
Teledyne API Model 100AH SO2 Analyzer Instruction Manual, 02417, Rev. D
9.3 Replacing the Pump Scrubber
The entire cartridge can be replaced, or just the charcoal inside of the cartridge. To replace the scrubber materials:
1.Disconnect the scrubber from the clip of bracket and remove the fitting that holds the DFU filter. While removing the cartridge, check the DFU filter for contamination and dirt. Replace it if necessary.
2.Unscrew the top, remove the felt pad and empty the contents.
3.Inspect the upper and lower felt pads for signs of plugging, replace if necessary.
4.Replace with charcoal.
5.
6.Leak check the assembly, then
9.4Cleaning Orifice and Orifice Filter
The sample flow across the internal pneumatic system is fixed by the critical flow control orifice and has no adjustment.
1.Turn off the instrument power.
2.Remove the elbow fitting toward rear panel only from the flow control module.
3.With a toothpick or paper clip, remove the spring, filter,
4.Discard the filter.
5.Check the orifice by looking at it toward a light to see that the orifice itself is open. If it is not open, try cleaning the orifice with a strand of fine wire or immersing in a solvent such as methyl alcohol, or both.
6.If the orifice will not open, replace it.
7.Replace
8.To replace the orifice, start with the
9.Retape the fittings with TFE tape, install and tighten.
10.Leak check.