Emerson Alco 065406 Moisture Indicator

The Emerson Alco 065406, model HMI-1TT3, is a professional-grade hermetic moisture indicator designed for rigorous field use in commercial refrigeration and HVAC systems. Featuring a 3/8" ODF sweat connection and a robust, corrosion-resistant all-brass body, this liquid line sight glass and indicator operates at a 680 PSI maximum working pressure. It is the designated direct replacement for 014L0182, ensuring seamless compatibility during system retrofits or repairs. Engineered with a large-diameter fused glass eyepiece, it provides a high-visibility, wide-angle view to detect flash gas, bubbles, or low refrigerant charges. The high-sensitivity crystal element utilizes accurate color calibration to monitor refrigerant moisture content across CFC, HCFC, and HFC refrigerants, including R-134a, R-404A, and R-410A. Its fully hermetic, leak-free construction and solid copper extensions simplify brazing and maintain system integrity even in high-vibration applications. This unit allows technicians to verify filter-drier effectiveness by delivering precise ppm-level moisture readings at varying operating temperatures.

• Universal Compatibility: Validated for use with all common CFC, HCFC, and HFC refrigerants, eliminating the need for multiple stocking units.
• Enhanced Visibility: The broad viewing window allows for rapid assessment of liquid line conditions and subcooling sufficiency.
• Reliable Monitoring: Provides high-accuracy crystal indicators that react to minute moisture levels, protecting compressor life and system performance.
• Durable Construction: Features a leak-proof hermetic design with an all-brass body and copper connections for longevity in harsh environments.
• Simplified Installation: Designed for sweat-on application with extended connections that protect the internal element during brazing.

Is the HMI-1TT3 compatible with POE oils and R-410A high-pressure systems?
Yes, this moisture indicator is specifically rated for a 680 psig maximum working pressure, making it suitable for modern R-410A systems and compatible with both mineral and POE/PVE oils used in HFC applications.

What does it mean if the indicator is pink immediately after opening the box?
This is a standard occurrence. The high-sensitivity element reacts to the ambient humidity in the atmosphere. Once installed in a sealed, dehydrated system, the indicator will transition to the "Dry" color calibration as the refrigerant circulates through the filter-drier.

Where is the optimal placement for the 065406 in the refrigerant circuit?
For the most accurate diagnostics, install this unit in the liquid line immediately downstream of the filter-drier and upstream of the expansion valve (TXV/EEV) to monitor both moisture presence and liquid state before metering.

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.