Built to handle extreme low-temperature loads in large distribution cold stores, quick-freezing processing plants, and industrial blast freezers, the 06TTR301 semi hermetic screw compressor combines high volumetric output with rugged operational reliability. Powered by a 150 HP heavy-duty motor, this model delivers a displacement of 504 m³/h (301 CFM) at 60Hz and 418 m³/h (250 CFM) at 50Hz.

Calibrated for R404A, R507, and R22 low-temp refrigerants, its integrated 1-3/8 in. economizer circuit injects vapor directly into the compression pocket to maintain high refrigeration capacity and system efficiency under severe pressure ratios.

To adapt to rapid fluctuations in thermal demand during initial product pull-down or shifting storage room loading, the compressor uses a dual-solenoid stepless unloading mechanism ranging from 25% to 100%. By continually adjusting gas displacement to match immediate cooling needs, the 06TTR301 eliminates frequent motor restarts, maintains stable evaporating pressures, and lowers electrical utility costs over long running cycles.

Weighing 630 kg, the heavy-walled housing dampens vibration in demanding mechanical room environments. The compressor relies on an internal pressure-differential lubrication scheme, completely doing away with external mechanical oil pumps.

• High-Flow Line Connections: Oversized 4-1/8 in. suction and 3-1/8 in. discharge interfaces prevent gas throttling and lower line friction losses.
• Integrated Reverse-Rotation Check Valve: Stops high-pressure discharge gas from reversing rotor rotation upon system shutdown.
• Direct Motor Thermal Monitoring: Embedded NTC thermistor sensors continually track winding temperatures to protect against phase imbalance and overheating.

• Standard Package: Terminal Connection Box, Solenoid Capacity Control Valve Group, Motor Protection Module, Suction & Discharge Shutoff Valves, Internal Lubrication Piping Assembly.
• Optional Equipment: Liquid Subcooling Economizer Heat Exchanger, External High-Efficiency Oil Separator, Auxiliary Oil Cooler, Companion Flanges, Advanced Diagnostic Protection Modules.

Ruifujie has built a strong reputation over more than 20 years as a global manufacturer and exporter of commercial and industrial refrigeration machinery. We supply high-efficiency screw, semi-hermetic reciprocating, scroll, and rotary compressors, as well as turnkey cold storage facilities and process cooling equipment.

Backed by full OEM/ODM manufacturing support, strict multi-point quality testing, and factory-direct pricing, Ruifujie partners with contractors, system integrators, and distributors across the Americas, Europe, the Middle East, and Asia-Pacific.

Need performance software runs, or formal factory quotes for the 06TTR301? Submit your project details below, and the Ruifujie technical team will respond with a tailored commercial proposal within 8 business hours.