Teledyne 6750 10:Removing the UV Power Supply, Mass Flow Controller P/N ST18001A

Total Organic Carbon Analyzer Maintenance

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 O2/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.

Teledyne Analytical Instruments 59