4
Motor Switch Settings
Dual-voltage motors (motors that can operate at either 115 or
230 volts), are set at the factory to 230 volts. Do not change
motor voltage setting if line voltage is 230 volts, or if you have
a single voltage motor.
NOTE:
Never wire a 115 volt motor to a 230 volt line.
Remove Motor End Cover
If you have a dual-voltage motor, and will connect it to 115
volts, follow the procedure below.
You will need to remove the motor end cover to change the
voltage setting.
Your motor terminal board (located under the motor end
cover) should look like that shown below.
To change to 115 volts:
1. Make sure power is off.
2. Turn the dial counter-clockwise until 115 shows in the dial
window.
3. The wires from the pressure switch should already be
attached to to power lead terminals.
4. Reinstall the Motor end cover.
Pressure Switch Wiring
Step 5. Go to Wiring Connections below.
Hazardous voltage. Can shock, burn, or kill.
Connect ground wire before connecting power supply
wires. Use the wire size (including the ground wire) speci-
fied in the wiring chart.
If possible, connect the pump to a
separate branch circuit with no other appliances on it.
Explosion hazard. Do not ground to a gas
supply line.
Electrical
Disconnect power before working on pump, motor, pressure switch, or wiring.
Figure 4 – Removing Motor End Cover
Motor
End Cover
End Cover Screws
Figure 6 – Pressure Switch Wiring
Clamp the power cable to prevent strain
on the terminal screws.
Connect the green (or bare copper) ground wire
to the green ground screw.
Motor wires
connect here
.
3187 0704H
Power supply wires
connect here.
230 Volt:
Connect 2 hot wires (black and red)
here and cap the white (neutral) wire. It does
not matter which wire goes to which screw.
115 Volt:
Connect one hot wire (black or red)
to one of these screws (it doesn't matter
which one). Connect the white (neutral) wire
to the other screw. Cap any remaining
black or red wires.
Figure 5 – Voltage set to 230 volts, Dial Type
Voltage
Change Dial
Ground
Screw
Power Lead
Terminals