3. Unscrew and remove the nitrogen exhaust trap from its cap and associated fittings.
Warning: To avoid spreading contamination with biologically hazardous, toxic, and
corrosive materials, dispose of all waste materials according to local environmental
regulations.
4. Dispose of the waste liquid in accordance with local environmental regulations.
5. Fit and fully tighten the trap onto its cap.
6. Secure the trap in the upright position.
7. Refit the source enclosure (see Fitting the source enclosure to the instrument).
8. In the software, start the LC flow.
3.12 Emptying the liquid-trap bottle
Note: This section applies to the Performance QDa detector only. The Standard instrument uses
a diaphragm pump, which does not require oil.
Inspect the VACUUBRAND RE 6 rotary vane pump daily before using it, and empty the liquid-trap
bottle. For details about performing this task, see the VACUUBRAND Technology for Vacuum
Systems Instructions for use (VACUUBRAND manual number 999139/ 11/20/2013).
3.13
Maintaining the rotary backing pump’s oil
Note: This section applies to the Performance QDa detector only. The Standard instrument uses
a diaphragm pump, which does not require oil.
Replace the backing pump’s oil when any of these conditions apply:
• The oil level is low.
Tip: To check the oil level, view it through the sight glass on the pump’s rear panel.
• The oil in the pump appears darker than new oil, is odorous, or is visibly contaminated.
• The oil has been in use for more than one year.
Required materials
• Chemical-resistant, powder-free gloves
• Tray on which to place the pump
• Container to catch used oil
• Suitable pump oil
June 15, 2017, 715003956 Rev. F
Page 51
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