Emerson Alco 056039 Power Assembly

The Emerson Alco 056039 Power Assembly, also identified as the XB-1019HCA-1B, is a critical component for maintaining precise superheat control in R22 refrigeration systems. This power assembly is engineered for durability and field serviceability, featuring a 1/4" SAE flare equalizer connection and a 5-foot capillary tube for versatile positioning. Designed for an application temperature range of -20°F to +50°F, it ensures stable evaporator performance across medium and high-temperature demands. The assembly includes the necessary capscrews for secure mounting to the valve body, facilitating a leak-free mechanical seal. When diagnosing TXV power element failure, this unit serves as a direct drop-in replacement, restoring system equilibrium and preventing floodback. Utilizing HC refrigerant charges, it provides a rapid response to load fluctuations, making it a reliable choice for contractors servicing legacy Emerson expansion valves in commercial HVACR environments.

Key Benefits for Technicians:

• Direct Interchangeability: Fully compatible with systems requiring the XB-1019HCA-1B power head, ensuring precise fitment.
• Broad Operating Envelope: Rated for -20 to +50 degree application, covering various evaporator setpoints.
• Simplified Installation: Includes stainless steel capscrews to maintain hardware integrity during replacement.
• Enhanced Reach: The 5ft capillary tube allows for flexible bulb placement even in cramped evaporator housings.
• Durable Construction: Built to withstand the high-head pressures and vibration typical of commercial R22 systems.

Common Technical Questions:

How do I confirm if this power assembly is compatible with my existing valve body?
This assembly is designed for the XB series and is a direct match for the 056039 part number. Verify your valve body flange matches the bolt pattern provided with these capscrews.

Can this unit be used with R407C or other R22 replacements?
The XB-1019HCA-1B is specifically charged for R22 refrigerant. Using it with alternative blends may result in an offset superheat curve, requiring manual adjustment of the expansion valve stem.

What is the proper procedure for bulb placement with this 5-foot capillary?
Secure the bulb at the 4 or 8 o’clock position on the suction line, ensuring maximum surface contact. Use the length of the 5ft capillary to avoid sharp kinks that could restrict the internal charge.

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.