Ensure that the regulator has been mounted with the vent
pointing downward so that water or debris cannot gather in the
regulator. Place one of the two cylinders in “primary” by
switching the black changeover lever in the direction of the
selected cylinder. The arrow on the lever will denote the
“primary” side. Open both cylinder valves slowly. The indicator
on the top of the regulator will turn green.
The “primary” side of the regulator will continue to supply gas as
long as sufficient gas is present in the “primary” cylinder. When the pressure in the cylinder drops below a designated pressure, the
“reserve” side will open and continue to primary gas to the
regulator. At the time that the “primary” cylinder becomes
exhausted, the indicator on the changeover lever will turn red
indicating a cylinder change can be made.
Prior to removing the empty cylinder, position the black
changeover lever so that it points to the alternate cylinder that is
now supplying the regulator. Close the valve on the empty
cylinder and remove. After the empty cylinder is refilled and reconnected, slowly open the cylinder valve. The new cylinder is
now the reserve cylinder. The indicator at the top of the regulator
will turn green.