2-8. INITIAL ADJUSTMENTS AND CHECKS - cont.
Set Backwash Valve. Set backwash valve handle (6, figure 2-46) to NORMAL. Valve is set to
NORMAL when handle is horizontal.
Set Regulate Product Flow Valve. Set REGULATE PRODUCT FLOW valve (4, figure 2-46) to
O P E N .
Valve is open when handwheel is turned fully counterclockwise.
R.O. Pressure Tube Vent/Sample Valves. Refer to figure 2-47.
Vent/sample valves are connected to the R.O. vessels by clear, braided plastic
h o s e .
Close four front R.O. pressure tube vent/sample valves located at forward end R.O. pump
end) of each R.O. pressure tube. Valves are closed when control handles are horizontal.
Set four rear R.O. pressure tube vent/sample valves to normal position.
Figure 2-47. R.O. Tube Vent/Sample Valves.