User manual
1260 Nanoflow Pump User Manual 145
Maintenance
9
Exchanging the Solvent Selection Valve
1 Disconnect the solvent tubes and the active inlet valve connection tubes
from the solvent selection valves. Place solvent tubes into the solvent
cabinet to prevent leaks due to hydrostatic flow.
Figure 22 Exchanging the solvent selection valve
2 Using a Pozidriv screwdriver #1 loosen the holding screws of the valves.
3 Pull the valve module out and detach the connector.
4 Push the connector of the new solvent selection valve into the receptacle.
5 Fix the new valve with the two holding screws and reconnect the solvent
lines.
6 Connect the valve module to its electrical connectors and fix the assembly
with the two holding screws.
7 Reinstall solvent tubes and the active inlet valve connection tubes
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