Refcomp SW3H-5000 50HP R407C Screw Refrigeration Compressor for HVAC System
Refcomp SW3H-4000 screw compressor
,50HP R407C refrigeration compressor
,screw compressor for HVAC system
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Compact High-Pressure Housing
The screw refrigeration compressor features a 25-bar housing with optimized internal gas passages to reduce flow resistance. Its compact structure integrates the suction filter, shut-off valve and temperature sensor.
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Precision Bearing System
Matched bearing assemblies support axial and radial rotor loads, while precision rolling elements and wear-resistant raceways help the semi-hermetic screw compressor reduce friction, vibration and operating noise.
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Flexible Shut-Off Valve Configuration
The suction and discharge shut-off valves can rotate through 360° for flexible piping connections. An internal discharge check valve helps prevent refrigerant backflow during shutdown.
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Star-Delta Motor Starting and Cooling
The RefComp screw compressor uses star-delta motor starting to limit startup current. Suction-gas cooling helps maintain suitable motor temperatures, with standard three-phase supplies of 400V/50Hz and 460V/60Hz.
| Parameter | Value |
|---|---|
| Model | SW3H-5000 |
| Rated power | 50HP / 37KW |
| Exhaust volume 50/60Hz | 150 / 180 m³/hr |
| Weight | 255 Kg |
| Capacity Regulation | 100%, 75%, 50%, 25% (stepless 100%–25%) |
| Standard motor | Y/△ – 400V/3/50Hz – 460V/3/60Hz |
| LRA Y/Δ | 134 / 406 A |
| Max Operating Current | 90 A |
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Q1: How do I confirm the required compressor size for my refrigeration system?
For screw refrigeration compressor selection, provide the refrigerant, required cooling capacity, evaporating and condensing temperatures, and operating frequency. The SW3H-5000 has a displacement of 150 m³/h at 50 Hz and 180 m³/h at 60 Hz, but actual cooling capacity must be confirmed using manufacturer performance data.
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Q2: What should be verified before the first startup?
Check the motor starter wiring, protection settings, refrigerant piping, oil-line connection and valve positions. Complete the required leak testing, evacuation and pre-start inspections according to the manufacturer's instructions.
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Q3: How should capacity control be configured for varying refrigeration loads?
This semi-hermetic refrigeration compressor series offers four capacity stages at 25%, 50%, 75% and 100%, or stepless regulation from 25% to 100%. Confirm the supplied control configuration and coordinate the capacity adjustment sequence with the refrigeration system controller.
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Q4: What should I check if cooling performance falls below expectations?
Compare the evaporating and condensing conditions, refrigerant supply and capacity-control position with the original selection data. Check condenser performance and refrigerant flow before concluding that the screw refrigeration compressor is responsible for insufficient cooling.
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