8 P/N:80234885 Operations5.1 Water supply systemA 1.5L quick-disconnect water bottle mounted on the front rotary arm ,providesimple and convenient solution to control water quality.Figure 1User's Manual of Beyond 300/301 Delivery System1. Air Q/D: This air output provides 80 psioutput to run accessories for the user.Accepts a 3/8in. male quick-disconnectfitting.2. Water Q/D: This water output provides 40psi output to run accessories for the user.Accepts a 1/4in. male quick-disconnectfitting.3. Flow Control: This needle vale adjusts thewater output from the Water Q/D. Rotatecounterclockwise to increase output androtate clockwise to decrease output.4. City/Bottle Selector: This routing valvecontrols the water systerm input. With thetoggle up in the “City”position, water entersthe dental unit from the office plumbing.With the toggle down in the”Bottle”position,water enters the dental unit from self-contained water system.CAUTION: Only water bottles supplied by the manufacturer can beused .Do not use soft drink bottles which are thin walled and may rupturewhen under pressure.WARNING: Do not attempt to adjust the water bottle pressure. Bottlepressure is factory pre-set 40psi.Pressurizing the water bottle over 40 psimay cause the bottle to rupture.