System Evacuation

Condensing unit liquid and suction valves are closed to contain the charge within the unit. The unit is shipped with the valve stems closed and caps installed. Do not open the valves until the system is evacuated.

1.Connect the vacuum pump with 250-micron capability to the services valves.

2.Evacuate the system to 250 microns or less using suction and liquid service valves. Using both valves is necessary for some compressors create a mechanical seal separating the sides of the system.

3.Close pump valve and hold vacuum for 10 minutes. Typically pressure will rise during this period

•If the pressure rises to 1000 microns or less and remains steady the system is considered leak-free; proceed to startup.

•If the pressure rises above 1000 microns but holds steady below 2000 microns, moisture and/or noncondensibles may be present or the system may have a small leak. Return to step 2: If the same result is encountered, check for leaks as previously indicated and repair as necessary then repeat evacuation.

•If pressure rises above 2000 microns, a leak is present. Check for a leaks as previously indicated and repair as necessary then repeat evacuation.

Manifold valve

Low pressure side valve		High pressure side valve
Low pressure side valve		Charging hose
Charging hose		Charging hose
Charging hose
B	A	Vacuum pump
B

Caution:

Refrigerant must not be discharged into the atmosphere.

After connecting the piping, check the joints for leakage with a gas leak detector.

Installation & service manual _12

R-410A specifications

The Plantronics R-410A is a sophisticated headset designed for users who demand clarity, comfort, and connectivity in a professional environment. Renowned for its robust build and advanced features, this headset offers a seamless audio experience for both office environments and remote work.

One of the standout features of the R-410A is its exceptional audio quality, powered by Plantronics' proprietary audio technology. With wide-band audio support, users can enjoy crystal-clear sound during calls and multimedia activities. This ensures that every word and tone is delivered with remarkable precision, making it an ideal choice for customer service representatives, sales professionals, and anyone engaged in important conversations.

The R-410A is equipped with a noise-canceling microphone, which significantly reduces background noise and enhances voice clarity. This is particularly useful in bustling office environments where distractions can compromise the quality of communication. The headset’s design also incorporates a flexible boom arm, allowing users to position the microphone optimally for enhanced audio capture.

Comfort is another key characteristic of the R-410A. The headset features lightweight materials and plush ear cushions that provide all-day comfort. Its adjustable headband ensures a secure and personalized fit, reducing fatigue during prolonged use. This ergonomics-focused design is essential for professionals who spend hours on calls, enabling them to maintain productivity without discomfort.

In terms of connectivity, the R-410A supports both analog and digital interfaces, making it versatile for various devices. It can easily connect to computers, desk phones, and mobile devices, providing users with the flexibility they need in a multi-device world. Additionally, its plug-and-play capability means users can get started quickly without complicated setup processes.

Durability and quality are hallmarks of Plantronics products, and the R-410A is no exception. Constructed from high-quality materials, this headset is built to withstand the rigors of daily use, ensuring a long lifespan and reliable performance.

In conclusion, the Plantronics R-410A is an excellent choice for professionals seeking a high-quality headset that combines superior audio performance, comfort, and versatility. With its advanced technologies and user-friendly features, it’s a powerful tool for enhancing productivity and communication in any workplace setting.