading, the thermometer gun or the temperature of the inlet and outlet of the cooler are used to confirm the opening of the thermostatic control valve.
If the outlet temperature does not rise, the screw air compressor can continue to run to about 90 C under unloading condition, and confirm the inlet and outlet of the cooler again. When the temperature difference between the outlet and inlet is between 20 30 C, the screw air compressor can be loaded and run. Check the oil level of the screw compressor. When the oil is loaded, the oil level is kept in the middle part of the oil mirror.
When loading operation, the operator must not leave the screw air compressor starting cabinet, should carefully observe the screw air compressor display data, and according to the actual display results to accurately judge whether the screw air compressor can continue to operate. If all the data show normal, at this time should mainly observe the exhaust temperature of screw air compressor, when the temperature rises to 9O ~ 95 degrees Celsius, close the fan control switch. At this point, the operator should check the operation of the unit under the full load state through the controller, whether there is oil leakage around the unit and cooler, until the screw air compressor running for 15-25 minutes, if everything shows normal, indicating that the screw air compressor into normal operation, the operator can leave the starting cabinet.