How is the working pressure set for the JBL PROFLORA CO2 REGULATOR ADVANCED and PROFESSIONAL pressure reducers?
When using disposable cylinders, the adjustment knob for the working pressure is also the valve for opening your CO2 cylinder. When using refillable cylinders, you have an additional cylinder valve, open this first. The cylinder pressure now shows you a pressure of approx. 60 bar. This means that the cylinder is sufficiently filled and you can continue with the next steps.
Now turn the adjustment knob for the working pressure, the large screw knob between the two pressure gauges, and observe the right-hand pressure gauge for the working pressure. The green range up to 1.2 bar is marked. Open it so far that the desired working pressure is reached. The adjustment of the screw allows the opening up to approx. 1.2 bar.
If you are using a solenoid valve, now establish the power supply so that the CO2 can pass. As a last step, open the needle valve to adjust the amount of CO2 (bubble count) and set a bubble count of approximately 10 - 15 bubbles on the bubble counter. After the run-in period of 24 hours, set the number of bubbles required for your aquarium.