MODEL 1000 SEP 2005
MAINTENANCE
5-23
(6) Plug the Sample Vent (labeled "SV") vent line.
(7) Pressurize the calibration gas line to 50 psig.
Calibration gas line pressure of 50 psig is for leak check and test purposes only. For normal
operation, the calibration gas line pressure is maintained at 20-30 psig.
(a) Shut the calibration gas bottle valve.
(b) Observe the pressure on the high-side regulator gauge of the calibration gas bottle.
Because the "SV" vent line is plugged, the pressure should not decrease during a
period of 2-3 minutes.
(8) This completes the calibration gas line leak check. Next, leak check the sample gas lines,
according to the steps that follow.
(9) Plug the "SV" vent line (it may already be plugged if you performed steps (5) through (7),
above, to leak-check the calibration gas line).
(10) Pressurize the sample gas line to 50 psig or a known pressure.
Sample gas line pressure of 50 psig is for leak check and test purposes only. For normal
operation, sample gas line pressure is maintained at 20-30 psig.
(a) Shut off the sample gas.
(b) Observe the pressure on any gauge that indicates pressure between the closed sample
gas block valve and the plugged "SV" vent line. Because the line is plugged, the
pressure should not decrease during a period of 2-3 minutes.
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