9
Figure 5: Front of Unit
PURO PRO Electrical Connections:
1. Attach the float switch to the vented storage tank so that the
float raises to the horizontal position when the storage tank is
full of water. The float switch will provide an open circuit (i.e.,
no power) to the solenoid when in a vertical (unfloating)
position; the float switch will provide a closed circuit (i.e.,
powered) to the solenoid when in the horizontal (floating)
position. See Figure 1.
2. Connect the float switch to the power box with the electrical
connector provided. See Figure 6.
3. The inlet solenoid is already connected to the power box. The
inlet solenoid is normally closed: When the circuit is open the
inlet solenoid will be closed and no water will flow into the
PURO PRO unit. When the circuit is closed the inlet solenoid
will open and water will flow into the PURO PRO unit.
Treated Water
(Check Valve)
Untreated Water
Inlet (Inlet Solenoid)
Drain
(Needle Valve)
Untreated Water
Pressure Gauge
Power Box
On/Off Switch
