User manual

1260 Nanoflow Pump User Manual 81
Troubleshooting and Diagnostics
6
Overview of the Module’s Indicators and Test Functions
Leak Rate Test
The Leak Rate Test is a diagnostic test designed to determine the pressure
tightness of the pump. When a problem with the pump is suspected, use this
test to help troubleshoot the pump and its pumping performance.
EMPV Test
The EMPV test is designed to verify the performance of the EMPV. Perform
this test after replacing the EMPV or when observing flow stability problems
in micro mode.
EMPV Cleaning
The pump is equipped with a 0.5 µm pore width inline filter. Although it
retains most particles, particular matter will over time collect in the EMPV
(electromagnetic proportioning valve), causing unstable micro flow and
-pressure. The EMPV cleaning procedure quickly and reliably removes these
particles to restore pump performance in micro mode.