6
CONNECTION DIAGRAM FOR DUAL VOLTAGE,
SINGLE-PHASE MOTORS
Your dual-voltage motor’s terminal board (under the motor end
cover) will match one of the diagrams below. Follow that diagram
if necessary to convert motor to 115 Volt power. Connect power
supply wires to L1 and L2. For 3-phase motors, or if motor does not
match these pictures, follow the connection diagram on the motor
nameplate.
THE MOTOR IS SET FOR 230 VOLTS
WHEN SHIPPED.
To change the motor to use 115 volts:
1. Turn off power
2. Remove the back motor cover.
3. Use a screwdriver or 1/2” wrench and turn the voltage
selector dial counterclockwise until 115 shows in the dial
opening.
4. Reinstall the motor cover.
Hazardous voltage. Can shock, burn, or
cause death. Disconnect power to motor before working on
pump or motor. Ground motor before connecting to power
supply.
WIRING
Ground motor before connecting to electrical power
supply. Failure to ground motor can cause severe or fatal
electrical shock hazard.
Do not ground to a gas supply line.
To avoid dangerous or fatal electrical shock, turn OFF
power to motor before working on electrical connections.
Supply voltage must be within ±10% of nameplate voltage.
Incorrect voltage can cause fire or damage motor and
voids warranty. If in doubt consult a licensed electrician.
Use wire size specified in Wiring Chart (Page 5). If possible,
connect pump to a separate branch circuit with no other
appliances on it.
Wire motor according to diagram on motor nameplate. If
nameplate diagram differs from diagrams above, follow
nameplate diagram.
1. Install, ground, wire and maintain your pump in
compliance with the National Electrical Code (NEC)
in the U.S., 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.
2. Provide a correctly fused disconnect switch for protection
while working on motor. For switch requirements, consult
your local building inspector for information about codes.
3. Disconnect power before servicing motor or pump. If the
disconnect switch is out of sight of pump, lock it open
and tag it to prevent unexpected power application.
4. Ground the pump permanently using a wire of the same size
as that specified in Wiring Chart (Page 5). Make ground
connection to green grounding terminal under motor
canopy marked GRD. or .
5. Connect ground wire to a grounded lead in the service panel
or to a metal underground water pipe or well casing at least
10 feet long. Do not connect to plastic pipe or insulated
fittings.
6. Protect current carrying and grounding conductors from
cuts, grease, heat, oil, and chemicals.
7. Connect current carrying conductors to terminals L1 and
L2 under motor canopy. When replacing motor, check
wiring diagram on motor nameplate against Figure ##.
If the motor wiring diagram does not match either diagram
in Figure 3, follow the diagram on the motor.
IMPORTANT: 115/230 Volt single phase models are shipped
from factory with motor wired for 230 volts. If power supply
is 115 volts, remove motor canopy and reconnect motor as
shown in Figure 3. Do not try to run motor as received on 115
volt current.
8. Motor has automatic internal thermal overload protection.
If motor has stopped for unknown reasons, thermal
overload may restart it unexpectedly, which could cause
injury or property damage. Disconnect power before
servicing motor.
9. Always consult a licensed electrician for clarification of this
procedure or the wiring diagrams.
Figure 3: Changing the Voltage Setting
Figure 4: Motor Set for 115 Volt Operation
INSTALLATION
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