110 1100 Series Nano Pump Service Manual
3 Repairing the Pump
2 Before inserting the new valve cartridge clean the area in the actuator
assembly. Fill a syringe with alcohol and flush the cartridge area
thoroughly.
3 Insert a new valve cartridge into the actuator assembly. Make sure the valve
cartridge is fully inserted into the actuator assembly.
Replacing the Active Inlet Valve
1 Insert the new valve into the pump head. Using the 14 mm wrench turn the
nut until hand tight.
2 Position the valve that the solvent inlet tube connection points towards the
front.
3 Using the 14 mm wrench tighten the nut by turning the valve in its final
position (not more than a quarter turn). Do not overtighten the valve. The
solvent inlet tube connection should point to the right corner of the pump
head.
4 Reconnect the inlet tube and the active inlet valve cable to the connector at
the Z-panel.
5 After an exchange of the valve cartridge it may take several mL of pumping
with the solvent used in the current application, before the flow stabilizes
at A%-ripple as low as it used to be, when the system was still working
properly.
Make sure you are in normal mode.
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