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Troubleshooting and Test Functions
Evaluating the Results
First plateau negative, second plateau positive
Ramp 3 does not reach limit
Third plateau negative (pressure drop > 2 bar/min)
Potential Cause Corrective Action
Leaking outlet valve. Clean the outlet valve. Ensure the sieve in the
outlet valves are installed correctly. Tighten the
outlet valve.
Loose pump head screws. Ensure the pump head screws are tight.
Leaking seals or scratched plungers. Exchange the pump seals. Check the plunger for
scratches. Exchange if scratched.
Potential Cause Corrective Action
Pump stopped due to error. Check the logbook for error messages.
Large leaks (visible) at the pump seals. Exchange the pump seals.
Large leaks (visible) at active inlet valve,
outlet valve, or purge valve.
Ensure the leaky components are installed
tightly. Exchange the component if required.
Potential Cause Corrective Action
Loose or leaky fittings. Ensure all fittings are tight, or exchange
capillary.
Loose purge valve. Tighten the purge valve (14mm wrench).
Contaminated purge valve. Open and close purge valve to flush out
contamination. Exchange the valve if still
leaky.
Loose pump head screws. Ensure the pump head screws are tight.
Leaking seals or scratched plungers. Exchange the pump seals. Check the plungers
for scratches. Exchange if scratched.
Leaking outlet valve. Exchange the outlet valve.
Leaky damper. Exchange damper.