System Repair and Cleanup Procedure

1.After a mechanical failure or hermetic motor burnout, use Genetron ST-20 Flush to remove contaminants by flushing interconnecting piping as per the directions for Line Set Cleaning.

2.Remember to disconnect all electrical connections to the system and obtain and use safety goggles and nitrile gloves.

4. Do not attempt to push ST-20 Flush through compressor bodies.

3.It will be necessary to cut the refrigeration or air conditioning system at several points to isolate large components such as receivers and condensers which must be cleaned separately. It may be impractical to clean large components with ST-20 Flush. Inspect these components and consider mechanical cleaning if large deposits are discovered. Remove any solenoid or reversing valves from the piping. It may become necessary to modify procedures for line set cleaning to completely flush these components, use dry nitrogen to completely purge the component.

5.After cleaning and purging, assemble the refrigeration or AC system. Remember to purge the system with low pressure nitrogen during brazing operations.

6.Replace the liquid line filter drier and consider installing a suction filter.

7.If the original compressor is being re-installed, change the lubricant. Use only lubricants specified by the compressor manufacturer.

8.Pressurize the system with nitrogen and leak check as per AHRI and EPA guidelines.

9.Evacuate the system and charge the proper refrigerant as per the system manufacturer’s recommendations.

10.If a retrofit was accomplished during this repair, label the system indicating the refrigerant and lubricant used.

11.Properly dispose of contaminated Genetron ST-20 Flush.

Honeywell Genetron Refrigerants

101 Columbia Road

Morristown, NJ 07962-1053

Phone:1-800-631-8138

www.honeywell.com/genetron

Disclaimer

All statements, information and data given herein are believed to be accurate and reliable but are presented without guaranty, warranty or responsibility of any kind, expressed or implied. Statements or suggestions concerning possible use of our products are made without representation or warranty that any such use is free of patent infringement and are not recommendations to infringe any patent. The user should not assume that all safety measures are indicated, or that other measures may not be required.

Genetron is a registered trademark of Honeywell International Inc.

ST-20 is a trademark of Honeywell International Inc.

RX11-Flush is a trademark of Nu-Calgon.

	Printed in U.S.A.
G525-200	© 2009 Honeywell International Inc. All rights reserved.
G525-200

ST-20 specifications

The Honeywell ST-20 is an advanced temperature and humidity data logger designed for monitoring environmental conditions in various settings, including laboratories, warehouses, and production facilities. Known for its reliability and accuracy, the ST-20 combines cutting-edge technology with user-friendly features, making it an essential tool for professionals in need of real-time data collection.

One of the standout features of the Honeywell ST-20 is its dual-channel capability, which allows it to monitor both temperature and humidity simultaneously. This dual functionality makes it particularly useful in environments where both factors significantly impact product quality, such as in pharmaceuticals or food storage. The device is equipped with a wide temperature range, typically spanning from -40°C to +70°C, with exceptional accuracy levels, ensuring precise readings.

The ST-20 boasts a robust data storage capacity, capable of recording thousands of data points over extended periods. This extensive storage capacity enables users to continuously monitor conditions without the need for frequent data downloads. The built-in LCD screen provides real-time visibility into current conditions, making it easy for users to quickly assess environmental parameters at a glance.

The device employs Honeywell’s proprietary sensor technology, which enhances responsiveness and accuracy. Its sensors are designed to minimize drift and ensure reliable performance over time. Furthermore, the ST-20 features a user-friendly interface, allowing for easy configuration of measurement intervals and alarm thresholds through intuitive buttons. Users can set up alerts for both upper and lower limits, ensuring that corrective actions can be taken promptly when conditions deviate from specified ranges.

Wireless connectivity is another significant characteristic of the ST-20. It supports various communication protocols, allowing data to be transmitted seamlessly to cloud-based platforms or local servers for further analysis. This feature facilitates real-time monitoring and enables users to access data remotely, providing flexibility and enhancing operational efficiency.

Another notable aspect of the Honeywell ST-20 is its compact, rugged design. Built to withstand challenging environments, the device is resistant to dust and water ingress, making it suitable for both indoor and outdoor applications. The long battery life ensures extended operation without frequent interruptions, further enhancing its practicality.

Overall, the Honeywell ST-20 is a sophisticated yet accessible data logger that meets the demands of various industries by providing accurate and reliable temperature and humidity monitoring. With its advanced features and user-friendly design, it is an indispensable tool for maintaining optimal environmental conditions and ensuring product integrity.

Honeywell ST-20 manual System Repair and Cleanup Procedure, Honeywell Genetron Refrigerants

Models: ST-20