Teledyne 6600 - Manual (Page 133)

Part III: 1-43
Oil in Water Part III
Teledyne Analytical Instruments
Shine a flashlight through the cell.
For G.P. Systems, open control/analysis unit and check optical train for
proper beam alignment from source end to detector input.
Remove the cell assembly. Inspect the cell as described in E.P. Systems.
Disassemble the cell in a dry room where needed and clean the cell with hot
water and detergent.
7.7 Sample System Maintenance
The sample system can be quickly cleaned. All components are connected
to the equipment panel by Swaglok type fitting. Remove all components and
clean with hot water and detergent. It is recommended to renew, rather than
clean the piping which makes up the sample flowpath.
7.8 Zero Filter Replacement
The system is equipped with a polypropylene element when the range is
10 ppm or less. A new filter releases small amounts of signal producing
chemicals, which produce an unacceptable zero reading for this narrow range.
The poly propylene filter(s) element must be cleaned and rinsed of contaminats
before use. Wash thoroughly in dtergent, hot eater, then rinse capiously with
very clean dimeneralized or tap water severa times before re-assembly and use.
Several manual auto-zero’s may be required before a stable reproducible zero
is obtained. The only correct gasket material is Viton 4.
Clean througly or replace the filter element:
1. Stop the sample flow.
2. Open the zero system vent valve. This will vent most of the zero
system water.
3. With an adjustable wrench, open the filter housing.
4. Replace the polypropylene filter element. Clean the element when it not
appear very dirty and reinstall or replace with a spare unit. For cleaning
procedure see Section 7.8.
5. After installation, with the proper care that the gaskets are in place and
the filter housing properly tightened, start the sample flow. Flush the new filter
element by filling and draining the filter housing with sample several times, by
means of the safety vent valves, V4 and V3.