Agilent Technologies 8860 User Manual page 84

5 Maintenance and Troubleshooting
Restriction and leak check
5 Turn on the cylinder valve and set the test gas cylinder regulator pressure to
6 Remove the dead plug.
7 Run the
8 Measure and record the flow in GC GSV sample out tubing.
9 If you hear obvious gas flow during the loading process, it proves that the
10 Repeat
11 Choose any position and run the
12 Check if there is a flow from purge gas fitting on the back of the Selector by
84
g If there is a pressure loss greater than 7 kPa (1 psi) in any of the two
observe steps above, there is a leak within the selector, contact Agilent for
further support.
415 kPa (60 psi).
Sampling mode
(0.5 to 1 minute is suggested).
system is leaking. Contact Agilent for further support.
step 3 to step 9
GC GSV sample out tubing.
• If only one or several of positions has low sample out flow, while the flow of
others is normal (normally >80 mL/min), clean or change the filters
corresponding to these positions, and run the
Maintenance tab. See
and Sweep mode
• If the sample out flow is basically the same in all positions and all are very
low, contact Agilent for further support.
using a flow meter. If so, contact Agilent for further support.
Agilent Gas Sample Selector for 8860 and 8890 User Manual
in the Maintenance tab for the corresponding position
for each position and compare the flow rate get in the
Replace gas filter for cylinder version
on page 74.
Sampling mode
Sweep mode in the
on page 66,
in the Maintenance tab.