13
the black or red rubber ring while pulling the tubing. If tubing does not easily come out, do not force it, simply
make sure the black ring is properly pushed.
Figure 10. Avoid gas leak: strongly push the tube into the Push-in to-Fit connector
Before disconnecting any of the polyurethane tubing connected to tanks or to the CO2 Controller,
make sure there is no residual pressure by adjusting the pressure gauges upstream of the system
and the tank manometer.
4.
Figure 11 shows the connections between the CO
2
and Air tanks and the respective connectors on the rear
panel of the CO2-UNIT-BL (see pointer 3 in Figure 1).
Figure 11. CO
2
and Air Tanks connections to the back panel of the CO2 Controller
Tip
►
If you have ordered OKO-AIR-PUMP-BL, you have to connect TUBE B (see par.6 Figure 2) between the
Air Pump and the connector labeled “Air” on the rear panel of the CO2 Controller