AWE SPD2H, Owner'S Manual

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G01
SPD Owner’s Manual
2
The Main Shut Off Valve stops all feed water flow and is closed when the prefilters need to be changed.
Normally it is left open.
The Prefilter Housings, (not visible in photograph), have replaceable 5 micron rated spun polypropylene
filter elements inside for removing sediment from the feed water.
The Feed Solenoid Valve opens when the system is operated in normal mode. Otherwise it is closed.
The Feed Pressure Regulator reduces incoming water pressure to about 20 PSI.
The Filter

P Switch turns on the prefilter LED lamp if excessive pressure drop occurs.
The Disinfection Check Valve lets the water from the tank into the pump inlet stream during disinfection
and prohibits the flow of feed water the other way during normal operation.
The Venturi uses high pressure reject water to lift water from the disinfection tank into the pump during
disinfection.
The Fill Tank Solenoid Valve is opened when the "Fill Tank" pushbutton is pressed during normal
operation. It closes automatically when the disinfection tank is full. The keyswitch must be in the
clockwise position for operation.
The Capillary is a short length of 1/4" OD tubing that sets the amount of the reject flow to drain.
The Flush Valve bypasses the capillary and increases the reject flow to drain when opened. Normally it
is closed or partially open to limit recovery.
The Reject Check Valve imposes a backpressure on the reject water to drain standpipe flow. This
forces the water to flow preferentially to the disinfection tank when the reject to tank valve is open.
The Reject to Tank Valve returns reject water to the disinfection tank when opened. It is normally
closed.
The Venturi Supply Valve is opened during disinfection and supplies high pressure reject water to the
venturi. Normally it is closed.
The Disinfection Tank is filled with product water and disinfectant or other chemicals for disinfection or
chemical cleaning.