Search By Manufacturer

Search By Province

Building Filters

6

Used danfoss in Netherlands

Overview

Centrifugal refrigeration compressors are high-capacity, continuous-duty machines used in large chillers and industrial cooling systems. They move refrigerant by converting kinetic energy from a spinning impeller into pressure, offering high flow at low-to-medium pressure ratios. Buyers focus on performance maps, refrigerant compatibility, driver type (electric motor or turbine), surge margin, and the condition of rotors, bearings and control systems when evaluating used units.

FAQ

What should I inspect when buying a used centrifugal refrigeration compressor?

Request performance curves, hours, maintenance records, rotor and bearing condition, oil analysis, seal history, vibration reports, and any test-run data. Verify refrigerant type and any modifications.

How do I ensure the compressor matches my chiller system?

Match mass flow, suction/discharge pressures and power from the compressor map to your design conditions. Allow surge/stall margin and check driver and gearbox compatibility.

What are shipping and handling precautions?

Secure rotor with locking devices, preserve oil and seals, blank suction/discharge ports, use certified lifting points, and ship with vibration cushioning. Use carriers experienced with heavy rotating equipment.

What should I expect during installation and commissioning?

Ensure correct foundation and alignment, vibration isolation, proper piping stress support, oil system priming, system flushing, control tuning, and run-up tests with monitoring for vibration, temperature and oil pressure.

What is a typical maintenance schedule?

Regular tasks include oil and filter changes, oil analysis, bearing inspections, seal checks, rotor balancing, performance testing and monitoring vibration and temperature trends. Follow OEM intervals and condition-based checks.

Are spare parts and refrigerant compatibility concerns?

Verify availability of impellers, seals, bearings, oil pumps and controls. Confirm the compressor materials and coatings are compatible with your refrigerant or any retrofit refrigerants before purchase.