Four Seasons 36577 HVAC Cut-Off Switch

Overview of Four Seasons Pressure Switch 36577

The Four Seasons Pressure Switch 36577 is designed for precise HVAC system control in select BMW models. This high cut-out pressure switch ensures reliable operation by monitoring system pressure and activating or deactivating components as needed.

• Compatible with BMW 525i, 535i, 535is, 635CSi, and M6 models
• Operates at 12 volts with a high cut-out style
• System-mounted pressure switch with male 1/8 inch pipe thread fitting
• Durable plastic and metal construction for long-lasting performance
• Wire lead connector with two terminals for secure electrical connection
• Meets or exceeds OEM specifications for fit and function

Detailed Product Features and Specifications

The Four Seasons Pressure Switch 36577 is a pressure-type HVAC cut-off switch designed to maintain system safety and efficiency. It features a closed compressor open/closed state and operates between 305 psi (on) and 450 psi (off) to protect the system from excessive pressure. The switch is system-mounted and uses a male fitting with a 1/8 inch pipe thread size (13/32 x 27). Its wire lead connector design includes two terminals, facilitating straightforward installation and reliable electrical contact. Constructed from a combination of plastic and metal materials, this switch is built to withstand typical automotive HVAC conditions. The 12-volt rating aligns with standard vehicle electrical systems, ensuring compatibility with BMW HVAC components.

About the Four Seasons Pressure Switch Product Line

The Pressure Switch line from Four Seasons focuses on delivering precise pressure control components for automotive HVAC systems. These switches are engineered to meet or exceed OEM standards, providing dependable cut-off functionality to protect compressors and other system parts. The 36577 model exemplifies this line’s commitment to quality and fitment accuracy, specifically tailored for BMW vehicles requiring high cut-out pressure switches.

Common Applications and Problem Resolution

• Prevents compressor damage by cutting off operation at high system pressures
• Maintains HVAC system efficiency by regulating pressure thresholds
• Resolves issues related to compressor cycling due to pressure irregularities
• Helps avoid system leaks caused by overpressure conditions
• Ensures proper HVAC system shutdown to protect components

Installation Notes and Tips

• Verify compatibility with BMW 525i, 535i, 535is, 635CSi, and M6 models before installation
• Ensure system is depressurized before removing the old pressure switch
• Use appropriate tools to install the male 1/8 inch pipe thread fitting securely
• Connect wire leads carefully to maintain proper electrical connections
• Test system pressure operation after installation to confirm correct switch function

Quality Assurance and Warranty

The Four Seasons Pressure Switch 36577 meets or exceeds OEM specifications, ensuring reliable performance and fitment. Manufactured with durable plastic and metal materials, this switch is designed for longevity in automotive HVAC systems. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty covering defects in material and workmanship.