12
Do not remove the filter. This may damage the gas sensors.
3.
Connect N2, Air and CO2 supply to the corresponding push to fit connectors on the rear panel of CO2-O2-UNIT-
BL [0-10; 0-1] by using TUBE-A (see Figure 11 a). Set N2, Air and CO2 pressure at
1.4 barg
(20.3 psig).
Tip
►
Make sure to push the tubes all the way into the connectors thus avoiding any gas leak.
Note
►
Do not exceed 5 barg (72.5 psig) for CO2 and N2 supply.
To remove tubing from the connectors, push the red rubber ring while pulling the tubing (see Figure 11 b).
Tip
►
If the tubing does not come out easily, do not force it, simply make sure the red ring is properly pushed.
a
b
Figure 11. How to connect (a) and disconnect (b) tubings from push to fit connectors.
Before disconnecting any of tubing connected to CO2-O2-UNIT-BL [0-10; 0-1], make sure there is
no residual pressure by adjusting the pressure gauges upstream of the system and the tanks.
.
4.
To install the O2 Sensor follow the instructions below:
•
Carefully open the bag of the O2 Sensor using a pair of scissors or a knife. Make sure that there is no
sign of any liquid in the bag, if so,
do not proceed, you need a new sensor. Be careful that you don’t
poke anything such as a fingernail through the membrane.
•
Remove the plug or other device that acts as a shorting clip. This may be found on the connection
plate on the back of the O2 Sensor.
•
Slide the O2-Sensor into the sensor unit (gold plated contact side of sensor should be facing up
touching the sensor unit contacts. The membrane side is covered by a convex gold-plated mesh). Be
careful not to touch the membrane while doing this - if the membrane is punctured the O2 Sensor
must be replaced (see image 1 in Figure 12)
•
Verify that the sealing O ring is in place in the cell cap groove (see image 2 in Figure 12)
