Raypak RPSFP16 - Entrapment Prevention Safety; Entrapment Prevention System Design; Suction Outlet Cover Specifications; Water Velocity and Fitting Guidelines

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3. IMPORTANT SAFETY
INSTRUCTIONS
Entrapment Prevention
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DANGER: DO NOT BLOCK SUCTION.
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DANGER: Hazardous suction can
trap hair or body parts, causing severe
injury or death. Do not block suction.
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DANGER: Hazardous suction can
trap hair or body parts, causing severe
injury or death. Do not block suction.
SUCTION HAZARD. Suction can cause serious injury or
death. Do not use this pump for wading pools, shallow
pools, or spas containing bottom drains, unless pump is
connected to at least two functioning suction outlets.
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WARNING: Pump suction is hazardous and can
trap and drown or disembowel bathers. Do not use or
operate swimming pools, spas, or hot tubs if a suction
outlet cover is missing, broken, or loose.
The following guidelines provide information for pump
installation that minimizes the risk of injury to users of
pools, spas, and hot tubs:
Entrapment Protection
The pump suction system must provide protection against
the hazards of suction entrapment.
Suction Outlet Covers
All suction outlets must have screw-fastened covers
installed. All suction outlet (drain) covers must be
maintained. Drain covers must be listed/certied to the
latest published edition of ANSI/ASME A112.19.8 (ANSI/
APSP-16, 2011). They must be replaced if cracked,
broken, or missing.
Number of Suction Outlets Per Pump
Provide at least two hydraulically-balanced main drains,
with covers, as suction, for each circulating pump suction
line. The centers of the main drains (suction outlets) on
any one suction line must be at least 3 ft (.9 m) apart,
center to center.
The system must be built to include at least two suction
outlets (drains) connected to the pump whenever the pump
is running. However, if the two main drains run into a single
suction line, the single suction line may be equipped with a
valve that will shut o󰀨 both main drains from the pump. The
system shall be constructed such that it shall not allow for
separate or independent shuto󰀨 or isolation of each drain.
More than one pump can be connected to a single suction
line as long as the requirements above are met.
Water Velocity
The maximum water velocity through the suction tting
or cover for any suction outlet must be 1.5 ft (.5 m) per
second, unless the outlet complies with the latest published
edition of ANSI/ASME A112.19.8 (ANSI/APSP-16, 2011),
the standard for Suction Fittings For Use in Swimming and
Wading Pools, Spas, Hot Tubs, and Whirlpool Bathtub
Applications. In any case, do not exceed the suction
tting’s maximum designed ow rate.
If 100% of the pump’s ow comes from the main drain
system, the water velocity in the pump suction hydraulic
system must be 6 ft (1.8 m) per second or less, even if one
main drain (suction outlet) is completely blocked. The ow
through the remaining main drain(s) must comply with the
latest published edition of ANSI/ASME A112.19.8 (ANSI/
APSP-16, 2011), the standard for Suction Fittings For Use
in Swimming and Wading Pools, Spas, Hot Tubs, and
Whirlpool Bathtub Applications.
Testing and Certication
Suction outlet covers must have been tested by a nationally-
recognized testing laboratory and found to comply with the
latest published edition of ANSI/ASME A112.19.8 (ANSI/
APSP-16, 2011), the standard for Suction Fittings For Use
in Swimming and Wading Pools, Spas, Hot Tubs, and
Whirlpool Bathtub Applications.
Fittings
Fittings restrict ow; for the best e󰀩ciency, use the fewest
possible ttings (but at least two suction outlets).
Avoid ttings that could cause an air trap.
Pool cleaner suction ttings must conform to applicable
International Association of Plumbing and Mechanical
O󰀩cials (IAPMO) standards.
SAVE THESE INSTRUCTIONS.