Entrapment Protection; Testing And Certifi Cation; Outlets Per Pump; Water Velocity - STA-RITE SilentFlo SF550100 Owner's Manual

Pump suctions are hazardous and can trap and drown or disembowel bathers.
Do not use or operate pump, pool or spa if a suction outlet cover is missing,
broken, or loose. Follow the guidelines below for a pump installation which
minimises risk to users or pools and spas.

Entrapment Protection

The pump suction system must provide protection against hazard of suction
entrapment or hair entrapment/entanglement.
Testing and Certifi cation
Suction outlet covers must have been tested by a nationally recognised
testing laboratory and found to comply with the latest AS1926.3 standard or
ASME/ANSI specifi cation for Suction Fittings For Use in Swimming Pools,
Spas, Hot Tubs, and Whirlpool Bathtub Applications.

Outlets Per Pump

Provide at least two hydraulically balanced main drains, with covers, for each
swimming pool pump suction line. The centres of the main drains (suction
fi ttings) must be at least 800mm 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). 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.
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 any suction outlet must comply with
the latest AS1926.3 Standard or ASME/ANSI Specifi cation for Suction
Fittings For Use in Swimming Pools, Spas, Hot Tubs, and Whirlpool Bathtub
Applications.
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