Resolving Liquid Leaks - Thermo Scientific thermoscientific Vanquish Pumps C Operating Manual

8.4

Resolving Liquid Leaks

When
Parts and additional items required
Preparations
Follow these steps
Pumps C, Pumps F ( VC-Pxx, VF-Pxx)
Operating Manual
TIP If leakage is observed around the purge valve knob (when the purge
valve is open) or on the purge outlet (when the purge valve is closed),
the purge valve knob may be defective (see
Knob (} page 177)).
The leak sensor is wet. The leak sensor reports leakage.
If leakage is not resolved after 3 minutes, the pump stops the flow.
• 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 117).
1. Locate the source of the leak.
As leakage usually occurs at a connection, visually inspect all
components and connections in the flow path.
The following tests can help you to identify the source:
Leakage test for the seal wash system
¨
See Testing the Seal Wash System for Leakage
Leakage test for the piston seals
¨
See Testing the Piston Seals for Leakage
Leakage test for the entire pump
¨
See Testing the Pump for Leakage (General Test)
After taking remedial action as required, proceed with the next
steps.
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.
8 • Troubleshooting
Replacing the Purge Valve
Maintenance and Service
(} page 130).
(} page 159).
(} page 179).
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