Key Features & Performance Highlights
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High Horsepower: Rated at 3 HP, providing substantial cooling capacity for large residential and commercial air conditioning systems.
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High Start Torque (HST): Equipped with a CSR (Capacitor Start/Run) motor, delivering the necessary power for reliable startup, even under high differential pressure.
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Wide Application Range: Optimized for High Back Pressure (HBP) systems, with an impressive evaporating range of $-23.3^\circ\text{C}$ to $12.8^\circ\text{C}$ ($\text{-10}^\circ\text{F}$ to $\text{55}^\circ\text{F}$), ensuring versatility.
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R-22 Refrigerant Compatibility: Designed exclusively for use with R-22, utilizing a Mineral Oil charge (Viscosity 37).
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Durable Reciprocating Technology: Known for its robust mechanical construction and long service life in demanding HVAC applications.
Technical Specifications
| Specification Category | Parameter | Value | Unit |
| General | Model No. | AWR5538EXC | – |
| Product Family | AW | – | |
| Refrigerant | R-22 | – | |
| Application | AC, HBP | – | |
| Performance | Horse Power (HP) | 3 | HP |
| Displacement | 63 | $\text{cm}^3$ | |
| Evap. Range | $-23.3^\circ\text{C}$ to $12.8^\circ\text{C}$ | ($\text{-10}^\circ\text{F}$ to $\text{55}^\circ\text{F}$) | |
| Electrical (50Hz) | Voltage / Freq. | 220-240V / 50Hz | 1PH |
| Locked Rotor Amps (LRA) | 92 | A | |
| Running Load Amps (RLA) | 14.2 | A | |
| Voltage Range | 198 to 264 | V | |
| Motor Type | CSR | – | |
| Mechanical | Technology | Reciprocating | – |
| Oil Charge | 1140 | cc | |
| Oil Type / Viscosity | Mineral | 37 | |
| Cooling | Fan | – |
Why Buy from Al Faisal A/C Spare Parts?
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Genuine Parts: We guarantee authentic Tecumseh products, ensuring manufacturer warranty compliance and system longevity.
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Expert Sizing Support: Our team provides technical guidance to ensure the 3 HP rating and operating range meet your specific system requirements.
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Immediate Availability: Minimize downtime with our reliable stock levels of critical, high-demand compressors.
Frequently Asked Questions (FAQ)
| Question | Answer |
| What does HBP mean? | HBP stands for High Back Pressure. This compressor is specifically designed for high-temperature applications like standard Air Conditioning (AC), where the evaporator temperature is relatively high. |
| Can I replace a different brand’s 3 HP R-22 compressor with this model? | The AWR5538EXC is a direct 3 HP replacement, but you must verify that the LRA, mounting configuration, and the required Mineral Oil type are compatible with your existing system. |
| What is High Start Torque (HST)? | HST means the motor generates a high rotational force upon startup. This is essential for HBP systems that often face high pressure differentials between the suction and discharge lines after a shutdown. |
| Is this unit compatible with synthetic oil? | No. This compressor is designed for Mineral Oil (Viscosity 37), which is compatible with R-22. Using synthetic oils (like POE for R-410A) will cause damage. |
| What is the significance of the 92 LRA? | LRA (Locked Rotor Amps) is the maximum current drawn when the motor attempts to start. The power system and starter components must be rated to handle this high initial amperage. |
