Welcome back to VALUE Product Research Studio. In this episode, VALUE will introduce a crucial tool for operations like vacuuming, refrigerant charging and recovery - the Refrigerant Charging Manifold Gauge Set. How to read the gauges? How to perform zero calibration? VALUE has summarized 3 practical Refrigerant Charging Manifold Gauge Set usage techniques to help you solve potential challenges in your work.

During operations including system vacuuming, refrigerant charging/recovery, system debugging and troubleshooting, the Refrigerant Charging Manifold Gauge Set enables precise measurement of refrigerant pressure to ensure proper system operation and optimal performance.

So how do we read the values on the gauge dials during use? And how to perform zero reset operations? What are the functions of the service ports on both ends of the Refrigerant Charging Manifold Gauge Set?

Straight to the point - here are the professional tips!

PART 1

How to Read Refrigerant Manifold Gauge Values?

Using VALUE's popular VMG-2-R410A-B Mechanical Dual Gauge as an example - suitable for refrigerant charging/recovery operations with R22, R134a, R410A, and R407C refrigerants.

When reading the values on the gauge dial, first observe the contents of the dial from outside to inside: the blue inner and outer rings show the pressure values of the refrigerant, with psi and bar as the two unit values respectively, where 1bar is one pressure unit.

The yellow inner ring shows the temperature values corresponding to different types of refrigerants, with Celsius [℃] and Fahrenheit [F] as the two unit values respectively.

During installation and maintenance operations, we simply read the corresponding values indicated by the pointer; for example, the dial shows: at 10bar pressure, the temperature of R410A refrigerant is 10.4℃;

PART 2

How to calibrate when the Refrigerant Manifold Gauge pointer is not at zero?

Before using the Refrigerant Manifold Gauge for operations, be sure to check whether the dial pointer points to the "0" mark. If the pointer is not at "0", you can open the white nylon plug on the dial and use a flathead screwdriver to perform zero calibration on the Refrigerant Manifold Gauge.

PART 3

What are the functions of the valve ports at both ends of the Refrigerant Manifold Gauge Set?

The two end connections of the Refrigerant Manifold Gauge Set are called refrigerant hose hanging adapters. When refrigerant hoses are temporarily idle, these valve ports can connect to blue and red refrigerant hoses to prevent dust and particles from entering, which could otherwise affect the measurement accuracy during operation and compromise subsequent system vacuuming, refrigerant charging, and recovery performance.

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Master your tools, master your time!" That concludes the 3 practical tips for using Refrigerant Manifold Gauge Sets. Have you mastered them all? As a provider of HVAC tools and accessory solutions, VALUE is committed to innovating professional, user-friendly refrigeration tools that help HVAC installation and maintenance technicians improve work efficiency and make their jobs easier.