Built to handle intense low-temperature applications—such as industrial blast freezers, quick-freezing tunnels, and low-temp distribution hubs—the 06TTR266 refrigeration screw compressor delivers massive low-temperature capacity. Powered by a heavy-duty 120 HP motor, it provides a displacement of 446 m³/h (266 CFM) at 60Hz and 369 m³/h (221 CFM) at 50Hz.

Specifically engineered for low-evaporating operations using R404A, R507, or R22, its integrated 1-3/8 in. economizer subcooling port maximizes liquid subcooling prior to the expansion valve. This design significantly elevates cooling output and COP during high compression ratio cycles without overloading the motor driver.

To maintain consistent evaporating pressures during rapid pull-down or changing batch loads, the 06TTR266 uses a high-response dual-solenoid capacity modulation system. Offering continuous, stepless unloading from 25% to 100%, the compressor adapts fluid flow to instantaneous thermal conditions.

Internal volume ratio (Vi) tuning prevents partial-load over-compression penalties, reducing electrical consumption during holding phases and stabilizing low-temperature storage climates.

Weighing 613 kg, this semi-hermetic compressor features a heavy-duty structural casing that dampens vibration in demanding mechanical rooms. Using an internal pressure-differential lubrication scheme, it operates reliably without external oil pumps.

• Oversized Porting: Generous 4-1/8 in. suction and 3-1/8 in. discharge connections ensure low gas velocity friction and minimal manifold pressure drops.
• Integrated Discharge Check Valve: Protects the precision twin screws by stopping high-pressure backflow gas from reversing rotor rotation upon shutoff.
• Winding Thermal Protection: Embedded NTC thermistors continuously monitor motor temperatures against electrical sags and phase imbalances.

• Included Components: Electrical Junction Box, Capacity Control Solenoids, Motor Protection Module, Suction & Discharge Shutoff Valves, Internal Oil Piping Assembly.
• Optional Upgrades: Liquid Subcooling Economizer Assembly, External High-Efficiency Oil Separator, Auxiliary Oil Heat Exchanger, Counter Flange Kits, Kriwan Protection Modules.

For over two decades, Coolstart has stood as a trusted global supply partner in commercial and industrial refrigeration. We deliver high-performance screw, semi-hermetic reciprocating, scroll, and rotary compressors alongside turnkey cold storage and quick-freezing equipment.

Through robust engineering support, strict quality verification, and flexible OEM/ODM manufacturing, Coolstart serves engineering contractors and equipment wholesalers across North America, Europe, the Middle East, and Southeast Asia. We prioritize long-term B2B partnerships by pairing top-tier mechanical reliability with direct factory pricing.