6 Commissioning/Start-up/Shutdown
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CHTRa
5. Check the temperature and smooth running of the bearings. Observe the
information given in "Interlock criteria for rolling element and plain bearings
and permissible vibrations at the bearing housings".
6. Check the pump pressures and differential pressures.
7. Monitor the minimum flow valve to make sure it works (hydrodynamic noise).
8. Check the mechanical seal. Mechanical seals must not drip.
9. Increase the pump speed until the operating speed is reached.
10. Slowly open the shut-off valve of the discharge line until it is completely open.
When starting against an open shut-off valve in the discharge line, consider the
higher power input required.
11. Continuously monitor the pump set’s operating behaviour.
