A/C Refrigerant System (R-134a), Leak Testing

A/C refrigerant system (R-134a), leak testing
- Use halogen leak detector Hitec HI400A-TEL or equivalent to check for refrigerant leaks.
- Refrigerant gas dissipates very quickly. Avoid drafty or windy areas when checking for leaks.
- Some refrigerant leaks are apparent by refrigerant oil deposits on or near leak location. Confirm by using leak detector.
- If the refrigerant system is discharged (empty), charge system with approx. 100 g (3.5 oz) of refrigerant in order to check for leaks.
- Check refrigerant system for leaks following leak detector manufacturer's instructions






- Check for refrigerant leaks by passing detector probe under suspected leaking components.


NOTE: See leak detector manufacturer instructions.