18 HARDI® New NAVIGATOR OPERATOR’S MANUALOperationFlush tank (optional system)Screw open the flush tank lid and fill with water.Foam marker tank (optional)The fill inlet for the foam marker tank is found to theright of the Hardi® Navigator Smart Valve Control Panelas shown in (Fig 15).Main tankScrew open the main tank lid and fill with water throughthe strainer to prevent rust or other particles enteringthe tank.An overhead tank will allow high filling capaci ty.WARNING! Do not let the filling hose etc., enterany tank. Keep it outside the tank, pointingtowards the filling hole. If the end of the hoseis beneath the surface of the tank contents,and the water pump at the water supply plantstops, chemi cals could be siphoned back andcontami nate water supply lines.Quick Fill (Optional)The optional QUICK FILL allows the operator toconnect a hose from a water supply (i.e. overhead filltank), and fill the main tank.WARNING! Do not fi ll tank so rapidly that aircannot escape - tank may rupture.General Quick Filling guidelines1 Remove the camlock plug from the front of the quickfi ll valve (Fig 16).2 Connect the filling hose from the water supply.3 Open the quick fill valve and fill tank to desired level.4 Close the quick fill valve and remove filling hose.5 Remember to re-fit the camlock plug to the quick fillcoupler when filling is complete.Fig. 16Fig. 15