Entrapment Protection - Flotec AT250701 Notice D'utilisation

Installation
Pump suction is hazardous and can trap and
drown or disembowel bathers. Do not use or oper-
ate swimming pools, spas, or hot tubs if a suction outlet
cover is missing, broken, or loose. Follow the guidelines
below for a pump installation which minimizes risk to
users of pools, spas, and hot tubs.

Entrapment Protection

The pump suction system must provide protection
against the hazard of suction entrapment or hair entrap-
ment/entanglement.
Suction Outlet Covers
All suction outlet covers must be maintained. They must
be replaced if cracked, broken, or missing.
See "Testing and Certification", at right, for outlet cover
certification requirements.
All suction outlets must have correctly installed, screw-
fastened covers in place.
Suction Outlets Per Pump (Figure 2, below)
Provide at least two 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 suction line must be at least three feet apart.
The system must be built so that it cannot operate with
the pump drawing water from only one main drain (that
is, there must be at least two main drains connected to
the pump whenever it is running – see Figure 2, below).
However, if two main drains run into a single suction
line, the single suction line may be equipped with a
valve which will shut off both main drains from the
pump (see Figure 2).
More than one pump can be connected to a single suc-
tion line as long as the requirements above are met.
IAPMO Certified
Anti-entrapment
Cover or Suction Fitting,
screw-fastened to
Main Drain Sump
Suction Outlet
(Main Drain)
Figure 2 – Recommended pump suction layout.
For parts or assistance, call Flotec Customer Service at
At Least
3 Feet
No valves between
Tee and Main Drains
Valves OK between
pump and Tee
Water Velocity
The maximum water velocity through the suction fitting
or cover for any suction outlet must be 1.5 feet per sec-
ond unless the outlet complies with the latest
ASME/ANSI Specification for Suction Fittings For Use in
Swimming Pools, Spas, Hot Tubs, and Whirlpool Bathtub
Applications. In any case, do not exceed the suction fit-
ting'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 feet per second or less even
if one main drain (suction outlet) is completely blocked.
The flow through the remaining main drain(s) must com-
ply with the latest ASME/ANSI Specification for Suction
Fittings For Use in Swimming Pools, Spas, Hot Tubs, and
Whirlpool Bathtub Applications .
Testing and Certification
Suction outlet covers must have been tested by a nation-
ally recognized testing laboratory and found to comply
with the latest ASME/ANSI Specifications for Suction
Fittings For Use in Swimming Pools, Spas, Hot Tubs, and
Whirlpool Bathtub Applications .
Fittings:
Fittings restrict flow; for best efficiency use fewest possi-
ble fittings (but at least two suction outlets).
Avoid fittings which could cause an air trap.
Pool fittings must conform to International Association of
Plumbing and Mechanical Officials (IAPMO) standards.
Use only non-entrapping suction fitting or double suction.
IAPMO Certified
Anti-entrapment
Cover or Suction Fitting,
screw-fastened to
Main Drain Sump
Suction Outlet
(Main Drain)
Pump
1-800-365-6832
2762 0197
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