Trane Modu manual Refrigerant System

Owner Maintenance

Refrigerant System

Special Note on Refrigerant Emissions Follow theTrane recommended procedures on operation, maintenance, and service to ensure refrigerant conservation and emission reduction. Also, pay specific attention to the following:

•Whenever removing refrigerant from air conditioning or refrigerating equipment, recover for reuse, recycle, reprocess (reclaim), or properly destroy it.

•Always determine possible refrigerant recycling or reclaiming requirements before beginning recovery. Questions about recovered refrigerants and acceptable refrigerant quality standards are addressed in ARI Standard 700.

•Use approved containment vessels and safety standards. Comply with all

applicable transportation standards when shipping refrigerant containers.

•To minimize emissions while recovering refrigerant, use recycling equipment. Always attempt to use methods which will pull the lowest possible system vacuum while recovering and condensing refrigerant into containment.

•When leak checking with trace refrigerant and nitrogen, use HCFC22 (R22) rather than CFC12 (R12) or any other fully halogenated refrigerants. Be aware of any new leak test methods which eliminate refrigerant as a trace gas.

•When cleaning system components or parts, do not use CFC11 (R11) or CFC113 (R113). Refrigeration system clean up methods using filters and dryers are recommended. Do not use solvents which have ozone depletion

factors. Properly dispose of used materials.

•Take extra care to properly maintain all service equipment directly supporting refrigerant service work such as gauges, hoses, vacuum pumps, and recycling equipment.

•Stay aware of unit enhancements, conversion refrigerants, compatible parts, and manufacturer’s recommendations that will reduce refrigerant emissions and increase equipment operating efficiencies.

Follow specific manufacturer’s guidelines for conversion of existing systems.

•To assist in reducing power generation emissions, always attempt to improve equipment performance with improved maintenance and operations that will help conserve energy resources.

!WARNING

WARNING: Do not work in a closed area where refrigerant or nitrogen gases may be leaking. A sufficient quantity of vapors may be present and cause injury.

!WARNING

WARNING: Do not use oxygen, acetylene, or air in place of refrigerant and dry nitrogen for leak testing. A violent explosion may result causing injury or death.

!WARNING

WARNING: Always use a pressure regulator, valves, and gauges to control drum and line pressures when pressure testing the system. Excessive pressures may cause line ruptures, equipment damage, or an explosion which may result in injury or death.

!WARNING

WARNING: Do not exceed 200 psig when leak testing the system. Damage to the unit could result, or an explosion may occur causing injury or death

In the event of required system repair, leak test the liquid line, evaporator coil, and suction line at pressures dictated by local codes, and using the following guidelines.

1. Charge enough refrigerant and dry

102 SCXG-SVX01B-EN