The SW3L-22000 screw type refrigeration compressor offers stepped or stepless slide-valve capacity control to accommodate changing cooling demands. This helps match compressor output to actual system loads and reduces unnecessary full-capacity operation.
Optimized internal gas passages help reduce suction resistance and flow losses, supporting smoother refrigerant movement. The integrated housing keeps key components in a compact arrangement, making this industrial refrigeration screw compressor easier to accommodate within refrigeration equipment.
The built-in safety valve connects the high- and low-pressure sides to help prevent excessive internal pressure differences. Its precise opening and reliable reseating provide additional protection against abnormal pressure conditions, helping safeguard the compressor's internal components.
The integrated 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 cleaner and more reliable compressor operation.
| Model | SW3L-22000 |
|---|---|
| Rated power | 220HP / 164KW |
| Displacement 50/60Hz | 700 / 840 m³/hr |
| Weight | 980 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 | 543 / 1645 A |
| Max operating current | 300 A |
When selecting this screw type refrigeration compressor, provide the required cooling capacity, refrigerant, evaporating and condensing temperatures, power supply and expected load conditions. Confirm that the system requirements fall within the compressor's approved operating range.
For a screw compressor for low-temperature refrigeration, ensure that the external oil separation and return arrangement meets the compressor's lubrication requirements. Check oil-line connections, filtration and oil-flow monitoring devices before commissioning.
Before starting this refrigeration screw compressor, verify that the available power supply matches the motor specifications. Check the star-delta starter wiring, phase sequence and INT69 SNY protection connections against the manufacturer's electrical diagram.
If the screw type refrigeration compressor does not adjust output correctly, verify the selected stepped or stepless control configuration, controller signals and solenoid-valve wiring. If these checks are satisfactory, have a qualified technician inspect the slide-valve control assembly.
