Nubira CDX Sedan L4-2.0L DOHC D-TEC MFI (1999)
High Pressure Safety Valve HVAC: Description and Operation
Pressure Relief Valve
The compressor is equipped with a pressure relief valve which is placed in the system as a safety factor. Under certain conditions, the refrigerant on the
discharge side may exceed the designed operating pressure. To prevent system damage, the valve is designed to open automatically at 3 171 to 4 137
kPa (460 to 600 psi) in an R-134a system. Conditions that might cause this valve to open, such as a defective pressure transducer or an inoperative
cooling fan, etc., should be corrected. The refrigerant oil and the refrigerant should be replaced, as necessary.
