Pentair MPE Electrical, Water Velocity, Testing and Certification, Fittings, Voltage, At Least

Hazardous voltage. Can shock, burn, or cause death.

Disconnect power before working on pump or motor.

Water Velocity

The maximum water velocity through the suction fitting or cover for any suction outlet must not exceed 1.5 feet per second unless the outlet complies with the latest ANSI/ASME 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 ANSI/ASME 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 ANSI/ASME Specifications for Suction Fittings For Use in Swimming Pools, Spas, Hot Tubs, and Whirlpool Bathtub Applications.

Fittings:

ELECTRICAL

Ground motor before

connecting to electrical power supply. Failure to ground motor can cause se- vere or fatal electrical shock hazard.

Do not ground to a gas supply line.

To avoid dangerous or fatal electrical shock,

turn OFF power to motor be- fore working on electrical connections.

Ground Fault Circuit

Interrupter (GFCI) trip- ping indicates an electrical problem. If GFCI trips and will not reset, have a qualified

electrician inspect and repair electrical system.

Exactly match supply voltage to nameplate voltage. Incorrect voltage can cause fire or seriously dam-

age motor and voids warranty. If in doubt consult a li- censed electrician.

Fittings restrict flow; for best efficiency use fewest possi-		Voltage
ble fittings (but at least two suction outlets).		Voltage at motor must be not more than 10% above or
Avoid fittings which could cause an air trap.		below motor nameplate rated voltage or motor may over-
		heat, causing overload tripping and reduced component
Pool fittings must conform to International Association of
		life. If voltage is less than 90% or more than 110% of
Plumbing and Mechanical Officials (IAPMO) standards.
		rated voltage when motor is running at full load, consult
Use only non-entrapping suction fitting or double suction.		power company.
	At Least
	3 Feet

IAPMO Certified		IAPMO Certified
Anti-entrapment		Anti-entrapment
Cover or Suction Fitting,		Cover or Suction Fitting,
screw-fastened to	No valves between	screw-fastened to
Main Drain Sump	Tee and Main Drains	Main Drain Sump

Suction Outlet

(Main Drain)

Valves OK between pump and Tee

Suction Outlet

(Main Drain)

Pump

2762 0197

Figure 3 – Recommended pump suction layout.

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