Replacing The Purge Valve Knob - Thermo Scientific thermoscientific Vanquish Pumps C Operating Manual

7.10 Replacing the Purge Valve Knob

When
Parts required
Additional items required
Preparations
Pumps C, Pumps F ( VC-Pxx, VF-Pxx)
Operating Manual
• Leakage is observed around the valve knob when the valve is open.
• Leakage is observed on the purge outlet when the valve is closed.
Purge valve knob (with integrated seals)
Figure 59: Purge valve knob with integrated seals
No. Description
1 Purge valve knob
2 Ring seal
3 Cap seal
NOTICE
Avoid holding the new valve knob by the seal end. Scratches on the seals
will prevent a proper seal and cause leakage.
• Solvent suitable for purging to flush out harmful substances
• Cleaning swab
• Solvent suitable for your application
1. To flush out harmful substances, purge the pump with an
appropriate solvent.
2. Turn off the pump flow and wait until the system pressure is down
to zero.
7 • Maintenance and Service
Page 177