Pool Pump Suction Entrapment Prevention Guidelines - Polaris PB4SQ Manuel D'installation Et Mode D'emploi

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Pool Pump Suction Entrapment Prevention Guidelines

WARNING
Pump suction is hazardous and can trap and drown or
disembowel bathers. Do not use or operate swimming pools,
spa, 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 correctly
installed, screw-fastened covers in place. All suction outlet (drain)
covers must be maintained. Drain covers must be listed/certified
to the latest version of ANSI
standard, ANSI/APSP-16. 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.
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.
More than one (1) pump can be connected to a single suction line as
Listed/certified to the latest
published version of
ANSI /ASME
®
its successor standard,
ANSI/APSP-16.
Anti-entrapment
Cover/Grate or Suction
Fitting, securely fastened to
Main Drain Sump
Suction Outlet
(Main Drain)
Valves permitted only after tee
Figure 1. Number of Suction Outlets Per Pump
Polaris® PB4SQ™ Booster Pump | Installation and Operation Manual
/ASME A112.19.8 or its successor
® ®
A112.19.8 or
®
long as the requirements above are met.
Water Velocity - The maximum water velocity through the suction
fitting or cover for any suction outlet must be 1.5 feet per second
unless the outlet complies with the latest version of ANSI/ASME
A112.19.8 or its successor standard, ANSI/APSP-16, the standard
for Suction Fittings For Use in Swimming Pools, Wading Pools,
Spas, and Hot Tubs. 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 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 flow through the
remaining main drain(s) must comply with the latest version of
ANSI/ASME A112.19.8 or its successor standard, ANSI/APSP-
16, the standard for Suction Fittings For Use in Swimming Pools,
Wading Pools, Spas, and Hot Tubs.
Testing and Certification - Suction outlet covers must have been
tested by a nationally recognized testing laboratory and found
to comply with the latest version of ANSI/ASME A112.19.8 or its
successor standard, ANSI/APSP-16, the standard for Suction
Fittings For Use in Swimming Pools, Wading Pools, Spas, and Hot
Tubs.
Fittings - Fittings restrict flow; for best efficiency use fewest
possible fittings (but at least two (2) suction outlets).
Avoid fittings which could cause an air trap.
Pool cleaner suction fittings must conform to applicable
International Association of Plumbing and Mechanical Officials
(IAPMO ) standards.
®
At Least
3 Feet
No valves between
Tee and Main Drains
Listed/certified to the latest
published version of
ANSI/ASME A112.19.8 or
its successor standard,
ANSI/APSP-16.
Anti-entrapment
Cover/Grate or Suction
Fitting, securely-fastened
to Main Drain Sump
Suction Outlet
(Main Drain)
Pump