Total Organic Carbon Analyzer
Maintenance
Teledyne Analytical Instruments
59
Figure 5-10: Removing the UV Power Supply
5.3.9 Mass Flow Controller (P/N ST18001A)
If proper flow is not detected by the computer, an alarm will be
activated and displayed. The fault may be in the O
2
/Air supply (check
for 20 psi and flow of the supply by disconnecting the input). If supply
flow exists, fault may be in the tubing. Disconnect output side of mass
flow controller and check for flow. If no flow exists, exchange mass
flow controller as described below. See Figure 5-11. If flow still does
not exist, check rest of tubing for restrictions, leaks, etc.
To remove the mass flow controller:
1.
Shut off Power to Instruments.
2.
Shut off all gas to analyzer and bleed system for “O”
pressure
.
3.
Disconnect fittings/tubing.
4.
Loosen screws holding Module in-place.
5.
Remove Module
6.
Recalibrate analyzer after re-installation of exchange
Module.
Summary of Contents for 6750
Page 16: ...Introduction Model 6750 Teledyne Analytical Instruments 4 ...
Page 32: ...Theory of Operation Model 6750 Teledyne Analytical Instruments 20 ...
Page 40: ...Installation Model 6750 Teledyne Analytical Instruments 28 ...
Page 92: ...Appendix Model 6750 Teledyne Analytical Instruments 80 ...