Screw Compressor Kaeser AS 35

## Kaeser AS 35 Screw Compressor: A Buyer's Analysis This report analyzes the Kaeser AS 35 screw compressor, specifically three units manufactured in 1985, 1989, and 1991. Buyers should approach this purchase with a thorough understanding of the age and implications for maintenance and operational costs. **Applications & Uses:** * **Primary Industrial Applications:** These compressors are suitable for general industrial compressed air needs. Applications include powering pneumatic tools, operating automated systems, and supplying air for various manufacturing processes. The age limits application to less demanding environments compared to modern, energy-efficient models. * **Products Manufactured (Indirect):** The AS 35 does not directly manufacture products. It provides compressed air used *in* manufacturing processes across various sectors. * **Industries:** Typical users include smaller manufacturing plants, workshops, garages, and facilities with moderate compressed air demands. The age makes it less suitable for critical applications or high-production environments. * **Production Capacity:** Precise capacity depends on operational pressure and duty cycle. Expect a relatively low output compared to modern compressors; precise figures require accessing original specifications (likely unavailable for units this old). You should expect significantly lower energy efficiency than modern units. **Technical Considerations:** * **Key Features & Capabilities:** These are rotary screw compressors, offering continuous air supply. Key features to verify (through original documentation if possible) include free air delivery (FAD), operating pressure, and motor power. * **Technical Specifications to Verify:** Obtain (if available) the original specifications including FAD, operating pressure range, motor power, rotational speed, and oil capacity. Check the compressor's control system functionality. * **Inspection:** A thorough inspection by a qualified technician is crucial. Inspect the compressor's air end (screw elements) for wear and scoring. Check the oil condition and system for leaks. Examine the motor, drive belts, and all safety components. Assess the condition of the air receiver tank (if included), paying attention to corrosion and pressure testing compliance. * **Wear Points:** Common wear points include the screw elements, bearings, seals, and oil filters. Older units are more susceptible to significant wear and tear. Regular oil changes and filter replacements are essential. Plan for potentially higher maintenance costs due to the age. **Logistics & Setup:** * **Transportation:** These compressors require specialized transportation due to their weight and dimensions. Secure appropriate heavy-duty lifting equipment and transportation. Assess accessibility to the delivery location. * **Disassembly/Reassembly:** Partial disassembly might be necessary for transportation; expertise is needed. Professional assistance is recommended, especially given the age of the units. * **Installation:** Level installation surface required. Connect to a suitable power supply and air receiver tank (ensure it's compliant). Proper plumbing and wiring are essential. * **Space & Utility:** Allow sufficient space for maintenance access. Requires three-phase power supply (verify voltage and amperage requirements). **Market Insights:** * **Value Retention:** The value retention for used Kaeser AS 35 compressors of this age is likely low. The age and potential maintenance needs significantly impact resale value. * **Market Demand & Resale:** Demand is likely limited, primarily driven by buyers seeking budget-friendly options. Resale might be challenging, and achieving a high sale price is unlikely. * **Comparable Alternatives:** Consider newer, energy-efficient screw compressors or even refurbished models from reputable suppliers. The long-term operational costs (energy and maintenance) of these older units could outweigh any initial cost savings. **Conclusion:** Purchasing these used Kaeser AS 35 compressors represents a significant risk due to their age and potential maintenance requirements. A thorough inspection by a qualified technician and careful cost-benefit analysis, weighing potential repair costs against the purchase price, is absolutely essential. Buyers should strongly consider newer alternatives for higher reliability, efficiency, and lower long-term operating costs.