5 Maintenance
Replacing the nitrogen gas filters
105 Agilent Triple Quadrupole LC/MS System User Guide
Replacing the nitrogen gas filters
Schedule
Yearly, or when flagged by EMF.
Equipment List
• 2 1/2-inch OD Mounting Clip for Big Universal Trafps (2/pk) - Part number
UMC-5-2
• RMSN—4 1/4-inch Nitrogen
Steps
Before installing the trap, make sure the system is free of leaks and the system is
generally in good working order.
• Maximum operating pressure is 250 PSIG.
• Maximum operating temperature is 100 °C.
• Maximum flow rate is 8 liters per minute.
If you are using stainless steel tubing, please order the purifier with stainless
steel fittings RMSH-2-SS or RMSH-4-SS. Using brass fittings with stainless
steel tubing increases the risk of cross-threading.
1 Shut down your LC/MC or reduce the GC heated zone temperatures.
2 Set the gas source supply pressure to 10–15 psi and maintain flow in the gas
source line before disconnecting it from the inlet of the old trap.
3 Remove the protective nut and plug from the INLET end of the new trap. DO
NOT open the plug on the OUTLET end.
4 Immediately attach the new trap to the gas source tubing using one of the
included ferrule sets.
Failure to connect the trap immediately may cause contamination of the
adsorbents inside. Reduced adsorption capacity will contribute to elevated
levels of contaminants observed by the detector. This may result in the need
for additional purge time.
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