Replacing The Pump Head Seals - Thermo Scientific thermoscientific Vanquish Pumps C Operating Manual

Specific Steps After Piston Seal Replacement
7.6.8

Replacing the Pump Head Seals

When
Parts and tools required
Preparations
Follow these steps
Pumps C, Pumps F ( VC-Pxx, VF-Pxx)
Operating Manual
If you replaced the piston seals together with the seal wash seals,
proceed with these steps:
1. Observe the recommendations for new piston seals (see
Recommendations for New Piston Seals
2. In the Chromeleon software, consider updating the Predictive
Performance information for the piston seals.
3. Recommended: From the Chromeleon software, perform
performance qualification for the pump:
Run the pump-specific Performance Qualification tests (PQ
¨
tests) (= Flow Precision Test and Gradient Accuracy Test). For
details, refer to the Operational and Performance Qualifications
manual.
When the tests are completed, execute the QualificationDone
¨
command.
Damage to pump head seals, leaky seals
• Pump head seals
• Seal wash seals (and seal-handling tool)
NOTICE
All pumps except VC-P21 and VC-P33: Whenever you remove the pump
head, you must replace the seal wash seals.
1. Remove the pump head (see
(} page 138)).
2. Remove the pistons (see
1. Remove the seal wash plate from the pump head if applicable.
2. Remove the seal wash bodies from the pump head if applicable.
3. Remove the pump head seals.
7 • Maintenance and Service
(} page 151)).
Replacing the Pump Head
Replacing the Pistons (} page 144)).
Page 157