The Refcomp SP2L0400 / SP2L040E is a 4HP (3KW) semi-hermetic reciprocating compressor engineered for low-temperature refrigeration, including freezing room applications. It is compatible with R22, R407C, R134a, R404A and R507 refrigerants, and is built around an optimized internal structure that supports stable, efficient operation under demanding cold-storage conditions.
Optimized internal gas passages help reduce intake resistance and exhaust flow losses. The compact integrated structure brings key components together, simplifying the compressor layout while supporting smoother refrigerant flow in low-temperature applications.
The high-density suction filter captures impurities from refrigerant gas before they enter the compression chamber, helping protect the motor and internal components from contamination. Its external installation makes inspection and replacement more convenient, reducing the complexity of routine maintenance.
The combination of sliding and thrust bearings accommodates both radial and axial loads during compressor operation. High-precision fitting and effective lubrication help reduce friction, vibration and operating noise, supporting smoother mechanical operation and reduced component wear.
The motor supports delta and star connection configurations, giving installers flexibility to match the compressor with the specified three-phase power supply. This makes electrical integration more convenient and helps ensure the motor is correctly configured before commissioning.
| Model | SP2L0400, SP2L040E |
|---|---|
| Rated Power | 4HP / 3KW |
| Exhaust Volume (50Hz / 60Hz) | 21 / 25.7 m³/hr |
| Refrigerant Type | R22, R407C, R134a, R404A, R507 |
| Weight | 85KG |
| Oil Charge | 1.8L |
| Voltage | △230V/3/50Hz, Y400V/3/50Hz |
| Starting Current PW / DOL | - / 49A |
| Max Operating Current | 10A |
When selecting a semi-hermetic compressor, consider the required cooling capacity, refrigerant, evaporating and condensing temperatures, ambient conditions and power supply. The SP2L0400 is a low-temperature reciprocating compressor, so its operating conditions should be checked against the actual refrigeration application.
The motor supports delta and star connection configurations. Before installation, check the motor nameplate, wiring diagram and available site power supply to ensure the correct connection is selected.
The built-in filter captures impurities before they enter the compression chamber, helping keep internal components cleaner. This is particularly important for a semi-hermetic piston compressor, where maintaining clean refrigerant flow helps protect the internal mechanical assembly.
Pay attention to lubrication condition, abnormal mechanical noise, vibration and suction filter cleanliness. Early inspection of these conditions helps identify potential wear or contamination before they develop into more serious operating problems.
