To maintain a screw compressor, perform regular tasks such as checking and changing air filters, verifying oil levels and changing lubricants, draining moisture from condensate traps, and inspecting for air and oil leaks. Beyond these daily and weekly checks, scheduled services include changing the oil separator, cleaning the cooler, and potentially replacing oil and air filters based on operating hours. Following the manufacturer’s recommended maintenance schedule, using only OEM-specified parts, and ensuring proper installation and operation in a suitable environment are crucial for longevity and efficiency.
Routine Maintenance (Daily & Weekly)
Check and Top-Up Oil:
Verify the oil level before starting the compressor and add more if it’s low.
Drain Condensate:
Empty the moisture trap (condensate trap) to prevent water buildup, which can cause corrosion and other issues.
Inspect for Leaks:
Look for any signs of oil or air leaks in the compressor body and its installation.
Clean External Surfaces:
Regularly clean the compressor’s body and heat exchanger fins to ensure good airflow and prevent overheating.
Periodic Servicing (Based on Operating Hours or Time)
Replace Filters:
Change the air filter, oil filter, and oil separator element based on the compressor’s run hours (e.g., every 2,000-4,000 hours).
Change Oil:
Replace the lubricant according to the manufacturer’s schedule, typically between 2,000 and 8,000 hours, to maintain performance.
Clean Cooler:
The cooling system should be cleaned to ensure efficient heat transfer.
Grease Bearings:
Add grease to the motor’s bearings at scheduled intervals, such as every 1,500 hours or three months.
Long-Term Maintenance
Read the Manual:
Always consult the compressor’s operation and maintenance manual for specific procedures and intervals.
Use Genuine Parts:
Employ only original equipment manufacturer (OEM) parts, such as oils, lubricants, and filters, to ensure proper function and warranty compliance.
Monitor the Environment:
Place the compressor in a clean, well-ventilated area with a stable temperature to reduce dust contamination and overheating.
Inspect Seals and Couplings:
Regularly check oil seals, couplings, and other components for wear and tear and replace them as needed.
Key Considerations
Safety First:
Always follow safety procedures, such as ensuring the compressor is not operational and has been depressurized, before performing any maintenance.
Listen for Unusual Sounds:
Pay attention to any strange noises or vibrations, which can indicate bearing wear or other internal problems.
Understand Run Hours:
Maintenance intervals are often based on running hours, so keep track of the compressor’s total operating time.