Resolving Liquid Leaks - Thermo Scientific Vanquish VH-D10 Operating Manual

8 • Troubleshooting
8.4

Resolving Liquid Leaks

When
Parts and additional items required
Preparations
Follow these steps
Page 170
The leak sensor is wet. The leak sensor reports leakage.
• Replacement part as required
• Cloth or tissue
When resolving leakage, observe the safety guidelines and general rules
for maintenance and service as presented in
(} page 111).
1. Locate the source of the leak. Leakage usually occurs at a
connection. However, leakage may also have occurred inside the
flow cell. If your configuration includes an overpressure relief valve,
the leakage could also be caused by the overpressure relief valve.
Situation
Flow cell inlet and/or
outlet
If the overpressure relief
valve releases liquid
If liquid is in the leak tray
but the flow cell inlet or
outlet or the overpressure
relief valve is not leaking
2. With a cloth or tissue, thoroughly absorb all liquid that has collected
in the leak tray and under the leak sensor. Be careful not to bend the
sensor.
3. Allow the sensor to adjust to the ambient temperature for a few
minutes.
4. If leakage is no longer reported, you can resume operation.
Maintenance and Service
Steps
1. Tighten the connection where liquid is visible.
2. If the connection seems tight but is still leaking,
remove the connection/fitting and check for damage.
3. If necessary, replace the inlet capillary or waste line.
1. Check whether the overpressure relief valve has
opened due to an overpressure or whether it leaks due
to dirt inside the overpressure relief valve.
2. Find and resolve the root cause for the overpressure
or remove the dirt from the overpressure relief valve
(refer to the Overpressure Relief Valve Installation
Guide).
1. Remove the flow cell from the detector and inspect
the flow cell for signs of leakage.
2. If signs of leakage are present at the flow cell, the
flow is damaged and needs to be replaced. Carefully
dry the flow cell opening in the detector and let
remaining moisture evaporate before you replace the
flow cell.
Diode Array Detectors (VH-D10)
Operating Manual