Refcomp SW3L-11500 Screw Refrigeration Compressor For Freezing Room
Model number:SW3L-11500
Brand:Refcomp
Nominal Power:115HP/89KW
Exhaust volume 50/60Hz:380/456 m³/hr
Refrigerant:R22,R134a,R407C,R404A,R507A,R410a
Description
Products Description
Rotors: Engineered with an asymmetric screw rotor profile featuring a 5/6 lobe combination, this screw refrigeration compressor ensures ideal meshing, high structural strength, and minimal gas pulsation. The optimized length-to-diameter ratio enhances high-pressure performance, making it exceptionally reliable for continuous operation.
Capacity Regulation: Designed for precise thermal load adaptation, the internal slider valve mechanism supports 4-step capacity regulation (25%, 50%, 75%, full load) or continuous stepless control from 25% to full load. This ensures tight internal sealing and minimizes gas bypass, optimizing the part-load efficiency of the screw refrigeration compressor.
Motor Protection: Equipped with an INT69 SNY protection module and six series-connected PTC thermistors embedded directly in the windings, this advanced safety system actively guards against excessive temperatures, phase loss, and phase reversal, providing real-time diagnostic feedback to protect the screw refrigeration compressor.
Stop Valves: The unit features 360° rotatable suction and discharge stop valves for flexible pipeline alignment and simple installation, complemented by an integrated discharge check valve that reliably prevents refrigerant backflow during system shutdown.
Parameter Table
| Model | SW3L-11500 | |
| Nominal Power | 115HP/89KW | |
| Displacement(50/60Hz) | 380/456 m³/hr | |
| Energy regulation | 100%,75%,50%,25%(stepless 100%-25%) | |
| Weight | 665KG | |
| LRA Y/Δ | 276/876A | |
| RLA | 196A | |
FAQ
Q: What specific performance metrics should be submitted when requesting a custom refrigeration plant layout?
A: Provide the exact evaporating and condensing temperature envelopes along with expected ambient extremes to ensure the 380 m³/hr (50Hz) displacement aligns correctly with your system's required mass flow rate.
Q: How should oil return lines and separators be positioned relative to the compressor during skid assembly?
A: The external oil separator must be piped directly to the Ф16mm (5/8 in) SAE oil connection, maintaining a minimal drop to ensure smooth oil replenishment during variable-load transitions.
Q: What specific verification is required for the motor protection circuitry prior to wet commissioning?
A: Ensure the INT69 SNY module's internal relay contacts are properly wired into the main control safety chain to trip instantly upon detecting phase loss or thermal overload.
Q: What preventive diagnostics should be monitored to detect early wear in heavy-duty refrigeration cycles?
A: Regularly analyze oil contamination levels and motor winding resistance trends to safeguard the high-precision bearing and rotor sets against premature degradation.
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