Teledyne 6700-C Total Organic Carbon Analyzer (Hi-Temp Combustion version) - Manual (Page 52)

Maintenance Model 6700C TOC
Teledyne Analytical Instruments 52
Procedure:
1. Shut off Power to Instruments.
2. Shut off all gas to analyzer and bleed system for “0” pressure.
3. Disconnect fittings/tubing.
4. Loosen screws holding Module in-place.
5. Remove Module.
6. Recalibrate analyzer after re-installation of exchange Module.
Note: Mass Flow Controllers of different manufacture may be
used. Include the manufacturer, make and model
information when communicating with TAI Customer
Service.
5.3.8 Metering Valve
If no O
2
/air flow to the Sparger is observed (no bubbles), check for
tubing and fitting leaks or restrictions. Adjust the Metering Valve being
careful to return to previous indicated bubble rate. If flow cannot be
restored, replace the Metering Valve according to the procedure given
below. Refer to Figure 5-7.
Figure 5-7: Metering Valve