What to consider when buying a used compressor:
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Warranty and support: Devices ordered from Europe usually come without warranty or later technical support.
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Condition of the unit: It is important to see pictures of the inside of the compressor – the unit should not have oil leaks or oil-soaked surfaces; the interior should be clean and free from excessive production dust. Otherwise, this indicates poor maintenance, overheating issues, and an immediate need for servicing. If the compressor has previously run for long periods at the overheating limit, thorough servicing is usually not enough anymore, and repairs may become more expensive than the price of buying the used compressor itself.
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Completeness: Also make sure that the unit is complete.
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Operating hours: Request photos of the actual operating hours directly from the compressor’s control panel (not from the maintenance counter or other counters). There have been cases where, instead of the promised 2,000 hours, the unit actually has 60,000–100,000 operating hours.
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Testing in a video: The fact that the compressor runs briefly in a video does not confirm its technical condition. For example, a defective screw element usually becomes apparent only under continuous load (e.g., due to overheating). Problems with the frequency converter may appear after about 10 minutes of operation. A faulty control panel may sometimes fail to start up at all, etc.
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Origin of the equipment: Most used compressors are removed from production due to technical problems. On-site repairs are often not cost-effective, which is why they are sold in “as is” condition, with the seller not taking responsibility for their condition or providing any warranty.
