Compressor Maintenance

Routine Compressor Maintenance

Establishing a regular, well-organized maintenance program and strictly following it is critical to maintaining the performance of a compressed air system. One person should be given the responsibility of ensuring that all maintenance is performed properly, on schedule, and is adequately documented. The following are typical recommended minimum maintenance procedures for air-cooled reciprocating compressors; water-cooled, double-acting reciprocating compressors; lubricant-injected rotary compressors; lubricant-free rotary compressors; and centrifugal compressors.

Routine Maintenance for Air-Cooled Reciprocating Compressors

Every 8 Hours (or Daily) • Maintain lubricant level between high- and low-level marks on bayonet gauge. (Discoloration or a higher lubricant level reading may indicate the presence of condensed liquids). If lubricant is contaminated, drain and replace. • Drain receiver tank, drop legs and traps in the distribution system. • Give compressor an overall visual inspection and be sure safety guards are in place. • Check for any unusual noise or vibration. • Check lubricant pressure on pressure lubricated units. Maintain 18 to 20 psig when compressor is at operating pressure and temperature. High-pressure rated compressors should maintain 22 to 25 psig of lubricant pressure. • Check for lubricant leaks. Every 40 Hours (or Weekly) • Be certain pressure relief valves are working. • Clean the cooling surfaces of the intercooler and compressor. • Check the compressor for air leaks. • Check the compressed air distribution system for leaks. • Inspect lubricant for contamination and change if necessary. • Clean or replace the air intake filter. Check more often under humid or dusty conditions. Every 160 Hours (or Monthly) • Check belt tension. Every 500 Hours (or 3 Months) • Change lubricant (more frequently in harsher environments). • Check lubricant filter on pressure lubricated units (more frequently in harsher...