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TELEDYNE API
Technical Manual - M100E UV Fluorescence SO2 Analyzer Instrument Maintenance
213
10.3.2. CHANGING THE IZS PERMEATION TUBE
1. Turn off the analyzer, unplug the power cord and remove the cover.
2. Locate the IZS oven in the rear left of the analyzer.
3. Remove the top layer of insulation if necessary.
4. Unscrew the black aluminum cover of the IZS oven (3 screws) using a medium Phillips-head screw driver.
Leave the fittings and tubing connected to the cover.
5. Remove the old permeation tube if necessary and replace it with the new tube. Ensure that the tube is
placed into the larger of two holes and that the open permeation end of the tube (Teflon) is facing up.
6. Re-attach the cover with three screws and ensure that the sealing O-ring is properly in place and that the
three screws are tightened evenly.
7. Replace the analyzer cover, plug the power cord back in and turn on the analyzer.
8. Carry out an IZS span check to see if the new permeation device works properly. The permeation rate may
need several days to stabilize.
WARNING
DO NOT LEAVE INSTRUMENT TURNED OFF FOR MORE THAN 8 HOURS WITHOUT
REMOVING THE PERMEATION TUBE. DO NOT SHIP THE INSTRUMENT WITHOUT
REMOVING THE PERMEATION TUBE. THE TUBE CONTINUES TO EMIT GAS, EVEN AT
ROOM TEMPERATURE AND WILL CONTAMINATE THE ENTIRE INSTRUMENT.
10.3.3. CHANGING THE EXTERNAL ZERO AIR SCRUBBER
The chemicals in the external scrubber need to be replaced periodically according to Table 10-1 or as needed.
This procedure can be carried out while the instrument is running. Ensure that the analyzer is not in either the
ZERO or SPAN calibration modes.
1. Locate the scrubber on the outside rear panel.
2. Remove the old scrubber by disconnecting the 1/4” plastic tubing from the particle filter using 9/16” and 1/2"
wrenches.
3. Remove the particle filter from the cartridge using 9/16” wrenches.
4. Unscrew the top of the scrubber canister and discard charcoal contents. Ensure to abide to local laws about
discarding these chemicals. The rebuild kit (listed in Appendix B) comes with a Material and Safety Data
Sheet, which contains more information on these chemicals.
5. Refill the scrubber with charcoal at the bottom.
6. Tighten the cap on the scrubber - hand-tight only.
7. Replace the DFU filter, if required, with a new unit and discard the old.
8. Replace the scrubber assembly into its clips on the rear panel.
9. Reconnect the plastic tubing to the fitting of the particle filter.
10. Adjust the scrubber cartridge such that it does not protrude above or below the analyzer in case the
instrument is mounted in a rack. If necessary, squeeze the clips for a tighter grip on the cartridge.
04515F DCN6048