Refcomp SW3L-5000 50HP 37KW Semi-Hermetic AC Twin-Screw Refrigeration Compressor
SW3L-5000 semi-hermetic screw compressor
,50HP 37KW twin-screw refrigeration compressor
,semi-hermetic AC screw compressor
RefComp's 5/6 asymmetric rotor profile helps the AC screw compressor achieve smooth compression while reducing gas pulsation, vibration and operating noise.
Matched bearing assemblies support axial and radial rotor loads. High-precision bearing components and dedicated lubrication passages help reduce friction and mechanical wear in this semi-hermetic screw compressor.
An internal safety valve connects the high- and low-pressure sides, helping prevent excessive pressure differentials within the compressor housing and supporting safe operation.
The INT69 SNY protection module works with six series-connected PTC thermistors to monitor motor temperature and provide protection against overheating, reverse rotation and phase loss.
| Parameter | Value |
|---|---|
| Model | SW3L-5000 |
| Rated power | 50HP / 37KW |
| Exhaust volume 50/60Hz | 175/210 m³/hr |
| Weight | 265 Kg |
| Capacity Regulation | 100%, 75%, 50%, 25% (stepless 100%–25%) |
| Standard motor | Y/△ – 400V/3/50Hz – 460/3/60Hz |
| LRA Y/Δ | 134/406 A |
| Max Operating Current | 88 A |
Q1: How should capacity regulation be configured for an AC screw compressor serving variable loads?
The SW3L series supports four-step regulation or stepless adjustment from 25% to 100%. Select the appropriate method according to the system's load variations and controller compatibility.
Q2: What electrical requirements should be confirmed before installation?
For an air conditioning screw compressor installation, verify the power supply, motor starting arrangement, phase sequence and electrical protection settings. Ensure the starter is compatible with the motor configuration before commissioning.
Q3: What should I check if the motor protection module trips unexpectedly?
Check the INT69 SNY indication, PTC sensor connections, phase sequence and motor operating temperature. Identify and correct the underlying fault before resetting the protection module.
Q4: What information should I provide when requesting technical support for a low-temperature screw compressor?
Provide the model, refrigerant, operating frequency, suction and discharge pressures, temperatures and protection alarm details. This information helps technicians assess both the refrigeration screw compressor and possible system-side problems.
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