Water Velocity
The maximum water velocity through any suction outlet
must be 1.5 feet per second unless the outlet complies
with the latest ASME/SNSI Specification for Suction
Fittings For Use in Swimming Pools, Spas, Hot Tubs,
and Whirlpool Bathtub Applications. In any case, do not
exceed the suction fittings maximum designed flow rate.
If 100% of the Max-E-Pro
®
High Efficiency Pool and
Spa 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 fitting) is completely
blocked. The flow through the remaining main drain(s)
must comply with the latest ASME/ANSI Specification
for Suction Fittings For Use in Swimming Pools, Spas,
Hot Tubs, and Whirlpool Bathtub Applications.
ELECTRICAL
Notice: Due to wide variation in electrical equipment,
power supply, and installation requirements, this
manual does not make specific recommendations
concerning auxiliary equipment or fusing/wiring.
Wire sizing, wire type, branch circuit fuse protection,
motor starter, control equipment, and related items must
meet National Electrical Code and local code
requirements. Motors are supplied by several
manufacturers and nameplate data (service factor,
maximum amperage, etc.) will vary. Consult control
manufacturer and motor nameplate on your pump to
correctly choose and size motor starter and control
equipment for your particular installation. Specific
electrical questions or problems should be addressed to
the manufacturer of the electrical component in
question.
Ground motor before connecting to electrical
power supply. Failure to ground motor can cause
severe 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 before working on electrical
connections.
Ground Fault Circuit Interrupter (GFCI) tripping
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 damage motor and voids warranty. If in doubt
consult a licensed electrician.
Voltage/Phase
Voltage at motor must be not more than 10% above or
below motor nameplate rated
voltage or motor may
overheat, causing overload
tripping and reduced
component life. If voltage is
less than 90% or more than
110% of rated voltage when
motor is running at full load,
consult power company. Do
not try to connect 3-phase
motors to single phase
power supply or single
phase motors to 3-phase
power supply.
Emergency Shutoff
Install an Emergency Shutoff Switch near pool. Clearly
mark this switch and mount it in allocation that is
accessible to bathers or pool operating personnel (e.g.
lifeguards). Make sure that all lifeguards and pool
personnel understand the switch’s use in case of
emergency (entrapment, electrical malfunction, etc).
Grounding/Bonding
Install, ground, bond and wire motor according to local
or National Electrical Code requirements.
Permanently ground motor. Use green ground terminal
provided under motor canopy or access plate (See
Figure 3); use size and type wire required by code.
Connect motor ground terminal to electrical service
ground.
Bond motor to pool structure. Use a solid copper
conductor, size No. 8 AWG (8.4 sq.mm) or larger. Run
wire from external bonding lug (see Figure 3) to
reinforcing rod or mesh.
Connect a No. 8 AWG (8.4 sq.mm) solid copper
bonding wire to the pressure wire connector provided
on the motor housing and to all metal parts of the
swimming pool, spa, or hot tub and to all electrical
equipment, metal piping or conduit within 5 feet (1.5 m)
of the inside walls of swimming pool, spa, or hot tub.
Hazardous voltage.
Can shock, burn, or
cause death.
Ground pump before
connecting to power
supply.
4
MAX-E-PRO
®
High Efficiency Pool and Spa Pump Installation and User’s Guide
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