Thermo Scientific Vanquish VH-P10-A-02, Operating Manual

Page: 208 / 238

8 • Troubleshooting
Page 208 Vanquish Pumps (VH-P10-A-02) Operating Manual
8.4 Resolving Leakage
TIP If you are using Chromeleon 7.2.6 or later and suspect that leakage
may be present in the pump, run the Simple Leak Test (see section 8.3,
page 207 ). When the leak sensor reports leakage, see further down.
When
The leak sensor is wet. The leak sensor reports leakage.
If leakage is not resolved after 3 minutes, the pump stops the flow.
Preparations
When resolving leakage, observe the safety guidelines and general rules
for maintenance and service as presented in
chapter 7 Maintenance and
Service, page 115 .
As leakage usually occurs at a connection, inspect all components and
connections in the flow path.
Parts required
Replacement part as required
Additional items required
Cloth or tissue
Follow these steps
1. Locate the source of the leak.
The following tests can help you to identify the source:
♦ Test the seal wash system for leakage (see section 7.5.1,
page 128 ).
♦ Test the pump for piston seal leakage (see section 7.7.9,
page 161 ).
♦
Test the entire pump for leakage (see section 7.12, page 178 ).
2. Tighten or replace the connection or component as required.
3. 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.