The Refcomp SW3H-24000 is a semi-hermetic screw refrigeration compressor engineered for HVAC water chiller applications. It combines flexible capacity regulation, integrated pressure safety protection, and high-precision suction filtration to deliver dependable performance across varying cooling loads.
For screw compressor HVAC systems, the SW3H-24000 offers four-step or optional stepless capacity regulation. Its slide-valve mechanism adjusts output to changing cooling demand, helping improve load matching and reduce unnecessary full-load operation.
The internal safety valve of this semi-hermetic refrigeration compressor connects the high- and low-pressure sides, helping protect against excessive pressure differences. Precise opening and reliable reset provide an additional safeguard during abnormal operating conditions.
Star-delta starting helps reduce initial motor current compared with direct-on-line starting, easing electrical demand during startup. Suction-gas cooling removes motor heat, supporting stable operation and effective temperature management.
The integrated 100 μm suction filter captures impurities from incoming refrigerant gas before they reach the motor. This helps reduce internal contamination and protects critical components from foreign particles, supporting reliable compressor operation.
| Model | SW3H-24000 |
|---|---|
| Rated power | 240HP / 179KW |
| Displacement 50/60Hz | 600 / 720 m³/hr |
| Weight | 1050 KG |
| Capacity Regulation | 25%, 50%, 75%, 100% 4-step; 25%–100% stepless |
| Standard Motor | Y/△ – 400V/3/50Hz – 460/3/60Hz |
| Star/Delta Start Current | 595 / 1802A |
| Max operating current | 360A |
Q1: How do I determine whether the SW3H-24000 is suitable for my cooling system?
For screw compressor HVAC selection, provide the required cooling capacity, refrigerant, evaporating and condensing temperatures, power supply and expected load conditions. Compare these requirements with the manufacturer's approved operating range before selecting the compressor.
Q2: How should I choose the capacity regulation configuration?
For a variable capacity screw compressor, consider the expected load variation and required control precision. Confirm whether four-step or stepless regulation is needed, and check controller compatibility before ordering.
Q3: What should I check when replacing an existing compressor?
When replacing a screw compressor for air conditioning, compare the mounting dimensions, suction and discharge connections, oil-line fittings and available maintenance space. Verify compatibility with the existing equipment drawings and control system.
Q4: What checks should be completed before initial startup?
Before commissioning a screw compressor HVAC system, verify the oil circuit, suction and discharge valve positions, motor wiring, phase sequence and protection circuits. Follow the manufacturer's commissioning instructions to identify potential installation or electrical issues before operation.
