Installation Tips for Guchen High Voltage Compressors

High-voltage compressors play a crucial role in EV air conditioning systems, providing efficient cooling while operating under high-voltage conditions. Proper installation is essential to ensure the compressor’s longevity, safety, and optimal performance. This article outlines key installation guidelines for Guchen HV compressors and provides essential tips to help engineers and technicians achieve a successful installation.
 

1. Installation Dimensions and Orientation

One of the fundamental aspects of installing a high-voltage compressor is ensuring proper alignment and positioning. When mounting the compressor, consider the following:
 

• The compressor's main shaft should be installed at an angle of ±10° horizontally and ±5° longitudinally relative to the ground plane. This helps prevent excessive vibration and ensures smooth operation.
• Ensure adequate space around the compressor for efficient heat dissipation and maintenance access.
• The mounting bracket should be securely fastened to minimize movement during vehicle operation.

 

2. Refrigerant Oil Handling Precautions

Guchen compressors use RL68H POE refrigerant oil, which is hygroscopic, meaning it absorbs moisture from the air. To prevent moisture contamination, follow these best practices:

• After opening the suction and discharge ports, install the compressor into the air conditioning system within 5 minutes.
• Perform a thorough vacuuming process immediately after installation to remove any residual moisture or contaminants.
• Always store the compressor in a dry, sealed environment before installation to maintain oil integrity.

 

3. Proper Grounding of the Compressor

High-voltage systems require meticulous attention to electrical safety. It is mandatory to ground the compressor housing to prevent electrical hazards. A properly grounded compressor ensures:
◆ Enhanced electrical insulation and protection against voltage leaks.
◆ Improved safety for maintenance personnel.
◆ Reduced risk of electrical faults that could damage vehicle components.
 

4. Suction and Discharge Port Bolt Torque

The suction and discharge ports play a critical role in the functionality of the compressor. Over-tightening or under-tightening the connection bolts can lead to leaks or system inefficiencies. The recommended torque specification for the suction and discharge port bolts is:11±1 N·m
Use a calibrated torque wrench to achieve the correct tightening force and avoid excessive stress on the fittings.
 

5. Additional Installation Best Practices

To further enhance the reliability of the Guchen high-voltage compressor, consider these additional tips:
◆ Check system compatibility: Ensure that the compressor is compatible with the vehicle’s AC system specifications, including refrigerant type and voltage requirements.
◆ Inspect electrical connections: Secure all high-voltage connectors properly and verify insulation integrity to prevent short circuits.
◆ Perform system leak checks: Conduct a pressure test to ensure there are no refrigerant leaks before finalizing the installation.
◆ Follow manufacturer guidelines: Always refer to the official installation manual for model-specific recommendations and requirements.
 
Conclusion:
Proper installation of electric vehicle a/c compressor is essential for achieving reliable and efficient performance. By following these installation tips—ensuring correct mounting angles, handling refrigerant oil carefully, grounding the compressor, applying the correct bolt torque, and adhering to best practices—technicians can maximize the longevity and efficiency of the compressor while maintaining safety standards.
For more detailed technical specifications and installation support, refer to Guchen's official documentation or contact our engineering team compressor@guchen.com.