11 P/N:8023488User's Manual of Beyond 300/301 Delivery SystemFigure 5 Adjust the needle valves• If you want to change the durationof cup filling or bowl rinsing, youneed to remove the two nozzlesand take off the upper shell of thecuspidor body,rotate the needlevalves clockwwise to extend thetime,counterclockwise to shortenthe time.5.4 Dentist unitThe unit can rotate as thefigure shown .Figure 6