Teledyne 6200A - Sulfides analyzer - Manual (Page 166)

TAI Model 6200A SO
2
Analyzer Operator Manual, 02164, Rev. G
9.2 Performance Problems
When the response from a span check is outside the control limits, the cause for the drift should be
determined, and corrective action should be taken. Some of the causes for drift are listed below:
NOTE
Before starting troubleshooting, it has been our experience that about 50%
of all analyzer performance problems are sooner or later traced to leaks.
1. Fluctuations in flow. Such as leaks or plugged orifices.
Lack of preventive maintenance.
Change in zero air source.
A. Air containing SO
2
leaking into zero air line.
B. Saturation of charcoal scrubber.
C. Cracked DFU filter.
4. Change in span gas concentration.
A. Zero air or ambient air leaking into span gas line.
B. Permeation tube or cal gas tank exhaustion.
C. Dirty particulate filter.
9.2.1 AC Power Check
1. Check that power is present at main line power input. Verify that correct voltage and
frequency is present.
2. Check that the unit is plugged into a good socket. Analyzer must have 3-wire safety power
input.
3. Check circuit breaker. Circuit breaker is part of the front panel power switch. It is set each
time the instrument power is turned on. If there is an internal short causing a trip, the switch
will automatically return to the OFF position when an attempt is made to turn it on.
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