Complete the following steps to pressurize the camera before you install it.
Set the gauge or regulator from 10 to 20 psi (0.7 to 1.4 bar).
Place the air chuck on the tank valve and begin filling until the pressure relief valve opens.
Open the relief valve. Drain all air from the housing and repeat three times to remove all moisture.
After purging check the housing pressure. It should be around 5 psi (0.34 bar).