06NW2209S7EA-A00 Screw Type Refrigeration Compressor

The 06NW2209S7EA-A00 is a 75 HP screw type refrigeration compressor built for high-performance water-cooled chillers, process fluid skids, and central commercial HVAC plants. Designed specifically for water-cooled pressure ratios with an optimized built-in volume ratio, it delivers superior thermodynamic efficiency under low condensing pressure operations. Equipped with an integrated 1-3/8 in economizer port, this unit enables liquid subcooling to boost overall cooling capacity while lowering specific power input.

Engineered to maintain long-term operational stability in quiet indoor mechanical rooms, the 06NW2209S7EA-A00 features Carlyle's patented twin-screw rotor profile to minimize gas flow pulsation and dynamic vibration. Heavy-duty SKF or NSK rolling contact bearings combined with robust axial thrust bearing assemblies absorb heavy mechanical stresses, significantly extending routine maintenance cycles. Internal safeguards include a fast-acting check valve to prevent reverse rotor rotation during power disruptions, a fine-mesh oil filter, and a discharge muffler.

To handle fluctuating thermal loads without energy waste, this screw type refrigeration compressor utilizes a dual-solenoid 3-stage unloading system (100% - 66% - 33%). This step-by-step capacity control prevents compressor short-cycling and optimizes off-peak power consumption. Driven by a high-efficiency motor with embedded NTC thermistors for winding thermal protection, it supports both Star-Delta and Direct-On-Line starting across major global voltage standards.