Thermo Scientific VF-F20-A Operating Manual page 167

Follow these steps
Integral Fraction Collector FT (VF-F20-A) Operating Manual
1. Remove the flush solvent tubing from port 7 of fraction collection
valve to the flush solvent reservoir in the solvent rack:
Figure 65: Flush solvent tubing
2. Remove the capillary between flush pump and fraction collection
valve port 8:
3. Disconnect from the flush pump by unscrewing the fitting.
4. Disconnect the Viper fitting from port 8 of fraction collection valve
with the Viper knurl.
Figure 66: Flush pump to fraction collection valve capillary
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7 Maintenance and Service
Page 167