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Part III: 1-47
Oil in Water Part III
Teledyne Analytical Instruments
8.2.2 Sample Pump Failure
Refer to Pump manufacturers recommendations or maintenance.
Repair the above conditions by replacement of the defective component.
Pump trouble reveals itself usually by the malfunction of other sample
system components.
1. Assume the pump is primed with water, if not prime and design
inlet, go as always to have a suitable head for ease of priming the pump.
2. Turn on the pump and observe that water flows out of the tube.
3. Turn off the pump. The flow must come immediately to a stop.
A slight drip of water is permissible but not more than approximately 1 droplet
per 5 seconds.
4. If the drip rate is unacceptable, check for leaks or faulty connec-
tions. Take extra care in installing it.
8.3 Zero Drift Problems
1. When the recorder shows a persistent drift in one direction during the
sample cycle, the drift could be caused by an exceptional long upset in the water
treatment facility; this can be discriminated by operating the system temporarily
with air in the sample cell. Make sure that the output of the I to E Converter
displays peak heights not exceeding 10 volts.
2. Check the quality of both F1, F2, and F3, Zero filters; replace or clean
as necessary.