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Suction cover life is 7 years, the sump wall fitting life is 14 years, the rest of the components have 25 year life, cover and all
SOFA components shall be replaced on or before the end of service life.
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The use of adhesives or other attachment methods that prevent access to suction piping or SOFA components is prohibited.
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Please refer to Head Loss Curve.
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This is a blockable SOFA as marked on the suction cover.
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Hand tighten screws, DO NOT USE POWER TOOLS TO INSTALL FASTENERS. Ensure proper thread engagement to
prevent cross-threading.
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Ensure proper flatness of installation surface.
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When mud-rings, sump and other components are held in place by the interior surface of the pool, the surface should be free
of deterioration or voids
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Damaged Fasteners shall be replaced with original parts, and must be grade 316 stainless steel. The wall fitting shall be
inspected for the presence of any CRACK or material loss. Cracked/damaged mud rings, sumps, or wall fittings shall
be replaced.
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No unauthorized field modifications. Unauthorized modifications will void certification.
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This product is intended for use on gunite, vinyl, fiberglass, and roto-molded pools, spas and hot tubs.
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No modification shall be made to SOFA structure or flow path unless the configuration has been certified as a new SOFA.
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Service life begins the month and year in which SOFA components are installed with or without water.
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For winterization remove the cover and plug the inlet.
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Use TORX wrench and screw driver for service and removal of fasteners.
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Apply 20 in-lbs torque to TORX Screws.
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Observe cover/grate/fasteners for damage each operational day.
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During installation ensure components and fastener receptacles are clean, free of debris and obstructions.
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Hand-check cover/grate for snugness to the sump/frame/wall fitting after installation.
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SOFA installation components with crack, chunks, or pieces broken off, stripped screw holes, and/or unusual discoloration
should be replaced.
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The mounting surface or interior surface of the pool should be free of deterioration.
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Start installation of screws by hand to ensure proper thread engagement and to prevent cross-threading.
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Do not exceed the safe flow rating of SOFAs as listed.
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All SOFAs should be installed in accordance with Waterway installation instructions.
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Under no condition should SOFA special flow rating be exceeded while the pool is open.
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The capacity of secondary circulation system (skimmer, cutters, etc) should not be included when evaluating an individual
suction system flow rating.
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For the flow rating for pools with multiple blockable SOFAs in one body of water without isolation valves: combine all SOFAs,
minus the flow rate of one, if all are not equal use the larger flow rate.
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“Blockable” SOFAs in new pools shall be installed in multiple-SOFA system ONLY.
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“Blockable” SOFAs in existing pools with single SOFA systems shall be installed with an additional anti-entrapment device
or system.
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This SOFA is suitable for in-place replacement.
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SOFA(s) should be chosen so that the individual suction system flow rate is greater than the pumping systems maximum
system flow rate.
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The flow rating for existing pools with a single blockable SOFA is the flow rating of the SOFA when installed with an additional
device to prevent suction entrapment.
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A single blockable SOFA in a system that does not have an additional device or systems shall result in a flow rate of zero.
