The Refcomp SW3H-9000 is a 90HP semi-hermetic screw compressor engineered for cold room and industrial refrigeration applications. It combines optimized refrigerant flow, reliable internal pressure protection, precision bearing support, and efficient motor starting and cooling to deliver stable, long-term performance.
The SW3H-9000 semi-hermetic screw compressor features optimized internal gas passages that reduce intake resistance and flow losses. Its compact, integrated housing supports smoother refrigerant flow while simplifying equipment layout and component integration.
The built-in safety valve connects the high- and low-pressure sides, helping protect the compressor against excessive internal pressure differences. Its precise opening and reset provide an additional safeguard during abnormal operating conditions.
A carefully arranged bearing system handles axial and radial loads, helping maintain stable rotor alignment. Precision fitting and effective lubrication reduce friction and mechanical noise, supporting smoother operation and minimizing wear on critical components.
This high-temperature screw compressor uses star-delta starting to reduce initial motor current compared with direct-on-line starting. Suction-gas cooling helps remove motor heat, supporting stable operating temperatures and more manageable electrical demand.
| Model | SW3H-9000 |
|---|---|
| Rated Power | 90HP / 67KW |
| Displacement (50/60Hz) | 237 / 284 m³/hr |
| Weight | 420KG |
| Capacity Regulation | 25%, 50%, 75%, 100% 4-step; 25%–100% stepless |
| Standard Motor | Y/△ – 400V/3/50Hz – 460/3/60Hz |
| Star/Delta Start Current | 193 / 580A |
| Max Operating Current | 140A |
Q1: How do I determine whether the SW3H-9000 is suitable for my refrigeration system?
When selecting a semi-hermetic screw compressor, provide the required cooling capacity, refrigerant, evaporating and condensing temperatures, power supply, and expected load conditions. Confirm the compressor's operating range rather than selecting by horsepower alone.
Q2: What should be checked before commissioning the SW3H-9000?
Before starting this 90HP screw compressor, verify the oil circuit, suction and discharge valve positions, motor wiring, phase sequence, and safety controls. Follow the commissioning instructions to reduce the risk of startup faults.
Q3: What should I do if the INT69 SNY motor protection module triggers an alarm?
If the semi-hermetic screw compressor trips, check the indicated fault and inspect motor temperature, phase sequence, phase loss, and protection wiring. Identify and correct the underlying problem before resetting the protection module.
Q4: What should I consider when replacing an existing compressor with the SW3H-9000?
For a refrigeration screw compressor replacement, compare the mounting dimensions, suction and discharge connections, oil-line fittings, and capacity-control interface. Verify controller compatibility and available installation space before proceeding.
