Air Compressor · Air Compressors
Tamrotor Marine Compressors (TMC) TMC 290-10 EWNA — Marine Large Capacity Service Air.
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Source: tmc.com · not checked against a manufacturer datasheet
| Compressor oil change | typically every 2,000-4,000 hours or per oil analysis - confirm against TMC's schedule and oil specification |
|---|---|
| Air/oil separator element change | typically every 2,000-4,000 hours or on differential pressure indication |
| Intake air filter change | typically every 500-1,000 hours, more frequently in dusty or salty environments |
| Safety/relief valve function test | typically annually or per class requirement |
| Cooling water side cleaning | typically annually or on a rising discharge-temperature trend |
| Automatic drain/trap inspection | typically every 3-6 months |
| Oil carryover in discharge air | flag the separator element for renewal once carryover exceeds roughly 3-5 ppm, or on differential pressure rather than a fixed running-hour figure - confirm against TMC's guidance |
|---|---|
| Discharge air temperature | flag for investigation once running temperature is more than roughly 10-15 degC above the commissioning baseline at comparable ambient and load conditions |
| Shaft seal leakage | any visible continuous oil weep at the shaft seal is not normal and should prompt seal renewal at the next opportunity rather than being run to a specific limit |
Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
For starting and service air compressors, class will check safety/relief valve test records, verify capacity against the vessel's starting air requirement, and check the pressure vessel (air receiver) survey status where it is part of the same system.
Estimated lifetime: Marine screw air compressors of this type are typically cited with a major overhaul (rotor/bearing work) at somewhere in the 20,000-30,000 hour range, with the package commonly remaining in service for 15-20+ years given proper maintenance - confirm against TMC's own service data.
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