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

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.

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G525-200	© 2009 Honeywell International Inc. All rights reserved.