System With A Lost Charge
If the system has lost all charge due to a leak, perform the following:
- Evacuate the system, as outlined in this section.
- Charge the system with approximately 0.453 kg (1 pound) of refrigerant.
- Check for leaks.
- Discharge the system, as outlined in this section.
WARNINGReplacement filter-drier units must be sealed while in storage. The drier used in these units will saturate water quickly upon exposure to the atmosphere. When installing a drier, have all tools and supplies ready for quick assembly to avoid keeping the system open any longer than necessary.
- Replace receiver drier.
- Evacuate and charge system.
System With A Low Charge
If the system has not lost all of its refrigerant charge; locate and repair all leaks. If it is necessary to increase the system pressure to find the leak (because of an especially low charge) add refrigerant.
If it is possible to repair the leak without discharging the refrigerant system, use the procedure for correcting low refrigerant level.