Teledyne 6200T - Sulfides Analyzer - Manual (Page 230)

Maintenance Model 6200T Total Sulfur Analyzer
230 Teledyne Analytical Instruments
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 by local laws for 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.
11.3.4. Changing the Critical Flow Orifice
A critical flow orifice, located on the exhaust manifold maintains the proper flow rate of
gas through the 6200T analyzer. Refer to section 10.3.2.1 for a detailed description of
its functionality and location. Despite the fact this device is protected by sintered
stainless steel filters, it can, on occasion, clog, particularly if the instrument is operated
without a sample filter or in an environment with very fine, sub-micron particle-size
dust.
1. Turn off power to the instrument and vacuum pump.
2. Locate the critical flow orifice on the pressure sensor assembly (called out in
Figure 11-2).
3. Disconnect the pneumatic line.
4. Unscrew the NPT fitting.