Replacing The Pistons - Thermo Scientific Vanquish VH-P10 Operating Manual

7 • Maintenance and Service
7.6.3

Replacing the Pistons

When
Parts and additional items required
Preparations
Follow these steps
Page 136
Damage of piston
•
Pistons
• Isopropanol
Remove the pump head (see
1. Remove the pistons from the pump head (or pump if necessary).
2. Observe the following:
♦ Write down the 3-digit piston calibration value (which is
imprinted on the rear of the piston, see picture) and the
installation position in the pump head (left or right). You might
need this assignment in a later step.
Figure 41: Piston calibration value
♦
Reinstallation of pistons
Be sure not to interchange the pistons.
♦ Installation of new pistons (replacement pistons)
New pistons can be installed in either position.
3. When reinstalling a piston you removed
Clean the piston. Follow the steps in
4. To facilitate piston installation, inject a few drops of isopropanol into
the piston cavity in which you want to install the piston.
section 7.6.2, page 133).
section 7.6.4, page
Vanquish Pumps (VH-P10) Operating Manual
139.