L&W COMPRESSORS L&W 500 Breathing Air Compressor: Common Faults and Maintenance

L&W COMPRESSORS is an American manufacturer of high-pressure air compressors for industrial breathing air. The L&W 500 is typically used for shipboard breathing-air systems. This guide summarises its applications, typical faults and the consumables that keep it running reliably.

Common faults and diagnosis

Oil carry-over

Excess oil consumption often signals worn rings or a blocked separator element; both affect air purity and should be checked early.

Filter saturation

Clogged activated-carbon and particle filter cartridges cause pressure drop and longer fill times. Replace filter elements at the recommended interval and after any noticeable taste or odour.

Low or unstable pressure

Intermittent pressure loss often traces to an intake restriction or a sticking check valve rather than the pump itself.

Compatible consumables

We supply generic, compatible consumables for the L&W COMPRESSORS L&W 500, including breathing-air compressor lubricating oil and breathing filter cartridges (activated-carbon and particle stages). These are aftermarket replacement parts; we are not affiliated with L&W COMPRESSORS and do not represent the original manufacturer.

Dejue breathing air compressors

As an alternative source, Dejue builds its own breathing air compressors up to 50 MPa; the full parameter selection table (100–1000 L/min) is available here: https://www.bs986.com/list_29/100-1000l-breathing-air-compressor-selection-table.html.

Contact

For spare filters, oil or a new breathing air compressor, request a quotation with your operating conditions.

View the 100–1000 L/min breathing air compressor selection table