The Refcomp SW3L-5000 is a 50 HP (37 kW) semi-hermetic screw compressor engineered for refrigeration and process cooling applications. It combines flexible capacity regulation, integrated pressure protection, precision bearing support and efficient motor starting to deliver dependable continuous operation.
The SW3L-5000 offers stepped or stepless capacity control configurations to accommodate changing cooling demands. Its slide-valve mechanism matches compressor output to actual system loads, reducing unnecessary full-capacity operation.
An internal safety valve connects the high- and low-pressure sides of the compressor. Its precise opening and reliable reset help protect internal components against excessive pressure differences during abnormal operating conditions.
The multi-bearing arrangement supports axial and radial loads while maintaining stable rotor alignment. Precision fitting and effective lubrication reduce friction, vibration and operating noise, limiting mechanical wear during continuous operation.
Partial-winding starting reduces initial electrical demand compared with direct-on-line starting. The suction-gas cooling arrangement removes motor heat during operation, helping maintain stable motor temperatures and supporting reliable performance.
| Model | SW3L-5000 |
|---|---|
| Rated power | 50HP / 37KW |
| Displacement 50/60Hz | 175 / 210 m³/hr |
| Weight | 265 KG |
| Capacity Regulation | 25%, 50%, 75%, 100% 4-step; 25%–100% stepless |
| Standard Motor | Y/Δ – 400V/3/50Hz – 460/3/60Hz |
| Star/Delta Start Current | 134 / 406 A |
| Max operating current | 88 A |
Before using this screw AC compressor in an air-conditioning system, verify that the required refrigerant, cooling capacity, evaporating temperature and condensing temperature fall within the approved operating range. The SW3L series is primarily intended for low-temperature refrigeration and process cooling.
For a screw compressor in refrigeration systems, the controller must match the selected stepped or stepless capacity-control configuration. Confirm the control signals, solenoid-valve connections and operating logic before commissioning.
This 50 HP screw compressor requires an appropriately matched external oil separation and return arrangement. Verify the oil filter, flow monitoring and lubrication connections against the manufacturer's installation requirements to ensure proper oil circulation.
If the screw AC compressor stops following an INT69 SNY alarm, inspect the motor temperature, power supply, phase sequence and protection wiring. Identify and correct the underlying fault before restarting the compressor.
