Maintenance and Troubleshooting
|
6-19
“P/N” refers to Part Number.
To clean and replace parts in the Column Block (see Figure 6-4):
Hazardous Locations
Before proceeding, test the area around the analyzer for explosive
gases and proceed only when the area is found to be safe.
Do not remove the cover of the Explosion-Proof Digital Communica-
tions Port on the front of the Lower Enclosure, do not connect a serial
cable to the Communications Port, do not open the Upper/Lower En-
closures, and do not power up/down the analyzer or computer if there
is an explosive gas atmosphere present.
1. Connect a serial cable between the computer and the analyzer’s Com-
munications Port. Using the Configurator Software, change the
Flow
Control
setting to ‘
3
’ (
zero
). Click
OK
then
Apply
. Do not save the
changes to EEPROM.
2. If the analyzer uses
Measured
Pressure Compensation (optional),
change it to
Fixed
mode so that a “
f: Sample gas pressure too low
”
alarm does not occur. To do this, view the
Cell/Misc Parameters
dialog
box and enter a value in the
Default Cell Pres
(pressure compensa-
tion) field that is the same as, or approximately, the Measuring Cell
pressure. Refer to “Cell/Miscellaneous (Compensation) Parameters” in
Chapter 4.
Close the sample inlet valve. Backpurge the analyzer sample system
with Zero gas for 2–3 minutes.
3. Change the
Flow Control
to ‘
4
’ (
shut-in/shut-off
). Click
Apply
(next to
Flow Control
) and then click
OK
.
Bleed down the sample system to atmospheric pressure (check gauge).
Close the valve on the Vent Line (or cap the Vent outlet).
To avoid tearing the Membrane Filters in the Filterblock, always bleed
down the sample system pressure on the downstream (outlet) side of
the Filterblock. Pressure differentials of more than 210 KPA (30 PSI)
from the inlet side to the outlet side can tear the Filters and they will
have to be replaced.
NOTE
!
CAUTION
!
WARNING
Setup (tab)
Gas Calibration<<Flow
Control>>
Setup (tab)
Cell/Misc
Содержание 933S
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Страница 52: ...3 6 Model 933S UV Analyzer Figure 3 1 Analyzer backpan dimensions European...
Страница 91: ...Installation and Start Up 3 45 Figure 3 24 Column Profile...
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Страница 187: ...Maintenance and Troubleshooting 6 11 Figure 6 2 Optical Bench Assembly with Standard Range Measuring Cell...
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Страница 191: ...Maintenance and Troubleshooting 6 15 Figure 6 3 2 Low Range White Cell 81 2 cm P N 100 1780 1A...
Страница 197: ...Maintenance and Troubleshooting 6 21 Figure 6 4 Column Block assembly...
Страница 229: ...Maintenance and Troubleshooting 6 53 Figure 6 14 Optical Bench Chopper Assembly Maintenance diagram 100 2313 1A...
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Страница 268: ...A 4 Model 933S UV Analyzer Sample Flow Diagram Plumbing Schematic North American Style WX 933NA 2...
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Страница 274: ...A 10 Model 933S UV Analyzer RS 232 Communications Cable Connections 300 9480...
Страница 279: ...Appendix A Drawings A 15 Optical Bench Board P N 100 1662...
Страница 280: ...A 16 Model 933S UV Analyzer PMT Buffer Board 100 0140...
Страница 285: ...Appendix A Drawings A 21 Inlet and Vent Flame Arrestor Locations Environmental Purge Option 100 1783 1A...
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