Thermo Scientific EASY-nLC 1200 Troubleshooting And Maintenance Manual page 191

Thermo Scientific
❖ To empty pump A or B to waste
1. Check the position of the pump valve on the Home > Overview page.
2. Do one of the following:
• To empty pump A or B directly to waste, make sure that its valve is in position 1–2.
• To empty pump A or B to waste by way of valve W, place the pump valve in
position 1–6 and valve W in position 1–6.
Valve Position
A or B 1–2
1–6
S 1–2
1–6
W 1–2
1–6
3. Press the pump icon for the pump you want to control.
The Pump dialog box opens (see
4. In the flow rate box, enter the flow rate: 0.01 to 300 µL/min.
When valve A or B is in position 1–6, the maximum system pressure limit constrains the
maximum flow rate.
5. In the volume box, enter the volume that you want the pump to empty to waste.
6. Press Start.
The pump empties until it pumps the requested volume or reaches the empty position,
whichever occurs first.
Using the Direct Controls for Troubleshooting and Maintenance
Solvent flow
Empties to the waste beaker.
Passes through valve S and into the Column Out line.
Bypasses the sample loop.
Passes through the sample loop.
Passes through the installed columns.
Exits the Column Out line to waste for a one column
setup or passes through the precolumn and then exits the
system to waste for a two-column setup.
Figure 139 on page 167).
EASY-nLC 1200 Troubleshooting & Maintenance Guide
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Troubleshooting
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