Orival OR-02-PE, Operation And Maintenance Manual, Page: 9 / 51

ORIVAL, INC. • 213 S. Van Brunt St. • Englewood, NJ 07631 • (201) 568-3311
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The rinse cycle duration is determined by a value programmed in the Controller. The
recommended programming of this value is given in the Control System manual, and
should only be changed to a different value when absolutely necessary.
Upon completion of the rinse cycle, the solenoid valve is de-energized. The solenoid
valve closes, and pressure is restored in the top chamber of the manifold via an orifice
connecting the two chambers of the manifold. Pressure is restored on the upper portion
of the rinse valve diaphragms, causing the valves to close. On hydraulic piston models,
the dirt collector assembly returns to its original position in preparation for the next rinse
cycle.
For a parallel bank of filters, one Controller is used. It monitors the inlet and outlet of the
entire system with the DPS, and each filter is rinsed sequentially. A programmable
delay allows a pause between the rinse cycle of each filter.