76 1100 Series Nano Pump Service Manual
2 Troubleshooting and Test Functions
Running the test from the Control Module
1 Place two bottles of LC-grade isopropyl alcohol in channels A2 and B2.
2 Set flow to 2500 µl/min for channel A2 and B2 and flush the degasser for
about 2 minutes.
• Connect the restriction capillary (G1313-87305) to flow sensor outlet.
• Set flow to 2500 µl/min (normal mode) and 50 % B2.
• Pump for about 10 min.
• Stop the flow.
3 Set flow to 0 µl/min and replace the restriction capillary with blank nut
(01080-83202).
4 Connect the signal cable to the analog output at the rear of the nano pump
(only if an integrator is used).
5 Press Execute to initialize the leak test.
Once the test is started, the nano pump increase the pressure and run each
plunger at low flow rate. The control module displays a graphical
representation of the pressure in the plateau windows. “Evaluating the
Results of the Leak Test” on page 77 describes the evaluation and
interpretation of the leak test results.
6 When the test is finished slowly open the blank nut to release the pressure
in the system.
NOTE
If the pumps seals were replaced or the seals are not sufficient settled use the following
procedure:
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