Used Rotary compressors for sale (27)

When examining used rotary compressors, key factors to consider include the general condition, hours of operation, maintenance history, and performance during a test run. Ensure there are no significant leaks, strange noises, or vibrations when the compressor is operating. Checking the control system for proper functionality is also crucial as it governs the operation efficiently.

Review Maintenance Records

Thoroughly review the logs of maintenance records to assess regular maintenance and any major repairs or replacements that have occurred. Frequent oil changes, filter replacements, and checks of wearing components like shaft seals, bearings, and the airend are positive signs of a well-maintained unit.

Inspect Physical Condition

Pay close attention to the physical state of the compressor. Look for signs of rust, corrosion, or any alterations that might have been made to the unit. External condition can often reflect the internal care and maintenance the machine has received.

Perform a Pressure Test

Ask to perform a pressure test to monitor the compressor’s ability to reach and maintain the desired pressure level. This can reveal potential issues with the airend or the motor that may not be evident during idle or low-load operation.

Mind the Operating Hours

Consider the total operating hours logged by the compressor, which can be a critical factor in evaluating its remaining life expectancy. Generally, a rotary compressor with lower hours in a well-maintained condition might offer a longer service life compared to one with high hours.

Ask About Replacement Parts and Service Availability

Ensure the availability of replacement parts and adequate service support. Some older or less common models may have limited parts availability, making maintenance more challenging and potentially more costly.