The Refcomp SW3H-5000 is a 50 HP semi-hermetic screw compressor engineered for commercial refrigeration and HVAC applications using R407C refrigerant. Its design emphasizes efficient gas flow, durable bearing support, reliable filtration, and stable motor operation.
Optimized internal gas passages reduce intake resistance and flow losses. The compact, integrated housing supports smoother refrigerant flow while simplifying the overall compressor structure.
A combination of bearings handles axial and radial loads, while precision fitting and effective lubrication help reduce friction and mechanical noise. This arrangement supports smooth rotor movement and helps minimize wear on critical components.
The integrated 100 μm suction filter captures impurities from incoming refrigerant gas before they reach the motor. This helps protect internal components from contamination and reduces the risk of damage caused by foreign particles.
The semi-hermetic screw compressor uses star-delta starting to reduce initial motor current. Its suction-gas-cooled motor design supports effective heat removal, helping manage electrical demand during startup and maintain stable motor operation.
| Model | SW3H-5000 |
|---|---|
| Rated Power | 50 HP / 37 kW |
| Displacement (50/60 Hz) | 150 / 180 m³/hr |
| Weight | 255 kg |
| Capacity Regulation | 25%, 50%, 75%, 100% 4-step; 25%–100% stepless |
| Standard Motor | Y/△ – 400V/3/50Hz – 460V/3/60Hz |
| Star/Delta Start Current | 134 / 406 A |
| Max Operating Current | 90 A |
When selecting an HVAC screw compressor, provide the required cooling capacity, refrigerant, evaporating and condensing temperatures, and power supply. As a high-temperature series model, its operating range should be verified against the actual system requirements.
For this 50 HP screw compressor, confirm that the power supply matches the motor specifications and that the star-delta starter is correctly configured. Check the phase sequence, electrical protection, and wiring connections before commissioning.
Before starting the HVAC screw compressor, ensure the suction piping is clean and free from installation debris. Proper system cleaning and filtration help prevent foreign particles from entering the compressor during initial operation.
When replacing a screw compressor for HVAC systems, compare mounting dimensions, suction and discharge connections, oil-line requirements, electrical supply, and control compatibility. Confirm these details against the equipment drawings before installation.
