Hayward NAVIGATOR POOLVAC V-Flex Anwenderhandbuch Seite 38

INSTALLATION
Reading Too Low?
An initial vacuum reading that is TOO low to meet the water flow
setting necessary to operate the Cleaner is indicative of a system
problem, and not a problem with the Cleaner.
The Regulator Valve cannot be used to INCREASE the initial
vacuum reading.
Step 6
12