Pool Pump Suction Entrapment Prevention Guidelines - Jandy ePump Series Installation And Operation Manual

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Pool Pump Suction Entrapment Prevention Guidelines

SUCTION HAZARD. 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 (2) functioning suction outlets.
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 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 correctly installed, screw-fastened covers in
place. All suction outlet (drain) covers must be maintained. Drain covers must be listed/certifi ed to the
latest published edition of ANSI/ASME A112.19.8. They must be replaced if cracked, broken, or missing.
Number of Suction Outlets Per Pump - Provide at least two (2) hydraulically-balanced main drains,
with covers, as suction outlets for each circulating pump suction line. The centers of the main drains
(suction outlets) on any one (1) suction line must be at least three (3) feet apart, center to center. See
Figure 1 on page 7.
The system must be built to include at least two (2) suction outlets (drains) connected to the pump
whenever the pump is running. However, if two (2) 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 such that it shall not allow for separate or independent shutoff or isolation of each
drain. See Figure 1 on page 7.
More than one (1) 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 fi tting or cover for any suction outlet
must be 1.5 feet per second, unless the outlet complies with the latest published edition of ANSI/ASME
A112.19.8, 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 fi tting's maximum designed
fl ow rate.
If 100% of the pump's fl ow comes from the main drain system, the maximum water velocity in the pump
suction hydraulic system must be six (6) feet per second or less, even if one (1) main drain (suction
outlet) is completely blocked. The fl ow through the remaining main drain(s) must comply with the latest
published edition of ANSI/ASME A112.19.8, the standard for Suction Fittings For Use in Swimming and
Wading Pools, Spas, Hot Tubs, and Whirlpool Bathtub Applications.
Testing and Certifi 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, the
standard for Suction Fittings For Use in Swimming and Wading Pools, Spas, Hot Tubs, and Whirlpool
Bathtub Applications.
Fittings - Fittings restrict fl ow; for best effi ciency use fewest possible fi ttings (but at least two (2) suction
outlets).
Avoid fi ttings that could cause an air trap.
Pool cleaner suction fi ttings must conform to applicable International Association of Plumbing and
Mechanical Offi cials (IAPMO) standards.
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