General Rules And Specifications For Screw Compressors

Screw compressors are vital equipment in various industrial applications, and ensuring their optimal performance requires proper maintenance and adherence to usage guidelines. This article will discuss essential rules and specifications to help operators maximize the efficiency and longevity of screw compressors.

1. Regularly Replace Consumables

Consumables such as air intake filters, oil filters, oil filter elements, and lubricating oil play a crucial role in the performance and reliability of screw compressors. Over time, these components can become blocked or contaminated, leading to a decrease in air intake, increased internal pressure, higher operating temperatures, and greater motor load.

When the air intake filter becomes blocked, dust and debris may enter the system, contaminating the lubricating oil and reducing the lifespan of the oil filter and oil cooler. To ensure reliable compressor operation, it is essential to replace these consumables at the recommended intervals.

2. Follow the Instruction Manual

The product instruction manual provides detailed information regarding the operation, maintenance, and environmental requirements of the compressor. It outlines the maintenance cycle, replacement of consumables, and other critical procedures to ensure optimal performance.

Before operating the compressor, users and maintenance personnel should carefully review the manual to understand the specifications related to power supply, water supply, air pressure, and other operational requirements. Reading the manual allows for correct installation, usage, and troubleshooting of common issues. The manual should be treated as an essential reference and ideally included as an annex in the purchase contract.

3. Keep Detailed Maintenance and Operation Records

Maintaining accurate daily operation and maintenance records is critical for analyzing the compressor’s performance and determining the best maintenance schedule. These records should include key parameters such as exhaust pressure, head exhaust temperature, internal pressure before the oil core, motor current, and daily start-up and shutdown times.

Regular calibration of relevant instruments is necessary to ensure the accuracy of these parameters. Additionally, it is important to document the dates of consumable replacements and maintenance tasks. These records form the basis for predicting potential issues and ensuring timely interventions.

4. Rust Removal and Prevention in Oil and Gas Separation Tanks

The oil and gas separation tank in screw compressors operates under high temperature and humidity, making it susceptible to rust, particularly in models that use carbon steel. When replacing the oil separation core, rust on the upper part of the tank should be removed. Additionally, any accumulated water at the bottom of the tank should be drained daily to prevent corrosion.

For compressors that are not in use for an extended period, it is advisable to change the oil and apply an oil seal. Rust in control pipelines or oil return pipelines should also be addressed regularly to prevent performance degradation.

5. Maintain Optimal Operating Conditions

Screw compressors should operate within their design parameters to ensure maximum efficiency and prevent issues. The exhaust pressure must be set within the allowable range; if set too high, it can cause motor overload, while prolonged operation at low pressure can increase fuel consumption.

It is also important to recognize that low pressure in the pipeline network is often due to insufficient exhaust volume rather than low exhaust pressure. Addressing this issue requires ensuring that the compressor’s output matches the system’s gas consumption requirements.

Conclusion

By following these essential maintenance and operational guidelines, screw compressor users can improve performance, prevent common issues such as rust and contamination, and extend the equipment’s lifespan. Regular replacement of consumables, adherence to the instruction manual, and proper record-keeping are key to maintaining reliable and efficient compressor operations.

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