Global Parts 1711766 A/C Trinary Switch

Reliable A/C Trinary Switch for BMW Models

The Global Parts A/C Trinary Switch (Part Number 1711766) is designed to maintain optimal air conditioning system performance in select BMW vehicles. This trinary normal open switch helps protect your A/C compressor by monitoring pressure levels accurately.

• Type: Trinary normal open switch
• Connection: 7/16"-20 female fitting
• High-pressure operation: 455 psi
• Low-pressure operation: 28 psi
• Compatible with BMW 540i, 735iL, 740iL, 750iL, 840Ci, 850Ci, 850CSi, and 850i models

Technical Details and Functionality

This A/C trinary switch is engineered to monitor both high and low refrigerant pressures within the air conditioning system. The normal open design ensures the switch activates only when pressure thresholds are met, protecting the compressor from damage due to abnormal pressure conditions. The 7/16"-20 female fitting allows for secure and precise installation in the HVAC system. With a high-pressure cut-off at 455 psi and a low-pressure cut-off at 28 psi, this switch helps maintain system integrity and prevents costly repairs.

Compatible BMW Models and Applications

This part is specifically compatible with a range of BMW vehicles, including the 540i, 735iL, 740iL, 750iL, 840Ci, 850Ci, 850CSi, and 850i. It is ideal for owners seeking a reliable replacement A/C trinary switch to restore proper HVAC function and safeguard the compressor in these models.

• Prevents compressor damage from high-pressure conditions
• Protects against low-pressure refrigerant scenarios
• Ensures proper cycling of the A/C clutch
• Maintains efficient air conditioning system operation
• Helps avoid system shutdowns due to pressure faults

Installation Notes and Tips

When installing the Global Parts 1711766 A/C trinary switch, ensure the system is depressurized and the vehicle is off. Verify the 7/16"-20 female fitting matches the existing connection point. Proper torque specifications should be followed to avoid leaks. It is recommended to inspect the A/C system for leaks or other issues before installation to ensure optimal performance.

Quality Assurance and Warranty

Global Parts manufactures this A/C trinary switch to meet OEM specifications for fit and function. While specific warranty details are not provided, Global Parts products typically undergo quality control testing to ensure reliability and durability in automotive HVAC applications.