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| NG C820 0 AN D PGC1000 US ER MAN UA L | 2101510 MNAH
2.
On the Analyzer Operation screen, click
Hold
under Next Mode. When the device completes the
current cycle and enters hold, continue to the next step.
3.
When the device enters hold, select
Peak Find
from the Analyzer Operation screen. Select
Run
Manual PF
.
4.
Verify that peaks are correctly labeled and integrated. On Chromatogram 1, NC5 peak should
elute around 160 seconds. On Chromatogram 2, C2 peak should elute at approximately 220
seconds. If peaks are correctly labeled and integrated, return the device to operation, and
continue to the next step.
5.
Allow the device to cycle 3-4 times.
6.
Ensure that the Next Mode is set to
Hold
.
7.
When the device enters hold, verify that peaks are correctly labeled and integrated. If peaks
are correctly labeled and integrated, return the device to operation.
8.
If peaks are not correctly labeled and integrated, contact technical support for assistance.
11.2.25 Stream Un-normalized Total
This alarm indicates a change to the process stream un-normalized total of sufficient percentage to
activate the alarm. If the severity of the alarm is set to fault, the new stream data is not allowed to
update.
To troubleshoot stream un-normalized total:
1.
Verify that the alarm threshold is a valid configuration. Typically, the unnormalized total should
be within 50% (between 99.5 and 100.5).
2.
Compare the calibration blend concentrations to the calibration blend concentrations listed on
the Calibration Setup screen. If errors exist, make corrections and send the setup when
complete.
3.
On the Analyzer Operation screen, click
Hold
under Next Mode. When the device completes the
current cycle and enters hold, continue to the next step.
4.
When the device enters hold, select
Peak Find
. Select
Manual PF
.
5.
Verify that peaks are correctly labeled and integrated. If peaks are correctly labeled and
integrated, return the device to operation.
6.
Allow device to cycle 3-4 times.
7.
Calibrate the analyzer.
11.3 Alarm troubleshooting tests
11.3.1
Column vent pressure test
To troubleshoot column vent pressure:
1.
Attach a flowmeter to CV1.
2.
From the Analyzer Operation screen, click
Diagnostics
.
3.
Select the
Manual Operation
tab.
4.
Under Manual Control, open the stream 1 valve.
5.
When opened, the CV1 should measure between 3–12 SCCM. Close the valve when done
reading.
6.
If the CV1 measures within this range, continue to the next step. If CV1 does not measure
within the range, the test has failed. Return to troubleshooting alarm instructions.
7.
Attach the flowmeter to CV2.
8.
Open the stream 1 valve.
9.
When opened, CV2 should measure between 3–12 SCCM. Close the valve when done reading.
10. If CV2 does not measure within this range, the test has failed. Return to troubleshooting alarm
instructions.
11.3.2
Sample pressure test
To troubleshoot sample pressure:
1.
Place the device in Hold.
2.
From the Analyzer Operation screen, click
Diagnostics
.
3.
Select the
Manual Operation
tab and select
Monitor
.
4.
Read the sample pressure from the current reading.
5.
Under Manual Control, open the stream 1 valve or the stream reflecting alarm.
6.
Under Manual Control, close the sample shutoff valve.
7.
The sample pressure reading under Current should increase.
8.
Under Manual Control, open the sample shutoff valve.
9.
The sample pressure reading under Current should decrease rapidly.
