Here are the specs for your pump:
Thermoplastic Shallow Well Jet Pump 3/4 HP. This new revision of an "old hand" provides good pressure pumping from wells where the depth-to-water is 25' or less.
BODY CONSTRUCTION: Thermoplastic
MAXIMUM CAPACITY: 12 GPM
FLOW at 10' LIFT and 40 PSI: 9.7 GPM
MAX LIFT: 25'
MAXIMUM PRESSURE: 78 psi
PRESSURE SWITCH SETTING: 30/50
SUCTION PIPE SIZE: 1-1/4" NPT
DISCHARGE PIPE SIZE: 1" NPT
AMP DRAW (full load): 6.1 amps on 230v / 12.2 amps on 115v
VOLTAGE: 230v / 115v, 60 Hz
RECOMMENDED BREAKER: 15 amp on 230v / 20 amp on 115v
MAXIMUM WATER TEMPERATURE: 140 °F (60 °C)
Note that this pump can be operated at 115 volts or 230 volts (A/C) It may have come wired for 230 volt use from the vendor.
Make sure the pump is piped correctly.
There should be a wiring diagram either on the pump or in the literature so you can check to see how the pump is wired.
you have the pump wired for 115 volt use in your case. Also make sure the wire size is #12 awg for the power wiring.
Make sure all connections are tight. If you have an amprobe (an instrument that measures electric current) you can check to see how many amps the pump is pulling when it runs.
You said your old pump was 1 HP. This Flotec pump is 3/4 horse so there could be some pump performance loss depending on the well depth and length of the piping runs.
Here's the link to the website for the pump. There are additional resources available on the website:
Thermoplastic Shallow Well Jet Pump 3 4 HP