Particulate Systems HPVA Series, Operator'S Manual, Page: 85 / 124

HPVA Series Operator’s Manual Troubleshooting
Mar 2011 6-3
What Happened Why What to Do
Pressure cycling
(continued)
Gas is venting out of the
manifold too fast. Adjust the Vent valve on the
instrument’s front panel.
Target pressure not
reached Gas level in tank is too low. Replace the gas bottle.
Refer to Connecting a
Replacement Gas Bottle, page
6-8.
The pressure limit entered in
the Instrument Configuration
window does not match the
pressure set on the regulator.
For example, if you are using
CO
2
or methane, the pressure
limit must be set below the
maximum output of the
regulator.
Enter the correct pressure
limit.
Refer to Resetting the Pressure
Limit, page 6-4 .
Ambient pressure not
reached Slope set incorrectly in the
Hardware Configuration
window. Enter the correct slope.


Refer to Entering the Slope,
page 6-5 .
Degas or analysis not
progressing as it
should O-rings in ports are missing,
worn, or damaged. Replace the port O-ring.
Refer to Replacing Degas and
Analysis Port O-Rings, page
6-6 .