We pressure test all coolers that require it with air and submerge the unit in clear water for 5 minutes to check for leaks. We also adhere to any customer requirements regarding test pressure or time taken. In house we have a heat rejection rig that allows us to test cores against other products to give a comparison of temperature drops.We can also use this to test your original cooler against ours size for size and give a data sheet to confirm inlet and outlet temperature. This set up also allows us to pump cold water at the same time so that we can test heat exchangers and charge coolers.


For the customer that requires more extensive testing such as pressure impulse, thermal expansion, vibration and corrosion tests this could be arranged at the NISSEN factory but would be subject to cost and time scales.