With tips of routine maintenance
Refurbishing a second-hand screw air compressor can be a cost-effective way to acquire a dependable and efficient machine for your compressed air requirements. However, it also requires knowledge and skills to perform the necessary repairs and maintenance. Here are some general steps and tips on how to refurbish a second-hand screw air compressor:
- Inspect the condition of the compressor and its components. Check for any signs of damage, wear, corrosion, or leaks. Look for any missing or loose parts, such as nuts, bolts, screws, valves, filters, belts, hoses, etc. If you encounter any issues, you will need to replace or repair them accordingly.
2. Clean the compressor and its components. Use a soft cloth, brush, or compressed air to remove any dust, dirt, oil, or grease from the surface of the compressor and its components. You can also use a mild detergent or solvent to clean the metal parts, but be sure to rinse them thoroughly and dry them completely afterward. Avoid using abrasive materials or cleaners that could damage the compressor or its parts.
3. Change the oil and filter. The oil and filter are essential for lubricating and cooling the screw compressor. You should change them regularly, following the manufacturer’s recommendations, or whenever they become dirty or contaminated. To change the oil and filter, you will need to drain the old oil from the oil sump, remove the old filter, install a new filter, and fill the oil sump with new oil of the appropriate grade and viscosity.
4. Check and adjust the pressure settings. The pressure settings of the screw compressor determine the amount of air it delivers and the pressure level at which it operates. You should check and adjust them according to your compressed air requirements and the specifications of the compressor. To check and adjust the pressure settings, you will need to use a pressure gauge and a screwdriver. The pressure settings are typically controlled by two screws located underneath the pressure maintaining valve: one for activating and deactivating the compressor, and another for adjusting the pressure level. You can also use an additional upper screw for fine-tuning the airflow.
5. Test the compressor and evaluate its performance. After completing the refurbishment process, it is important to test the compressor and evaluate its performance to ensure proper safe functioning. You can accomplish this by operating the compressor for a few minutes and observing its sound, temperature, vibration, power consumption, airflow, and air quality. If you notice any abnormalities or problems, you should immediately stop the compressor and troubleshoot it accordingly.
Here are some general steps and tips on how to refurbish a second-hand screw air compressor. However, you should always follow the specific instructions and guidelines provided by the manufacturer of your compressor model. You should also consult a professional technician if you are not confident or experienced in performing the refurbishment yourself.
