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3
CI Troubleshooting
Pressure does not change when reagent flow
is changed
The reagent gas regulator is closed
Check and, if necessary, open the reagent gas regulator.
The reagent gas regulator is set to the wrong pressure
Set the reagent gas regulator to 20 to 25 psi (138 to 172 kPa) for methane or to
3 to 10 psi (21 to 69 kPa) for isobutane or ammonia.
The valve on the reagent gas bottle is closed
Check and, if necessary, open the valve on the reagent gas bottle.
The reagent gas supply is empty
Check and, if necessary, replace the reagent gas supply.
Reagent lines kinked, bent, pinched, or disconnected
Inspect the reagent lines and repair any defects. Ensure the reagent line is
connected to the rear of the flow module. Ensure the methane line is connected
to the Gas A inlet.
GC/MS interface clogged or damaged
Check for flow and repair or replace components as indicated.
7250 Accurate-Mass Q-TOF Troubleshooting and Maintenance Manual
57
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Table of Contents
Troubleshooting
