If leakage is detected

• Remedy the cause of the leak
• Vacuum pump according to Vacuum pumping
• Add fluorescent tracing agent with the refrigerant according to Filling with fluorescent tracing agent with the refrigerant .

Or: 

• Fill with refrigerant according to Refrigerant, filling
• Leak trace according to Leak tracing with an electronic leak tracer using refrigerant as a tracing agent .

Or: 

• Leak trace according to Leak tracing, fluorescent tracing agent / UV lamp .