72 1100 Series Nano Pump Service Manual
2 Troubleshooting and Test Functions
Potential Causes of Pressure Test Failure
After isolating and fixing the cause of the leak, repeat the pressure test to
confirm the system is pressure tight.
Potential Cause (Pump) Corrective Action
Loose or leaky fitting. Tighten the fitting or exchange the capillary.
Damaged pump seals or plungers. Run the leak test to confirm the leak.
Potential Cause (Autosampler) Corrective Action
Loose or leaky fitting. Tighten or exchange the fitting or capillary.
Needle seat. Exchange the needle seat.
Rotor seal (injection valve). Exchange the rotor seal.
Damaged metering seal or plunger. Exchange the metering seal. Check the plunger
for scratches. Exchange the plunger if required.
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