If you need to replace the motor portion of your pool pump, there are certain things you need to know in order to get the correct motor. This information can be found on the motor label of the current motor. Some important information to look for is the frame, RPM, amperage, horse power, shaft (threaded or keyed), single or three phase, and if your motor is a square flange or a C faced motor.
To determine if you have a Full Rate or an Up Rate motor you will first need to find the motor's service factor (S.F). This number along with the motor's horsepower, can be found by searching the motor's label. Once the service factor is located, use the chart below to determine the rate of your motor.
| FULL RATED | UP RATED | ||
| Horse Power | Typical Service Factor | Horse Power | Typical Service Factor |
| 1/3 | 2.0 | 1/2 | 1.30 |
| 1/2 | 1.95 | 3/4 | 1.25 |
| 3/4 | 1.65 | 1 | 1.25 |
| 1 | 1.65 | 1.5 | 1.10 |
| 1.5 | 1.50 | 2 | 1.10 |
| 2 | 1.30 | 2.5 | 1.04 |
Max Flo |
Power Flo |
Power Flo II/III |
Power Flo LX |
Power Flo Matrix |
Super Pump |
Super II |
NorthStar Full Rated |
NorthStar Up Rated |
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