Bard 8406-140BX Pressure Switch
The Bard 8406-140BX Pressure Switch is a critical OEM safety component engineered for precision monitoring of refrigerant suction pressure in Bard wall-mount HVAC units. This low pressure switch 40PSIG serves as the primary line of defense against compressor damage, automatically opening the control circuit if system pressure drops below the 40 PSI threshold. Designed for direct-mount installation, it features high-durability housing to withstand the vibration and temperature fluctuations common in industrial HVAC environments. By integrating a 40 PSI low pressure cutout, this switch ensures the system remains protected during low charge conditions, airflow restrictions, or potential leaks. For service technicians, utilizing this genuine Bard HVAC replacement part is essential for maintaining factory safety standards and preventing costly compressor failure in W12AB, W18AB, W24AB, and W36AB series models. Its non-adjustable, snap-acting sensor provides reliable, repeatable set-point stability for simplified electrical troubleshooting and long-term system integrity.
Key Benefits for the Contractor:- Engineered Protection: Specifically calibrated to a 40 PSIG open set point to prevent compressor overheating during low-refrigerant events.
- OEM Compatibility: Exact replacement for Bard part number 8406-140, ensuring seamless fitment and electrical alignment without field modification.
- Simplified Diagnostics: Durable SPST switch logic allows technicians to quickly verify low-side safety status during "no cooling" service calls.
- Industrial Build Quality: Hermetically sealed sensor and 1/4" SAE flare fitting provide a leak-resistant connection in high-demand environments.
What causes this switch to trip frequently?
Nuisance tripping is often caused by restricted airflow (dirty filters/coils), low refrigerant charge, or a failing evaporator fan motor. If the Bard 8406-140BX opens, confirm suction pressures before assuming the switch is defective.
Can I use an adjustable universal switch instead?
While universal switches exist, using the genuine OEM 8406-140BX is recommended to maintain the specific safety parameters and UL listing of the Bard wall-mount unit.
Is the 40 PSIG rating a manual or automatic reset?
This switch operates on an automatic reset logic, typically closing when pressure rises back to a safe operating level (often around 60-80 PSIG, depending on the specific Bard control board sequence).
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $32.36
-65%$32.36
$11.33Bard 8406-140BX Pressure Switch
The Bard 8406-140BX Pressure Switch is a critical OEM safety component engineered for precision monitoring of refrigerant suction pressure in Bard wall-mount HVAC units. This low pressure switch 40PSIG serves as the primary line of defense against compressor damage, automatically opening the control circuit if system pressure drops below the 40 PSI threshold. Designed for direct-mount installation, it features high-durability housing to withstand the vibration and temperature fluctuations common in industrial HVAC environments. By integrating a 40 PSI low pressure cutout, this switch ensures the system remains protected during low charge conditions, airflow restrictions, or potential leaks. For service technicians, utilizing this genuine Bard HVAC replacement part is essential for maintaining factory safety standards and preventing costly compressor failure in W12AB, W18AB, W24AB, and W36AB series models. Its non-adjustable, snap-acting sensor provides reliable, repeatable set-point stability for simplified electrical troubleshooting and long-term system integrity.
Key Benefits for the Contractor:- Engineered Protection: Specifically calibrated to a 40 PSIG open set point to prevent compressor overheating during low-refrigerant events.
- OEM Compatibility: Exact replacement for Bard part number 8406-140, ensuring seamless fitment and electrical alignment without field modification.
- Simplified Diagnostics: Durable SPST switch logic allows technicians to quickly verify low-side safety status during "no cooling" service calls.
- Industrial Build Quality: Hermetically sealed sensor and 1/4" SAE flare fitting provide a leak-resistant connection in high-demand environments.
What causes this switch to trip frequently?
Nuisance tripping is often caused by restricted airflow (dirty filters/coils), low refrigerant charge, or a failing evaporator fan motor. If the Bard 8406-140BX opens, confirm suction pressures before assuming the switch is defective.
Can I use an adjustable universal switch instead?
While universal switches exist, using the genuine OEM 8406-140BX is recommended to maintain the specific safety parameters and UL listing of the Bard wall-mount unit.
Is the 40 PSIG rating a manual or automatic reset?
This switch operates on an automatic reset logic, typically closing when pressure rises back to a safe operating level (often around 60-80 PSIG, depending on the specific Bard control board sequence).
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Bard 8406-140BX Pressure Switch is a critical OEM safety component engineered for precision monitoring of refrigerant suction pressure in Bard wall-mount HVAC units. This low pressure switch 40PSIG serves as the primary line of defense against compressor damage, automatically opening the control circuit if system pressure drops below the 40 PSI threshold. Designed for direct-mount installation, it features high-durability housing to withstand the vibration and temperature fluctuations common in industrial HVAC environments. By integrating a 40 PSI low pressure cutout, this switch ensures the system remains protected during low charge conditions, airflow restrictions, or potential leaks. For service technicians, utilizing this genuine Bard HVAC replacement part is essential for maintaining factory safety standards and preventing costly compressor failure in W12AB, W18AB, W24AB, and W36AB series models. Its non-adjustable, snap-acting sensor provides reliable, repeatable set-point stability for simplified electrical troubleshooting and long-term system integrity.
Key Benefits for the Contractor:- Engineered Protection: Specifically calibrated to a 40 PSIG open set point to prevent compressor overheating during low-refrigerant events.
- OEM Compatibility: Exact replacement for Bard part number 8406-140, ensuring seamless fitment and electrical alignment without field modification.
- Simplified Diagnostics: Durable SPST switch logic allows technicians to quickly verify low-side safety status during "no cooling" service calls.
- Industrial Build Quality: Hermetically sealed sensor and 1/4" SAE flare fitting provide a leak-resistant connection in high-demand environments.
What causes this switch to trip frequently?
Nuisance tripping is often caused by restricted airflow (dirty filters/coils), low refrigerant charge, or a failing evaporator fan motor. If the Bard 8406-140BX opens, confirm suction pressures before assuming the switch is defective.
Can I use an adjustable universal switch instead?
While universal switches exist, using the genuine OEM 8406-140BX is recommended to maintain the specific safety parameters and UL listing of the Bard wall-mount unit.
Is the 40 PSIG rating a manual or automatic reset?
This switch operates on an automatic reset logic, typically closing when pressure rises back to a safe operating level (often around 60-80 PSIG, depending on the specific Bard control board sequence).
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
