2-2. ROWPU CONTROLS AND INDICATORS- cont.
Table 2-1. ROWPU Controls and Indicators - Cont.
Control or Indicator
Regulate Product Flow Valve
Product Water Flow Meter
Vent Vessel Outlet
Cartridge Filter Gauge
Measures pressure drop across cartridge filter.
Product Water Outlet
Connection for drinking water from ROWPU to product water tank.
R.O. Element Cleaning Switch
R.O. Pump Low Pressure
R.O. Pump High Pressure
Distribution Pump Indicator
Raw Water Pump No. 1
Raw Water Pump No. 2 Indicator
Chemical Feed Pump Indicator
Booster Pump Indicator Lamp
R.O. Pump Indicator Lamp
Closes the brine outlet of the R.O. vessels. Controls product water flow
rate. Regulates output pressure of the R.O. pump.
Connection for brine water hose from ROWPU brine tank.
Shows the number of gallons per minute of potable water put out by the
Diverts water from R.O. vessels. Also inputs R.O. element cleaning
Element Cleaning switch must be OFF during normal operation to prevent
damage to backwash pump.
Used to operate backwash pump during cleaning of R.O. elements (switch
must be OFF and cover down in down position at all other times). (See
figure 2-5, sheet 1).
See figure 2-5, sheet 2 for illustration of items 25 through 44.
Lamp comes on when R.O. pump suction pressure drops below 10 psi (for
Models WPES-10, WPES-20, and WPES-30) or 40 psi (Models H-9518-
1, H-9518-2, and H-9518-3). This lamp also indicates that R.O. Pump
should have shut off.
Lamp comes on when R.O. Pump discharge pressure is higher than 1250
psi. This lamp also indicates that R.O. pump should have shut off.
Lamp comes on when power has been applied to distribution pump.
Lamp comes on when power has been applied to raw water pump No.1,
Lamp comes on when power has been applied to raw water pump No.2.
Lamp comes on when power has been applied to chemical feed pump.
Lamp comes on when power has been applied to booster pump.
Lamp comes on when power has been applied to R.O. pump.
2-10 Change 2