5
Entrapment Prevention
A
DANGER:
DO NOT BLOCK SUCTION.
A
DANGER:
Hazardous suction can
trap hair or body parts, causing severe
injury or death. Do not block suction.
SUCTION HAZARD
. Can cause serious injury or death.
Do not use this pump for wading pools, shallow pools,
or spas containing bottom drains, unless the pump is
connected to at least two functioning suction outlets.
A
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 to minimize 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/certified 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 off both main drains from the pump. The
system shall be constructed so that it shall not allow for
separate or independent shutoff 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 water velocity through the suction fitting or cover
for any suction outlet must be 1.5 ft (.5 m) per second or
less, 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
fitting's maximum designed flow rate.
If 100% of the pump’s flow 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 flow
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 Certification
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 flow; for high-efficiency, use the fewest
possible fittings (but at least two suction outlets).
Avoid fittings that could cause an air trap.
Pool cleaner suction fittings must conform to applicable
International Association of Plumbing and Mechanical
Officials (IAPMO) standards, or refer to local codes and
requirements as appropriate.
SAVE THESE INSTRUCTIONS.
APPROVED
UNCONTROLLED DOCUMENT IF PRINTED
