Electrical 6
Dial Type Voltage Selector
Voltage is factory set to 230 volts. To change to 115 volts:
1. Make sure power is off.
2. Turn the dial counter-clockwise until 115 shows in
the dial window as shown in Figure 9.
3. Attach the incoming power leads to the two outer
screws on the pressure switch as shown in Figure 8.
4. Attach the ground wire to the grounding connections
as shown in Figure 8.
5. If there are other wires, they should be capped.
6. Reinstall the Motor end cover.
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.
WIRING CONNECTIONS
Fire hazard. Incorrect voltage can cause a
fire or seriously damage the motor and voids the warranty.
The supply voltage must be within ±10% of the motor
nameplate voltage.
NOTICE: Dual-voltage motors are factory wired for 230
volts. If necessary, reconnect the motor for 115 volts, as
shown. Do not alter the wiring in single voltage motors.
Install, ground, wire, and maintain your pump in com-
pliance with the National Electrical Code (NEC) or the
Canadian Electrical Code (CEC), as applicable, and with
all local codes and ordinances that apply. Consult your
local building inspector for code information.
Connection Procedure:
Step 1. Connect the ground wire first as shown in Figure
8. The ground wire must be a solid copper wire
at least as large as the power supply wires.
Step 2. There must be a solid metal connection between
the pressure switch and the motor for motor
grounding protection. If the pressure switch is
not connected to the motor, connect the green
ground screw in the switch to the green ground
screw under the motor end cover. Use a solid
copper wire at least as large as the power supply
wires.
Step 3. Connect the ground wire to a grounded lead in
a service panel, to a metal underground water
pipe, to a metal well casing at least ten feet (3M)
long, or to a ground electrode provided by the
power company or the hydro authority.
Step 4. Connect the power supply wires to the pressure
switch as shown in Figure 8.
Disconnect power before working on pump, motor, pressure switch, or wiring.
NOTE: 1/2 HP motors are wired for 115 volts only, and have no motor wiring to change.
3/4 HP or 1 HP motor terminal boards (located under the motor end cover) should look like one of those below.
If the motor can operate at either 115 or 230 volts, it is set at the factory to 230 volts. Do not change motor wiring
if line voltage is 230 volts, or if you have a single voltage motor.
Never wire a 115 volt motor to a 230 volt line.
MOTOR SWITCH SETTINGS
Figure 8: Voltage set to 230 volts, Dial Type
Ground Wire Connection
Power Supply Connections
Voltage
Change
Dial
Pressure Switch
Figure 9: Voltage set to 115 volts, Dial Type
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