Oil/water separator service & compliance
Service the condensate oil/water separator and keep discharge within local limits for lubricated compressor rooms.
This guide is general field reference for trained, qualified service technicians. It is not a substitute for the original equipment manufacturer's service manual, applicable codes (NEC, OSHA, ASME, local), or the judgment of a licensed professional. Procedures, torque values, pressures, refrigerants, and safety requirements vary by make, model, jurisdiction, and revision. Always verify against current OEM documentation and follow your employer's safety program. Working on compressed-air, electrical, pressure-vessel, and refrigerant systems can cause serious injury or death. By using this guide you accept all risk; AirCompDX and its authors disclaim all warranties and are not liable for any damage, injury, loss, or code violation arising from its use.
Treat all condensate as oily waste. Wear gloves and eye protection, and never discharge untreated condensate to a storm drain — that is a reportable violation in most jurisdictions.
- Sample bottles and an oil-in-water test kit or lab service
- Bucket, funnel, absorbent pads
- Basic hand tools
- Replacement filter cartridges / oleophilic media
- Activated carbon polishing stage
- Inlet depressurization chamber gaskets
- 1Check the sight/test port
Most units include a clear test valve. Draw a sample: clear water passes, cloudy or sheened water means the media is loaded.
- 2Replace the media on condition
Change cartridges when the test sample fails or at the manufacturer's interval — typically annually, sooner in high-humidity or heavily loaded rooms.
- 3Drain and dispose properly
Collected oil is regulated waste. Store in a labeled container and dispose through a licensed waste hauler; keep the manifests.
- 4Verify sizing
Separators are rated in CFM of connected compressor capacity, and PAG/diester fluids need a specifically rated unit — standard units will not separate them and the discharge will fail.
- 5Document the test
Record sample results, media change dates, and disposal manifests. If an inspector asks, the paperwork is the compliance.