Appropriate display instruments and test systems (e.g. pressure gauges, pressure-tank water level indicators, pump test piping) shall be installed for monitoring and checking the system.
Geschikte signaleringsinstrumenten en controlesystemen (d.w.z. drukmeters, waterpeilglazen drukhouder, testleidingen pomp) moeten worden aangebracht om de installatie te controleren en te testen.