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

Page: 147 / 238

7 • Maintenance and Service
Vanquish Pumps (VH-P10-A-02) Operating Manual Page 147
Preparations
1. Remove the pump head (see section 7.7.2, page 138 ).
2. Remove the pistons (see section 7.7.3, page 142 ).
Follow these steps
1. Remove the screws on the rear of the pump head (on the seal wash
plate).
2. Remove the seal wash plate from the pump head.
TIP
Removing the seal wash plate may be easier with the spacing
tool. Insert the spacing tool into the opening on one side of the seal
wash plate and lever the plate away from the pump head. Repeat on
the other side.
Figure 47: Removing the seal wash plate with the spacing tool
3. Remove the seal wash bodies from the pump head if applicable.
4. Remove the support ring.
Gently tap the pump head on a clean work surface to make the
support ring drop out.
If the support ring does not drop out, use the seal-handling tool.
With the
insertion
pin, push the seal-handling tool at a slight angle
into the pump head and remove the tool. The support ring is
removed together with the tool.
NOTICE Do not use the seal removal pin to remove the support ring.
The support ring can be removed from the tool only with difficulties.
No. Description
1 Pump head
2 Opening on seal wash plate
3 Spacing tool
4 Seal wash plate