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4. Connect your manifold center hose to the regulator and your high-pressure hose
to the machine. You will require a 1/4
” to 5/16” hose adaptor to do this.
5. Open the main high pressure valve of the tank and ensure that the regulator is
not leaking. Begin closing the output pressure of the regulator to begin delivering
nitrogen to the hoses, and stop at 75 psig.
6. Slowly open the high pressure of the manifold and slowly fill the lines to 75 psig.
Mark your gauge cover with a pencil indicating the leading edge of the gauge
needle, turn off the main valve of the tank and wait 10 minutes.
7. If the needle has not indicated a pressure drop, open your main valve and slowly
open the high pressure to increase the pressure to 150 psig. Shut off the main
valve and mark the needle position with your pencil and hold for 10 minutes.
8. If there is no pressure drop, open the main valve and increase to 400 psig. Close
the main valve and mark the manifold pressure gauge with a pencil.
9. If the pressure has not dropped after 35 minutes, slowly release the nitrogen to
atmosphere and go to the evacuation procedure.
10. If there has been a pressure drop, use an approved leak detection sap solution to
find the leak. Do not shake the solution before use! This will introduce bubbles to
the solution and make leak detection impossible.
11. Repair the leak and repeat this procedure until leak(s) have been eliminated.
