Pump Motors 7
Level 2 A.O.Smith
SWIMMING POOL, SPA
AND JETTED TUB MOTORS
Applications include in-ground pools, above
ground pools and pool cleaners.
There are no efficiency standards for single
phase motors. Motors designated high efficiency
by a motor manufacturer are just more efficient
than their standard motors. Swimming pool
pumps are an excellent application for high effi-
ciency motors since they typically run many
hours a day, even continuously. Compare the
operating costs of two motors with their purchase
price.
All commonly used swimming pool, spa and jet-
ted tub motors also operate on the principle of
centrifugal force.
Pool and spa motors are two pole (3450 RPM)
designs. The two speed versions are 3450/1725.
Four pole windings are used on the low speed.
Theoretically, the loading on these pump motors
drop off at a cubed rate compared to the speed.
Examples of horsepower ratings are one (1) HP
on high speed and one-sixth (1/6) HP on low
speed and 2 HP / 1/2 HP.
Pool and spa motors are required to have a
ground bonding lug. This lug is on the outside of
the motor and when connected offers visual
assurance that the motor is grounded. Before
doing any work on a pool or jet pump motor,
check to see if there is any current leaking to
ground.
Swimming
Pool, Spa and
Jetted Tub
Motor s
JBT2072
JETTED TUB MOTOR
SQ1072
BONDING LUG
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