Reciprocating Compressor Low Lubricating Oil Pressure: Causes & Solutions
In industrial gas systems, the lubrication system plays a critical role in ensuring stable and safe operation. Whether in reciprocating gas compressors, diaphragm compressors, or integrated nitrogen and oxygen generation systems, abnormal oil pressure can lead to severe equipment damage or unexpected shutdowns.
This guide explains the causes of both sudden and gradual drops in lubricating oil pressure, along with effective troubleshooting solutions.
1. Sudden Drop in Lubricating Oil Pressure
Symptoms
During normal operation, oil pressure should remain stable. If it suddenly drops below 0.1 MPa, it indicates a serious fault.
⚠️ Immediate shutdown is required if oil pressure drops to zero.
Causes
- Low oil level or high oil temperature (reduced viscosity)
- Clogged oil filter
- Severe oil leakage in pipelines
- Worn gear oil pump with excessive clearance
- Faulty shaft seal allowing air ingress
- Oil pressure regulating valve opened too much
- Blocked oil pump inlet pipe
Solutions
- Refill lubricating oil to proper level
- Improve cooling to reduce oil temperature
- Clean or replace oil filter
- Repair or replace gear oil pump
- Fix leakage points in oil system
- Adjust oil pressure regulating valve
2. Gradual Decrease in Oil Pressure
Symptoms
Oil pressure slowly decreases during operation and fails to meet required levels.
Causes
- Loose oil pipe connections
- Faulty oil return valve
- Excessive wear of bearings and journals
- Dirty oil filter
- Low oil viscosity (possible contamination)
Solutions
- Tighten connections or improve sealing
- Repair or replace return valve
- Replace worn bearings
- Clean oil filter regularly
- Replace contaminated lubricating oil
3. Preventive Maintenance Tips
- Regularly monitor oil pressure, temperature, and level
- Use high-quality lubricants
- Maintain proper filtration and cooling systems
- Schedule preventive maintenance for compressors and gas systems
4. Recommended Equipment
Reciprocating Gas Compressors
https://weisidunpower.com/gas-compressor/reciprocating-gas-compressor/
Diaphragm Compressors
https://weisidunpower.com/gas-compressor/diaphragm-compressor/
Nitrogen Generator Systems
https://weisidunpower.com/gas-equipment/nitrogen-generator-system/
Oxygen Generator Systems
https://weisidunpower.com/gas-equipment/oxygen-generator-system/