24 • 35-3001A-13-XX CO
2
/CO Sample-Draw Detector
Removing the Particle Filter’s Tubing Stub, if Necessary
A short tubing stub comes factory installed in the particle filter. It is used for connecting the particle filter to the
inlet fitting. If you have installed the particle filter and no longer want it installed, you will need to remove the
particle filter’s tubing stub from the inlet fitting and replace it with tubing.
CAUTION:
Do not pull the tubing stub downward to remove it.
1. Remove the particle filter from its tubing stub.
2. Unscrew the outside inlet fitting tube nut from the fitting body. The tubing stub should come out with the
tube nut. Be careful not to lose the O-ring that may come out with the tubing stub. If you do lose the O-ring
or if it is damaged, see “Parts List” on page 28 for the spare part number.
3. Push the tubing stub up and out of the front ferrule being careful not to lose the ferrule set. If you do lose the
ferrule set or if it is damaged, see “Parts List” on page 28 for the spare part numbers.
4. Push the new tubing up through the inlet fitting tube nut and replace the ferrule set and the O-ring, if it came
out, in the orientation shown in Figure 7.
5. Screw the inlet fitting tube nut back onto the fitting body. See “Connecting the Sample Lines to the Sample-
Draw Detector” on page 14 for instructions to install a new piece of tubing into the fitting.
Figure 7: Inlet Fitting with Tubing Stub
1/4" Tube
Back Ferrule
Front Ferrule
Fitting Body
Outside of Case
1/4" Tube
O-ring
Tube Nut
Inside of Case
