Leak Testing Refrigerant System: Notes

Test for leaks whenever you suspect a refrigerant leak in the system. You should also test for leaks whenever you perform a service operation which results in disturbing the lines or the connections. Leaks are commonly found at the refrigerant fittings or at the connections. Leaks are commonly caused by the following problems:

• Improper torque
• Damaged O-ring seals
• Dirt or lint on the O-ring seals