General Maintenance 4
Troubleshooting and Maintenance Manual 97
To check and add foreline pump oil
This procedure describes the standard foreline pump (Pfeiffer Duo 2.5). The
higher flow pump (Edwards RV5) is similar.
Materials needed
• Foreline pump oil (6040-0834)
• Funnel (9301-6461)
• Hex key, 5-mm, to remove drain plug (8710-1838)
• Screwdriver, flat-blade, to remove top fill cap
Procedure
1 Examine the oil level window (Figure 9).
Note the two lines on the pump left of the window. The oil level should be
between the lines. The foreline pump oil should be almost clear. If the oil
level is near or below the lower line, follow steps 2 through 6 to add
foreline pump oil.
If your MS is nearing its scheduled time for replacement of the foreline pump
oil, replace the oil instead of adding oil. If the oil is dark or cloudy, replace it.
See “To drain/refill the foreline pump” on page 99 for instructions on
replacing the foreline pump oil.
2 Vent the MS. See the Agilent 7000 Series Triple Quad GC/MS Operation
Manual.
3 Remove the foreline pump fill cap.
The foreline pump can cause burns if touched when operating. An optional safety
shield will prevent the user from touching it.
Never add oil while the foreline pump is on.
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