Orival OR-02-PE, Operation And Maintenance Manual, Page: 7 / 51

ORIVAL, INC. • 213 S. Van Brunt St. • Englewood, NJ 07631 • (201) 568-3311
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SECTION 1 - CONSTRUCTION
The housing and covers of standard OR Series filters are made from high-grade, low-
carbon steel. All exposed surfaces, both inside and out, are protected by a thick,
smooth, durable polyester epoxy coating that is electrodeposited, then oven cured, over
a zinc phosphate primer coat. Access to the internal components of the filter is through
a removable front cover, with gripping handles, that is secured to the front end of the
filter housing. This allows for easy access for servicing and maintenance purposes. All
wetted components are constructed of either engineered plastics or non-corrosive
metals, providing for an extended service life.
Optional materials are available for special applications. Stainless Steel filter housings
and covers are readily available. See EQUIPMENT DATA SHEET for more information.
On most models, mounted on the end of the filter housing, is the hydraulic piston
assembly - see EQUIPMENT DATA SHEET for more information. Operating with
filtered water supplied by the filter, its purpose is twofold. During the rinse cycle, the
hydraulic piston regulates the dirt collector's longitudinal velocity, preventing the dirt
collector from traversing the length of the filter too quickly, which could result in an
inefficient rinse cycle. Subsequent to the rinse cycle, the piston returns the dirt collector
to its original position, preparing it for the next cycle.
The standard Control System consists of a microprocessor based Controller housed in
a NEMA 4X enclosure, a Differential Pressure Switch (DPS) and a Solenoid Valve. The
Controller mounted DPS monitors inlet and outlet pressures, has dry contacts, and
comes factory preset to 7 psi, increasing. The housing mounted Solenoid Valve is a 2-
way normally closed valve, activated by 24 Vac from the Controller. The supplied
Controller is pre-wired for 110-120 Vac, 60 Hz single phase input power, and the end
user can easily convert to 220-240 Vac, 60 Hz single phase power by re-arranging
jumpers provided on the Controller’s printed circuit board.