Powerex Scroll SPL3665329 Air Compressor

What capacity and discharge pressure does it actually deliver?

This unit delivers 40 SCFM at 100 PSIG discharge pressure and includes a 200 gallon receiver tank. Scroll compressors typically maintain stable output across their pressure range without the pulsation common in reciprocating designs, though capacity will drop slightly as ambient temperature rises or if inlet filtration becomes restricted.

What drive, power and cooling does it require?

The compressor is driven by a 5 HP motor operating at 60 Hz. The listing does not specify voltage, phase, or cooling configuration, so confirm the electrical requirements and whether this is air-cooled or water-cooled with the seller before making arrangements.

What are the running hours and what has been rebuilt?

Six units are available with operating hours ranging from 9,977 to 13,901 hours (Unit 1: 9,977; Unit 2: 11,082; Unit 3: 13,413; Unit 4: 13,901; Unit 5: 13,094; Unit 6: 11,269). The listing does not indicate whether any rebuilds, scroll replacements, or bearing services have been performed.

What should I inspect on a used compressor before buying?

On scroll compressors, verify the scroll set condition by checking discharge temperature and listening for abnormal noise or vibration indicating wear or tip contact. Inspect motor windings for insulation breakdown, check the receiver tank for corrosion and verify current ASME certification, examine all pressure switches and safety valves for function, and confirm the condensate drain system operates properly. Request maintenance records to confirm oil changes and any scroll or bearing replacements, particularly on units approaching or exceeding typical 15,000-20,000 hour scroll life.