Agilent Technologies 7250 Troubleshooting And Maintenance Manual page 87

5 CI Maintenance
3 Close the ballast valve by aligning the 0s. Leaving the ballast valve open all
Always purge the flow module with methane after flowing ammonia. The use
C AU T I O N
of ammonia reagent gas also requires that the foreline pump oil be replaced
every two to three months instead of the usual six months.
7250 Accurate-Mass Q-TOF Troubleshooting and Maintenance Manual
the time will result in loss of pump oil and damage to the pump.
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