Warning: To avoid personal contamination with biologically hazardous or toxic
compounds, wear clean, chemical-resistant, powder-free gloves when performing this
procedure.
2. 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.
3. Dispose of the waste liquid in accordance with local environmental regulations.
4. Fit and fully tighten the trap onto its cap.
5. Secure the trap in the upright position.
6. In the software, start the LC flow.
3.17 Maintaining the rotary backing pump's oil
Warning: To avoid spreading contamination with biologically hazardous, toxic, and corrosive
materials, dispose of all waste materials according to local environmental regulations.
Refill the backing pump’s oil when the oil level is low.
Tip: To inspect the oil level, view it through the sight glass on the pump’s rear panel.
Replace the backing pump’s oil when either of these conditions apply:
• 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 tools and materials
• Chemical-resistant, powder-free gloves
• Tray on which to place the pump
• Container to catch used oil
• Suitable pump oil
Warning: To avoid personal contamination with biologically hazardous or toxic compounds,
wear clean, chemical-resistant, powder-free gloves when performing this procedure.
August 20, 2021, 715005003 Ver. 04 (Previously released as Revision C)
Page 61
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