Tech Bulletin: Understanding the Process Port on Replacement Compressors

Overview:
Some refrigeration compressors are equipped with a process port, which serves as an access point for charging the compressor with refrigerant during factory installation. This port is not always present on all compressors but is commonly found in refrigeration applications.

Key Considerations:

• Replacement compressors may include a process port along with standard service ports. These ports are often shipped plugged to maintain system integrity.

• If present, the process port can be sealed by brazing it shut or modified by brazing an access stub into it. This allows for future serviceability or an alternate connection when attaching gauges.

Best Practices:

• Always inspect the process port on replacement compressors before installation.

• If the port is not required for future service, it is recommended to braze it shut to prevent leaks.

• If an alternate access point is beneficial for maintenance, consider brazing an access stub to facilitate easier system diagnostics.

For further guidance on proper brazing techniques and system integrity, refer to manufacturer recommendations and industry best practices.